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Author Topic:   ? for all gm metric racers
dirtdodge
Dirt Roller

Total posts: 18
posted May 16, 2004 11:38 AM  
this goes out to gm metric racers. i know that most of you struggle with forward bite when you race against camero leaf cars. or atleast i think so.any way this question is what do you think about floating the lower trailing arm mount to allow more rearend rotation.also what are most of you doing to increase forward bite. these cars have so much potential they just seem to come up short on forward bite. any comments appreciated

racer17j
Dirt Forum Champ
Total posts: 5390
posted May 17, 2004 04:59 AM  
ok here it is I use metric bolts in the lower controll arms with lock nuts I do not tighten them all the way this allowes he rear to rotate slightly if they were to be tight then they would have to rotate the bushing and bind up not giving you a smoth rotation most didn't believe me until they tried it

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loose is fast & on the edge of out of control

dirtdodge
Dirt Roller

Total posts: 18
posted May 17, 2004 09:07 PM  
please keep these comments coming if everyone works together we may find a solution

Busch
Dirt Full Roller

Total posts: 46
posted May 18, 2004 06:51 PM  
Try drilling 4 to 6 holes around the center about 3/16 or so {thats if you are using stock upper bushings} This will allow for a little "cushion" if you will and should help with forward bite.

dirtdodge
Dirt Roller

Total posts: 18
posted May 26, 2004 10:21 PM  
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thebomb
Dirt Maniac

Total posts: 149
posted May 26, 2004 10:52 PM  
has anyone tried unhooking one of the upper mounts..... a friend of mine claimed he did it years ago and won a lot, just told teck that the bolts kept loosening up...... just a question, never ran a metric (nobody's perfect)

sixwillwin
Dirt Freak

Total posts: 493
posted May 26, 2004 11:42 PM  
sure you can unhook one of the tops!!, but you will need a panhard bar then to control the lateral movement or you won't make it out of the shop before the driveshaft falls out.

gould
Dirt Forum Champ
Total posts: 730
posted May 27, 2004 07:16 PM  
81 grand prix. what i did was cut the upper mounts on the rearend. i put more downward angle (to the front),and welded them back up. this changed the instant center and gave me more forward bite! you can put more angle on the left then the right to tighten car up also. put more in the right to loosen.

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www.geocities.com/gouldracing11

gould
Dirt Forum Champ
Total posts: 730
posted May 27, 2004 07:23 PM  
for got to mention 175 rr and 225 lf springs

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www.geocities.com/gouldracing11

dirtdodge
Dirt Roller

Total posts: 18
posted June 01, 2004 11:43 AM  
left side weight seems to be the only thing that improves forward bite for us

badfastjr
Dirt Maniac

Total posts: 193
posted June 02, 2004 09:09 PM  
if you get a torch and a punch and knock out the steel bushings, and leave just the rubbers in the front of the upper links it makes them work like a biscuit type pull bar. This should help with forward bite a lot.

[This message has been edited by badfastjr (edited June 02, 2004).]

dirtdodge
Dirt Roller

Total posts: 18
posted June 27, 2004 02:52 PM  
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