Model 50, 1962 Push rod tunnel seals

Hopefully someone will turn up. Do you have the attached manual extract?

I insert the top washer and rubber seal into the head first with light smear of non hardening sealing compound (e.g. Curil T), to provide some lubrication. Rubber grease would probably be fine as well. I then slide in the tubes and bottom bevel washers similarly lubricated until they are essentially home. When the head is torqued down it all seems to sort itself out. BTW I can recommend VW air cooled pushrod rubbers (German apparently better than South American origin) for the bottom pushrod tube seals.

I would repeat all of the above except that I just give the tube and rubber a coating of silicon grease because it doesn't  cause the rubber to perish and split.

How long are late Model 50 push rod tubes? Because they are not much shorter than the ES2 items.

Hi Michael,

Yes. I didn't know if you were building this engine from scratch or just overhauling.

The more common late ES2 engine's tunnels are 61/2 inches, just 1/4" longer.

Not everybody knows that. But at least you have the correct items.

Good Luck.

I would not say that the late ES2 is 'much more common' than the equivalent Model 50, in fact quite the reverse.