Nismo Oil Pump Failure - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

SingaporeR34 · 20th November 2002, 03:26 PM

Dear All,

This forum has been a great help with my R34 and I wanted to share with you my most recent experience.

About 3 months ago, went for an upgrade on the engine internals that included the camshafts (HKS 256 In and out), turbo's (HKS 2530), pistons (HKS Forged), water pump (Nismo N1) and oil pump (Nismo N1). To build a nice track car. The ECU was changed to a HKS FCON. Given that the temp in the tropics are quite high, uprated the Radiator as well (oil cooler already fitted), as well as fit the mines cam baffle plates and nismo oil sump baffle plates to ensure good oiling and cool running. Have been driving with this set-up for about 5000KM's, slowly running it in again. Then followed about another 1200KMs of varied highway driving.

Last Sunday the big test came on the track at Sepang in Malaysia. Did 3 sets of 5 laps (5.7 km each), car was running really well ( truely humming and It felt GREAT) (Temp oil max 110, water 86) on 1Bar boost for the entire track day. (Again since the first time out on the track, did not wat to push 1.35 bar, which is my max setting).

On the 1first lap of the 4th set, in the 2nd corner, oil pressure falls to 0 bar (reading as per Nismo 2.0 version for the display which has oil pressure, and by the gauge under the speedo), oil and water temps shoot up, immediately backed of the gas, shut her down and towed her back.

Monday, tuesday and this evening, we stipped the engine apart.

Damage is to the oil pump: the nismo oil pump screw scored heavily (measured it against spec, nearly 1 mm gone) on the side facing the crankshaft, no. 5 and 6 main bearings moderately scored (both the bearings and crankshaft journals). The rest of the engine (top end: camshafts, liners, pistons, conrod bearing and journals) look great - thankfully no damage there and nothing seems out of place.

The Nismo Oil pump comes as a complete unit, so the tolerances between the screw and the housing cannot be that far off what is supposed to be.

I am at a loss as to what would have caused the oil pump to fail. I just wanted to post this tread to find out if others with similar set up and using the Nismo pump had similar experiences. Additionally, hoping to find out if there are heavier built oil pumps out there that may be worth using. Since I need a new main bearing set and crankshaft, which would you recommend as well. Any advice is greatly appreciated.

Will head back to the garage with a camera to take some pictures to share with the rest, if that is useful.

regards,

Howsie · 20th November 2002, 03:33 PM

Sorry to hear that. It sounds like a sweet set up. Have you tried asking this question on the Oz site?

r33 v-spec · 20th November 2002, 04:06 PM

A problem like that from a NISMO product seems weird

DCD · 20th November 2002, 04:18 PM

Very sorry to hear that. At least you were quick enough to shut her down before something catastrophic happened!

There are a few other options on oil pumps. Reimax does a Gr. A pump which I believed was also used on the RBX GT-2 engine of the 400R as well as the Gr. A cars.( http://www.reimax.com/ )

Jun (http://www.junauto.co.jp/products/cy...tml?en#oilpump)

And I also think Tomei do one too....but their on-line catalogue seems to be down at the moment as they have just released a new one so I can't check (http://www.tomei-p.co.jp/top/top.html)

Best of luck in fixing the engine!

SingaporeR34 · 20th November 2002, 04:36 PM

thanks DCD - as usual you are to the rescue. The Reimax Pump Screw look like its made of a different material, as the Nismo one is of a bronze like colour. It looks like they have a different pump housing/assembly as well - the Nismo pump housing/assembly is the standard Nissan one. The only thing different is the pump screw.
Any idea what main bearing set the RBX GT1 engine or the 400R uses?

just off subject - I know still owe you a 10 MB video clip of the HKS R33GTR - still have no idea how to get it to you due to the size.

dan0h · 20th November 2002, 04:53 PM

Amazing that a Nismo part would exhibit such problems .. especially something critical like an Oil Pump. I bet everyone with Nismo pumps is now panicing!

Scary stuff

Glad its not too badly damaged though ... good job you have quick reactions and stopped it quickly.

Cheers,

Dan

somberg · 20th November 2002, 05:23 PM

I was advised like a month and a half ago that the standard Nissan oil pumps were a bit dodgy at the moment. Seems to maybe have hit your N1 pump as well then !

DCD · 21st November 2002, 02:19 AM

SingaporeR34...sorry no idea.

Compleatly forgot about that video! I think I may have a solution...I'll PM you

hipogtr · 21st November 2002, 08:00 AM

SingaporeR34... like everyone else, sorry to hear about the mishap.

Just to add to DCD's list, Trust also make a good uprated oil pump. I have it fitted to my car, although I haven't pushed it hard like you yet. Check out their online catalogue for details:

http://www.trust-power.com/03grex/oil_pump.html

Cya O!

SingaporeR34 · 21st November 2002, 11:07 AM

Is the Trust oil pump, the oil pump of choice for Nagata-san sicne you had your car done at Top Secret. Do you know what main bearing set you have installed at the moment?

Thanks, any help is appreciated.

Regards,

Rainer

hipogtr · 23rd November 2002, 02:43 AM

SingaporeR34... Yes, the Trust oil pump was the one chosen by Nagata-san at Top Secret. As for the main bearings, Sorry, but I never asked. If you want me to find out just let me know.

Cya O!

SingaporeR34 · 23rd November 2002, 12:55 PM

Yes please if you can find out which set he uses for his "track type" setup (as opposed to Drag racing)

Thanks

Singapore34

DCD · 23rd November 2002, 01:03 PM

SingaporeR34....just to add to the list...HKS also make an oil pump for the RB26.

SingaporeR34 · 23rd November 2002, 01:45 PM

Thanks for the help.

Regards

SingaporeR34

DCD · 23rd November 2002, 02:18 PM

Here is a vid of SingaporeR34 at Sepang circuit: (right click & save as)

Download me

20th November 2002, 03:26 PM	#1 (permalink)
SingaporeR34 GTR Register Member Join Date: May 2002 Location: Singapore Posts: 38	Nismo Oil Pump Failure Dear All, This forum has been a great help with my R34 and I wanted to share with you my most recent experience. About 3 months ago, went for an upgrade on the engine internals that included the camshafts (HKS 256 In and out), turbo's (HKS 2530), pistons (HKS Forged), water pump (Nismo N1) and oil pump (Nismo N1). To build a nice track car. The ECU was changed to a HKS FCON. Given that the temp in the tropics are quite high, uprated the Radiator as well (oil cooler already fitted), as well as fit the mines cam baffle plates and nismo oil sump baffle plates to ensure good oiling and cool running. Have been driving with this set-up for about 5000KM's, slowly running it in again. Then followed about another 1200KMs of varied highway driving. Last Sunday the big test came on the track at Sepang in Malaysia. Did 3 sets of 5 laps (5.7 km each), car was running really well ( truely humming and It felt GREAT) (Temp oil max 110, water 86) on 1Bar boost for the entire track day. (Again since the first time out on the track, did not wat to push 1.35 bar, which is my max setting). On the 1first lap of the 4th set, in the 2nd corner, oil pressure falls to 0 bar (reading as per Nismo 2.0 version for the display which has oil pressure, and by the gauge under the speedo), oil and water temps shoot up, immediately backed of the gas, shut her down and towed her back. Monday, tuesday and this evening, we stipped the engine apart. Damage is to the oil pump: the nismo oil pump screw scored heavily (measured it against spec, nearly 1 mm gone) on the side facing the crankshaft, no. 5 and 6 main bearings moderately scored (both the bearings and crankshaft journals). The rest of the engine (top end: camshafts, liners, pistons, conrod bearing and journals) look great - thankfully no damage there and nothing seems out of place. The Nismo Oil pump comes as a complete unit, so the tolerances between the screw and the housing cannot be that far off what is supposed to be. I am at a loss as to what would have caused the oil pump to fail. I just wanted to post this tread to find out if others with similar set up and using the Nismo pump had similar experiences. Additionally, hoping to find out if there are heavier built oil pumps out there that may be worth using. Since I need a new main bearing set and crankshaft, which would you recommend as well. Any advice is greatly appreciated. Will head back to the garage with a camera to take some pictures to share with the rest, if that is useful. regards,

20th November 2002, 03:33 PM	#2 (permalink)
Howsie GTR Register Member Join Date: Feb 2002 Location: Surrey Posts: 6,997	Ouch. Sorry to hear that. It sounds like a sweet set up. Have you tried asking this question on the Oz site?

20th November 2002, 04:36 PM	#5 (permalink)
SingaporeR34 GTR Register Member Join Date: May 2002 Location: Singapore Posts: 38	Thanks thanks DCD - as usual you are to the rescue. The Reimax Pump Screw look like its made of a different material, as the Nismo one is of a bronze like colour. It looks like they have a different pump housing/assembly as well - the Nismo pump housing/assembly is the standard Nissan one. The only thing different is the pump screw. Any idea what main bearing set the RBX GT1 engine or the 400R uses? just off subject - I know still owe you a 10 MB video clip of the HKS R33GTR - still have no idea how to get it to you due to the size.

20th November 2002, 04:53 PM	#6 (permalink)
dan0h GTR Register Member Join Date: Jul 2002 Location: Essex Posts: 2,004	Scary Amazing that a Nismo part would exhibit such problems .. especially something critical like an Oil Pump. I bet everyone with Nismo pumps is now panicing! Scary stuff Glad its not too badly damaged though ... good job you have quick reactions and stopped it quickly. Cheers, Dan

21st November 2002, 11:07 AM	#10 (permalink)
SingaporeR34 GTR Register Member Join Date: May 2002 Location: Singapore Posts: 38	Thanks Hipogtr Is the Trust oil pump, the oil pump of choice for Nagata-san sicne you had your car done at Top Secret. Do you know what main bearing set you have installed at the moment? Thanks, any help is appreciated. Regards, Rainer

20th November 2002, 04:06 PM	#3 (permalink)
r33 v-spec GTR Register Member Join Date: May 2002 Location: London Posts: 3,999	A problem like that from a NISMO product seems weird

20th November 2002, 04:18 PM	#4 (permalink)
DCD GTR Register Member Join Date: Jun 2001 Location: Tokyo Posts: 9,336	Very sorry to hear that. At least you were quick enough to shut her down before something catastrophic happened! There are a few other options on oil pumps. Reimax does a Gr. A pump which I believed was also used on the RBX GT-2 engine of the 400R as well as the Gr. A cars.( http://www.reimax.com/ ) Jun (http://www.junauto.co.jp/products/cy...tml?en#oilpump) And I also think Tomei do one too....but their on-line catalogue seems to be down at the moment as they have just released a new one so I can't check (http://www.tomei-p.co.jp/top/top.html) Best of luck in fixing the engine!

20th November 2002, 05:23 PM	#7 (permalink)
somberg GTR Register Member Join Date: Jun 2001 Location: Close to Ringland. Posts: 2,044	I was advised like a month and a half ago that the standard Nissan oil pumps were a bit dodgy at the moment. Seems to maybe have hit your N1 pump as well then !

21st November 2002, 02:19 AM	#8 (permalink)
DCD GTR Register Member Join Date: Jun 2001 Location: Tokyo Posts: 9,336	SingaporeR34...sorry no idea. Compleatly forgot about that video! I think I may have a solution...I'll PM you

21st November 2002, 08:00 AM	#9 (permalink)
hipogtr GTROC Member Join Date: Feb 2002 Location: Land of the Rising Sun Posts: 1,985	SingaporeR34... like everyone else, sorry to hear about the mishap. Just to add to DCD's list, Trust also make a good uprated oil pump. I have it fitted to my car, although I haven't pushed it hard like you yet. Check out their online catalogue for details: http://www.trust-power.com/03grex/oil_pump.html Cya O!

23rd November 2002, 02:43 AM	#11 (permalink)
hipogtr GTROC Member Join Date: Feb 2002 Location: Land of the Rising Sun Posts: 1,985	SingaporeR34... Yes, the Trust oil pump was the one chosen by Nagata-san at Top Secret. As for the main bearings, Sorry, but I never asked. If you want me to find out just let me know. Cya O!

23rd November 2002, 12:55 PM	#12 (permalink)
SingaporeR34 GTR Register Member Join Date: May 2002 Location: Singapore Posts: 38	Main bearing set Yes please if you can find out which set he uses for his "track type" setup (as opposed to Drag racing) Thanks Singapore34

23rd November 2002, 01:03 PM	#13 (permalink)
DCD GTR Register Member Join Date: Jun 2001 Location: Tokyo Posts: 9,336	SingaporeR34....just to add to the list...HKS also make an oil pump for the RB26.

23rd November 2002, 01:45 PM	#14 (permalink)
SingaporeR34 GTR Register Member Join Date: May 2002 Location: Singapore Posts: 38	Oil Pump Thanks for the help. Regards SingaporeR34

23rd November 2002, 02:18 PM	#15 (permalink)
DCD GTR Register Member Join Date: Jun 2001 Location: Tokyo Posts: 9,336	Here is a vid of SingaporeR34 at Sepang circuit: (right click & save as) Download me

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