Can I ask has anyone gone to Center lock hubs for the Gen V

[stradman]

Really just a question and if so who could supply this??

[Arizona Vipers]

Really just a question and if so who could supply this??

Talk to Nineball on here! I was going to go this route until i found out they added weight, but I know you love unsprung weight ;)
The porsche guys i see with these at the track seems like a big pain in the ass they have these giant torque wrenches, like 6 feet long. LOL.
They do look badass though!

[stradman]

Talk to Nineball on here! I was going to go this route until i found out they added weight, but I know you love unsprung weight ;)
The porsche guys i see with these at the track seems like a big pain in the ass they have these giant torque wrenches, like 6 feet long. LOL.
They do look badass though!

Yes I have heard they increase weight a bit. However I was told today it opens up options of magnesium racing wheels which are much lighter still!

[pMak26]

The porsche guys i see with these at the track seems like a big pain in the ass they have these giant torque wrenches, like 6 feet long. LOL.


350lbft+ is what we'd to torque them to. No fun. It took two guys, one to pull the massive handle, one to stand on the brakes with everything they had.

[ForTehNguyen]

https://www.youtube.com/watch?v=Xx5ToW0G9d4

[Arizona Vipers]

Yes I have heard they increase weight a bit. However I was told today it opens up options of magnesium racing wheels which are much lighter still!

Who makes magnesium wheels for the Viper? Do they make them for regular lug nuts?

[RedTanRT/10]

Before you buy the wheels, the hubs and the breaker bar/torque wrench talk to some of the Porsche guys. Also look at some of the YouTube videos. You’ll see wheel changes are a two man job.

My viper had them but it was set up for endurance racing. I switched back to studs and fortunately my BBS wheels were set up for both. I don’t see the upside outside of full time racing with a crew.

[Scott_in_fl]

Although, for a street application, it does open up a lot of wheel options.

[SharpMan]

https://www.youtube.com/watch?v=Xx5ToW0G9d4

God that guy sucks. It's not an option but rather a feature. Whether it's a desirable feature or not is debatable but it's not an option on GT3 or GT3RS or a number of the other cars he mentions.

On the GTS they are standard and 5 lugs are the option.

Rant over. Just grumpy about the amount of imprecise information.

[IndyRon]

God that guy sucks. It's not an option but rather a feature. Whether it's a desirable feature or not is debatable but it's not an option on GT3 or GT3RS or a number of the other cars he mentions.

On the GTS they are standard and 5 lugs are the option.

Rant over. Just grumpy about the amount of imprecise information.

What do you mean by “feature”? Are the cars all set up for both from the factory?

[Coloviper]

Speedline magnesium wheels is an option for the center lok.

[stradman]

Speedline magnesium wheels is an option for the center lok.

Exactly. These are what I have been told about.

[10PISTNZ]

I have Forgeline center locks on my Gen II. The torque is 250 ft lbs - Easily manageable. I keep the supplied bar behind the passenger seat wrapped in a towel so as not to rattle.
As for unsprung weight, compared to the OEM pizza dish wheels the adapters and wheels are slightly lighter. I don't know how the weight of Gen V wheels compare.

[Arizona Vipers]

Speedline magnesium wheels is an option for the center lok.

Do they make magnesium wheels for the Viper for regular lug nut wheels? I'm going to email them about it.

[ForTehNguyen]

so the only consideration in this is weight? Seems like a giant pain just to save a little weight. Buying a torque multiplier will help instead of having the giant torque wrench

[Arizona Vipers]

so the only consideration in this is weight? Seems like a giant pain just to save a little weight. Buying a torque multiplier will help instead of having the giant torque wrench

No. wheel for wheel the centerlocks will always weigh a tad more.

[10PISTNZ]

You don't need a giant torque wrench. The standard 1/2" drive goes to 250.
But yes. If you're thinking this would be a weight saving these aren't the way to go. I did it for the way they look.

[SharpMan]

What do you mean by “feature”? Are the cars all set up for both from the factory?

I mean that on the GT3 and GTSRS they aren't an "option". As in you have no choice but to take the cars with the CL wheels. A feature would denote they are standard.

On the GTS the car comes "standard" with the CL feature but 5-lugs are OPTIONAL...as in you have to specify you want them instead. That would make them an optional feature.

I'm a publishing guy so correct word usage is a major hangup for me ;-)

You can convert any car to CL if there's a CL adapter that will bolt up to your bolt pattern or a replacement carrier / hub for your car.

[Coloviper]

Do they make magnesium wheels for the Viper for regular lug nut wheels? I'm going to email them about it.

Not sure but on my 95' Saleen S351 Mystic Edition Speedster, in SEMA show form, it came with center-lok Speedline Corse SE Magnesiums. I have them in the basement but need to have custom hub adaptors built to put them back on. The rims are super, duper light. In the end, not sure about performance or weight. They just look cool, like those people in the gym that lift up and down on those giant ropes. Ha! Ha! I have the Saleen Speedline Magnesuim 1908 rims on car right now. Big thing is not to overtorque and crack them. The center lock lets you torque a lot more. They also need special lugs and rubber isolators so they do not corrode. Again, super light.

In the end, I think the ability to rally torque them down is the big advantage of a center lock set up. And they look cool! :)

[Bob Woodhouse]

To answer the original question, yes they still do make centerlok kits for Vipers, all hubs are similar so these are not Gen V or model specific. Talk to Cory at ViperPartsUSA.com

To clarify, centerloks dont save weight, the add just a little. You can pick from a lot of wheels though and they range in weight from stock at around 36 to 38#'s down to 16.5#'s for the most expensive racing rims. If you choose a rim below about 18#'s expect a short service life, they bend. The original reason for centerloks is to change tires quickly. Teams like them even for sprint racing where they can utilize track time to its fullest ie, you have a 20 minute practice session and want to run adjustment sweeps, say shocks and tires. They save half of the session. Center bolt Torque loads of 250lbs were never used by our teams. Too hard on everything, guns would punch about 175. Most wheels can be converted to centerlok since the bolt circles receive the drive pins from your converted wheel bearing hub and the center receives an adapter or clamping ring that lightly bolts to the center of the wheel.

[Fulltilt]

Not sure if you remember Bob, but my old man ran the #17 car. Same car you swapped paint with a few times, LOL. We still have the #17 car (Chassis 4) and chassis #120 from Brazil.

The Brazilian GT3 car has center locks. They run a converter plate on the regular wheels (Snakeoyl sells a kit I believe, ask for Corey). Basically we can run the wheels from car without centerlocks on the car with them as long as we install the plate (3 screws). Honestly, for most people I would stick with the traditional lug setup. If weight is a big deal, run the regular lug set up with the DSE titanium bolts and studs. I believe the magnesium wheels we have are Perner? We probably have 7 sets of Comp Coupe wheels. I'm a bit of a hoarder so I still have all kinds of Comp Coupe parts. I thought about reviving one of the Comp Coupe threads. I have all of the pictures of when we got the car from Bob back in November of 2002.

[13COBRA]

To answer the original question, yes they still do make centerlok kits for Vipers, all hubs are similar so these are not Gen V or model specific. Talk to Cory at ViperPartsUSA.com

To clarify, centerloks dont save weight, the add just a little. You can pick from a lot of wheels though and they range in weight from stock at around 36 to 38#'s down to 16.5#'s for the most expensive racing rims. If you choose a rim below about 18#'s expect a short service life, they bend. The original reason for centerloks is to change tires quickly. Teams like them even for sprint racing where they can utilize track time to its fullest ie, you have a 20 minute practice session and want to run adjustment sweeps, say shocks and tires. They save half of the session. Center bolt Torque loads of 250lbs were never used by our teams. Too hard on everything, guns would punch about 175. Most wheels can be converted to centerlok since the bolt circles receive the drive pins from your converted wheel bearing hub and the center receives an adapter or clamping ring that lightly bolts to the center of the wheel.

Bob,

I met you a while back. Ryck Sanders took me for 5 laps in your car, made me fall in love with Vipers.

[stradman]

To answer the original question, yes they still do make centerlok kits for Vipers, all hubs are similar so these are not Gen V or model specific. Talk to Cory at ViperPartsUSA.com

To clarify, centerloks dont save weight, the add just a little. You can pick from a lot of wheels though and they range in weight from stock at around 36 to 38#'s down to 16.5#'s for the most expensive racing rims. If you choose a rim below about 18#'s expect a short service life, they bend. The original reason for centerloks is to change tires quickly. Teams like them even for sprint racing where they can utilize track time to its fullest ie, you have a 20 minute practice session and want to run adjustment sweeps, say shocks and tires. They save half of the session. Center bolt Torque loads of 250lbs were never used by our teams. Too hard on everything, guns would punch about 175. Most wheels can be converted to centerlok since the bolt circles receive the drive pins from your converted wheel bearing hub and the center receives an adapter or clamping ring that lightly bolts to the center of the wheel.

Thanks Bob. That's helpful information.

[BlueAdder]

Yes I have heard they increase weight a bit. However I was told today it opens up options of magnesium racing wheels which are much lighter still!

Apparently you also need to do maintenance on that center lock thing every few years. All in all, it's an expensive option.
If anyone makes mag or CF wheels with regular lug nuts for the snake, that'd be a much better option.

The CF wheels for the GT350R are made in Germany I believe, might be worth contacting those people.

I had custom mag wheels for my ZX400RR race bike a few years ago and they were also made in Germany. They were incredibly light! something like 2.8lb front and less than 5lbs for the rear.

[IndyRon]

I mean that on the GT3 and GTSRS they aren't an "option". As in you have no choice but to take the cars with the CL wheels. A feature would denote they are standard.

On the GTS the car comes "standard" with the CL feature but 5-lugs are OPTIONAL...as in you have to specify you want them instead. That would make them an optional feature.

I'm a publishing guy so correct word usage is a major hangup for me ;-)

You can convert any car to CL if there's a CL adapter that will bolt up to your bolt pattern or a replacement carrier / hub for your car.

Ah, I didn’t know that regular lugnuts weren’t an option on the GT3...you only had CL hubs. Makes the decision easy then. LOL

[steve911]

BBS makes/made Magnesium 1 piece Viper Wheels that took conventional lug studs.

Again Talk to Cory at SnakeOyl/Viper Parts USA.

[Nine Ball]

I can have Forgeline wheels built with their centerlock adapter system, but those are built specifically for the Forgeline wheels. We have the wheels machined differently, in order to engage with the hub kit. You'll also need to have centerlocks that use 6-lug pattern, as the lugs get converted into drive pins that get inserted into 6 holes on the backside of the wheel.

My honest opinion, after owning a set for over a year - these work better as street wheels that rarely get swapped out. I found them a minor hassle to swap out between my track setup and the centerlocks, since my track setup was just a normal lug nut wheel. That meant I had to remove the adapter plates each time, and then reinstall them later on. Added about an hour of work each time I swapped wheels out, whereas you could swap 4 wheels easily in about 20 min if they were all lug nut wheels. But, for presence and conversation starters - they were the best wheels I've ever had on a car. People always looked at them confused, wondering how I hid the lug nuts. :)

[Coloviper]

What is the process for ensuring the right back spacing for the hub adaptor with the specific wheel to ensure the right stance? I need hub adapters for my Saleen to put the center loks back on but so many variables and numbers to line up between hub adaptor, magnesium rim and the tire placement to fender. I am not even sure where to start which is why they have sat in the basement for 10 years.

[Arizona Vipers]

Speedline magnesium wheels is an option for the center lok.

I contacted Speedline and they said they are no longer making magnesum wheels, but may again in the future.

[Coloviper]

I contacted Speedline and they said they are no longer making magnesum wheels, but may again in the future.

Thanks, that is good to know!

[ayousef]

I didnt read the whole thread but what I can tell you is some magnesium wheels arent lighter than the lightest aluminum wheels. HRE has ultralight wheels for the Viper, those wheels arent on the website but I can show you. They're the R161LW

https://c1.staticflickr.com/5/4350/37026125586_1d24ccbacd_b.jpg

Weight 17lbs for the fronts and 20lbs for the rears, I doubt you can get any lighter than this at the Viper sizes.

[Scott_in_fl]

^^^^ Beautiful wheel.

[pMak26]

I didnt read the whole thread but what I can tell you is some magnesium wheels arent lighter than the lightest aluminum wheels. HRE has ultralight wheels for the Viper, those wheels arent on the website but I can show you. They're the R161LW

Weight 17lbs for the fronts and 20lbs for the rears, I doubt you can get any lighter than this at the Viper sizes.

Interested. Cost and availability?

[Arizona Vipers]

I didnt read the whole thread but what I can tell you is some magnesium wheels arent lighter than the lightest aluminum wheels. HRE has ultralight wheels for the Viper, those wheels arent on the website but I can show you. They're the R161LW

https://c1.staticflickr.com/5/4350/37026125586_1d24ccbacd_b.jpg

Weight 17lbs for the fronts and 20lbs for the rears, I doubt you can get any lighter than this at the Viper sizes.

Yes agreed. Just like the carbon fiber wheels on the GT350R were much heavier than our wider Sidewinders............

[SharpMan]

I didnt read the whole thread but what I can tell you is some magnesium wheels arent lighter than the lightest aluminum wheels. HRE has ultralight wheels for the Viper, those wheels arent on the website but I can show you. They're the R161LW

https://c1.staticflickr.com/5/4350/37026125586_1d24ccbacd_b.jpg

Weight 17lbs for the fronts and 20lbs for the rears, I doubt you can get any lighter than this at the Viper sizes.

Any idea of the cost?

[Arizona Vipers]

I didnt read the whole thread but what I can tell you is some magnesium wheels arent lighter than the lightest aluminum wheels. HRE has ultralight wheels for the Viper, those wheels arent on the website but I can show you. They're the R161LW

https://c1.staticflickr.com/5/4350/37026125586_1d24ccbacd_b.jpg

Weight 17lbs for the fronts and 20lbs for the rears, I doubt you can get any lighter than this at the Viper sizes.

That's even lighter than the Sidewinders and my Forgelines/Finspeeds
The Sidewinders weigh:
18.42 lbs front
22.91 lbs rear

[pMak26]

Any idea of the cost?

Here is what I was told about these wheels, and I would assume $10k+ for a set:


There are very little details out there about this wheel, as technically we haven't even released it. We're softies when it comes to letting dealers have their way with new wheels styles so Wheels Boutique has been able to order I think now 2 sets before we've even done a press release announcing the new wheel.

Regardless of that, since Wheels Boutique has the only experience with this wheel so far, it would be worth it to reach out to them and ask them to quote you for the set.

We've done a 20" set front and rear, and a 20"/21" set. Your request for 19"s/18"s will have to be approved by engineering as it's quite possible we would need to re-design and re-engineer the wheel for a 18"/19" application. There's a chance they'll say no, but if you think that the fitment you want many other Viper owners would want as well, then maybe the case can be made to do it.

You can reach out to Keenan@WheelsBoutique.com and ask him for a quote to get a ballpark on pricing and we can take it from there

[Scott_in_fl]

Would love to see photos of the 2 sets they've already done on Vipers. This looks like a great wheel in all respects.

[SlateEd]

OP - call Chuck Tator at Tator's garage. He has a customer who had center-locks on a GenV and decided to remove them. He can dish the good, bad, and ugly first hand from the Tech-Team perspective.
At the time, Chuck volunteered to sell them for the owner and he might still have them in the shop if you're really interested.

[sadil]

Does anyone sell centerlock hub adaptor for the viper? I know the forgeline ones are specific to forgeline, but anyone else sell anything?

[ACR-ISH]

God that guy sucks. It's not an option but rather a feature. Whether it's a desirable feature or not is debatable but it's not an option on GT3 or GT3RS or a number of the other cars he mentions.

On the GTS they are standard and 5 lugs are the option.

Rant over. Just grumpy about the amount of imprecise information.

It's not an option it's a feature. Wait for it... "but it's not an option on GT3 or GT3RS or...." lol. I think if you can have it or not, it's an option. If it's not selectable it's either standard or a "feature."

You confused yourself. Don't take me too seriously, I just thought it was funny. :)

[ACR-ISH]

I can have Forgeline wheels built with their centerlock adapter system, but those are built specifically for the Forgeline wheels. We have the wheels machined differently, in order to engage with the hub kit. You'll also need to have centerlocks that use 6-lug pattern, as the lugs get converted into drive pins that get inserted into 6 holes on the backside of the wheel.

My honest opinion, after owning a set for over a year - these work better as street wheels that rarely get swapped out. I found them a minor hassle to swap out between my track setup and the centerlocks, since my track setup was just a normal lug nut wheel. That meant I had to remove the adapter plates each time, and then reinstall them later on. Added about an hour of work each time I swapped wheels out, whereas you could swap 4 wheels easily in about 20 min if they were all lug nut wheels. But, for presence and conversation starters - they were the best wheels I've ever had on a car. People always looked at them confused, wondering how I hid the lug nuts. :)

Those are sexy AF!!!! This is why I love Forgelines.

[Scott_in_fl]

Does anyone sell centerlock hub adaptor for the viper? I know the forgeline ones are specific to forgeline, but anyone else sell anything?

Curious about this as well since there would be soooo many wheel options that open up if we can get away from 6-lug designs.

[efnfast]

I can't believe anybody would voluntarily convert to center locks. They are a god awful miserable experience. BRB need to get out my 6ft. long breaker bar, 6ft long torque wrench that goes up to 1,200ft-lbs just to get to 350ft-lbs and specialized socket.

And driving is super fun, having to always check then before going for a drive just incase they've loosened up (and then wondering while driving if they're staying tight).

However, I shall now utilize their only advantage - look at me, look at me, I have cars with centerlocks, I'm special (don't care they arn't Vipers, lol)

https://farm5.staticflickr.com/4491/38071322692_c7bfe8fab4_c.jpg

[Arizona Vipers]

I can't believe anybody would voluntarily convert to center locks. They are a god awful miserable experience. BRB need to get out my 6ft. long breaker bar, 6ft long torque wrench that goes up to 1,200ft-lbs just to get to 350ft-lbs and specialized socket.

And driving is super fun, having to always check then before going for a drive just incase they've loosened up (and then wondering while driving if they're staying tight).

However, I shall now utilize their only advantage - look at me, look at me, I have cars with centerlocks, I'm special (don't care they arn't Vipers, lol)


It would be for the looks on a street car which is cool if they like the look. But agreed, if you track your car, centerlocks will make your life MISERABLE at the track. lol. My GT3 buddies will have their legs dangling underneath the 8 foot Porsche torque wrench needed to get the lock off, sweat pouring everywhere, cussing, yelling, giving up and taking 15 minute breaks between each wheel. hehe

[ViperGeorge]

I didnt read the whole thread but what I can tell you is some magnesium wheels arent lighter than the lightest aluminum wheels. HRE has ultralight wheels for the Viper, those wheels arent on the website but I can show you. They're the R161LW

https://c1.staticflickr.com/5/4350/37026125586_1d24ccbacd_b.jpg

Weight 17lbs for the fronts and 20lbs for the rears, I doubt you can get any lighter than this at the Viper sizes.

For an ACR-E you need to make sure they have a high load rating. I was warned by an SRT engineer to constantly check my SWIIs on my ACR as he said the downforce could cause fractures. He said the ACR wheel was beefed up for that reason.

[Scott_in_fl]

^^^ Good info. Thx for sharing!

[Space Truckin]

I didnt read the whole thread but what I can tell you is some magnesium wheels arent lighter than the lightest aluminum wheels. HRE has ultralight wheels for the Viper, those wheels arent on the website but I can show you. They're the R161LW

https://c1.staticflickr.com/5/4350/37026125586_1d24ccbacd_b.jpg

Weight 17lbs for the fronts and 20lbs for the rears, I doubt you can get any lighter than this at the Viper sizes.

Because of Covid 19, Wheels and Tires had been sitting in garage for 6 weeks. I just had them installed last Saturday. Frts weighed in at 17lbs, rears at 19lbs....Wow

43051

43052

[Scott_in_fl]

Ah, HRE -- the best. Best designs, so clean, so perfect, well engineered, beautifully machined and finished. Looks terrific.

OEM Sizes?

[Space Truckin]

Ah, HRE -- the best. Best designs, so clean, so perfect, well engineered, beautifully machined and finished. Looks terrific.

OEM Sizes?

Yes OEM sizes. The machining, polishing and finishes are just off the chart. When I picked up boxes I was astounded at little they weighed...freakin crazy light R161LW

:drive:


43056

[ayousef]

Because of Covid 19, Wheels and Tires had been sitting in garage for 6 weeks. I just had them installed last Saturday. Frts weighed in at 17lbs, rears at 19lbs....Wow

43051

43052

Holy crap, if im not mistaken those are almost as light as my Carbon Forgeline wheels which cost ALOT more. I cant remember the exact weights though.

[911racer]

Hi everyone.

Full disclosure, I am not a Viper guy. I am actually a Porsche GT3 Cup guy. I have owned many of the different generations and currently race a 2015. Lots of fun and I have spent time on track racing with Vipers. Different cars and different styles of racing to get the best of them.

The reason I am writing is that we, Demon Speed Motorsports, made a batch of the Viper centerlock components for a customer and we are in process of making a batch of the center bolts to add to the lock pots, the washers and the nuts we already have and sell.

All of these parts are very similar to the 2010 - 2014 Porsche parts, which we make and sell all of the centerlock parts already.

Thanks

Ed

[GTS Dean]

Great thread revival post!

All this hand-wringing and complaining about 6' torque wrenches begs the logical question from my mind:

Why not do what the pros do - Big nitrogen bottle, Big 3/4" or 1" QUALITY pneumatic impact wrench, and the correct socket? You still have to calibrate your impact wrench though.

[Lawineer]

Great thread revival post!

All this hand-wringing and complaining about 6' torque wrenches begs the logical question from my mind:

Why not do what the pros do - Big nitrogen bottle, Big 3/4" or 1" QUALITY pneumatic impact wrench, and the correct socket? You still have to calibrate your impact wrench though.

Aside from the cost and expense of getting a pnuematic impact with torque specs, I dont want to carry a nitrogen bottle around to the track for the added benefits of paying more and having heavier wheels.

Center lug is good for one thing and one thing only: Endurance race pit stop times. The Viper, with it's 8.4L V10 engine and 13 gallon gas tank, is about the worst vehicle I can imagine for an endurance race for (where you start with a true street car- IE WRL). I doubt it could go 20 minutes before it needed to pit. It would probably be the only car I can think of that would heat cycle tires in an endurance race before it wore them out, lol. Literally, the car with the most fuel consumption and the car with the smallest gas tank that I can think of :lol:
Fuel range is one of the many reasons you don't see BRZs racing WRL against Miatas, despite being faster. Miata can stay out there 30-40% longer between pits. That's a big deal considering how long it takes to pit for us mere mortals.

[13COBRA]

Aside from the cost and expense of getting a pnuematic impact with torque specs, I dont want to carry a nitrogen bottle around to the track for the added benefits of paying more and having heavier wheels.

Center lug is good for one thing and one thing only: Endurance race pit stop times. The Viper, with it's 8.4L V10 engine and 13 gallon gas tank, is about the worst vehicle I can imagine for an endurance race for (where you start with a true street car- IE WRL). I doubt it could go 20 minutes before it needed to pit. It would probably be the only car I can think of that would heat cycle tires in an endurance race before it wore them out, lol. Literally, the car with the most fuel consumption and the car with the smallest gas tank that I can think of :lol:
Fuel range is one of the many reasons you don't see BRZs racing WRL against Miatas, despite being faster. Miata can stay out there 30-40% longer between pits. That's a big deal considering how long it takes to pit for us mere mortals.

Time for a fuel cell ;)

[Arizona Vipers]

Aside from the cost and expense of getting a pnuematic impact with torque specs, I dont want to carry a nitrogen bottle around to the track for the added benefits of paying more and having heavier wheels.

Center lug is good for one thing and one thing only: Endurance race pit stop times. The Viper, with it's 8.4L V10 engine and 13 gallon gas tank, is about the worst vehicle I can imagine for an endurance race for (where you start with a true street car- IE WRL). I doubt it could go 20 minutes before it needed to pit. It would probably be the only car I can think of that would heat cycle tires in an endurance race before it wore them out, lol. Literally, the car with the most fuel consumption and the car with the smallest gas tank that I can think of :lol:
Fuel range is one of the many reasons you don't see BRZs racing WRL against Miatas, despite being faster. Miata can stay out there 30-40% longer between pits. That's a big deal considering how long it takes to pit for us mere mortals.

Center locks suck for the track that's for sure. I've had to help my buddy literally hang off his giant torque wrench with all 4 of our feet dangling. LOL
The Viper can do more than 30 minutes, even mine can do it with 900hp and ACR aero drag. It's 16 gallons, not 13 btw. My 720s on the other hand uses more fuel than any car I've ever had, I go from full tank to fuel light in 10 minutes on track, and it has a 19 gallon tank.

[Lawineer]

Center locks suck for the track that's for sure. I've had to help my buddy literally hang off his giant torque wrench with all 4 of our feet dangling. LOL
The Viper can do more than 30 minutes, even mine can do it with 900hp and ACR aero drag. It's 16 gallons, not 13 btw. My 720s on the other hand uses more fuel than any car I've ever had, I go from full tank to fuel light in 10 minutes on track, and it has a 19 gallon tank.

I'm pretty shocked it can last that long. Even assuming you are super ballsy and consume 15 gallons (time to get out on the track, dont run it dry, etc), that's probably 5mpg. That's a lot for the track at 900hp.

[Arizona Vipers]

I'm pretty shocked it can last that long. Even assuming you are super ballsy and consume 15 gallons (time to get out on the track, dont run it dry, etc), that's probably 5mpg. That's a lot for the track at 900hp.

If you average 70mph in a 30 minute session, that's 35 miles, so more like 2mpg. A track like Road America maybe you'd average 100mph and do 50 miles? I'm gonna ask my data buddy what my average speeds should be

[Lawineer]

Yeah that’s a good point. I did something wrong with the math somewhere.
My c7 at half your power definitely couldn’t go 2 full 30 minute sessions on fuel. My friends z06 used 3/4 of a tank. Corvettes had 2 or 3 more gallons too. As we all know30 min sessions aren’ really 30 min of racing. By the time you get out there, cool down lap and there’s always traffic.

Really surprising it can go that long! Heck, I dont get to 100 miles on a tank driving on the street most of the time (I also refill earlier than i would on the track)

[Arizona Vipers]

Yeah that’s a good point. I did something wrong with the math somewhere.
My c7 at half your power definitely couldn’t go 2 full 30 minute sessions on fuel. My friends z06 used 3/4 of a tank. Corvettes had 2 or 3 more gallons too. As we all know30 min sessions aren’ really 30 min of racing. By the time you get out there, cool down lap and there’s always traffic.

Really surprising it can go that long! Heck, I dont get to 100 miles on a tank driving on the street most of the time (I also refill earlier than i would on the track)

Ok, my buddy that's good with data says I'm averaging about 85mph on most tracks, he's 81mph and a little slower than me.
So I go about 42 miles in a 30 minute session.
My new Turbo car is gonna run E85, we put a 16 gallon fuel cell in it, with 1400hp we did the math, we'll be able to do the outlap, one hot lap, *maybe* two hot laps and then enough to get back to the pits lol
Most of the unlimited Time Attack cars run even smaller tanks, they never do more than one hot lap.

[RedTanRT/10]

Center locks suck for the track that's for sure. I've had to help my buddy literally hang off his giant torque wrench with all 4 of our feet dangling. LOL

Absolutely AZ!!

For anyone not familiar with how to take off a center lock wheel, take a look at the various Porsche video's on YouTube. 2 man job to take a wheel off and don't forget that $400 torque wrench/breaker bar!

I switched my CC to studs, I have air jacks and I'll bet I'm quicker at swapping 4 wheels than two guys with center locks and a floor jack.

[Exhlr8n]

Absolutely AZ!!

For anyone not familiar with how to take off a center lock wheel, take a look at the various Porsche video's on YouTube. 2 man job to take a wheel off and don't forget that $400 torque wrench/breaker bar!

I switched my CC to studs, I have air jacks and I'll bet I'm quicker at swapping 4 wheels than two guys with center locks and a floor jack.


I'll take that challenge Mike..! :web_driver:

I love my centerlocks (they are easy-peasy). It's just like one big lug nut. And don't need a second guy or 6' breaker bar (I think mine is a 3' bar with 3/4" sockets. I use a digital gauge, and no problem slapping down 340+lbs. Use wheel chucks to block wheel for removing or torquing down.

The down fall would be availability of parts and prices: Drive pins, Axel stubs, Wheel washers and nuts, lock pots, etc. Although we have found a few manufactures that will make them now.

50560

[RedTanRT/10]

Challenge on Tom!!

Surprised you use wheel chocks vs. a buddy on the brake pedal. Careful with that EMCO tranny!!

[Exhlr8n]

I do it with the EMCO in neutral only (shouldn't effect tranny) and with a chock in front and behind a wheel, works for me.

[str5010]

Just another data point on fuel consumption - my 08 gets about 4.2 mpg on track on average and if memory serves Ive run close to 40 minutes on a few occasions going from full to fuel light on. Funny enough my nearly stock 2006 STi could only manage 3.5 mpg and had fuel pickup issues so you could never runs less than half a tank on banked tracks. That made for fairly short sessions.