2003 grt turn 2011 grt please help

[kevinspears]

its a 2003 grt grt square tube flex chasis with 2011 front clip. guys everyone on here knows more than me so tell me what u need to know an ill get the info my car is tight but when i loosen it up so itll turn it has no bite but when i put a little bite in it it pushes bad

[hobbyracerbn2]

what springs,shocks and percentages,stagger u have and where is your J-Bar on the pinion and how much rake u have?

[kevinspears]

ok 10in 400 on LF ...10in 350 on RF...pair of 12in 225s on rear. shocks are the afco silver series.running a 55 rear.... 54.5 cross...82lb bite....j bar is 2nd hole up on pinion and 3rd hole up on frame bracket an frame bracket is mounted 8 1/4 up from bottum...4 bars are all in standard holes on frame except left lower an its 3 holes up from standard.fith coil has a 300lb spring preloaded 1/4 in. rf lower controll arm is the longer 19in. my rear end is a 34in 34in axle tube but been running a 1in wheel spacer on it couse if i dont i cant turn the car.all my weight is mounted in front of rearend.22gal fuel cell only run bout 15 gal of fuel.running a spec motor dyno 580 not much hp. oh yeah 4 1/2 in of stagger an my 4 bars are 17in 15in on left an 17 1/4 an 15 1/4 on right.

[gadirtracer]

ok
10in 400 on LF
10in 350 on RF
pair of 12in 225s on rear.
Afco silver series shocks
55 rear
54.5 cross
82lb bite
j bar 2nd hole up on pinion and 3rd hole up on frame bracket, frame bracket is mounted 8 1/4 up from bottom
4 bars are all in standard holes on frame except left lower, its 3 holes up from standard
fifth coil 300lb spring preloaded 1/4"
RF lower control arm is the longer 19"
my rear end is a 34-34 axle. Running a 1" wheel spacer on it course if i don't i cant turn the car.
All my weight is mounted in front of rear-end.
15 gal of fuel.
running a spec motor dyno 580 not much hp. oh yeah
4 1/2" in of stagger
4 bars are 17" 15" on left an 17 1/4"-15 1/4" on right.

Not a GRT guru, but w/82lbs. of bite, I would think the cross weight would be down in the 48-49ish range. How much left %?

[kevinspears]

yes sorry cross is 49....... 54.5 is the left side

[dualdj1]

that cross sounds pretty low to me. Think you need to work on your weights first, but not sure where grt's are supposed to be at. also what gas pressures are you running? you can tweak handling with shocks, but this sounds more major. if you get it close to where it just pushes a bit on you going in, try adding some LF rebound.

[kevinspears]

ok i will try the rebound. iv just never had a car act like this on all my other cars when i got them too tight they had a ton of bite but just didnt want to turn this one doesnt want to turn but when u get it to turn it still doesnt have any bite its like somthing is wrong with the front end or somthing im runnin the grt black spindles if that makes any diff

[kevinspears]

my rf shocks coushion rubber was all the way doun. if my shock is bottoming out could that couse they car to be tight on entry and then loose on the gas?

[dualdj1]

yeah it very well could, bottoming springs/shocks can cause erratic handling. but going stiffer right front will loosen entry and tighten exit. Still think the problem is more in your weight... GRT says around 52% left 150lb bite.

Has it been like this the whole time, or did this problem just start happening?

I think you've got too much weight in the LF, which is giving you too much left and not enough cross. If this has been a constant prob, Try and get your weights close to GRT specs, then see how it is. If it still pushes, and is loose out, then try going stiffer on the RF.

[racin29]

what are your upper control arm lengths, mounted inside or outside of frame

[kevinspears]

ok i will try going back to standard settings. the left front upper is 11 1/4 mounted inside frame rails the right upper is 8 1/4 mounted outside frame

[racin29]

is the car maybe loose on entry and you are driving it in really straight, you have a 400 on the lf seems very light 500 is normal, also going to a longer upper control arm on the rf mounted to the inside will loosen the car up throu the corner, when you get on it is it rolling over to the right or is the whole rear coming

[kevinspears]

no its really tight entry off throttle an i have too stomp the brakes to turn it an when i get it turned its like it was never tight at al i can turn doun or up or wherever but i have no bite it makes for a really slow an embarrising night

[4bangerhotrod]

I've never messed with a GRT but the 10in spring on the RF seem's kinda short i know on all our cars if we dont run a 14in spring on the RF the spring is in coil bind before the shock comes close to bottoming out a 12in spring is in coil bind about 1/2-1/4in from from the shock bottoming out. and from reading your prob with the push this could be your prob the car is starting to roll onto the rf then your spring coil binds and stops the car from rolling on over. not sure about the grt you might not have enough shock travel to coil bind the 10in spring but i would check to make sure. well i just saw where you said your shock rubber was all the way down so this is probably not your problem but i would still check it.
thanks,
4bangerhotrod

[kevinspears]

yeah but im thinking the shock bottoming out is doing the same thing i orderd a droprd shock mount lower control arm from jody at j&j racing in la that gives me 1in more shock travel and im uping the spring rate to 375 maybe if car turns i wont be to tight on exit lol seems like every adjustment has a bad side effect

[4bangerhotrod]

im going to guess and say that if you add another 1in of travel to your shock your spring is definatly going to coil bind. and i really dont see how its not coil binding right now ive never had a car that a 10in spring would work on the RF. if this spring is coil binding it is going to cause the same effect as the shock bottoming out and maybe even worse cause there wont be a rubber dampner for it to lean against. if we had 10in springs on our cars they would coil bind about 1- 1 1/2in before the shock bottomed out
thanks,
4bangerhotrod

[racin29]

what 6th coil are you running and 5th coil shock does the car have a 90/10 on it

[racin29]

does it really have a 34 34 rearend or was that a type-o its supposed to be 34 35, also i believe 03 standard bar lengths are 17 1/2 and 15 1/2 (whatever the difference is side to side is the rr trail) if the right axle is 34 put a spacer over there and just leave it on and lengthen the rs bars both will help with the turning

[kevinspears]

4bangerhotrod i was thinking the same thing so the spring i orderd is a 375 12in so maybe it will cure the coil bind .........the 6th coil is from speedway i really dont know what it is ...what is it supposed to be??? and the fith arm shock is the standerd grt fithcoil shock i cant remember the valving and yes it is a 34 34 rear end and im running a 1 in wheel spacer after the first race couse i thought that was makin me tight

[racin29]

ok since your rs axle is 34" you should have the spacer on there all the time also i question if your rs birdcage is positioned correctly if that is an inch shorter i would call grt and get a side bell to birdcage measurement and double check might be off