It should be worse!

[TrackAire]

Lol. This is the only reference to a Porsche street car beating a Viper I've seen. He even bet a Viper ACR hardcore owner $500. This guy is driving this RS to the limits. 1.33 with only 500hp and 339 tq..not too shabby.

That is a great lap, but how many did he do in a row at those lap times? Hero laps make great bragging rights but can that car do this for 20 minutes non-stop??
(maybe the Porsche can, IDK for sure).

In my experience, as soon as I hit traffic my lap times can be up to 10 seconds a lap slower if I can't get past them quickly. That makes a huge difference in how much thermal load the car generates. A couple of "slow laps" and a couple of all out laps and the car may not ever over heat if this cycle is done over and over again.....which often happens at HPDE track days.

Cheers,
George

[Rapidrezults]

That is a great lap, but how many did he do in a row at those lap times? Hero laps make great bragging rights but can that car do this for 20 minutes non-stop??
(maybe the Porsche can, IDK for sure).

In my experience, as soon as I hit traffic my lap times can be up to 10 seconds a lap slower if I can't get past them quickly. That makes a huge difference in how much thermal load the car generates. A couple of "slow laps" and a couple of all out laps and the car may not ever over heat if this cycle is done over and over again.....which often happens at HPDE track days.

Cheers,
George

I have no idea how Porsche's run at the track at sustained load, but I thought it was interesting because it's the only Porsche video that I've seen with a stock car with R6's running 1.33's at Laguna.

[Darius]

I have no idea how Porsche's run at the track at sustained load, but I thought it was interesting because it's the only Porsche video that I've seen with a stock car with R6's running 1.33's at Laguna.

Ya those 4.0's are bad ass, to bad they want close to 500k for them now.

[Rapidrezults]

Ya those 4.0's are bad ass, to bad they want close to 500k for them now.

Hopefully, an ACR Extreme will appreciate to half that one day.

[Nine Ball]

That's great….send me some tacks and lap times please. I bet that ACR extreme hood would be a huge help. I was so committed to fixing this problem, I tried to source an extreme hood. Lots of luck with that I was told!

The ACR extreme has the exact same six vents that your TA hood has. Those other vents are above the wheel wells, to reduce pressure in that wheel well. They won't help with cooling at all, since that wheel well is isolated from the engine bay via gaskets. Go pop your hood on the TA, the vent would be where the rock guards are under your current hood.

[GTSilver]

That is a great lap, but how many did he do in a row at those lap times? Hero laps make great bragging rights but can that car do this for 20 minutes non-stop??
(maybe the Porsche can, IDK for sure).

In my experience, as soon as I hit traffic my lap times can be up to 10 seconds a lap slower if I can't get past them quickly. That makes a huge difference in how much thermal load the car generates. A couple of "slow laps" and a couple of all out laps and the car may not ever over heat if this cycle is done over and over again.....which often happens at HPDE track days.

Cheers,
George

Coming from a porsche gt2 that has been tracked here in our part of the world (Bahrain International circuit) where weathers here are suitable for track days its around 25-30 celcius which isnt that cool to be honest but i've been tracking my car for the past 6 years and knock on wood without any issues. I'm not promoting porsche however they make great relaible track cars due to their years in motorsports. I run my car for around 20-25 minutes without any issues, to be honest i get worked out and tired before the car does due to heat and concentration. Its not a quincedence that the majority of tracks around the world you'll always see a 911 because they are that reliable and dont have any heating issues or other track related issues. The only thing is the factory understeer that you need to work around in terms of alignment and car setup. My best lap time was 2:13 and i still see there's more time to improve because a friend with a gt2 best time was 2:12, for reference a multi gt3 cup middle east and 458 challenge winner both in asia and europe and lemans podium racer got 2:10 in his mclaren p1.

In my opinion i think a dry sump with a bigger tank could really benefit the viper in terms of oil temps and different oil viscosity as well. A radiator as well but as seen by the OP it only helped with the time to cool after a hot lap.

Last thing the lap time of the 4.0 was from Jesse a forum member at rennlist but there are other members that have achienved faster lap times on LS.

Thanks
Yousif

[BLUETA#1]

1.36.5 at Laguna and 1.43 at Sonoma Raceway. Getting a Porsche is cool, if you like getting passed by Vipers.

Is mostly the driver. I have tracked Porsches for years without issues. I was at a Viper club event and I was passing several Vipers in my modified Golf R and I was in the fastest run group. Yes some Vipers kicked my ass, but I was faster than other Vipers. I am not slamming the Viper…its does not suit my desire to drive quickly for 25 minutes. I posted here for help and I get a lot of denial and debate!

[ACRucrazy]

Your first post did not have one question. It was a rant and statement about the Viper being your first and last American car. Also noting hour just ordered a new Porsche and dragging in the POS Z06 into the mix.. I don't know how you could expect this thread to go any other way.

[sadil]

So what Porsche are you planning to gef? 911 GT3? Turbo?

[XSnake]

Were all your previous 9 Porsches street cars? Were your 3 National titles in a Cup car? Hope we aren't comparing races cars to street cars here.

IMO, if you found a way to seal the top of the radiator to prevent air from going over it and forcing it through you'd probably solve your issue.

[Coloviper]

Pull the Mopar PCM and run without it next time. A few others seem to have posted issues with heat after install of Mopar PCM. Having modded many cars, including my 06' Coupe when I had it, my current 96' RT and countless Saleens, it seems like only a left as stock car can provide repeatable reliability anymore.

I don't have experience with the new Gen V but in my other cars, I have added Snow Performance Methanol Injection with great success and it helped a lot. Heat and high altitude are even worse to deal with. The methanol injection really helped.

Nothing wrong with a Porsche car, though there are a ton out there. In the end before you give up hope, I would just go back over the check list. No air bubble in the coolant system. Check and even replace the hoses with high performance silicon ones as seems a cavetate issue potential. Check or even replace the thermostat with lower temp one if desired. Lastly, check the water pump.

If none of those are at fault, can't be the cooling system and it is something more severe.

Hey my 04' Cayenne just started to have increasing heat issues random, but is consistent while climbing a hill under load. Never had an issue before but just clicked over 77k miles. Goes up, comes down. I need to figure it out but cooling issues are bitch to resolve. Start easy items then move from there.

My gut, and it is just gut, tells me the TA2.0 needs stronger radiator hoses and when under a lot of heat, they just soften up and cavetate.

[BLUETA#1]

Were all your previous 9 Porsches street cars? Were your 3 National titles in a Cup car? Hope we aren't comparing races cars to street cars here.

IMO, if you found a way to seal the top of the radiator to prevent air from going over it and forcing it through you'd probably solve your issue.

Yes..but set up for the track.
I wish! Never drove one.
I would not do that. I have however studied the cooling systems in the Viper race cars. (The radiator almost lays flat.)
Yes, we sealed all the air leaks.

[BLUETA#1]

Pull the Mopar PCM and run without it next time. A few others seem to have posted issues with heat after install of Mopar PCM. Having modded many cars, including my 06' Coupe when I had it, my current 96' RT and countless Saleens, it seems like only a left as stock car can provide repeatable reliability anymore.

I don't have experience with the new Gen V but in my other cars, I have added Snow Performance Methanol Injection with great success and it helped a lot. Heat and high altitude are even worse to deal with. The methanol injection really helped.

Nothing wrong with a Porsche car, though there are a ton out there. In the end before you give up hope, I would just go back over the check list. No air bubble in the coolant system. Check and even replace the hoses with high performance silicon ones as seems a cavetate issue potential. Check or even replace the thermostat with lower temp one if desired. Lastly, check the water pump.

If none of those are at fault, can't be the cooling system and it is something more severe.

Hey my 04' Cayenne just started to have increasing heat issues random, but is consistent while climbing a hill under load. Never had an issue before but just clicked over 77k miles. Goes up, comes down. I need to figure it out but cooling issues are bitch to resolve. Start easy items then move from there.

My gut, and it is just gut, tells me the TA2.0 needs stronger radiator hoses and when under a lot of heat, they just soften up and cavetate.

I put in aluminum hoses…no way they are collapsing. Did everything you mentioned above exempt the water pump. Doing the ECU comparison in a couple weeks.

Talk about hills…my favorite race was Pikes Peak. The GT3's dominate the class and I was considering setting this car up for Pikes Peak. I ran water/menthol injection on the last car I raced up there…I think the Viper would need more than that.

[XSnake]

Yes..but set up for the track.

So you had to modify them as well?

[Blue T/A 2.0]

With all this negative rap, it makes me wonder if I should get rid of my TA while I can before they go the way of the ZO6/7 and get me a Porsche. I have really liked my TA up till now, but now I wonder if it is worth keeping.

[TIME]

This is a great thread. Did it overheat in stock form?
What if you, BlueTA#1, could borrow a car that never overheat, and then run them, one after the other. If yours overheat, and the other does not, well then there might be a difference. It is tough to compare though, if the cars are not set up the same way but it could give an indication, as it will be the same driver in different cars.
For sure, we can do the experiment with my totally stock TA1.0 if you are out west - in return for some lessons of course.

[ViperSmith]

With all this negative rap, it makes me wonder if I should get rid of my TA while I can before they go the way of the ZO6/7 and get me a Porsche. I have really liked my TA up till now, but now I wonder if it is worth keeping.

"All this negative rap" - not to be a jerk but you have a modified car that is overheating and you are virtually the only person reporting it.

It sounds like there is an issue with your car, but to act like it is having the issues the Z06 is having is a stretch. I do hope you can pinpoint the issue and hopefully get it resolved.

[Blue T/A 2.0]

"All this negative rap" - not to be a jerk but you have a modified car that is overheating and you are virtually the only person reporting it.

It sounds like there is an issue with your car, but to act like it is having the issues the Z06 is having is a stretch. I do hope you can pinpoint the issue and hopefully get it resolved.

My car is stock, no issues. I am Blue T/A 2.0. The car with the issues is Blue TA#1. He has already ordered a new Porsche.

[ViperSmith]

My car is stock, no issues. I am Blue T/A 2.0. The car with the issues is Blue TA#1. He has already ordered a new Porsche.

Apologize. I wonder if it is something with the TA 2 then? Lots of guys running them hard, but haven't heard much about the TA 2.

[Blue T/A 2.0]

Apologize. I wonder if it is something with the TA 2 then? Lots of guys running them hard, but haven't heard much about the TA 2.

No problem, those names are close. Not sure about the TA 2.0, but I hate to think it is afflicted with issues particular to it and continues to be in the spot light with all this negative rap. Full disclosure, I have not tracked mine, so I do not have any real world info to share, but you won't be able to give one away if this bad rap continues...

[BLUETA#1]

"All this negative rap" - not to be a jerk but you have a modified car that is overheating and you are virtually the only person reporting it.

It sounds like there is an issue with your car, but to act like it is having the issues the Z06 is having is a stretch. I do hope you can pinpoint the issue and hopefully get it resolved.

You missed my point…or I could have been more clear. The vette is un-drivable on the track. At least I can get 3 good laps, recover and get another few. Yes, I am the only person "reporting it" but I am not the only person experiencing it.

[BLUETA#1]

This is a great thread. Did it overheat in stock form?
What if you, BlueTA#1, could borrow a car that never overheat, and then run them, one after the other. If yours overheat, and the other does not, well then there might be a difference. It is tough to compare though, if the cars are not set up the same way but it could give an indication, as it will be the same driver in different cars.
For sure, we can do the experiment with my totally stock TA1.0 if you are out west - in return for some lessons of course.

I made a big mistake….I modified it before delivery. I never got to drive it stock. In hind site, I that was not very bright. I planned to switch cars, but I don't want to push someone another person's car. I have had a fast ride in a Viper a while ago….but it was only for 2 laps.

[BLUETA#1]

So you had to modify them as well?

The only bad rap on the Porsche are the alignment needs when delivered. I have added tie-rod ends to gain more camber, changed the spring rates, etc. I have never touched a motor except on a twin turbo that I had…I did a minor tune on the motor. The only Porsche that I did not have to modify was my RS….that hauled A** right out of the box.

A friend of mine races a Porsche cup car and he brought out his '15 GT3 street car Friday. He runs 2 seconds a lap quicker than me and his temp never got above 185.

[kaamacat]

Porsches run cooler with the radiator in the back. You know......so they don't pickup the heat coming off the cars in front of them.

I have been at all day sessions in Las Vegas at the Viper Experience and never saw a single car over heating.

Not sure what Porsche you are talking about...I had a 2011 GT3RS and it had 3 rads for various cooling items, left/center/right front
fender and hood areas.

[ViperDC]

ViperExchange should hire this guy to drive their GT3 car next year! Ultimate driver