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Author Topic:   Leaf Springs and Shocks for a heavy car
bigyellow
Dirt Roller

Total posts: 22
posted March 18, 2002 05:31 AM
I am new to this site, and you have probably covered this before, but I can't find an answer by looking through the past posts, so please bear with me.
I have a 79 Nova that I race on a 3/8 mile high banked track. The car weighs in at 3600 pounds, and I need some good advice on leaf springs and shocks. The springs and shocks that are on the car were used up when I got them, so I don't even have a good baseline to start with.
I was considering Landrum springs, with a 250 in the RR, and a 200 in the LR.
I don't have a clue which shocks to use. Bilstein? Pro? The shocks that are on the car are Pro WB, but I can't really say whether they are good or not, since they were used.
Any help would be appreciated!!!!!

redneck racing
Dirt Freak

Total posts: 276
posted March 18, 2002 12:31 PM
I have a 73 nova your spring rate sounds about right as for the shocks im runnig a stock mount set made by duetch which i bought through Day Motorsports i believe these shocks are adjustable in 3 settings these shocks have held up great and are inexpensive.

bigyellow
Dirt Roller

Total posts: 22
posted March 18, 2002 04:13 PM
quote:
Originally posted by redneck racing:
I have a 73 nova your spring rate sounds about right as for the shocks im runnig a stock mount set made by duetch which i bought through Day Motorsports i believe these shocks are adjustable in 3 settings these shocks have held up great and are inexpensive.

Thanks for the input! I didn't mention it, but I can't use stock location stocks because of weight jacks and a Ford 9".


bigyellow
Dirt Roller

Total posts: 22
posted March 18, 2002 04:19 PM
I have noticed from reading posts on this site that a lot of people use a stiffer spring on the LR than on the RR. I always thought you put the stiffer spring in the RR. Can anybody clarify this for me?

uforacing51
Dirt Freak

Total posts: 349
posted March 18, 2002 04:51 PM
It helps plant the RR and give you forward bite, Have fun. WELCOME!!

[This message has been edited by uforacing51 (edited March 18, 2002).]

bigyellow
Dirt Roller

Total posts: 22
posted March 18, 2002 07:47 PM
Does that mean you also need more weight on that wheel? I hate to sound so ignorant, but I thought the idea was to resist load transfer from the left to the right by using stiffer springs on the right, along with stiffer shocks. I also thought that was why you used tie down shocks on the left.

bigyellow
Dirt Roller

Total posts: 22
posted March 19, 2002 07:29 PM
Well, I ordered two 225 pound leafs for the back, I sure hope that is right.

millerlt3
Dirt Forum Racer

Total posts: 96
posted March 19, 2002 09:16 PM
bigyellow, your question about the stiffer spring on the LR is no myth. what you achieve by putting the heavier spring on the LR is you allow the car to roll over on entry so as to achieve side bite but when you get back in the throttle you want to get the maximum forward bite you can, in a sense when you are exiting the corner you acually want the front end to pushout or taking the car from being sideways to the transition of being staight when you hit the staightaway, and the rule of thumb is that the heavier spring gets the power first so when you get back in the gas it gets back on the LR first and drives you out of the corner. Landrum or flexi-flyer make good quality leafs and if you call either of thier tech departments they can recomend the best springs for your application, and also verify if a hevier LR spring is best for you and the track you race on. I have been told if you put the heavy spring on the RR it will tend to cause the car to have a loose condition. but thats just my opinion.

bigyellow
Dirt Roller

Total posts: 22
posted March 21, 2002 11:17 AM
Thanks for the great reply! I contacted Landrum by e-mail three times for information and never heard anything, so I bought another brand of springs from speedway. Their tech guy said to start out with the same rates and adjust from there. That sounded good to me, so I'll give it a try.
I am leaning towards QA1 shocks, any suggestions?

millerlt3
Dirt Forum Racer

Total posts: 96
posted March 21, 2002 06:41 PM
There are alot of quality shock manufactures out there today so I guess its a matter of personal preference. Personally I have always prefered Carrera. Just my opinion though.

bigyellow
Dirt Roller

Total posts: 22
posted March 22, 2002 04:31 PM
Does Carrera offer a rebuildable shock?

millerlt3
Dirt Forum Racer

Total posts: 96
posted March 22, 2002 09:11 PM
Not that I'm aware of?

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