I am about ready to bolt my XU9J4 back together and have a couple of questions I hope someone with some experience in wet liner rebuilds may be able to help me with.
1. How serious do you get cleaning down the sealing surface in the bottom of the block? What typically do you clean the bottom of the liners up with and do you use eather a sealant or lubricant on the 'O' ring prior to installation?
2. The manual states that the head bolts should be tensioned as follows:
Stage 1: 60Nm
Stage 2: fully slack
Stage 3: 20Nm
Stage 4: +300 degrees.
I recall someone offering an altenate torque application that has proven successful and lower stress on the studs / M11 threads in block. Can anyone confirm an alternate torque for head studs, or is it best to stick with this standard?
3. What is the best cam belt to use. Does anyone know if Gates does a racing belt for this engine, or is the original the best bet.
I will be looking for 8000rpm on the new engine, new springs, titanium retainers, solid lifters, big cams, vernier pulleys, forged pistons (11.8:1), steel conrods - so things will be pretty well stressed!
This is the engine I have been looking for top flowing exhaust headers for.
Look forward to comments.