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Posted by: mturner7 Jun 11 2022, 12:49 PM

Hi guys,

I'm rebuilding my Porsche 914 - 1.8L 1975 Big bore build Engine. I'll get right to it:

The Rocker Arm Rods are a funny size: 20mm ID or 0.786" ID. I can't find any that size online. All of them are the stock ones. Has anyone seen rocker arm rods this size?

This engine had something wrong with the Valves, because the CAM was warn through the coating and the engine was making a ticking noise.

Well, the Rocker Arms have those wavey spring shims, i want to get rid of them. This could have been the original issue, side to side play was out of spec very badly. Also the middle large shim is way too big (Internal Diameter). it is very loose and rattles around. It measure 21.20mm. I don't know who would put a 21.20mm shim on a 20.00mm rod!

I'm not sure, but I purchased a car that had a set of rockers in a box that they decided not to use, they are the same size, 20.00mm. I think these came from a 2.0L engine.

Does anyone out there know where these rockers, Arms, and Rods came from?

20.00mm or 0.786" rod size? I have two sets and I need shims for one of them.

Posted by: Mark Henry Jun 11 2022, 01:34 PM

Hydraulic cam spacers, get an aluminum spacer kit. I think aircooled.net sells them.
I make my own out of tube, but I have a lathe.

Posted by: 914Sixer Jun 11 2022, 02:16 PM

This guy has everything you need. Check out all of his services.


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Posted by: mturner7 Jun 11 2022, 04:36 PM

Thanks Man, I sent him an email on Samba. Waiting for his reply. He is my only hope, short of trying to make some my self.

Monte

Posted by: mturner7 Jun 11 2022, 04:38 PM

I looked at aircooled and they don't have the correct size, only stock and one bigger that is still not big enough. I need a 20mm ones...

thx man

Posted by: bkrantz Jun 11 2022, 09:33 PM

Another recommendation for Tabari.