Quote:
Originally Posted by R32 Combat
There does seem to be an engineering issue with some RB30's running massive piston/bore clearance. Oil comsumption is crap and they are noisy. Mine has 0.006" some have even more. I think the guy's in Oz/Nz like this. Personally, I think it's sh1t. I'm runing 0.003" in the wisecos. The ACL's were causing the engine to use 1L of oil every 700miles.
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ACL pistons or 0.006 clearance is not the reason you used 1 liter of oil every 700 miles, you obviously had other issues to cause that.
In the past we have done some RB30's with Ross or Venolia pistons with 0.006-0.007 clearance (recommended by manufacturer) and although a bit noisey when cold they have run fine, made real good power and there has been no issue with oil consumption or DET.
We now use a different piston that runs 0.0035, its quieter obviously but other than that there is very little difference.
Rob
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