Bronze valve guides in a cast iron head
#1
Bronze valve guides in a cast iron head
Just wondering if it's possible to use bronze guides in a cast iron head. I'm sure there is a difference in heat expansion rates where I think the bronze will try to expand first.
#3
If done correctly, with the proper clearance, it's a forever repair.
New guides are coated with Loctite before being pressed-in, and I've never heard of one moving.
Don't sweat the small stuff!
New guides are coated with Loctite before being pressed-in, and I've never heard of one moving.
Don't sweat the small stuff!
#6
I bought a guide made for a Brodix head because the dimensions were what I needed and did a test fit and of course it fit loosely in some of the guide holes so they might not work. The guides I removed were .565 OD. Had the problem off one guide coming loose. Haven't had much luck finding guides a little bigger.
http://www.summitracing.com/parts/bro-sh5651132p
http://www.summitracing.com/parts/bro-sh5651132p
#7
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#10
Looking at the old guides it looks like whoever put them in had drilled the holes just a little too big cause they use a punch to make indentations on the guides to make them fit tighter. Sooner or later more would have come loose.
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May 2nd, 2012 09:04 PM