Jump to content
SAU Community

Reimax Or Jpc Oil Pump Gears?

bubba

By bubba,
in Engines & Forced Induction

 Share

Recommended Posts

bubba Grand Master

bubba

Posted
Posted

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?

Link to comment
Share on other sites
djr81 Grand Master

djr81

Posted
Posted (edited)

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 by djr81
Link to comment
Share on other sites
bubba Grand Master

bubba

Posted
  • Author
Posted

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.

Link to comment
Share on other sites
djr81 Grand Master

djr81

Posted
Posted

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.

Link to comment
Share on other sites
bubba Grand Master

bubba

Posted
  • Author
Posted

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.

Link to comment
Share on other sites
Legionnaire Collaborator

Legionnaire

Posted
Posted

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?

post-36390-0-47688800-1315380209_thumb.jpg

Link to comment
Share on other sites
Legionnaire Collaborator

Legionnaire

Posted
Posted

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.

Link to comment
Share on other sites
DR 32R Rising Star

DR 32R

Posted
Posted

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.

Link to comment
Share on other sites
  • 6 months later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Count Grantleyish
      Vic Wasteland Thread - 15.0

      By Count Grantleyish · Posted

      People still have Skylines? I thought they're non-existent now. 
    • pogman
      George's R33 GTST build

      By pogman · Posted

      Harness update time have had great fun and learnt so much already so far with this project. I started off making both the ignition and injector sub harnesses in the hope any mistakes i made here aren't as hard to undo and learn from as the main harness.  A cool comparison of the old harness using presumably TXL wire and the new which is using Tezel. Also opted to use DTM plugs to keep the whole setup as neat and tidy as possible and tucked the wiring under the coil bracket to try and keep it all from sticking out too much. Although the injector harness, I'm not overly happy with as I'm still using the rubber boots that are supplied with the type of plugs it just looks ugly and sticks out like a sore thumb with the white identifiers so a slight redesign may be done.   Then it was main harness time and most importantly trying to route it nice and away from the heat it will use the OEM heater hose routing which is no longer present to keep the harness up high and secure. it's amazing how much smaller this harness is able to be compared to the old one. plugged everything into the emtron and with the help of the tuner again attempted to start it up and instantly fired up and running smoothly on all 6 which was a big shock to myself. So still some routing and adjusting to be done for the final fit up and installing a knock sensor harness plug which is in the post all has gone surprisingly well.     The old harness for shits and giggles.
    • GTSBoy
      Hello Everyone

      By GTSBoy · Posted

      They do that at random every now and then, with almost no detectable cause. Mine has done it a couple of times (over 25 years!!). Never worked out why.
    • Triple OG
      Hello Everyone

      By Triple OG · Posted

      I don't post on here and have been lurking for some time now. Many of the topics have helped me out more times than i can count. I was racing yesterday (11/9) and blew a front right CV shaft. I have spares so I popped a new one in. A thread i read previously said to check the engine mounts if you blow a front CV. Upon inspection, the front right mount was completely separated from the upper plate. This discovery saved me time and money, because i would have blown another CV if i went back out. Just wanted to thank you guys and wish everyone luck with with their builds. (Now if we could only come up with a solution for my power steering belt flying off after hitting the rev limiter, lol)
    • r32-25t
      GReddy Injector Help!

      By r32-25t · Posted

      Either way he still need those style of spacer to go into the manifold because the photo he currently has is not going to work 
×
×
  • Create New...