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Z134 exhaust valve rotators

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William Fissell

06-07-2018 10:08:24

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Hi, All,

134 rebuild came to a halt when I noticed that the valves supplied as part of the rebuild kit do not have holes in the end of the valve stem to admit the pin on the rotator cap.

I guess I will tear it down and check the valve in a lathe and drill 'em, but does anyone on thr forum have this experience as well?



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06-08-2018 11:06:40

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 Re: Z134 exhaust valve rotators in reply to William Fissell, 06-07-2018 10:08:24  
I would not modify the valves, too much at stake to be trying something like that!

Send them back, get the right ones.

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06-07-2018 19:02:38

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 Re: Z134 exhaust valve rotators in reply to William Fissell, 06-07-2018 10:08:24  
Continental exhaust valves with pins NEVER had rotator caps, just plain spring retainers like the intake valves. Exhaust valves that use rotators use grooves for the split retainer lock halves..

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06-07-2018 17:30:09

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 Re: Z134 exhaust valve rotators in reply to William Fissell, 06-07-2018 10:08:24  
What did it have before rebuild? Did you replace old valves?

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William Fissell

06-21-2018 01:43:57

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 Re: Z134 exhaust valve rotators in reply to miner09, 06-07-2018 17:30:09  
yes I replaced old valves. They had the pin type valve rotators.

one of the comments on the thread makes a comment about pin retainers- I m talking about the exhaust valves which do yes have a groove for the tapered retainers. The old valves had a small ole in the center of top of the stem to accept a rotator cap which was a small disc with a pin in the center to locate the cap on the top of the valve stem.

I reached out to this site where I bought the rebuild kit but no reply.

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William Fissell

06-21-2018 01:47:22

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 Re: Z134 exhaust valve rotators in reply to William Fissell, 06-21-2018 01:43:57  
Apologies- what I called rotators are I think properly called lash caps.

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