Budget '69 Camaro Track Car - NO WHINERS! - Page 112 - Lateral-g Forums

Track Junky · #**1111** 05-22-2014, 09:12 PM

Quote:

Originally Posted by GregWeld

I have no idea what you should be running -- hot or cold!

I know I'm running a far smaller tire (245) and we're running 29.5 rear and 31.5 front.... on the Mustang

Typically I hover around 34-36 lbs hot on the 100 tread wear. I've had conversation with the guys running slicks and they tell me they start out at about 28 cold. I know I'll get some input from the NASA boys when I get there so I'll wait and see what they recommend.

Quote:

Originally Posted by Damn True

Tire rack will heat cycle them for you. It's not expensive and you know they were brought to the correct temp for the correct amount of time.

True, I remember that option but this time around I didn't see it or I would have gone that route. Don't know, maybe I missed it.

**GregWeld** · #**1112** 05-22-2014, 09:24 PM

G -- I was running 28 rear and 29 front COLD --- but that wasn't enough... they were colder in the middle of the tire than they needed to be...

SO that's where the temp probe came into play -- and it told us where we should be.

Track Junky · #**1113** 05-22-2014, 09:29 PM

Quote:

Originally Posted by GregWeld

G -- I was running 28 rear and 29 front COLD --- but that wasn't enough... they were colder in the middle of the tire than they needed to be...

SO that's where the temp probe came into play -- and it told us where we should be.

Thanks Greg. That gives me a bit more insight and reminds me that I need to drop by Sonoma tomorrow to pick up a tire temp probe.

**Sieg** · #**1114** 05-22-2014, 09:31 PM

Quote:

Originally Posted by GregWeld

When I came back in - I got scolded a little... LOL

..........and his helmet was a little tough to get on the next session.

**GregWeld** · #**1115** 05-22-2014, 09:39 PM

Quote:

Originally Posted by Track Junky

Thanks Greg. That gives me a bit more insight and reminds me that I need to drop by Sonoma tomorrow to pick up a tire temp probe.

Pick up a Durometer while you're at it -- it's the only way you'll know when these tires are shot.

Don't think you had showed up yet -- but on Saturday I was describing a weird "set" the car was taking in the turns... kind of porpoising... and Ron starts with his magic tricks --- next thing he's telling me the right front is hard... the other three were fine -- But I changed all of them. BINGO the porpoising was gone! The hard tire was losing traction - 'causing the weirdo dance the car was doing. WHO KNEW!

Ron knew dat's who knew... His durometer told him all he needed to know.

The Hoosiers are toast when they hit 56... even though they were fairly new and looked fine!

**Sieg** · #**1116** 05-22-2014, 10:06 PM

The tire durometer & pyrometer, pressure gauge, and infrared thermometer are invaluable tuning tools. Data delivers solutions!

Vince@Meanstreets · #**1117** 05-22-2014, 10:17 PM

data gives you a direction. Can't get to optimum without knowing where you are starting.

Track Junky · #**1118** 05-23-2014, 07:14 AM

Quote:

Originally Posted by GregWeld

Pick up a Durometer while you're at it -- it's the only way you'll know when these tires are shot.

Don't think you had showed up yet -- but on Saturday I was describing a weird "set" the car was taking in the turns... kind of porpoising... and Ron starts with his magic tricks --- next thing he's telling me the right front is hard... the other three were fine -- But I changed all of them. BINGO the porpoising was gone! The hard tire was losing traction - 'causing the weirdo dance the car was doing. WHO KNEW!

Ron knew dat's who knew... His durometer told him all he needed to know.

The Hoosiers are toast when they hit 56... even though they were fairly new and looked fine!

I remember the story about the durometer. Have to see if I can find one in time. Last I heard Hoosiers are good for about 10 heat cycles. Not sure how to take that info because to me it sounds like 10 sessions.

**GregWeld** · #**1119** 05-23-2014, 07:42 AM

Quote:

Originally Posted by Track Junky

I remember the story about the durometer. Have to see if I can find one in time. Last I heard Hoosiers are good for about 10 heat cycles. Not sure how to take that info because to me it sounds like 10 sessions.

If you drive like I do - you can stretch that out to about 20

**Sieg** · #**1120** 05-23-2014, 08:25 AM

Quote:

Originally Posted by Track Junky

I remember the story about the durometer. Have to see if I can find one in time. Last I heard Hoosiers are good for about 10 heat cycles. Not sure how to take that info because to me it sounds like 10 sessions.

Happy shopping: http://www.longacreracing.com/default.aspx

Ron should also be able to hook you up this equipment.