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914World.com _ 914World Garage _ cure worn valve stem

Posted by: michelko Mar 28 2005, 03:24 AM

Hi all,
i found this on two valves on set of spare heads. The valve stem is slightly worn out as shown on pic. Is it possible to cure this in a cheap way using lash caps ore the 911 swivel feet? The heads itself look just fine. Don´t want to throw much money to get them complete rebuilt.

Thanks for your advice.

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Posted by: michelko Mar 28 2005, 03:26 AM

nother view.

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Posted by: MecGen Mar 28 2005, 06:41 AM

Hi
I guess you can try a valve cap. They sell all over the VW sites, And yes you can go with a 911 swivle foot
But when mine did this it got worse quick, Caps are old school, don't even know if they still use them. Mark will give you the scoop if need be.
Your problem is with the valve loosing its hardening spec, and pounding out, left untreated, can get pricey.
Regards
Joe

Posted by: Paul Illick Mar 28 2005, 06:58 AM

Lash caps are still used on VW's, mainly by drag racers using lots of spring pressure on stainless steel valves. It doesn't look like the top of your valve has mushroomed, so you should still be able to get the caps on. Don't wait much longer though, once they start to go it doesn't take long. Joe's right, get them at most good shops doing old aircooled VW's (like BAS/Ahnendorp at +492874-4047), or if they can't help in Germany then Gene Berg Enterprises in Southern California has them for sure. And new adjuster screws, of course, swivel or not.

Posted by: michelko Apr 2 2005, 09:51 AM

ordered a set of lash caps and new adjuster screws.
Hope this helps a little.

Posted by: sean_v8_914 Apr 2 2005, 10:13 AM

dont forget teh rocker shims. you will need to shim up teh rocker assembly to compensate for teh added thickness of the lash cap. swivel feet also raise the assembly up a tad

Posted by: michelko Apr 2 2005, 10:19 AM

QUOTE (sean_v8_914 @ Apr 2 2005, 08:13 AM)
dont forget teh rocker shims. you will need to shim up teh rocker assembly to compensate for teh added thickness of the lash cap. swivel feet also raise the assembly up a tad

How much for the shims? As much as the caps are thick?