Reimax Or Jpc Oil Pump Gears?

[bubba]

So I'm in the market for some new oil pump gears, I was going to get some JPC items but after discussions on the phone this morning, they are out of stock for another week or so.

I also queried the different sizes of gears and the guy said he wasn't aware of different sizes..

So I jumped on RHDJapan as I recalled seeing them specifiy two different OD's of gears and they only want AU$430 delivered for the Reimax gears while the JPC gears are AU$370+postage...

Which ones should I go for?

[djr81]

A week & 60 bucks is neither here nor there.

Which pump do you have - the Reimax ones are for the stock & N1 pumps - different sizes for different pumps.

By the sounds of it the local offering is for a stock pump?

Edited September 7, 2011 by djr81

[bubba]

Currently an RB30E pump but I have an N1 pump as well which is what I was going to put the gears in (neither JPC or Reimax do RB30 gears). The info on RHDJapan says there are two sizes of Reimax gears, both for the N1 pump but there is an early (bigger OD) and a later (smaller OD) version.

Yeah a week and $60 is neither here nor there, so that's why I'm torn with which way to go and I guess I am looking for peoples experiences with either.

[djr81]

Currently an RB30E pump but I have an N1 pump as well which is what I was going to put the gears in (neither JPC or Reimax do RB30 gears). The info on RHDJapan says there are two sizes of Reimax gears, both for the N1 pump but there is an early (bigger OD) and a later (smaller OD) version.

Yeah a week and $60 is neither here nor there, so that's why I'm torn with which way to go and I guess I am looking for peoples experiences with either.

Um, is there?

As far as I know (& I could be wrong) there are two different crank drives for the pump - the early R32 (Pre August 91 perhaps) being the least strong.

The OD of the N1 & stock pumps is different the stock somewhat perversely being larger than the N1.

I wasnt aware that the outside diameter of say a stock pump changed over the life of the RB26 but I could be wrong.

[bubba]

No, the OD of the N1 pumps, they state an early (81mm) and a later (77mm), the later being the same size as normal RB26 pumps.

http://www.rhdjapan.com/reimax-oil-pump-gear-kit-skyline-gt-r-rb26dett-54021

[djr81]

Try here & go to the reimax oil bits.

http://www.greenline.jp

They list different thicknesses & diameters. I am not at all sure the RHD Japan site is entirely correct in what they are saying.

Maybe this is the same as the all pumps are now N1 rumour?

Edited September 7, 2011 by djr81

[bubba]

The thicker ones are the Reimax Capacity Up gears that you have to send them your housing to have them fitted in to, RHDJapland list them separately: http://www.rhdjapan.com/reimax-reinforced-and-capacity-up-oil-pump-gear-kit-skyline-gt-r-rb26dett-59391

I guess this is why I'm leaning towards the Reimax gears over the JPC as the JPC guy said he wasn't aware of any size differences with the N1 pumps and that's why they moved to the N1 over the RB30E/T.

[Legionnaire]

No, the OD of the N1 pumps, they state an early (81mm) and a later (77mm), the later being the same size as normal RB26 pumps.

http://www.rhdjapan....-rb26dett-54021

Isn't it the other way around? N1 pump 77mm gears with assymetric tooth profile, factory RB26 81mm gears with symmetric profile, almost duocentric?

[bubba]

Just measured my N1 gears and they are 77x11mm and the inner gear has 11 teeth, so that's what I'll order

Anyone had any experience with either Reimax or JPC gears?

[Legionnaire]

No first hand experience with either of them, but why would oyu want smaller gears with thin metal? Isn't it better to just put 81mm reimax gears into a RB26 pump? It has a good 2mm extra metal for each gear, so IMO is less prone to breaking.

[bubba]

I don't have an RB26 pump, only an old N1 and an RB30E

[Legionnaire]

Oh... I see.

Canadian guys reported 77mm reimax gears to be good. So I think that's the way to go.

[bubba]

Yeah that's the way I'm leaning, it's not a super hi-po engine and won't be seeing over 6500rpm so she'll be right

[R32 TT]

..............and won't be seeing over 6500rpm so she'll be right

Yeesssss you will..

[bubba]

Nahhhhhhhh not on this engine

[DR 32R]

No first hand experience with either of them, but why would oyu want smaller gears with thin metal? Isn't it better to just put 81mm reimax gears into a RB26 pump? It has a good 2mm extra metal for each gear, so IMO is less prone to breaking.

Are their really that many reports of billet gears breaking? Certainly much fewer than sintered gear N1 pumps.

[bubba]

I found a recent report of some JPC gears breaking but I can't find ANY reports of Reimax gears failing.

[bubba]

Ordered the Reimax gears on Friday, will see how they go

[djr81]

Ordered the Reimax gears on Friday, will see how they go

How did you get on with this?

Also, has anyone used these? You have to scroll down a bit.

http://www.lewisengines.com.au/

[33GTRV]

try the spool gears, seem to go good