Why not to build a Z32 (Page 1 of 2)

Z32 as in 300zx?

We wish we could get 45 psig when the car is going straight, but at least the pressure is steady.

http://www.crank-scrapers.com/Datsun-Nissan.html

I've looked into this for our BMW because certain turns cause the same issue. Several Spec E30 guys swear by these.

welcome to the club.......Porsche 924-944-928's also are well known to starve out in corners....  There must be some type of baffle you can install to make things better.....since there are plenty of Z's that race and live?

We run the same VG30DE in our 95 J30 with the stock temp gauge and oil light.
The only thing noticed (in our second race)was the PCV issue, if there is time before the PBIR race I will get a gauge to see whats going on.

I never had the intake off let alone looked at our motor from that angle, I do have the car on the lift right now, I will give it a looksie.

We raced hard with  Schumacher Taxi at Sebring and consumed 2-2.5 qts of oil each fuel stop(1:40)... We had no Z32 helpers to warn us about the PCV , only after the race did a member of team Blacksheep mention the known PCV issues may be our problem, so it was researched and I came up with a reroute that hopefully works at PBIR, if it does I will post it on the Z32 forums with pics.

Even with 2 qts down the factory oil light never flickered and until now I was blissfully unaware of right hand starvation issues, I will run the car 1 qt overfill with crossed fingers.
I did suspect we had added lower end wear as the engine has a brief and gentle cold start rattle it never had before but had attributed it to running it low every stint.

I'm no expert, but I thought crank scrapers were more to prevent power loss than to maintain oil pressure?  IOW, a crank scraper isn't designed to really act as a baffle, though I'm sure it couldn't hurt.

Our car ('89 Prelude) has starvation issues (so we are told) in long left handers, but since CMP only has one short left, we haven't had any issues. 

When we built the car we added a DIY baffle using a cardboard template and some scrap sheet metal so I guess we'll see how well it works with PBIR's long right handers.

E30 BMW scrapers often include a baffle to keep oil from climbing up the side of the block.

Other crank scrapers work by removing oil from the windage cloud and returning it to the sump. This should lessen oil starvation.

Team Infinniti, our car is, uh, light Quite a bit under 3,000 lbs, although I wouldn't expect any normal Z32 build to be as light as ours. It may get a zillion penalty laps, but you'll see it at PBIR.

Dry Sump system... that's within budget right?

Heh, well its an awfully big investment in time and money to show up with a setup you know is going to explode in short order. I'd rather take some penalty laps and keep the Accusump.

PBIR has a seven-ish second right-hand carousel.

Team Infinniti,

What is your tire setup and camber?

With cut springs on the Z, it doesn't get much body roll. They come with pretty beefy sway bars stock, and it ended up around -2 camber. With a 2,500 lb dry weight, it makes a lot of grip; more than some proper race cars. It could make more if we'd done anything to make camber adjustable, but we've run out of time. I expect it won't make quite as much on V12 Evos as it did on Star Specs, of course.

A pre-theme pic:

You should be able to replicate the starvation on the street pretty easily. Our car isn't street legal, but we take it out around the shop where its stored without any issue. Its hard to replicate left-hand starvation there, but right-hand stuff is easy.

Cool.

One of our team members is a professional fabricator, and he had us replace the standard Autometer oil pressure gauge line with a -4 AN. He says this makes it react much more quickly, allowing you to see quicker pressure movements.

When I get home I'll upload a video of our testing without the Accusump. With YouTube's 1080p compression you can make out the needle on the gauge.

The Z has adjustable camber in the rear, so we were able to get what seems to be plenty. The front could use some more, but it wasn't worth messing with.