Re: Shimming Rockers
[Re: JohnRR]
#695732
05/12/10 12:00 PM
05/12/10 12:00 PM
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Joined: Dec 2004
Posts: 1,061 New Mexico
dmerc
super stock
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super stock
Joined: Dec 2004
Posts: 1,061
New Mexico
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Quote:
You are lucky that those POS rockers didn't come apart .
Get the comp pro magnums
I've got a brand new set of those and I just can't bring myself to throw them away. But I should.
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Re: Shimming Rockers
[Re: POS Dakota]
#695734
05/12/10 12:10 PM
05/12/10 12:10 PM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,020
U.S.S.A.
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Quote:
Anytime you have a custom engine with milling on heads and block etc, you will have to shim the rockers to achieve proper geometry.
WRONG, cutting the heads and the block does NOTHING to valve to rocker GEOMETRY , you have to cut the ROCKER STANDS to affect that.
Shimming rocker shafts because of aggressive head and block milling is the WRONG way to correct for the problem created which is PUSHRODS that are now TOO LONG ...
The shimming the OP is talking about is shimming BETWEEN the rockers to center the rocker tips on the valve stems .
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Re: Shimming Rockers
[Re: 493_DART]
#695748
05/24/10 07:31 AM
05/24/10 07:31 AM
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Joined: Feb 2003
Posts: 12,675 Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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If the question i sdo any come without shims, the answer is some come with springs but shims are the correct way to center the rocker. The better sets of rockers still use shims. It's part of the engine building process on a performance engine.
I'll also ad to JohnRRs answer on shimming the rocker shafts to correct the geometry that the valve job is the only thing on a saddle type shaft rocker that affects geometry. Well, sometimes different rocker ratios and manufacturers might a little too, but it's basically the valve job.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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