Bumpstops, the short story...

[632 Regal]

[632 Regal]

and they lived happily ever after.

[Dave M]

Nikolai Vodka, never seen the likes. Is it from Kentucky?

As a Vodka user, I may have to have you send me a bottle. I've had everything I can get my hands on in Canada.

Dave M

[genphreak]

Jeff are those stock rear bumpstops or are they a generic type?

I have been trying to work out the right theoretical length, ie height of the original bumpstop. Do you know what it was?

I say this as the most important thing to maintain is the bumpstop's compressed size as this is calculated to prevent suspension components reaching the full length of their travel and hitting things/each other/wrecking bushings etc.

S@#$!, it may even be different on a Bilstein shock if it's body was a different height... So I just went out the back to check- here is a pic (below). You can see that the Billie is a good 3mm shorter... its not huge, but it means it will travel 3mm further than the Boge- so the Billie bumpstop should be a whole 3mm longer than stock). What a ground breaking discovery... :| but at least stock Boge bumps are all that is needed; I doubt 3mm makes enough difference to worry anything.

My stock bumpstops had completely disintegrated (you can the shock in the pic was as old as the car when it came off- 17 years )... I'd love to know if anyone has got a real set of stock ones and can measure them up for us!

F@#$! Bilstein, why couldn't they get it right in the first place??? I tried to get a Billie bumpstop kit once, they (Aussie bilstein distributor) didn't know of one.


Jeff; re your pic, do you really think that glue will hold?

I like the idea of keeping both compression sections, but....

Under a hit of 1200kg at (who knows how many) metres per second the material will be squished to the max. I doubt the glue would deal with the amount of elasticity required to maintain a bond as the foam is compressed and flares out sideways.

If it separates the lower ring will drop down the shock piston and it may (but probably not) squash dirt into the piston seal as it gradually disintegrates from all the shoving up and down the shaft.

[genphreak]

Do you think jeff drank the majority of the bottle before or after he took glued 'em up? Nick

[genphreak]

Apologies everyone, I photographed the shock without the lower spring seat. If you place this 'hat' on the shock the body length of the shock to the bottom of the spring will work out the same as the stock shock.

All good. So stock bumpstops are perfect.

[632 Regal]

those are the front stops, originally they were 3.5 inches. I cut an inch out of the central section, this leaves a little over an inch of cushion plus the air cushon. The Bilsteins had 1 inch of cushon which was perfect as to not bottom out unless you hit a crater, I think this height will be good. I will pop the sachs in next weekend and give a final oppinion after about a week or so.

The glue is flexible, not as strong as I liked but should withstand the compression and events associated.

[632 Regal]

Dave it is a Kentucky made vodka, in researching it is about the cleanest you can get next to absolute which spends millions advertising its 4x cost product. I persanally, side by side taste sample cannot tell a bit of difference.

Nikolai Vodka, never seen the likes. Is it from Kentucky?

As a Vodka user, I may have to have you send me a bottle. I've had everything I can get my hands on in Canada.

Dave M

[Anthony (M5 in Calgary)]

and they lived happily ever after.

Dude!



(2.9" M5 stoppers) Stupid expensive - my next R&R will use the cut-down $12 parts...

[632 Regal]

yea, 12 bux vs 45 each, quite a difference and with as often as i tear this front **** apart i will take the chance of the glue spitting.

Do you have any clue what this is and if its needed? I have another week to order it up if needed.

http://www.bimmer.info/forum/showthr...d=1#post158903

#11, dont seem to be needed on my car but wondering. One day I'm gonna be done with this front end ****.

New rotors cleared up 90% of the thrust arm bushing shimmy but still have a tad. On inspection AGAIN I cant isolate anything.

Dude!

(2.9" M5 stoppers) Stupid expensive - my next R&R will use the cut-down $12 parts...