Jump to content
SAU Community

Recommended Posts

hey they sponsor my racecar so i mention them where i can...lol

did somebody say Vi-PEC ? :blink:

Haha, forgot about that one.

Did you say Vi-PEC, I have a Vi-PEC too! We should all get Vi-PEC's...

Vi-PEC!

Edited by bigmikespec
Were the Group A GTRs from the early 90's a dry sump or externally oiled?

interesting question - anyone have the answer?

i question the reliability of an external oil pump although i might be on the wrong page :blink: ...what are the points of failure other than the 1st & obvious being the belt drive? i'd guess this belt could randomly snap just like any other belt - my thoughts is that its great for circuit where the car is highly maintained but for the street...would it be a feasible option?

paul, you have a nitto pump right & its fine for your monstrous setup?

the likes of crd dont recommend external pump (unless it is an extreme application)

interesting question - anyone have the answer?

i question the reliability of an external oil pump although i might be on the wrong page :blink: ...what are the points of failure other than the 1st & obvious being the belt drive? i'd guess this belt could randomly snap just like any other belt - my thoughts is that its great for circuit where the car is highly maintained but for the street...would it be a feasible option?

paul, you have a nitto pump right & its fine for your monstrous setup?

the likes of crd dont recommend external pump (unless it is an extreme application)

I run a JUN pump on mine...ive been smashing it off the limiter for a few years and now the anti-lag.

I wont be running an OEM style pump on my engine when i pull it for a freshen...external is the way to go. For all my tough street builds i exclusively use Nitto...the best.

Edited by DiRTgarage
interesting question - anyone have the answer?

i question the reliability of an external oil pump although i might be on the wrong page :D ...what are the points of failure other than the 1st & obvious being the belt drive? i'd guess this belt could randomly snap just like any other belt - my thoughts is that its great for circuit where the car is highly maintained but for the street...would it be a feasible option?

paul, you have a nitto pump right & its fine for your monstrous setup?

the likes of crd dont recommend external pump (unless it is an extreme application)

If they are setup properly in the first instance there is no plausable reason why they should fail. And by setup properly i mean having the correct alignment in both planes, belt guides on BOTH pulleys & correct belt tention.

The only ways i can see that it could fail other than incorrect setup would be:

- teeth wear (same as ur cam gears though, how fast do they wear? not very fast at all)

- belt damage i.e little snick from debris hitting it etc

- bearing material passing through the pump scratching both the pump housing & gear sets (you should be running a pre-pump filter anyway)

The only downsides for running an external pump in a street based car are:

- Required to run thermo fan setup as pulley on front of balancer hits clutch fan

- Little fiddley to setup correctly

Other than that its full of win :D

P.S You should be maintaining your car properly anyway, if you let maintenance or regular checks lapse, thats when a big failure is most likely to happen.

My purchased new from nissan N1 failed 2 weeks ago, nailed 2nd, hit the limiter & thought I heard something..... checked my oil pressure to notice it was down to about 15psi & dropping to zero not long after. shut it straight off so hopefully not to much damage. been on my 26/30 making 455rwhp for about 3k, all balanced with Ati balancer, pro engines collar.

pulled the pump off to find gears smashed to pieces, minimal damage to the crank collar. Ill never use an N1 pump again, massive waste of money to buy and almost cost me a fortune in f@#ked motor. think I was lucky to catch it before massive engine failure.

The question now is what pump. I have an RB25 pump, anyone had any problems with them breaking? or does an RB30et toothed oil pump perform good enough to support twin cam setup? Thoughts?

My purchased new from nissan N1 failed 2 weeks ago, nailed 2nd, hit the limiter & thought I heard something..... checked my oil pressure to notice it was down to about 15psi & dropping to zero not long after. shut it straight off so hopefully not to much damage. been on my 26/30 making 455rwhp for about 3k, all balanced with Ati balancer, pro engines collar.

pulled the pump off to find gears smashed to pieces, minimal damage to the crank collar. Ill never use an N1 pump again, massive waste of money to buy and almost cost me a fortune in f@#ked motor. think I was lucky to catch it before massive engine failure.

The question now is what pump. I have an RB25 pump, anyone had any problems with them breaking? or does an RB30et toothed oil pump perform good enough to support twin cam setup? Thoughts?

Nitto pump is the only OEM style pump ill use or recommend using.

I will have a dry sump kit available in a week or so just waiting on the last few bits to be anodised. The kit has been tested on two 500+HP GTR's for the last 18 months without a problem. For anyone interested PM me for details.

Other than the gear set's in the N1's are there any other problems/design faults to be aware of? eg if/when I run a splined collar and gear set with an oem N1 pump, will somthing else fail?

NB: In the states, N1 pumps sell for as little as 192USD + shipping. I bought 3!!!

that's a bit worrying.

splines are the best option imo without opting for a dry sump. using a splined system you can use a material that does not have to be as tough as the OEM system (which is very very tough but also brittle).

Ideal gears will have the plastic deformation limit quite far from the UTS. As obviously the closer the plastic limit to the UTS the more brittle it is. Personally id rather the gears round themself off than sheer in to pieces.

what material are these splines/gears going to be made off?

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



  • Similar Content

  • Latest Posts

    • By popular demand.. it was a coil. Got my hands on 1 new OEM coil, replaced with the one that made the less noise difference when I unplugged it while the car was running and started the car up. No stutter and the engine light was gone. I guess I’ll buy the other 5 they have lol
    • No, code 21 is very straightforward. It can only be the things described in that diagnostic flow. In fact it has no way of knowing that the spark plug resistance is out of spec.
    • Hi, SteveL Thank you very much for your reply, you seem to be the only person on the net who has come up with a definitive answer for which I am grateful. The "Leak" was more by way of wet bubbles when the pedal was depressed hard by a buddy while trying to gey a decent pedal when bleeding the system having fitted the rebuilt BM50 back in the car, which now makes perfect sense. A bit of a shame having just rebuilt my BM50, I did not touch the proportioning valve side of things, the BM50 was leaking from the primary piston seal and fluid was running down the the Brake booster hence the need to rebuild, I had never noticed any fluid leaking from that hole previously it only started when I refitted it to the car. The brake lines in the photo are "Kunifer" which is a Copper/Nickel alloy brake pipe, but are only the ones I use to bench bleed Master cylinders, they are perfectly legal to use on vehicles here in the UK, however the lines on the car are PVF coated steel. Thanks again for clearing this up for me, a purchase of a new BMC appears to be on the cards, I have been looking at various options in case my BM50 was not repairable and have looked at the HFM BM57 which I understand is manufactured in Australia.  
    • Well the install is officially done. Filled with fluid and bled it today, but didn't get a chance to take it on a test drive. I'll throw some final pics of the lines and whatnot but you can definitely install a DMAX rack in an R33 with pretty minor mods. I think the only other thing I had to do that isn't documented here is grind a bit of the larger banjo fitting to get it to clear since the banjos are grouped much tighter on the DMAX rack. Also the dust boots from a R33 do not fit either fyi, so if you end up doing this install for whatever reason you'll need to grab those too. One caveat with buying the S15 dust boots however is that the clamps are too small to fit on the R33 inner tie rod since they're much thicker so keep the old clamps around. The boots also twist a bit when adjusting toe but it's not a big deal. No issues or leaks so far, steering feels good and it looks like there's a bit more lock now than I had before. Getting an alignment on Saturday so I'll see how it feels then but seems like it'll be good to go       
×
×
  • Create New...