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> 2056 Valvetrain question
worn
post Sep 26 2013, 10:56 AM
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QUOTE(stugray @ Sep 26 2013, 08:19 AM) *

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If the adjusters are as you describe, the pedestals are too high, or the pushrods too short or the cam and tappet length is too short.


Dont you mean: pedestals to low, pushrods too long, or tappet length too long?

Well, I couldn't be sure. I took the description to mean that the screws were driven into the rocker until the slot was buried.

But my first thought about the problem is as you describe, with the adjuster screwed out as far as possible - you can run out of swivel room with the elephant's feet that way. In that case I *might* shim the pedestals. I did with my 2056 but it was to obtain the valve pushrod geometry that I wanted - I cut my own push rods after I shimmed the pedestals and used the adjustable pushrod.
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stugray
post Sep 26 2013, 11:06 AM
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Well, I couldn't be sure. I took the description to mean that the screws were driven into the rocker until the slot was buried.


Ahh... I think you are right. I was originally picturing that he could not get the feet far enough IN to get any valve lash.
Now I think you are right.
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flipb
post Sep 26 2013, 11:21 AM
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Any confusion is my fault - I was furiously scribbling notes while on the phone with my mechanic. He had in fact suggested 1.7 Rockers and Swivel Feet adjusters from a 911. That got lost in my confused transcription.

We're pretty much all set now. Thanks to all who helped me figure out what I needed.

Again, this guy's a very experienced builder but with flat sixes, not T4s.
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r_towle
post Sep 26 2013, 11:31 AM
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Is your mechanic local to you?
How close to DC metro is your engine builder?

Rich
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flipb
post Sep 26 2013, 11:41 AM
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QUOTE(r_towle @ Sep 26 2013, 01:31 PM) *

Is your mechanic local to you?
How close to DC metro is your engine builder?

Rich


He's a few miles from my house. About 12-15 miles from DC.
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worn
post Sep 27 2013, 11:02 AM
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QUOTE(stugray @ Sep 26 2013, 09:06 AM) *

QUOTE
Well, I couldn't be sure. I took the description to mean that the screws were driven into the rocker until the slot was buried.


Ahh... I think you are right. I was originally picturing that he could not get the feet far enough IN to get any valve lash.
Now I think you are right.


To finish this off. I drove my 2056 914 to work today again, and it runs like a top. It wouldn't have but for the advice of people who responded here and others on the board. Thanks!!
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Jake Raby
post Sep 28 2013, 03:34 PM
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The valve train aspect of the -4 is the biggest difference that people will experience when they are typically working with -6 engines.

This engine can't be treated like something else.
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