308 Distributor Spline O-rings Proper Size?

Rob
I just had the same problem but with the rear one. I bought a couple of o-rings from GT Parts and they looked closer to your original than any of the ones in the photo. So far so good as it seems to have stopped my leak. Bill mentioned it was also Nitrile. Looks like their internal part number was 8601102 95 cents each
As best I can measure O.D.14.34 mm Thickness about 1.72 mm

Cheers

 

...they are a strange size. I don't know what Superformance is thinking. They sent me that same o-ring. Way too big.

I found one in the "green" o-ring selection from Harbor Freight that was real close, but not perfect. http://www.harborfreight.com/205-piece-hnbr-o-ring-kit-67644.html

Patrick Ottis is setting up my distributors on his machine and said he would put some new o-rings on it when he returns them.

We'll see what they look like.

 

Good call on the setup

 

You want to get the original one. The ones you show don't look right. And good luck with the oil leak. My GT4 never stopped leaking.

 

PM me
I think I have a pair that came with my valve cover gaskets I got this summer. I will check when I get home. i cars don't use them so you can have them.

 

You wouldn't have any photos of your front and/or rear bank distributor splines? I too have an oil leak (somewhere) and would appreciate a starting point...

 

Rob, if you can measure the O ring I can check my stock of rings. I've got a stock of Ferrari O rings and would most likely have the one you need.

O ring sizing is based on the gland and type of connection. If I have some free time later tonight I'll go thru the Parker book and see what it comes up with too.

 

Steve,

It took me a few tries to get the distributor area leaks stopped on my car. The o rings are one spot that can leak, easy enough to replace if you get the right ones. Also, there is a large oil seal around the camshaft at the distributor end. Easy enough to replace as there is a carrier that can be removed which contains the oil seal. And there is a triangular shape gasket that is a prime suspect for leaking. It is the one the carrier seals against.

Attached are a couple photos for clarification.

Best of luck, Jeff

p.s. I am happy to report that the annoying drip of oil onto the exhaust system, complete with tendrils of smoke rising up from the engine lid louvers at stoplights, has now been resolved.
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based on this, I checked my stock. I have that size, it's also a parker size 2-013.

 

I put that silicone grease that came with the Energy Suspension bushings on mine. They were not leaking. I don't know if it makes a difference, but nothing seems to cut that grease.

 

Thanks Jeff...