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914World.com _ 914World Garage _ shock snubber height?
Posted by: rascobo Jun 19 2008, 07:07 PM
Does anyone know the length of the strut/shock bump stops?
The last time I had new Sh&St's installed it appears they left them off, and I ended up with a broken strut insert.
Bought new set of Bilstiens, arrived without needed snubbers. Cust. service tells me if I'll get them the length they'll send me something for the rears. and said that the fronts were built into the insert,
Can anyone confirm that as I'm a little leery, being they didn't initially know what bump stops were. Sorry for the long post.
Scott 
Posted by: SLITS Jun 19 2008, 07:20 PM
2 3/4" or 70 mm
Posted by: rascobo Jun 19 2008, 08:09 PM
2 3/4" or 70 mm
Thanks SLITS. (BTW I won't ask)
Still hoping someones got info on the front bump stop issue.
Posted by: SLITS Jun 20 2008, 12:02 AM
That measurement was off a stock snubber. A good percentageof the cars I have fixed, taken apart, junked or otherwise have had these on both inserts, along with a plastic white washer with slots in it.
The washer apparently releases air as the snubber compresses.
Reported to save a shock on a severe bump.
In racing production cars, we would cut the down in length for two purposes. One we lowered the car and had to adjust contact point. Two it would reduce a tendency of suspension deflection oscillation with a full bouncy rubber.
Anyway, that's how I remember it. 
Posted by: rascobo Jun 21 2008, 06:23 PM
That measurement was off a stock snubber. A good percentageof the cars I have fixed, taken apart, junked or otherwise have had these on both inserts, along with a plastic white washer with slots in it.
The washer apparently releases air as the snubber compresses.
Reported to save a shock on a severe bump.
In racing production cars, we would cut the down in length for two purposes. One we lowered the car and had to adjust contact point. Two it would reduce a tendency of suspension deflection oscillation with a full bouncy rubber.
Anyway, that's how I remember it.
Resolved the 'front supplemental spring' issue; Bilstien among some other manufactures DO incorporate them internally to their struts, but NOT their shocks. Until I can find some modern foam ones I think I'll cut down some NOS 911 hard rubber ones to 70mm to protect the rears.
Posted by: SLITS Jun 21 2008, 06:35 PM
The stockers should work really well. You can see they are 3 bands** of thick and 3 or so thin rubber areas. The thin allows the bellows to compress at a variable rate. Once the thick areas are pushed together, it forms a very strong cylinder.
Ok, so I'm cheap.
** or more
Posted by: 914Sixer Jun 21 2008, 09:06 PM
Have you priced these lately? They are in the $70 each range from Porsche. I had a set of new ones in the attic over the garage and they crumbled to pieces in less than a year. What another $150 bucks? There must be something else out there that can be used! 924,944 bump stops???
Posted by: Borderline Jun 22 2008, 05:06 PM
Koni sells bump rubbers for a little less: http://performanceshock.com/index.php?main_page=index&cPath=34
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