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As stated, if the motor is out of the car, you'd be mad not to give the engine the once over.

That said, cluster guage oil pressure is horribly inaccurate and at times does not even work at all for me. If the motor was/is running I'd be checking the oil pressure with a 3rd party oil pressure guage to get a tangible result/baseline.

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The block is still in the car, block will be coming out and it will be getting checked over and if it is a n1 pump I will be putting on a drive collar that's if nothing is too stuffed in the motor already

Sure... its definately advisable to have the crank collar fitted. However, depending on the intended use of the car, I do not think it is essential.

There are plenty of cars out there getting around with the smaller oil pump drive area with no problems come 150 XXX kms...

I for one would not be pulling the motor down just to install the collar...

Edited by R32Abuser

Ironically although I now sell crank collars I don't have one in my RB30 and I do have an N1 pump (10,000km so far). I am not planning to pull the motor out until I can afford a rebore with forged pistons full balance etc and then I will do the crank collar and assuming the pump is still in one piece (I don't limiter bash) I will put some aftermarket gears in it.

Yeah sweet as man seems heaps that are putting the n1 pump on do put the drive collar on, but I'm still not 100% sure if its a n1 pump or just a standard replacement pump, either way there is no drive collar on the crank so just gotta wait to pull the oil pump off and inspect on what went wrong hopefully everything is ok,

The car was been build for 400hp old owner never got a tune done and was running 11psi and use to give it a hard time, he even had it running 21psi he says...

Yeah engine builder told him from the start get a tune but he didn't.... But only 200ks on fresh rebuild with new parts and it already screwed out the oil pump? Could this happen only on 2000ks from rebuild, I can't wait to see what I find in there

Has the oil restrictors in the block been changed i have a forges engine with nitto pump and had to replace 2 of the oil retrictors for smaller size

as the larger pump sends excessive oil to the head leaving the bottom end in short supply not a good thing to do on the limiter i think you may have more problems than just the oil pump.....

Do it once and do it right, pull the thing down and see what failed.

Next step is crucial DETERMINE THE CAUSE OF FAILURE.

I can not stress how important this is, I see so many engines being built then die shortly after from the same thing due to no one fixing the original problem that caused the first failure.

Then get someone who knows RB engine to fix the problem and build you a strong engine.

Then happy days.

This would have initiated an automated SMS to Ash,

Let the battle begin :whistling:

:laugh:

More than enough info around about N1 pumps for people to decide themselves. It generally is not the actual pumps fault.

Driver/treatment, collar installation/overall balancing & tuning - all have a bearing on if they will last or not.

Found out some more info from old owner, when he was doing a burnout on limiter it just started to bog down and got hot,

He has also status that on idle the revs would drop down to where she would almost stall and that use to make the oil light flicker on fately... Believe the gauge was still working... Anyways it's at the cop and they are gonna start pulling it apart in 2weeks time to find the real problem

Sorry guys, havnt pulled the pump off just spoke to the engine builder and he told me that it's a n1 pump and he didn't put a drive collar on as the one of the crank was fine and when it trail it on it was gripping enough on the gear and crank,

When we finally get the pump off ill let yous know, he is just busy

So pulled the pump off, it has like a mark taken out of it on both sides with it has a high spot hard to explain,

Pulled sump of.... Metal everywhere, 5 oil squiters on the block have snap off, bearings are f**ked, #6 and 4 got really hot, crack is scored

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