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Oil Control In Rb's For Circuit Drag Or Drift

Sydneykid

By Sydneykid,
in Engines & Forced Induction

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iruvyouskyrine
iruvyouskyrine

Whoops, yes i did mean catch can, corrected it now. Yes i understand that now. The two goals are to reduce the amount of oil entering the head, and equalize crankcase pressure. The oiling issue is s

fatz
fatz

less thinking more doing shit that works in the getto Dash ten on pasengers side Two dash 12 on the drivers side, angles and spaced so as not to hit shit and be able to tighten the f**ker up note

SimonR32
SimonR32

I ran my set up right up to 8800rpm at 2 bar (740rwhp) around the track with sticky R-comps the other night and not a drop out of the catch can. This is with no oil restrictors to the head and a stoc

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Sydneykid Grand Master

Sydneykid

Posted
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Can anyone post up any pics of the mods to the oilways in the head & block. I'm just wondering which ones to drill out & which ones need opening/funneling out.

Cheers

Stu.

Very simple, all of the returns to the sump.

If it's not an oil return, then leave it alone.

Cheers

Gary

Sydneykid Grand Master

Sydneykid

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SydneyKid there is a hole in the block near to oil return... Is it a good idea to return the oils from the head there?

Depends on what block, generally speaking, no there isn't. That's why the suggested return is into the top LHS of the sump.

Cheers

Gary

  • 3 months later...
donkey Community Regular

donkey

Posted
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hey there,

just a question, ive read so much about the oil problems RB engines have, these cars arnt cheap to but, so much technology goes into development of these machines, and there seems to be about 6 problems with the oil side that sydneykid lists, why the hell have they not developed a better system of oil supply when testing their cars? or maybe nissan should have hired someone with a brain (sydneykid) to do the most critical part of a car engine????????

GTRsean Grand Master

GTRsean

Posted
Posted
hey there,

just a question, ive read so much about the oil problems RB engines have, these cars arnt cheap to but, so much technology goes into development of these machines, and there seems to be about 6 problems with the oil side that sydneykid lists, why the hell have they not developed a better system of oil supply when testing their cars? or maybe nissan should have hired someone with a brain (sydneykid) to do the most critical part of a car engine????????

Ask Nissan???

If the GTR's were used and driven as a stock road car with no power mods etc, they would be fine 90% of the time.

They did fix the oil pump drive from late R32GTR's onwards(thats about it).

As soon as you push beyond factory specs and set limitations, that's where all these mods come in handy I'm sure.

Duncan Grand Master

Duncan

Posted
Posted

I was lucky enough to see the inside of the engine that gibson motorsport built for kerry packer's car back in 91 last week. while they had made some mods, they didn't have:

external oil return

restrictor in feed to head (in fact they had opened both feeds!)

wide drive on the oil pump

expanded internal oil return at the rear of the block.

I think it is fair to say the development that gary and the race team have done on these motors over many years, and they fact they have been willing to share the knowledge at no cost is very valuable to everyone on these forums

oh, and it spun a bearing on its first track day....

9krpm Mentor

9krpm

Posted
Posted
I was lucky enough to see the inside of the engine that gibson motorsport built for kerry packer's car back in 91 last week. while they had made some mods, they didn't have:

external oil return

restrictor in feed to head (in fact they had opened both feeds!)

wide drive on the oil pump

expanded internal oil return at the rear of the block.

I think it is fair to say the development that gary and the race team have done on these motors over many years, and they fact they have been willing to share the knowledge at no cost is very valuable to everyone on these forums

oh, and it spun a bearing on its first track day....

Ouchhhh! That's expensive. How much was the engine back then....~150-200g?

Dunc, what changes have been made on the engine/car that caused the spun bearing? Was there any new oil pump, was the rpm limit raised, stickier tyres etc etc?

9krpm Mentor

9krpm

Posted
Posted
Cheap compared to a f--ked engine or engines especially if you plan on doing a lot of klm's on the track.

Dazmo, what kind of dollar is it for your dry sump and is there anyway of fitting one into a rb with Aircond and power steering intact :D?

GTRsean Grand Master

GTRsean

Posted
Posted
You drill the smaller round holes to 9mm right?

I'm drilling mine out to 10mm, to match the head gasket.

Diameter of one of the oil drain holes, where it steps to the larger diameter is 9.65mm, and gasket was 10mm.

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