Road Course Junkies, Let's compare notes
Thread Starter
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
what's the difference?. I wasn't happy at all when my 15" tires did that. Too much squishy feeling in the rear. I guess it depends on your driving style. I prefer 17" tires, i just need to get wider ones.
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
If a tire "rolls over", there is wear on the sidewalls. In this case there is so much grip that the wheel is pushing out relative to the tire contact patch. It's not as bad as it looks; it doesn't feel squishy or floaty at all. Also it may not be as much movement as it looks, I'm using 275/45-16's on 11" wheels, so the sidewall is stretched out a little to begin with.
Last edited by 69autoXr; Jun 21, 2007 at 09:50 AM.
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
About negative 2.5f and 2r. I have only taken tire temps once, at an autocross, where I think getting meaningful temperature data is difficult at best; there are too many variables that can affect the temps from the time you're on the course to the time you take the readings. That said I don't have the numbers with me so I can't say exactly what they were. I tend to look more at the wear across the tire tread, which is typically very even in my case.
Thread Starter
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
I am reluctant to go to higher rate springs. I'm already at 550/330. I drive my car to the events over 500 miles from home.
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
That's a cool thing about leaf springs in that the spring rate can be easily adjusted by moving the mounts inward and outward. (ie Dual mount rear springs)
Adjustable coil-overs is always a good option, too. In the near future I'll be going to those.
Race Director
Joined: Dec 2000
Posts: 10,896
Likes: 2
From: CO
Adjustable spring rates are your friend.
That's a cool thing about leaf springs in that the spring rate can be easily adjusted by moving the mounts inward and outward. (ie Dual mount rear springs)
Adjustable coil-overs is always a good option, too. In the near future I'll be going to those.
That's a cool thing about leaf springs in that the spring rate can be easily adjusted by moving the mounts inward and outward. (ie Dual mount rear springs)
Adjustable coil-overs is always a good option, too. In the near future I'll be going to those.
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
Originally Posted by Kalway
Adjustable coil-overs is always a good option, too.
Originally Posted by flood
Or adjustable spring perches.
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Thread Starter
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
The front ain't that bad either, to bust a ball joint down and pop a different spring in.
Burning Brakes
Joined: Mar 2006
Posts: 1,095
Likes: 5
From: Oldham County Louisville, KY
I may have missed it but what are youguys running for steering? I saw someone mention steeroids but I can't believe all you road course guys are using it.
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
Burning Brakes
Joined: Feb 2000
Posts: 1,246
Likes: 1
Can you do it in 5 minutes? All it takes is removing the lower bolt, turning the collar (& lock collar if you have that) so they thread off the bottom of the shock, remove spring, insert new, thread collar (& optional lock collar) back on and put the lower bolt back in.
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
Agreed. Changing rear springs is nothing. Fronts are a little more involved.
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
I may have missed it but what are youguys running for steering? I saw someone mention steeroids but I can't believe all you road course guys are using it.
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
Le Mans Master
Joined: Nov 2004
Posts: 6,434
Likes: 0
St. Jude Donor '07
I'm going to take it out again today
Does this look right for a 5-leaf?
Last edited by Yellow73SB; Jun 23, 2007 at 04:17 PM.
Le Mans Master
Joined: Nov 2004
Posts: 6,434
Likes: 0
St. Jude Donor '07
I may have missed it but what are youguys running for steering? I saw someone mention steeroids but I can't believe all you road course guys are using it.
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
Le Mans Master
Joined: Nov 2004
Posts: 6,434
Likes: 0
St. Jude Donor '07
The bottom one isn't mine
This is mine
the bottom one is a C2 sebring racer. I believe the long arms cancel out the thickness though. It has the front tie rods like norvals to have no bumpsteer also. They came in a 400 dollar rig also
This is mine
the bottom one is a C2 sebring racer. I believe the long arms cancel out the thickness though. It has the front tie rods like norvals to have no bumpsteer also. They came in a 400 dollar rig also
Burning Brakes
Joined: Mar 2006
Posts: 1,095
Likes: 5
From: Oldham County Louisville, KY
I may have missed it but what are youguys running for steering? I saw someone mention steeroids but I can't believe all you road course guys are using it.
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
69autoXr - IMO that is one of the baddest vettes I have ever seen.
I have a lot of work to do to mine. New engine and tranny so far. Starting to consider suspension. I don't mind a rough ride. I want something to go where I point it. Weekend cruise, solo events, maybe autoX if I get the bug.
Go to the gallery to see what I started with and where I'm at now.
http://www.71canam.com
Not sure on the bar sizes but they are stock big block.
Current engine is 383 with Aluminum radiator/SPAL with fans so I have dropped a little weight in the front.
A lot of good knowledge in this thread.