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Re: 3J Improved Production coupe- Racing Videos & Progress

Subject: Re: 3J Improved Production coupe- Racing Videos & Progress
by mcgee on 2015/8/3 3:43:13

Things are progressing albeit a bit slowly.
Have all the parts back now.
Head - All the exhaust valve stems were replaced, two valves were slightly bent so were replaced.
Block is back and painted.
Crank was polished and rods have new small end bushes.
I got some ACL race bearings. Rods were 0.0015" oil clearance which I am happy with.
Main clearance was 0.003" which is on the loose side. This will mean I have to find some 0.025mm oversize bearings to bring the clearance back down and may have to run half of each.
Interestingly my previous build had standard plus 0.001" race bearing, so the mains must have been really loose. Even with the crank being polished it doesn't remove that much material. This may have contributed to lowish oil pressures.
Anyway with ACL closing down, bearings are hard to come by, still in the hunt. Else I might have to go back to OEM.

Sump is finished, painted and ready to install.

Exhaust manifold - I got the collector finished and it is mounted in the jig, however in its current state the collector will hit on the head so will have to be put this on hold till the engine is back together. I will have to move the turbo position slightly from standard to get the collector to clear. This will have a flow on effect to the dump pipe angle.