Replacing RB26 oil and water pumps?

[PSIKO]

Hi

OK I've searched around for a long time now on various forums and I'm going around in circles with differing views.

I just need a definitive answer

Firstly, the engine (early model RB26) is on an engine stand at the moment. For peace of mind I'd like to replace the oil pump and water pump while the engine's out of the car.

Can I do these myself?

The water pump part should be easy ... just buy an R32 GTR item from Nissan and replace there on the stand. I won't bother with an N1 item as I've heard they're for constant high rpm usage.

But with regards the oil pump, I've heard people say "buy a JUN collar" or "weld a bit onto the end of the crank". What is the best option here?

Should I buy a standard Nissan oil pump and then buy the JUN collar as well?

I've also heard perhaps to buy an R33 N1 oil pump?

So confused!

Any help/tips/hints would be massively appreciated

[blk180]

at standard r32 oil pump will not need crank collar. N1 oil pump needs oil collar which is grub srewed on to the crank

[PSIKO]

Ahh ok cheers.

How about the R33 N1 oil pump ... does that need the collar as well ?

[Morgs]

It needs the collar

Do it

Standard crank drive isn't wide enough to engage the pump properly and the failure point of many early RB26s

[PSIKO]

Cheers Morgs - I thought you had done something along these lines so was kinda hoping for a reply from you

So basically I need to buy :

R32 GTR water pump

R33 N1 oil pump

JUN collar

All bolts straight up ?

Will it be possible for myself to do the job or will I need a workshop to do it?

Bearing it mind the engine's sitting on a stand.

Thanks !

[Morgs]

Won't bolt up, need to get collar machined onto crank

[PSIKO]

So it's a fair bit of work then?

Crank out etc?

[R32-GTS]

Julz. Take the crank to sweeting & deeney to have the crank collar made and welded on. Is alot safer than using the jun collar as it cant move , not that the jun collar should move but it could happen. I have the jun collar on mine.

[PSIKO]

Julz. Take the crank to sweeting & deeney to have the crank collar made and welded on. Is alot safer than using the jun collar as it cant move , not that the jun collar should move but it could happen. I have the jun collar on mine.

Cheers dude I might give that a go instead!