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Rb30/26det Advice

PALADN

By PALADN,
in Engines & Forced Induction

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PALADN Community Regular

PALADN

Posted
Posted (edited)

Hey guys.

I have built an RB30/26 Head.

MODS

rb30 series 2 block

rb26 head (fully reco)

PAR rods

Aries Pistons

All ARP bolts

ACL Racing Bearings

Race preped crank

High Energy 8.5Lt sump

Knock Sensors Moved higher on the block

Nismo Twin Plate

After Market Smaller Balencer

870cc Injectors

Jun Oil pump

Jun Drive Collar

External Oil return (back of head to sump)

Thickest Cometic metal head gasket (recommened by rocket to use with the aries pistons??)

High mount manafold

Garret GT3071R

Surge tank with 044

After market fuel rail

After market pressure reg

Link G2 ecu (with air inlet temp sensor)

I think thats everything

Ok heres my problem

The engine has been having oiling issues since it was built. we first installed a tomie oil kit into the block with no luck. It still poored oil into the catch can at mid to high rpm. We then pulled the head off and blocked off the rear oil feed. Seamed to work better but still puts oil into the catch can. Part of the issue is that when hot the oil pressure sits at around 25-35psi at idle but any touch of the rpm and it jumps to 100psi.

Does anyone have any sugestions? I was thinking of some how turning the pump pressure down??? is this easy to do? if so how?

Just as a side note the engine made 230Rwkw and 560Nm torque on 13psi

Also anyone got any sugestions on a new turbo? cant be to lagy

Edited by PALADN
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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

have you looked at our oil controll thread by Sydney Kid ?

Did you run a oil return line from the back of the head to the sump?

did you make the oil return holes bigger to the sump ?

did you change the baffles and go for some after market ones?

Adriano Grand Master

Adriano

Posted
Posted (edited)

Im hoping you forgot to put the crank collar in your list of mods, or youll be looking at more than a sump off job soon. Do you know what bearing clearances you are running, tight clearances increase oil pressure.

Edited by Adriano
rockabilly Rising Star

rockabilly

Posted
Posted (edited)

hi mate,to drop pressure in an oil pump you need either a weaker relief spring or the same tension spring but shorter in length.. the sump must be removed then you can see the oil pump relief nut, undo that and a spring and plunger fall out. then its a new spring and away you go.

Edited by rockabilly

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