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Rear tyres won't loose traction 

 

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 Post subject: Rear tyres won't loose traction
Posted: Thu Oct 05, 2006 11:27 pm 
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Having trouble to get my car to do a burnout. The engine is EL XR6 with a RPD stg 3 cam, hi-flow intake, JMM headers hi-flow cat 2.5 sports exhaust,
rebuilt auto with 2000rpm stally and shift kit, 3.45 LSD, 205 15in tyres.
It should be able to spin heaps easy but just sits on the stall speed, no matter on road surface (dry, wet slight spin on dirt) its really sh**ting me.
Could it be the rear brakes locking on or something in the auto?
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Posted: Thu Oct 05, 2006 11:31 pm 
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firstlly you told us ya mods but not the tyres your using
some tyres give good traction some are just to easy to bag up ?

 

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Posted: Thu Oct 05, 2006 11:34 pm 
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tyres are dunlop sport 300e 205wide 15inch, was told by rep at tyre shop there pretty damn good, my dad's stock EL wagon has the same tyres and I get his car frying them
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Posted: Thu Oct 05, 2006 11:37 pm 
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ok when you hold the car up on the stall speed greater try stabbing the brakes off / on .

btw ill be in richmond some time during the day . if you see holler me down :P

 

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Posted: Thu Oct 05, 2006 11:42 pm 
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with those mods he should just put the foot down and get any tires smoking, im thinking somthing is stuffed with the auto.

 

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Posted: Thu Oct 05, 2006 11:47 pm 
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I have always suspected it was the auto but the rebuild should have fixed any problems because I got some goodies added whilst it was apart
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Posted: Fri Oct 06, 2006 12:28 am 
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does your car feel like its lacking power for any reason?

 

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Posted: Fri Oct 06, 2006 3:49 am 
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My eb is stock el xr6 motor 113kw at the wheels

stock auto with 182,000 on the clock..

I just have to hold brakes and give it some juice and it spins

With sava intensa 225/50/r16's I think somethings wrong!
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Posted: Fri Oct 06, 2006 4:13 am 
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Pump your tyes up to 40psi, shouldn't be a problem then. They will balloon and only have a small contact patch with the road.
Brett

 

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Posted: Fri Oct 06, 2006 7:27 am 
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You shouldn't have a problem, my car (EL Ghia with XR6 engine and LSD 3.45) STOCK (except 2.5 exhuast) can light them up off the line, no brakes with 205 tyres and at any speed under 70km/hr in the wet (at 36PSI)

But I cant guess what would be the problem :(

 

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Posted: Fri Oct 06, 2006 9:10 am 
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no matter what tyres with that power and 205's she should get em frying easy there has to be power being lost in the trans or stally unless you have the hand brake on there really isn't any other explenation,
could try putting hose clamps on the rear brake lines then try and see how that goes but is a dangerous affair so do it somewhere safe.
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Posted: Fri Oct 06, 2006 9:45 am 
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i have a similer problem, stock cam easy 225 burnout, after cam and it can do one even while turning.

 

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Posted: Fri Oct 06, 2006 10:16 am 
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maybe you just lost torque down low, between 1000- 3500rpm for your stally to be any use, considering the other mods.
cam, is it mid to high rpm?
JMM headers, is it mid to high rpm?
cat/exhaust, is it mid to high rpm?
trans rebuild, low line pressure for run in purposes mayby?

does it feel bogged down when the hits the pedal of the lights?

 

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Posted: Fri Oct 06, 2006 11:14 am 
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id say its just the power band of the cam, lost a bit of low down torque but hopefully gaining top end...

 

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Posted: Fri Oct 06, 2006 11:28 am 
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FAST-XR wrote:
id say its just the power band of the cam, lost a bit of low down torque but hopefully gaining top end...

Bingo.

 

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