Porsche valve adjusters

The original rocker screws are the way to go and less expensive. Let me explain. The original screws that have been used for 75 years are worn flat. This then makes it hard to adjust properly. They need to be re-ground to meet factory specs. Once this is done adjusting the valves are a snap. Dan Ditullio does this service and I have been happy with the results. He has a post here about this service.

I believe that if you install Century Spring Co. spring #DD-79

(213-749-1466) on the adjusting screw to hold the foot up when
they are installed, the Porsche screws will work fine. I have them
in my engine.

I too have talked to Gail Shaw and he said that he has had trouble with them. The problem is that if the engine back fires it can flip the little foot so that valves won't close. Then your engine is running on too few cylinders. You will have to pull the intake manifold to fix it. He doesn't recommend them for that very reason, I wouldn't use them.

The elephant feet do not require redrilling of the rocker arm. The metric thread of the elephant foot adjuster is so close to the original's SAE thread that all it needs is the metric tap run thru it. Search for "Porsche valve adjusters" or similar on your ACD Archive DVD.

Those VW ball adjusters look interesting. Trouble is, no-one but the late Lee Richardson is ready to test them on his engine!

when you do the elephant foot mod, I assume you drill and tap the Cord rockers to match the new adjusters.

There is an adjuster with an swivel ball that works like the elephant foot but without the pad.

www.b2600turbo.com/swivel%20foot.htm

In talking with Gail Shaw last night, he said that he doesn't like them because if the car backfires the foot can get cocked keeping the valve open, then you have to pull the manifold to fix it. I'll pass.

Adjuster is #901.105.370.02

Lock nut #999.034.005.00

The Porche elephant feet were installed in my engine some 10 years ago, when this modification was in fashion. I hear now that it's not the cat's meow anymore though? Could you give is the part number for "just in case".
Thanks, RF.

I found the part number for the elephant foot valve adjusters and was going to order some but wondered how they are installed? I'm pretty sure the threads don't match up since the Porsche would be metric. Do the rocker arm holes have room to rethread or does it require the installation of inserts?

I'm assuming the benefit to using them is the rocker action of the foot keeping itself perpendicular to the valve stem?

Thanks