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Author Topic:   Please Help NO FORWARD BITE
locknload
Dirt Roller

Total posts: 13
posted July 16, 2005 09:16 PM  
J-car on IMCA tires, 4-link l/r locked with spring in front, r/r z-link spring on rear end housing. springs are, LF 900, RF 750 LR 275, RR 200. Pan hard bar mounted low with 2" lower on rear end. Biscuit bar at 15 degrees. The car works perfect even if the track is a little tacky, but as soon as the track goes dry slick we get very little LR lift and no forward bite. The goofy part is the car still handles perfect, goes in great, turns in the middle perfect then as he hits the loud pedal it just spins. Our driver has been racing many years, from wissota mods to wissota latemodels and the last 3 years IMCA mods so Im relatively sure he knows how to work the throttle. My question is, when we lock the LR spring (we have the capability of locking it to the housing or locking it to the bc)should we have mounted the bracket on the rear end to lock the spring in the lifted position or at normal ride height. The LR bar angles are 23 degrees upper, 7 degrees lower. The z-link is swing arm in front and long arm to the rear. Our track is high banked 3/8 mile. Thanks.

CUSTOMPERFORMANCE
Dirt Forum Champ
Total posts: 1172
posted July 16, 2005 11:24 PM  
Junk the biscuit bar and get a progressive spring pullbar around a 500-1000 lb spring. Rear springs around 250 straight across the back and get the fronts closer with less split like a 850 lf and 960 rf. What are your scale numbers?

locknload
Dirt Roller

Total posts: 13
posted July 16, 2005 11:30 PM  
55% cross, 60% rear,53%left side and about 65 lbs of lr bite.

[This message has been edited by locknload (edited July 17, 2005).]

locknload
Dirt Roller

Total posts: 13
posted July 16, 2005 11:37 PM  
unless we run lighter rf spring, we cant get it to roll to the rf, if it does not roll- no LR lift at all. But when it does roll to the right it does hook up but very well but inconsistent. we have tried differnt rear set-ups but they all end up the same after about 3 to 5 laps, we go backwards......

CUSTOMPERFORMANCE
Dirt Forum Champ
Total posts: 1172
posted July 17, 2005 11:24 AM  
Send me all your info in email. web01_99@yahoo.com

locknload
Dirt Roller

Total posts: 13
posted July 22, 2005 12:02 PM  
CUSTOMPERFORMANCE have you been getting my e-mails?

spark2390
Dirt Roller

Total posts: 5
posted July 22, 2005 12:08 PM  
IF I WAS YOU I WOULD TRY TO TIGHTEN YOUR CAR UP THAT WAY IF YOU HAVE A BIGGER
MOTOR IT WILL PULL YOU AROUND THE CORNER

[This message has been edited by spark2390 (edited July 22, 2005).]

CUSTOMPERFORMANCE
Dirt Forum Champ
Total posts: 1172
posted July 22, 2005 08:22 PM  
yes

CUSTOMPERFORMANCE
Dirt Forum Champ
Total posts: 1172
posted July 22, 2005 08:25 PM  
i would run 850 lf and 950 rf springs 250 across the back. get a 600-1000 lb spring pullbar use a rear mounted panhard bar nd get your cross around 51-52% rest loked pretty good. also i would start with 3" offset wheels all around.

locknload
Dirt Roller

Total posts: 13
posted July 22, 2005 11:04 PM  
Moved the pullbar to the left, reset pinion angle and went to a double biscuit,3" offsets all around-Had so much forward bite I got some for sale!!! worked awesome, a little tight in the apex but should be easy to loosen... Thanks for all the input!

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