BogusSVO
Well-known member
How to Deck a 4G63 Block
The block is a 7bolt 4G63T
The block was brought in to be prepped for rebuild.
It has been Bored and Honed to .020 over std.
Checking the block I found it had .0025 taper from front to back and has water pitting.
I set the block on the machine fixture; the block is on the main saddles.
I make a .0005 pass, Cyl #1 is shorter than Cyl # 4
I see I have a good level set up side to side, notice the dark low spots around #1 cylinder.
A MLS head gasket will not have had a good sealing surface.
[
Pass #2 is a .0015 cut
Still some pitting at the fire ring of the head gasket.
One more pass of .0015
The block looks good, and has a good head gasket sealing surface.
The block is a 7bolt 4G63T
The block was brought in to be prepped for rebuild.
It has been Bored and Honed to .020 over std.
Checking the block I found it had .0025 taper from front to back and has water pitting.
I set the block on the machine fixture; the block is on the main saddles.
I make a .0005 pass, Cyl #1 is shorter than Cyl # 4
I see I have a good level set up side to side, notice the dark low spots around #1 cylinder.
A MLS head gasket will not have had a good sealing surface.
[
Pass #2 is a .0015 cut
Still some pitting at the fire ring of the head gasket.
One more pass of .0015
The block looks good, and has a good head gasket sealing surface.
