Hi rpm oil starvation

BGTV8

This is why the Grand Am race teams went dry sump - the NISMO oil pumps gears are just a better steel - they just tolerate the harmonics for longer, but are still subject to failure under sustained rpm >8500. The only place for definitive information will be Doran Racing or NISMO Japan and the key is getting the information - they are usually reluctant to provide information to other than race teams.

This is not a "road-user" issue, but a "race" issue. Since my engine is ultimately destined for a race series where 1-hour and 3-hour races are the norm, I am vitally interested in oil pump reliability and I am happy to contemplate dry-sump from the get-go as a consequence.

Ross Performance in Albury, NSW (see here :| Ross Performance Engine Parts - Metal Jacket - ROSS Tuffbond Harmonic Balancers - Crankshaft Damper - ROSS Performance Parts |: and follow links for dry-sump/oil pump drives) are working on an external oil pump (Gilmer belt drive) for the VQ/HR as well as an "affordable" dry-sump kit (by comparison to the Dailey Engineering "gold-standard" - it won't be "cheap").

phunk

I would be happy with 8200 or so regular use.

I have played a lot with the idea of getting a GT-R oil pump in here, even bought the pump... But it would require quite a bit of custom work and I am not sure I have the time for it. If the NISMO pump is good for 8200 I am all over it and that is good enough for a powerhouse straight-line engine. Otherwise I dont think I would take a stock pump past 7800.

__________________

FL 4Motion

My whole reasoning for wanting to get the nismo oil pump is b/c i want to build a moderate n/a car with all available mods along with a raised redline of 7800 -7900 rpm and have it be reliable as if stock. Were i wanting 8k rpm +, i would be looking into dry sump but honestly, for a noncompetitive track car, its just not worth it so nismo oil pump, baffled pan (eventually) or worst case spacer and just under 8k rpm limit and try to max out power with those constraints.

Btw, last nismo was tracked reg for 3 years with a 7900rpm redline, stock oil pump no issues.

jrb55gh

Any more thoughts on when you might have a production oil pan available?

phunk

I am going to order some billet material for other production today or tomorrow. I just ran out under my Z and measured 14x8x2.5 would be large enough to just barely stay above the crossmember. I will get some bricks on the way for it. Maybe try and push through a quick batch of 7-8 and see how it goes.

__________________

jwick

If you are measuring the cross member clearance, would I be wrong in assuming that it will increase oil capacity or does the active baffle system eliminate the increased depth?

__________________
'10 G37T 6MT Graphite/Graphite - BP - G37T Build

phunk

I dont have a stock pan anymore to measure its depth, but I doubt it goes down 2.5"... so we would be increasing capacity a little bit I believe. The baffle system will no-doubt consume some of the added volume.

__________________

Rusty

Do you need mine for a mock up?

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

phunk

Well... if you arent using the car it sure wouldnt hurt. But I would never ask you to make the car immobile if its otherwise all together and running! I might be able to find some more detailed pictures with what I am looking for. I remember there being a lot of posts about that pan back when it came out.

__________________

Rusty

I still have my stock pan and spacer to use.

On another note. The AM Perf oil pan uses a modded stock pick-up tube. It's cut and rewelded at a different angle.

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

phunk

thats odd about the pickup tube... i dont see any reason to change that. I know guys have to change it to use with the ATI damper with the dry sumps I think, but just for that lower pan its not really in the way at all.

__________________

Rusty

The way it's angled to go through the top of the baffle.

Attached Images

011.JPG (413.6 KB, 50 views)

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

phunk

might have been an afterthought? we can easily just leave a pass through for it.

__________________

jrb55gh

Here is a link to a thread that has pictures of pan depth measurements:

GTM Performance Engineering: High Capacity Oil Pan w/oil baffling system (8qts)

phunk

Here is the original AM Performance thread.

A.M. Performance Extra Capacity Baffled Racing Oil Pans

I can see how their baffles are constructed. I have glanced around trying to find the doors/flaps in my supply catalogs but havent found anything yet. Might have to make the flaps. It looks like they might have. They appear to be aluminum. Wouldnt be too big of a deal to make them but to find them for $5 each in a catalog sure would be nice.

__________________