Head milling for Cleanup only
#1
Have you had your heads milled slightly for cleanup?
What did you do about valvetrain clearances? Did you have to special order shorter push rods, or did you install shims under the rocker arm bolts?
What did you do about valvetrain clearances? Did you have to special order shorter push rods, or did you install shims under the rocker arm bolts?
#2
After milling the heads you'll need a pushrod length checker (less than $20), then you can order the correct length pushrods, Comp makes multiple sizes that work on the GENIII engines.
#3
Milling the heads just enough to clean them up should not affect your valve train geometry enough to need new pushrods. Unless it's taking a ton to clean them up. I milled a set of 243's with 100000 miles on them about 2 months ago and it only took .008 to get them back flat. Threw the motor back together with the stock pushrods and car runs perfect.
#4
Joined: Apr 2004
Posts: 16,820
Likes: 2
From: In a van DOWN BY THE RIVER
Milling the heads just enough to clean them up should not affect your valve train geometry enough to need new pushrods. Unless it's taking a ton to clean them up. I milled a set of 243's with 100000 miles on them about 2 months ago and it only took .008 to get them back flat. Threw the motor back together with the stock pushrods and car runs perfect.
#5
Well I suppose at a few thou there shouldn't be any major issues, but personally, I'd still check lifter preload, for the cheap price of a pr length checker and the little bit of time that it takes to check, why not? Just for reference, stock length pr is 7.38, and aftermarket pr's are offered in increments of .025 (ex: 7.4, 7.375, 7.425, etc.)
#7
Absolutely, the plunger in the hydraulic lifter will allow for some play with the valvetrain geometry...I can't remember the exact number, but there is a certain amount of allowable clearance that the hydraulic lifter will account for.
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#8
Joined: Apr 2004
Posts: 16,820
Likes: 2
From: In a van DOWN BY THE RIVER
#9
My question is do you play "on a boat" for all those honeys you got pictures of on the boat?
http://www.youtube.com/watch?v=k8F3UE9qFsg



