Resleeve!
#4
02-26-2012 | 09:28 PM
Thread Starter
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Drifting
Joined: Nov 2011
Posts: 26
Likes: 0
From: La Crescenta,Ca
#6
02-27-2012 | 07:38 PM
Thread Starter
|
Drifting
Joined: Nov 2011
Posts: 26
Likes: 0
From: La Crescenta,Ca
reading, lots of reading
I did lots of fun reading and looking at what others are doing out there to cure this. LA Sleeve is not far from me and after talking to them they say they've done lots of these. Other option was a new block or a remanu. at over 5K
Block seems to be the main issue. I'm in the castings business and can kind of understand the issues, alum block, porosity, thin walls, thermal expansion, steel liners, thin/small seal at heads, then add pressure,,,,,
First attempt at this, put in new front cover and new stock cam shaft. original cam had some odd wear on one lobe. reassembled turn over, warm up, Knock,Knock. Same as before. This time pulled it and complete tear down. only isuue found was that one liner had what I would best describe as a wave down the inside of it. were the others felt smooth from top to bottom. Still a bit apprehensive but hopeful.
Funny this block has been around since the early 60's (Buick) and has been bored out. probably beyond it's max. (wall thickness) thin wall alum and pressure don't do well. OK Motors is going another step and adding a ceramic dip coating then baking it on to seal the blocks porosity. I had a customer going that route to cure their problems with some small cast parts that needed to function under pressure.
Block seems to be the main issue. I'm in the castings business and can kind of understand the issues, alum block, porosity, thin walls, thermal expansion, steel liners, thin/small seal at heads, then add pressure,,,,,
First attempt at this, put in new front cover and new stock cam shaft. original cam had some odd wear on one lobe. reassembled turn over, warm up, Knock,Knock. Same as before. This time pulled it and complete tear down. only isuue found was that one liner had what I would best describe as a wave down the inside of it. were the others felt smooth from top to bottom. Still a bit apprehensive but hopeful.
Funny this block has been around since the early 60's (Buick) and has been bored out. probably beyond it's max. (wall thickness) thin wall alum and pressure don't do well. OK Motors is going another step and adding a ceramic dip coating then baking it on to seal the blocks porosity. I had a customer going that route to cure their problems with some small cast parts that needed to function under pressure.
Last edited by jbarrios60; 02-27-2012 at 08:37 PM.
