Longacre Tireliefs

[Arizona Vipers]

Has anyone used these? http://www.longacreracing.com/produc...70&prodid=7366

Seems really cool...

[Back In Black]

They work. I have a complete kit for sale if you want to try them. $130 shipped.

[Arizona Vipers]

They work. I have a complete kit for sale if you want to try them. $130 shipped.

You didn't like them? Why are you selling?

[Dan Cragin]

I had problems with them leaking

[Back In Black]

You didn't like them? Why are you selling?

They are illegal in Trans Am and SCCA Club so I had to remove them.

[Arizona Vipers]

They are illegal in Trans Am and SCCA Club so I had to remove them.

Do you know if they bled air off fast enough? That's my only concern. My tire temps jump about 10* on the track in 1-2 sessions, so if they bled slow, the really wouldn't help me out.

[Back In Black]

Do you know if they bled air off fast enough? That's my only concern. My tire temps jump about 10* on the track in 1-2 sessions, so if they bled slow, the really wouldn't help me out.

They bleed off rapidly.

[XSnake]

I bought a set but sent them back as I didn't wanna drill my wheels.

[Arizona Vipers]

I bought a set but sent them back as I didn't wanna drill my wheels.

Do you have to drill your wheels? It says this- "Use with quick change adapters or mount directly in your wheels by drilling a 1/8" NPT thread hole."

[steve911]

Yes you do. How do you think the 1/8" Pipe thread hole is made into your wheel?

[Arizona Vipers]

Yes you do. How do you think the 1/8" Pipe thread hole is made into your wheel?

ahhh, I thought you could just hook them on your valve stems. lol. It's a great idea, but sounds like a lot of work. I'll stick to bleeding manually lol

[steve911]

As I thought it was previously stated, most sanctioning bodies do not allow them.

[TooBlue]

They work. I have a complete kit for sale if you want to try them. $130 shipped.

Hey Keith
Did you need to drill new holes in your wheels?

Am I understanding this wrong but the description in the "Quick Change adapters" page the overview states, "Installs in 5/8" hole in rim - use factory valve stem hole or drill a new one"

It would seem to me that you could install the quick change adapters in two sets of wheels. (For track use). One set of quick change adapters on the car with blender valves installed. Then when you want to change out spent tires/wheels in the pits you could unscrew the bleeder valves and screw them into the second set of wheels/tires with the quick change adapters installed...?

Naturally you would need to install the QC adapters in the wheels when the tires were off but that is quite frequent on track tires.

The theory seems like a good idea. We usually spend some time in the morning of a track day trying to decide what cold tire pressure to start with. As you track guys know, hot tire air pressure depends on the track, outside air temperature, moisture/humidity in the tire itself etc.. The goal is to "guess" the starting cold pressure to end up close to our target hot air pressure. As stated above, that can take a couple sessions. With this system you could maintain a constant desired tire pressure from the first lap to the last lap.

I think a lot of us are HPDE guys and don't need to worry about sanctioning bodies.

Then again, I am usually so wound up at a track event that checking the tire pressures manually along with other track chores helps to burn off some nervous anxiety between sessions...LOL

[Back In Black]

Mike,

There are two methods to install them. Drill and tap a 1/8" pipe thread hole somewhere on your rim. Could be next to your valve stem but doesn't have to be. This is a permanent install of the tirelief. The other method uses an adapter that the tirelief screws into. This adapter needs a 5/8" hole. It is self sealing so you can remove the tirelief any time you like. Transfer them to a different set of wheels. You can put any pressure you like in the tires (for storage, etc.) and it will stay. Otherwise, you're constantly adjusting the tireliefs, something you do not want to do. The adapters are meant for use on steel wheels but could be made to work on an aluminum wheels. They just need a bit more clearance around them that you may not have on an aluminum wheel. You could install them in the barrel of the wheel though. Ideally, you would replace the valve stem with it. They would not work on my OZ's that way. There's an adapter that screws in for inflating or deflating the tire.

From left to right: Self sealing adapter, tirelief, schrader valve adapter, adapter/tirelief assembly.