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Issues With Front Shock Absorbers (bilstein)

BAMR33
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BAMR33 Mentor

BAMR33

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Posted

Hi guys,

I've currently got the sk suspension kit installed in my r33 gts-t and I'm having trouble with the front shocks not having enough travel, they bottom out on rough roads. The rear's do not do this even when the car is loaded with fuel.

I have cut the bump stops down to the point where they're nearly doing nothing and the height setting is only one circlip under sk's recommendation (which still isn't low at all).

Does anyone know if bilstein do a shock absorber with more travel and less height than the ones supplied in sk's kits? I'm really interested in finding a front pair if they're better suited as the current bilsteins really annoy me. I don't want my car excessively low, just the guard down to the top of the tyre.

Is there a size listing or catalog on bilstein shocks?

Brett.

PS I would have liked to contact sk about this but his inbox is always full

simpletool Mentor

simpletool

Posted
Posted

I agree that the bump stops do come into play too much (mine is correct height). I think it's more that the basic geometry can't be any lower than that with those spring rates. If you want to be at the top of the tyre (prob 330mm from centre to guard) then you are lower than recommended and will need higher spring rates.

Something like 6kg/mm I guess will be required for top of tyre guard height.

If it wasn't hitting the bump stops the tyre would hit the inside of your guard - but I guess you have removed the plastic inside the guards?

BAMR33 Mentor

BAMR33

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Posted

The tyre doesn't touch the guard (no wear marks visible) but the shock absorbers completely bottoms out. If you have the front bar off you can fit your hand in behind in the strut assembly and feel there very little travel to the bump stop.

I guess a heavier rate spring would sought of solve the situation but the ride is already too stiff for me. Out of interest what be the spring rate of the whiteline items provided in the sk kit?

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