oil pumps

[gtrjon]

your comparing a special order item that wasnt even in full production at the time of order to an item thats regularly stocked by tomei usa.... i got my pump in under a week. economics my friend

[cortexx]

The R33 systems had been in production , i ordered on a second shipment .

The Tomei turbos were also 3 months to get here , tomei cams also took months . Tomei manifolds and dumps took over a month .

HKS oil cooler was 2 weeks , vipec ecu was 2 weeks , APexi AVCR was 4 days (from japan) , Defi Gauges were 3 weeks from Japan , rips oil catch can was made to order in Australia and was in my hand in less than 2 week ,...

see a pattern here ? I do , maybe just my luck , but then again maybe not

[gtrjon]

im sorry i think you need a new supplier. i had my tomei cams in 4 days from japan and my $7000 worth in other various tomei parts in under 2 weeks from tomei usa.

[cortexx]

Supplier is daryl from rightdrive - he orders weekly from tomei USA .

It matters not anyway , the Nitto pump or HKS are looking good , tomei pumps have broken so nothing is unbreakable . Rather spend the extra cash on other areas like the valvetrain

[Speeddm]

Nitto makes one of the best pumps available. The Canadian distributor is blackmarketmotorsports
they are placing an order this week.

Plus they will match Rawbrokerages pricing.

[NismoS-tune]

http://www.gtr.co.uk/forum/162356-nitto-oil-pump-2.html

http://www.gtr.co.uk/forum/162157-nismo-oil-pump.html

Found these while scanning the net for parts.

[Dragon Humper]

I don't know man, I have yet to find a better bang for your buck than an N1 pump with Reimax Gears in it. You don't need 120psi of oil pressure and the flow from an N1 is more than enough with a restricter installed to limit the flow to the head. Granted you should be opening up the oil clearances on the mains and the rods if you want to rev her to 9500rpm but the flow should still be less than what an N1 can deliver. With the spring in an N1 you should be right around 80psi at 9000rpm which is more than enough.

N1 is $250 and the gears are $450 and will gobble up about 70% of the HP to run as a pump with much larger gears. Won't generate as much harmonics either (every little bit matters).


Jon.

[RSTuning]

The Internet is full of ******** in regards to the pumps and which is better, here are some facts.

Stock and N1 are not the same. N1 Does have different internal channeling. But Both stock and N1 have the same fault Sintered metal gears, look up sintered metal.

JUN, NItto, HKS, all very similar. Use larger Internal gears made of a chromoly steel all the pumps are great but not the best.

Tomei, The only pump i would ever run if i was running a oem internal pump. The reason for this is the 3 gear design,

If you look closely on the gear design, the tomei uses a saw tooth gear between the crank engagement gear and the center gear. At which point the center gear and the outside gear use a geroter design.

Talk to any engineer and they will tell you that a saw tooth design has much better vibration dissipation properties than a gerotor design.

In my opinion there are only 3 options.


N1 Pump with reimax gears.
Tomei Pump
External pump. Dry or wet sump but external.

This should settle the topic as anything else is just internet babble.

Oh and Tomei can also be adusted externally by shimming the relief valve. but in all honesty unless you are building a 700whp track car how often will you be adjusting the oil pressure.

[Skym]

Ross sell external oilpumps that mount just below alternator -

http://blog.rossperformanceparts.com/nissan-skyline-external-oil-pump/

External oilpump kits are cheaper than dry sump kit, but not by much -

http://www.skylinesaustralia.com/forums/topic/252332-rb-external-oil-pump-kits/

I think that kit includes sump, etc.

But I think dry sump is best, as it solves blowby / oil exiting camcover, oil starvation problems.

[Dragon Humper]

If you look closely on the gear design, the tomei uses a saw tooth gear between the crank engagement gear and the center gear. At which point the center gear and the outside gear use a geroter design.

Talk to any engineer and they will tell you that a saw tooth design has much better vibration dissipation properties than a gerotor design.

That's what I like about the N1 with the Reimax gears, has a sawtooth pattern to help knock out harmonics and small gear diam. to free up some HP. If you can find a used N1 that isn't all chewed up inside, you could be in the money for as little as $600......that's a bargoon and nearly bullitproof.

Here's a pic, look at the outer ring and you see what I mean.......

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

Jon.

[cortexx]

Thanks for this info , this thread has been an eye-opener , so many different opinions and points of view , you did a good job of justifying your reasons .

BTW what platforms do RStuning ( i assume you do this for a living) tune ? and if you have skyline experience - how many rb26 engines have you built , worked on ?

cheers

The Internet is full of ******** in regards to the pumps and which is better, here are some facts.

Stock and N1 are not the same. N1 Does have different internal channeling. But Both stock and N1 have the same fault Sintered metal gears, look up sintered metal.

JUN, NItto, HKS, all very similar. Use larger Internal gears made of a chromoly steel all the pumps are great but not the best.

Tomei, The only pump i would ever run if i was running a oem internal pump. The reason for this is the 3 gear design,

If you look closely on the gear design, the tomei uses a saw tooth gear between the crank engagement gear and the center gear. At which point the center gear and the outside gear use a geroter design.

Talk to any engineer and they will tell you that a saw tooth design has much better vibration dissipation properties than a gerotor design.

In my opinion there are only 3 options.


N1 Pump with reimax gears.
Tomei Pump
External pump. Dry or wet sump but external.

This should settle the topic as anything else is just internet babble.

Oh and Tomei can also be adusted externally by shimming the relief valve. but in all honesty unless you are building a 700whp track car how often will you be adjusting the oil pressure.