After rebuilding my RB26 with the following specs I have spun a bearing on no 2 after 2000kms. All of the other bearings are also hammered - and I believe it may be due to a clearance issue.
Here are the specs:
Aries Pistons and rings (86.5mm)
std rods with ARP bolts
ACL Race series bearings
STD oil pump (start the flaming....) oil pressure = 20psi hot at idle up to 80psi odd at high revs (ie good oil pressure)
Trust baffled sump (insert type, not weld on)
Castrol 10W60 edge syn oil
2xoil coolers
external filter block
Tomei head oil restrictor
The engine ran strongly and made good power (high 300rwkws), the knock recorded (pwr fc) was always <35, AFR always logged and spot on via laptop and wideband.
They should be the related specs required - please ask if you require more info.
My engine was built with around 2.5 thou clearance on the rod bearings, although the factory spec as per the manual is 0.8 - 1.5 thou. I am wondering if the greater clearance of 2.5 thou has killed the bearings and what clearances people are using in similar built motors of the same horsepower.
I am looking for ideas from people with EXPERIENCE / and or ENGINE BUILDERS of 400rwkw RB26 engines here - please don't post if you don't know what you are on about!!
Any help is greatly appreciated, I really don't want this to happen again!!!!
Cheers,
Andrew
Blue32