What Year/month Was The R32 Oil Pump Problem Fixed?

[Vija]

Hi all, first post on here and looking to import an R32 GTR. Just sold my 300zx TT after 6 years, felt like it was time for a change!

Anyway I cannot find a definitive answer on what year they fixed the R32 GTR oil pump issue. So far I've read all the 1993 models, only 1994 and only late 1994. Done heaps of searching but it's confusing me more with various dates.

Anyone know for sure?

Cheers

[R31 Gagz]

Hey Vija,

Are you referring to a pump fail or oil starvation/surge issue?

As far as I know there aren't really any problems with the standard oil pump, maybe if you do some track work with a 14-18 year old oil pump it would probably give way at sooner or later. I have heard that a lot of people have trouble with failing newish N1 oil pumps but others that are dedicated track cars also run them and have no trouble what so ever.

A common issue with track driven R32 GTRs is oil surge/starvation....the restrictor on the head feed is too large with the return too small causing all the oil to get banked up in the head and leaving nothing in the sump. A quick fix is to overfill by 1 litre before any track work and empty it back out after, but to do it properly you need to fit a smaller feed restrictor and either bore the return gallery or plum an external return line.

Hope that helps.

Cheers!

Gagz

Edited December 19, 2007 by R31 Gagz

[Vija]

Hey Mate,

Thanks for the reply. I think it was maybe the oil pump collar where it attaches to the crank? Think early versions were very thin then it was beefed up but not sure when.

Hey Vija,

Are you referring to a pump fail or oil starvation/surge issue?

As far as I know there aren't really any problems with the standard oil pump, maybe if you do some track work with a 14-18 year old oil pump it would probably give way at sooner or later. I have heard that a lot of people have trouble with failing newish N1 oil pumps but others that are dedicated track cars also run them and have no trouble what so ever.

A common issue with track driven R32 GTRs is oil surge/starvation....the restrictor on the head feed is too large with the return too small causing all the oil to get banked up in the head and leaving nothing in the sump. A quick fix is to overfill by 1 litre before any track work and empty it back out after, but to do it properly you need to fit a smaller feed restrictor and either bore the return gallery or plum an external return line.

Hope that helps.

Cheers!

Gagz

[R31 Gagz]

Hey Mate,

Thanks for the reply. I think it was maybe the oil pump collar where it attaches to the crank? Think early versions were very thin then it was beefed up but not sure when.

Yeah I think Ive heard a similar thing, you might have to do some searching though....should be covered on the forum somewhere.

Cheers!

Gagz