Rb26 Bottom End Build

[hkssam]

Hi all,

My RB26 keep failing oil pumps. I have replaced N1 pumps few times. motor was seized with last time failure. So now I'm going to rebuild it.

here are the stuff I bought

• brand new nissan R33/34 crank with long nose collar
  
• ACL bearings
  
• new 600-1000 hp ATI Balancer
  
• Old n1 oil pump housing (considered stronger than new N1 oil pump housing) with new Remax gear.
  

few question to ask from SAU gurus

do i still need to balance the crank with flywheel and harmonic damper? (is it needed since crank and damper are brand new )

bore not damaged. but is there anything need to be done with the block?

Wot else to be done?

please advise

[KiwiRS4T]

Do you drag or track the car? If so you may be running the sump below the level of the pickup. Do you have oil pressure and temperature gauges? Consider putting smaller oil restrictors in and have a read of at least the first few and last few pages of this thread:

http://www.skylinesaustralia.com/forums/topic/110680-oil-control-in-rbs-for-circuit-drag-or-drift/page__hl__sk+oil+control

[hkssam]

gonna be drag car

[Dajae]

N1 pumps are somewhat notorious for failing I believe.. Funds being considered, is a Nitto oil pump an option for you? Or even a Tomei?

So you're saying that first pump that failed, you didnt pull the motor down? Might've been left over pump gear debris that caused the more recent failure..