Engine torn down, list of issues below:
Cylinders have been bored off center by about 1mm. Because of this the headgaskets don't seal around the cylinder properly.
We are 99% sure the coolant is coming from the water jackets behind the sleeves and leaking out of the bottom straight into the pan.
Evidence very strongly suggests a torque plate was not used when the block was machined for the sleeves.
The front-cover was not machined properly however it is at a point where the headgasket was able to compensate (no signs of leaking).
There is a very, very strong chance the block has cracked on the exhaust side just under where the two middle headbolts go as there is signs of coolant leaking there. Last port of call is to do a pressure test of the block, but we're pretty sure it's scrap.
Other things of interest:
All the windage trays and baffles were missing
Lots of snapped bolts all around the sump.
Cams appear to be 2nd hand (were sold to me as a new product).
All in all not very happy, that is a very expensive engine ($9,000) that has gone to waste. To add insult to injury, the porting job on the cylinder head was piss poor - all the ports are knife-edged at the 'divider' point and the valve stems / guides have copped it a bit too.
SR20-Forums - you now have the proof you've been wanting for a very long time.
Cylinders have been bored off center by about 1mm. Because of this the headgaskets don't seal around the cylinder properly.
We are 99% sure the coolant is coming from the water jackets behind the sleeves and leaking out of the bottom straight into the pan.
Evidence very strongly suggests a torque plate was not used when the block was machined for the sleeves.
The front-cover was not machined properly however it is at a point where the headgasket was able to compensate (no signs of leaking).
There is a very, very strong chance the block has cracked on the exhaust side just under where the two middle headbolts go as there is signs of coolant leaking there. Last port of call is to do a pressure test of the block, but we're pretty sure it's scrap.
Other things of interest:
All the windage trays and baffles were missing
Lots of snapped bolts all around the sump.
Cams appear to be 2nd hand (were sold to me as a new product).
All in all not very happy, that is a very expensive engine ($9,000) that has gone to waste. To add insult to injury, the porting job on the cylinder head was piss poor - all the ports are knife-edged at the 'divider' point and the valve stems / guides have copped it a bit too.
SR20-Forums - you now have the proof you've been wanting for a very long time.
Last edited by jakeb`
on 2013-10-23
at 11-59-18.
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