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Author Subject: Boost Toe In?
davedgti6

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Location: whiston, prescot

Registered: 28 May 2006

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Post #1
Evening peeps Smile , Finally got my 6 on the road yesterday, last job was to sort my tracking out as I have fitted a vts quick rack, as per some threads on here I have set it to 0 degrees I.e. parallel, when doing the tracking I checked how straight my rear beam was and it was spot on as it should be as it was set up by Skip Browns, both rear wheels are toeing in by 2mm over the width of a 15 inch wheel,

Now the conversion is awesome, so much s**tting your pants power it's untrue, however I am getting a fair bit of torque steer on wide open throttle, I have a Quaife lSD fitted and roller bearing wishbones and solid mounts at the back,

Having done a bit of research am I better running a little bit of Toe in on the front? as pug intended? as I believe my front wheels are toeing out on hard acceleration?

So any advice welcome and what toe setting are the other High Boost boys running?,

Cheers, Dave... Smile

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Posted 8th Nov 2010 at 22:26
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #2
as you've removed a lot of the movement by using the solid bearings on the wishbones you wont get as much movement in the toe setting under power.

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Posted 8th Nov 2010 at 22:37
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davedgti6

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Post #3
welshpug! wrote:
as you've removed a lot of the movement by using the solid bearings on the wishbones you wont get as much movement in the toe setting under power.


Wont the balljoints on the end of the tre's move a bit though?

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Posted 8th Nov 2010 at 22:42
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adam b

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Post #4
Subframe flex is going to cause more I'd have thought.

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Posted 8th Nov 2010 at 23:44
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davedgti6

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Post #5
adam b wrote:
Subframe flex is going to cause more I'd have thought.

I also have one of phils lower braces fitted as well, so that should eliminate some of the flex, gonna check a few more things and maybe try a little toe in, dont think that the high boost cars are too bad for torque steer tbh, think my car just needs tweeking,

What I really need to know is what toe the other high boost cars are running tbh,

Thanks for the replys so far though Thumbs up

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Posted 8th Nov 2010 at 23:50
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

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Post #6
how low is it running?

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Posted 9th Nov 2010 at 00:05
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davedgti6

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Post #7
welshpug! wrote:
how low is it running?

just -30mm ish on eibachs rear lowered 20-25mm (recently refurbed)

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Posted 9th Nov 2010 at 00:09
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phillipm

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Post #8
It might help keep it in a straight line but it's the offset of the wheels that would want altering to actually reduce the torque steer.

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Posted 9th Nov 2010 at 00:15
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davedgti6

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Post #9
phillipm wrote:
It might help keep it in a straight line but it's the offset of the wheels that would want altering to actually reduce the torque steer.

Hmm interesting, my wheels are et23 with a 10mm spacer which means I am running et13, would you recommend lowering the offset to say et19 closer to what it was originally, also my wheels are 7 inch, dunno if the wider wheel makes a difference though?

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Posted 9th Nov 2010 at 00:37
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phillipm

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Post #10
If you have room to it'd help, probably at the expense of a little steering feedback though Yes

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Posted 9th Nov 2010 at 00:42
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welshpug!

Capt Pedantic

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Post #11
depends on the wheel and tyre, but I've had an ET28 x 6.5" rim bolted up without a spacer.


unless you mean the other way phill LOL

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Posted 9th Nov 2010 at 00:45
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davedgti6

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Post #12
Just had a thought , I have a peugeot sport gearbox mount (hard), baker bm lower mount, but I have an O.E. top engine mount although that is well chocked by welded in steel, if the engine was moving more one side than the other, these forces could induce excessive torque steer maybe?

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Posted 9th Nov 2010 at 00:49
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davedgti6

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Post #13
welshpug! wrote:
depends on the wheel and tyre, but I've had an ET28 x 6.5" rim bolted up without a spacer.


unless you mean the other way phill LOL

The et23 wheels can be used without a spacer on mine without any rubbing problems, I just spaced them out to get closer to the correct offset

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Posted 9th Nov 2010 at 00:51
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adam b

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Post #14
Best just reduce the power mate. Its the only way to cure it... Whistle

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Posted 9th Nov 2010 at 01:18
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davedgti6

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Post #15
adam b wrote:
Best just reduce the power mate. Its the only way to cure it... Whistle

I have thought that too LOL might be me just gotta get used to it? on my low boost i could use wot without too much steer or wheelspin but suppose I got a lot more power now LOL

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Posted 9th Nov 2010 at 01:31
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birk

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Post #16
You should try driving my car now, with the 0 offset 8" wide wheels on the front and 410bhp its just stupid, have to hold on for dear life LOL

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Posted 9th Nov 2010 at 01:36
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phillipm

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Post #17
'S just your driving Dan.

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Posted 9th Nov 2010 at 01:43
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birk

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Post #18
phillipm wrote:
'S just your driving Dan.


Pffft Roll eyes

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Solid rear beam mounts £130
07889376885
Dan
Posted 9th Nov 2010 at 02:05
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davedgti6

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Post #19
birk wrote:
You should try driving my car now, with the 0 offset 8" wide wheels on the front and 410bhp its just stupid, have to hold on for dear life LOL

Is the Fecker trying to take you across other lanes though? LOL

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Posted 9th Nov 2010 at 02:09
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phillipm

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Post #20
LOL

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- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
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Posted 9th Nov 2010 at 02:09
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birk

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Post #21
davedgti6 wrote:
birk wrote:
You should try driving my car now, with the 0 offset 8" wide wheels on the front and 410bhp its just stupid, have to hold on for dear life LOL

Is the Fecker trying to take you across other lanes though? LOL


It has done many a' times, shit my cen' the the 1st time it did it, since ive always had white knuckles when driving it hard LOL

________________________________________

Dimma + Gt35 turbo = Ninja
Solid rear beam mounts £130
07889376885
Dan
Posted 9th Nov 2010 at 02:39
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phillipm

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Post #22
Hmm

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Posted 9th Nov 2010 at 04:57
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davedgti6

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Post #23
Just thought I'd post up how I got on with this, firstly I have left the tracking parallel for now -might go with 1 degree in but I will see how I get on for now as it feels ok at the mo and I like the turn in (especially with my quick rack),I set my tracking using the string line method -will post pics on my project thread when I get a chance -piece of p*ss to do tbh,

I've removed my 10mm spacers front and back but had to put some 5mm spacers on the back to prevent rubbing. So running Et23 at the front and Et18 at the back,

And Result!!!Smile torque steer still there marginally but loads better and completely manageable, similar to my low boost set up really and that never bothered me,

So all this offset business, kingpin inclination thingy and scrubbers radius (which I thought was a couple of streets in town where the pro's hang out LOL ) really does work,

Thanks for everyone's replys, gonna enjoy it more now Smile

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Posted 12th Nov 2010 at 02:12
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phillipm

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Location: Rotherham

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Post #24
Thumbs up

________________________________________

- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
Email me!
Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces.
Posted 12th Nov 2010 at 03:03
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