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Author Topic:   Setup Questions
Harv
Dirt Roller

Total posts: 8
posted August 22, 2005 01:49 PM  
We are running a K-Mod (Kosiski) on a 1/2 mile banked track. Track is usually slick. The car has a metric front end. We are running 4 bar on LR and Z-Link on RR. The car is alway loose in the middle and off the corner. Just wondering if the spring package looks OK. Also we are bottoming out on the RF. We went from a 600 to 650, but it still bottomed out. Any thoughts or suggestions would be appreciated.
LF 700 RF 650 LR 300 RR 200
J-Bar is 15 degree angle.
Pullbar is about 15 degrees down to front
THe car is not real bad. We started 21st Saturday and got to 10th, but need to get it better through and off the corner.
Thanks
Harv

wfoondirt
Dirt Forum Champ
Total posts: 505
posted August 22, 2005 02:27 PM  
Unless your running nova lowers you are too soft on the front.

Harv
Dirt Roller

Total posts: 8
posted August 22, 2005 03:31 PM  
This mod has a Chevelle front end

Kromulous
Dirt Forum Champ
Total posts: 796
posted August 22, 2005 03:45 PM  
LR, spring behind?

Z-Link RR, spring is floated (on the birdcage) in front? or on the arm (swing arm)?


Harv
Dirt Roller

Total posts: 8
posted August 22, 2005 04:25 PM  
LR Behind
Z-Link spring is on the arm


Harv
Dirt Roller

Total posts: 8
posted August 22, 2005 04:27 PM  
I forgot to add we run between 160 and 170 LR bite


Kromulous
Dirt Forum Champ
Total posts: 796
posted August 22, 2005 04:50 PM  
We run the same set up, love it so far. 160 to 170lbs LR bite, wow, i havnt got that high yet, but were in the 145 or so range.

Depends on whats its doing in the middle, raising the panhard might help. On our car, if were off the gas and enter the corner flat, off the bars, raising the PH bar will tighten us. Opposite if its still up on the bars.

Swapping the front springs around might help, i run 100lb split, LF lighter.

Also i think i would try to stiffen that RR spring. How you get away with a 200lb spring on a swing arm i have no idea. 300lb LR is bit high, but i run a 275lb LR on a high banked tri-oval where we dont ever get all the way out of the gas.

WHats the track like?


donslink1
Dirt Freak

Total posts: 318
posted August 22, 2005 05:12 PM  
Chevelle front, What year is it, I have never heard of them running that, But Andykmod knows a lot about them. he could probobly help ya.

Harv
Dirt Roller

Total posts: 8
posted August 22, 2005 07:06 PM  
Correction, The parts we have been buying for the front end are for metric nova or monte carlo.
The track is medium bank with sweeping corners.
Kromulous, what do you have for RR spring?
Our pullbar also runs at an angle to the left. Is this normal. We read that it should be centered to the rear end. Or should it just run parallel when bolted to the car?
Thanks for the help.

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted August 23, 2005 01:05 AM  
the pullbar needs to be mounted parallel in the car. But it can be offset to one side of the diff. Moving it to the left of centerline helps load the LR more than the RR. I would think like Krom, the RR spring is too weak and the LR is probably too strong of a spring.

You said the parts you were buying was for a metric......is it a Chevelle or a Metric stub??? I'm confused on that. If its Metric does it have Nova lowers?

Kromulous
Dirt Forum Champ
Total posts: 796
posted August 23, 2005 06:55 AM  
We usually run a 300lb RR spring, but i run a really low rear roll center. J-bar is just about flat, got about 4" rake max. 275lb and down to 250lb every once in awhile.

Some questions on your clip. Are the frame rails on the sides that extend to the back smooth or do the have a indented middle section? Are the springs in at an angle, with the tops being leaned in, towards the center?

Sounds like a metric, but knowing if it has Nove lowers will make a large difference.

Sounds like to me the car is rolling over to much on the RF, and its not shifting much of the weight back to the LR. A softer LR, and Stiffer RR spring, along with about a 750lb RF spring should turns things around real quick.

andykmod
Dirt Freak

Total posts: 351
posted August 23, 2005 12:49 PM  
What year is it Harv? And it should be a metric stub w/nova lowers. Seeing you are running a half mile bank you should be running more spring then that in the front and your rears are a little off the rr is too soft for sure. Also you are running alot of bite. As for your pull bar it will run at a angle to the left mine does and the 5th shock will be centered. I never liked the j-bar to much on mine but where is it mounted on the pinion plate? Also what wheel offset are you running and is your rear end where it needs to be these are very important with my car.

Harv
Dirt Roller

Total posts: 8
posted August 23, 2005 02:38 PM  
Andy,
The year is 2003.
The pinion bracket has 4 holes and we are second from the top with about 15 degree angle. What do you run in place of J-Bar? The offsets are 1" on left and 3" on right. We go to a 4" on RR if when track is slick.
The springs do angle in at the top if that help to determine what type of metric frame.
We have the rear end 15 3/4 of an inch from the inside of frame rail to the center of the rear end.

andykmod
Dirt Freak

Total posts: 351
posted August 23, 2005 02:54 PM  
That is the same year i have. It is a metric frame with nova lowers. First off is the underslung notched under the lr axle tube. I run a 21 inch bar behind mounted to the right of the fill plug on the housing. Why do you have the 3 in on the rf? It should be a 1 in that would help tighten ya up. I will pm you spring rates and stuff my car is usually tight under throttle (from center out) With the amount of bite you have and that rr spring i would think that the car would not turn. How long have you been running this car.

Harv
Dirt Roller

Total posts: 8
posted August 23, 2005 03:13 PM  
The LR is notched. We were told from Kosiski's when we bought the car to run 1" on left and 3" on right. This is our first year in a modified. We use to run late model and limited late model. I will be looking for your PM. Thanks for the help.

andykmod
Dirt Freak

Total posts: 351
posted August 23, 2005 06:28 PM  
Harv did you get my PM?

Harv
Dirt Roller

Total posts: 8
posted August 23, 2005 09:19 PM  
Andy,
I received your PM and have responded.

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