lifter holes sharp edges
Thread Starter
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
lifter holes sharp edges
On my block i noticed that the lifter holes along the top edges have a sharp edge. My concern is that they would be very effective at scraping oil off of the lifter each time it descended into the hole. I'm installing roller lifters if it makes any difference.
Think I should chamfer the edges a little?
Think I should chamfer the edges a little?
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
What you feel with your finger is the flesh getting pressed into that hole...THEN you feel the sharp edge. The outside diameter of the lifter is ground 'true'; there is no raised metal on that diameter, so there is nothing to "scrape" with. It is fine the way it is...that's how it was designed.
P.S. If you 'break' the edge on that hole, or round it, or bevel it, that will just leave an avenue for dirt/carbon/etc particles to collect. For proper function, it's best that there is no "recess" at the edges of those oil holes.
P.S. If you 'break' the edge on that hole, or round it, or bevel it, that will just leave an avenue for dirt/carbon/etc particles to collect. For proper function, it's best that there is no "recess" at the edges of those oil holes.
Last edited by 7T1vette; Jan 20, 2013 at 01:37 AM.
