low oil pressure

[kiwivh]

Has any had problems with low oil pressure, ie around 20psi at full revs?

[SSDwellah]

No. I am using the stock Z32 gauge and sender in my car and it only got as low as maybe 15-20 PSI at idle.

[gs14racer]

i was getting 20 psi at idle 90 psi at 3000 rpm

[kiwivh]

Yea seems very low. The engine is out a jet boat with with twin VH45DE engines, the other engine has plenty of pressure.

Have stripped part of the engine now, oil pump looks fine aswell does the bearing clearances. Dont know where else the pressure can be lost???

[mtcookson]

A potential problem could be the crank pulley bolt. The oil pump is driven by being clamped down by the crank pulley. Could just be that the bolt isn't tightened down enough and is allowing a bit of slip.

Torque specs according to the FSM:

353-373 Nm36-38 kg/m260-275 ft/lb

[elwesso]

Did you use a new sump? Ive seen the oil pans get dented, even just a little and it restricts the pickup...

Wouldnt mind seeing some pics of the setup...

[sijoko]

A potential problem could be the crank pulley bolt. The oil pump is driven by being clamped down by the crank pulley. Could just be that the bolt isn't tightened down enough and is allowing a bit of slip.

Torque specs according to the FSM:

353-373 Nm36-38 kg/m260-275 ft/lb

+1. You need to check this along with the pickup tube.

[kiwivh]

Yea it looks like that was the problem, small dent near the pick up. Cheers for the tip.

Ill get arond to posting some photos of the set up somewhere

[kiwivh]

Heres a couple of pics, will put one up of layout some time

http://kiwivh.zoints.com/album/?imgid=75886

http://kiwivh.zoints.com/album/?imgid=75887

http://kiwivh.zoints.com/album/?imgid=75889

[T45]

Those in/exh manifolds are SICK! More pics please. Also include some of the ute in the background in pic 2!!!

[kiwivh]

Heres a couple more picks of the boat complete

http://kiwivh.zoints.com/album/?imgid=76324

http://kiwivh.zoints.com/album/?imgid=76323

sorry the engine bay photo sideways and bad quality