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Gtir Motorsport club » Tech room » Help and Advice »  Rear arb bush size ....

Rear arb bush size ....

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1 Rear arb bush size .... on 21st November 2016, 11:40 pm

nomad

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Can anyone tell me the correct size in mm for the rear anti roll bar bushes poly pro suggest 12mm 13mm 14mm and 16mm so does anyone know the standard size arb ?


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2 Re: Rear arb bush size .... on 22nd November 2016, 6:06 am

Mr B

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gtir technician
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i thought standard was 15mm

3 Re: Rear arb bush size .... on 22nd November 2016, 9:49 am

splmum

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Close Mr B, just micro'd my old one, 16mm

4 Re: Rear arb bush size .... on 22nd November 2016, 10:30 am

Mr B

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gtir technician
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Pretty sure bushes for oem bar are 15mm and bar around 15 or 15.25 .
I'll measure one later see what I got as if poly-pro not listing 15 and you 16 on standard then I likely wrong .probably worth nomad checking his as may not be standard .

5 Re: Rear arb bush size .... on 22nd November 2016, 6:14 pm

nomad

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I cant find my digital calipers to measure it scratch .... any joy on your one mr b .... i know the whiteline one is 20mm .... the front whiteline is 27mm ... not that helps me out lol ...


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6 Re: Rear arb bush size .... on 22nd November 2016, 7:11 pm

Mr B

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gtir technician
try use a 15mm and 16mm open end spanner, I not done it tonight but will tomorrow .

7 Re: Rear arb bush size .... on 22nd November 2016, 7:57 pm

nomad

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Yeah i painted it so probably a mm thicker .... im just intrested now why so many different sizes ... the 200sx ones are 15mm


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8 Re: Rear arb bush size .... on 22nd November 2016, 8:40 pm

nomad

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Even powerflex list variations on rear arb sizes although it doesnt state what sizes ..... so would you say if the arb is say 14mm would you drop the bush down 1 mm so its a tight fit ???


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9 Re: Rear arb bush size .... on 23rd November 2016, 6:24 am

Mr B

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gtir technician
Well measured one and it 15.18mm so 15mm . Powerflex use to list bush as 15mm for rear arb as far as I remember so that could be where 15mm came from .
You would choose bush size same as rollbar really, manufacturer would control exact bore size pending on material of bush etc((rubber likely want be tighter final fit than harder poly).
could be worth contacting you bush manufacturer for their input.

10 Re: Rear arb bush size .... on 23rd November 2016, 8:19 am

splmum

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Just measured mine again in daylight and on 4 points got an average less than 15.2mm so Mr B at 15.18mm good measurement.

11 Re: Rear arb bush size .... on 23rd November 2016, 9:38 am

nomad

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Il contact powerflex and find out what sizes they offer as poly pro dont do a 15mm .... still yet to measure mine .....


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12 Re: Rear arb bush size .... on 23rd November 2016, 10:17 am

Mr B

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I would contact polypro as pretty sure I seen a 15 in some of there listings.

Below powerflex and the bible S.D.S data 'chapter RA39 . Vol2' .

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