Oil Pump Question : 600+Hp Rb26

[rb26stagea]

Hi guys,

I'm trying to (still) sort out my rebuild, and have been advised that the N1 oil pump I have won't be reliably up to the 400awkw we are aiming for. I was looking at the Tomei or HKS units, but have concerns that they will flow too much and fill the head...? I know the Tomei can be adjusted for flow, but will it be sufficient to make it a safe engine? I'm happy to spend where I need to, but don't want a hand grenade under the bonnet...

Once again, I'm looking for qualified advice from those who have experience with building reliable rb26 engines.

Cheers peeps!

Micah.

[Ants]

Mate, Tomei Oil Pump will do the job for you for sure.

If you put oil restrictors in your block (also Tomei) that will resolve the oil flow to your head which are not expensive.

Cheers,

Anthony

Edited November 29, 2012 by Ants

[djr81]

Tomei have an external adjustment for the bypass. So they are better in this respect to the other pumps.

You need a large capacity sump to go wth it as well as the restrictor as mentioned.

Then make sure the blow by is under control as at the end of the day that is what keeps the oil in the head.

[R31Nismoid]

Tomei pump is the cream of the crop... But as stated you need to then spend on a sump (and then the $$$ each time you service), ensure all the oiling is 100% right and so on.

Search the FI section for more info on N1 pumps, honestly there is not the problem people make out.

Countless people using them fine.

[rb26stagea]

Thanks for the advice guys: already have the tomei baffles fitted, so to be safe I'm looking at the tomei pump and restrictors?

I'm a big fan of overengineered and underworked... I want to do this once and do it right. I just don't want to overspend if its not necessary.

Everything else (bar the turbos: I'm now running hks gtss twins) has been built to support 700+hp

I just want the old girl to be reliable and SAFE.

[rb26stagea]

Also, have had a 2litre or so oil cooler built into my radiator, so there's plenty of oil capacity available.

[R31Nismoid]

You need a larger sump - 9L or so. The Tomei "extension" really isn't enough to be really safe... Restrictors and a oil cooler will still see you run low on oil with a Tomei pump.

Reliable and safe is one thing (and can be done), spending 10k more than you need is another

[Ants]

Just a quick question what is it going to be used for i.e. drag, track, occasional street warrior and what car is it going into (I see you have a Stagea which is awesome).

This will assist in clarifying what you may need to do i.e. head oil return feed, sump extension etc...

Edited November 29, 2012 by Ants

[rb26stagea]

The car is my weekender: 100% street driven: it will never see a track under my ownership. Really, it's not driven very hard 95% of the time.

[rb26stagea]

...and yes, it is my stagea engine... Cheers for the quick feedback guys!

[rb26stagea]

Double post: disregard...

[dkbcleaner]

your making a lot of power and you will definitely need a proper oil control set up. With any larger oil pump you will definitely need a larger sump. have a read of this.

http://www.skylinesaustralia.com/forums/topic/110680-oil-control-in-rbs-for-circuit-drag-or-drift/

and this..

http://hioctaneracing.com/blog/2010/11/19/the-reality-of-the-rb26-oiling-system-part-2.html

[rb26stagea]

Thanks all for your advice: according to SK's thread (which I will adhere to), all I need is a 1.5mm restrictor , as my car is 100% street driven.

Very much appreciate the help!

Micah

[GTR KID]

Hey guys I'm on the same boat here I've done a lot of research about problem issues with GTR's mainly oil feed

I am aswell building a 600hp now when I spoke to my mechanic he just suggested that it will be fine to just run with a N1 oil pump and tomei baffles and that would be find I suggested what about a sump and he said it will be fine what are your thoughts

[wedge_r34gtr]

Hey guys I'm on the same boat here I've done a lot of research about problem issues with GTR's mainly oil feed

I am aswell building a 600hp now when I spoke to my mechanic he just suggested that it will be fine to just run with a N1 oil pump and tomei baffles and that would be find I suggested what about a sump and he said it will be fine what are your thoughts

As they discussed above, it depends on your intended use:

100% street = can get away with N1 & stock baffeled sump

any track work = High flow pump (Tomie or Nitto) + 9l baffled sump with extended pickup

My thoughts are that's it's better to be safe then sorry.

Edited January 22, 2013 by wedge_r34gtr

[GTR KID]

Damn it

I'm intending to do track days

[Nee-san]

You guys could also look at getting the Reimax gears for the OEM/N1 style pump.

400 odd dollars on Ebay, maybe not quite as good as tomei but will save you some $$$$

[BoyWhoCriedWolf]

...and yes, it is my stagea engine... Cheers for the quick feedback guys!

Hey Micah, hows the Bimmer going?

I used the N1 on my stagea, I have the tomei baffles in the sump, the car was driven very hard and was tracked. Never had a problem, 375kw at the wheels.

Cheers,

Ken

[GTR KID]

Tomei pump is the cream of the crop... But as stated you need to then spend on a sump (and then the $$$ each time you service), ensure all the oiling is 100% right and so on.

Search the FI section for more info on N1 pumps, honestly there is not the problem people make out.

Countless people using them fine.

could you please send the link for this mate