Stronger IRS?
Melting Slicks
Joined: Sep 2003
Posts: 2,270
Likes: 118
From: N. Babylon NY
Were still working on the spring rates for the car. I started with 170# then tryed 350 much better, then last weekend I ran 550# springs for the hillclimb. They felt great but I have not autocrossed with the 550's yet I did with both other springs and I think I'm staying with the 550's. I still need to figure out the front end springs yet. If you watch the takeoff of the video you can see the front end raising every time I shift. I have a completely stock front end on the car. I just bought a 32 mm swaybar for the front and I'm going to get a heavier spring up front. Also I plan on getting the spc A arms so I can get more neg camber up front.
For you reference I currently have a VBP front and rear spring-Front 1074# Rear 411# I have the larger ZR1 front sway bar. I had the ZR1rear bar but have changed it to the stock (smaller) one. With scrub tires at the track the rear was too loose (with the larger rear bar). When I get the 9" installed I will be doing more drag racing and maybe some auto-x. No more trips to LimeRock & Pocono.
Regards,
Steve
Racer
Joined: Feb 2003
Posts: 440
Likes: 6
From: aumsville oregon
Nice sounding mill there thetoy. Care to share about your engine?
Id think if the case was strengthened and the pinion cant move the stress just takes it out on the gear assy and everything attached to it. Rigid mounting like that will find more and more weak links lol.
Its like using stiff or solid mounts on a trans and motor eventually the trans case splits, has to be some "give" to things.
Id think if the case was strengthened and the pinion cant move the stress just takes it out on the gear assy and everything attached to it. Rigid mounting like that will find more and more weak links lol.
Its like using stiff or solid mounts on a trans and motor eventually the trans case splits, has to be some "give" to things.
Thanks for the spring numbers I am going to check into that front spring.
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
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Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 109
From: Austin Texas
Race Director
Joined: Jul 1999
Posts: 16,282
Likes: 104
From: Sun city CA
I just looked... its not there anymore... maybe I saw it somewhere else.
Some people from what I have heard build a cage for it. How that would be done I have no idea. I think it is more of a C5 mod
Last edited by Zrxmax; Oct 4, 2012 at 06:59 PM. Reason: More info...
Race Director
Joined: Jul 1999
Posts: 16,282
Likes: 104
From: Sun city CA
One day I was cruising along pretty good and a tooth came off the ring gear and passed under the ring gear and cracked to case. It didn't leak or anything and I could still drive it. However, over the next few weeks it started getting worse with a new sound and so I had to replace the whole thing. I still have the case and it has been repaired... just have not needed it for anything yet.
Thread Starter
Advanced
Joined: Sep 2012
Posts: 50
Likes: 0
crazy idea
If I got upper and lower a arms for the rear end of the C4 IRS, a craddle for the rear end and a sway bar added would this take some stress off of the axles, rear, u joints etc? Make them last longer?
Racer
Joined: Apr 2002
Posts: 252
Likes: 30
From: San Diego Ca
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
They way its mounted the case has no other choice except to absorb a LOT of stress. If you could take the stress off the case it just moves outward. Add some squat and it just gets worse
Its just not made for high powered 1/4 mi racing its like taking a TPI intake and pulling your hair out trying to get top end power out.
Youll spend lots and get fru$tration
Not shooting down anyones ideas just saying-
Its just not made for high powered 1/4 mi racing its like taking a TPI intake and pulling your hair out trying to get top end power out.
Youll spend lots and get fru$tration
Not shooting down anyones ideas just saying-
Thread Starter
Advanced
Joined: Sep 2012
Posts: 50
Likes: 0
They way its mounted the case has no other choice except to absorb a LOT of stress. If you could take the stress off the case it just moves outward. Add some squat and it just gets worse
Its just not made for high powered 1/4 mi racing its like taking a TPI intake and pulling your hair out trying to get top end power out.
Youll spend lots and get fru$tration
Not shooting down anyones ideas just saying-
Its just not made for high powered 1/4 mi racing its like taking a TPI intake and pulling your hair out trying to get top end power out.
Youll spend lots and get fru$tration
Not shooting down anyones ideas just saying-