Series One and parabolic springs
Series One and parabolic springs
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100SRV

Original Poster:

2,311 posts

263 months

Monday 30th July 2007
quotequote all
Hello,
I fitted a set of parabolic springs to my Dad's 88" Series One a while back and have only just got around to fitting the "correct" Pro-comp dampers. I tried to fit the front ones and found that the free length is much greater than the stock originals so the damper bottoms out before the axle hits the bump stop. I didn't try the rear ones as they were the wrong type (to suit 109" / RR rear). I did a bit of measuring and found:

Stock front: 16 1/4" free, 10 1/2" compressed
replacement: 21 1/4" free, 13 1/2" compressed Pro Comp part number 321546

Stock rear: 20" free, 11 3/4" compressed

So I can't really use the "front" replacements on the rear either.

I think I need to use 31750x front and 32050x rear - have any other PH'ers run into this problem?

I could start making brackets to move the chassis mounts but this is supposed to be a "bolt on" modification!

100SRV

P100

636 posts

227 months

Monday 30th July 2007
quotequote all
Hi. sounds like you have been supplied the incorrect shocks for both front and rear!

I did this very conversion some years ago and had pretty much the same problem, I remember the supplier at the time was difficult to deal with and could not understand that his book was wrong!

Eventually I found another supplier, (Gabriel, I think), who supplied me with the correct shocks and all was well.

Hope this helps

Cheers Roy

100SRV

Original Poster:

2,311 posts

263 months

Thursday 2nd August 2007
quotequote all
Hi,
thanks for your input - I'll take the parts back this weekend and see if they can get the alternatives I found...

100SRV