boosted91crx

went to the track today and on my 4th or 5th pass the oil light came on and it dropped out of vtec, so i turned the key off and coasted threw the traps. got it home and tore it down and here the oil pump actually shattered and peices of it was in the pick up tube. any ideas on what to look for so this dont happen again? on a side note even though the track was ice cold and no prep i set a PB MPH wise, 143.06. no traction so new ET best.

boosted91crx

more info : crank is a ls crank, ls rods. was revving to 9300 perhaps the ls crank cant rev that high with out being balanced?

1.5Slowmatic

what crank pulley you runnin

Boosted_01 R

Sounds like you need a ATI Damper, simple as that in most cases, GL

mar778c

iTrader: (1)

Yes, you definitely need a real damper.

boosted91crx

was using oem GSR pulley that came on the short block.

sweetfwdthunder

iTrader: (2)

Yeah you definitely need to get an ATI! I've broken oil pumps with the stock pulley and the ctr n-1 before, its definitely a necessity.

HiProfile

OEM pump? Was the rubber in it perfect, or cracking? Was the block ever align-honed? 8lb flywheel and unspring clutch? Those are the main issues that can shatter the pump from harmonic vibration and drivetrain shock. Couple that with no accessories to drive (and loose alt belt), the oil pump takes a beating. From what I can tell its almost tool steel, meaning it's less ductile (cracks like glass).

BTW 143 is flyin. Links to the setup?

boosted91crx

it has std bearings in it so i dont think it was aligned bored, or am i mistaken in thinking that a align bore will change bearing size? stock flywheel sprung disk, alternator belt is tight. well that set up is now torn down and im going a little different route, it was ls crank ls rods and cp pistons , im going with gsr crank gsr eagle rods and wiseco pistons, with upgraded pins of course. oh and the pulley is good shape no cracks or issues.