Is there any trick or tip to fitting the push rod tunnel seals in the cylinder head ? I have tried inserting the seal into the head first, but then I can't push the tube into the seal. I have tried putting the seal on the tube first, but then I can't get the assembled tube into the cylinder head. It all seems a bit too tight. All is well oiled but I still cannot assemble it.
Should I loosely fit the tubes in the cylinder head and use the head bolts to pull it down ? But that seems a bit drastic to me.
thanks for any help
Mike
Hopefully someone will turn…
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M50 pushrod tunnels
Thanks for your reply and attachment David. I do already have the manual. I will try again.
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I insert the top washer and…
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.
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I would repeat all of the…
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.
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M50 pushrod tunnels
Thanks Geoff
I will do as you suggest and hope for some success. Good tip about the VW seals. Thanks
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Mod 50 pushrod tubes
How long are late Model 50 push rod tubes? Because they are not much shorter than the ES2 items.
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M50 pushrod tunnels
Hi Neil
They are 6 1/4 inches (160 mm) But can I ask why the length is relevant ?
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I would not say that the…
I would not say that the late ES2 is 'much more common' than the equivalent Model 50, in fact quite the reverse.
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M50 pushrod tunnels
Hi Niall
Repaired cylinder head (Loose valve seat) and re bored. All back together now thanks. I bought different rubber seals and they went in OK. I think the others, although new, were too hard.
Cheers !
Mike
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M50 pushrod tunnels
Hi Neil
Sorry Neil, I sent my reply to Niall instead of you. I guess you will be able to see the reply anyway.
Mike
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Hopefully someone will turn up. Do you have the attached manual extract?