B5 Spring Perch Mod (additional info required please)

4.2 V8 32v Naturally Aspirated - 414 bhp
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jaysrs4
5th Gear
Posts: 1116
Joined: Sat Jan 28, 2012 11:23 pm

B5 Spring Perch Mod (additional info required please)

Post by jaysrs4 » Mon Mar 17, 2014 5:00 pm

Hi guys, just after a bit of additional info on this if I may.

I've purchased a pair of B5 spring perches for a touch of additional lowering up front but have a query re the rubber the spring 'should' sit on.

For those that don't know of this mod, the B5 spring perch sits approximately 15mm lower that the B7.

On a B6 and B7 the plate has a rubber plate bonded to it that the spring sits on to protect the seat and spring.

After searching several sites and reading the write-ups no one mentions this piece of rubber. I'm just not sure about running it without it.

Here's a pic of the difference between the two:

B7
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B5
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On a B5 it comes separately if you order it - I would have thought that this was pretty important to protect both the spring and spring perch plus give some additional cushioning.

However adding it I guess will lift the spring higher a defeat the object of the modification - can anyone clarify or advise please?

Many thanks
James
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bhprs4
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Location: Hamilton, New Zealand

Re: B5 Spring Perch Mod (additional info required please)

Post by bhprs4 » Mon Mar 17, 2014 7:02 pm

I fitted some a few months ago.
I re-used the rubber isolators. You will have to trim the 2 rubber tabs at the back so it sits as flat as possible in the perch. You pretty much need to cut those tabs off.
Spring still locates fine and won’t move when spring is fitted.
For the first one it’s just a case of trimming, fitting to the perch then cut some more if required.

Dropped the front around 15mm, so levels the look of the car out.
09 C6 RS6 Black Saloon-stg 2 ECU and Gearbox map, secondary cat deletes, ITG filters, AP 390 brake discs.

jaysrs4
5th Gear
Posts: 1116
Joined: Sat Jan 28, 2012 11:23 pm

Re: B5 Spring Perch Mod (additional info required please)

Post by jaysrs4 » Mon Mar 17, 2014 8:20 pm

Thanks buddy much appreciated, at least I now know I don't need to go buy a new set.
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