400 whp on N/A VQ possible?

BGTV8

Omega Tech dry-sump:

Balancer with crank trigger wheel, trigger sensor and mount for ignition (if you don't use the OEM crank trigger setup), oil pump drive adaptor / pulley, 4 stage oil pump with 38T pulley and shields and bracket and the billet sump was quoted (list) at AU$5943.30 including 10% GST. The Aussie-$ is currently worth about 72 cents US, so figure on $4300 US.

On top of this you will need an oil tank (check out the Petersen web-site Peterson Fluid Systems : Oil Tanks ) and plumbing. Each dash-10 or dash-12 AN connector will be ~$50 each (probably cheaper in the USA - check your local suppliers of motorsport fittings) and you will need close on 20 of them (3 scavenge lines from the sump to scavenge stages in the pump, scavenge return line to tank, supply line from tank to pressure stage input, pressure stage to filter, filter to block, lines to/from cooler is 18 fittings and I'm sure I have forgotten something). I will be using -12 rather than -10, but I also have a supply of spares in stock and will not have to purchase many of these.

I have ordered the billet pan, pump and pump bracket @ a discounted price as we are helping out with the prototype.

The damper and oil pump drive adaptor/pulley will be ordered when we are about to do final engine assembly as they are ex-stock.

Note that I am the test pilot for this kit and the billet sump is in the CNC now and I expect to have it before the end of August.

The only thing you will need in the heads is upgraded valve springs and a retainer kit, which you can get from JWT (their part number A3503-SPRNG). The jury is out on valves right now .... whether I go with Ferrea or another supplier is still a discussion item with my engine builder.

Omega Tech balancers and sump/pump systems can be found on the web at :| Ross Performance Engine Parts - Metal Jacket - ROSS Tuffbond Harmonic Balancers - Crankshaft Damper - ROSS Performance Parts |:

RB

Elmo370z

Awesome thanks man. I talked to ferrea, they told me the 350z valvetrain is the same as the 370z which isn't true. I tried to talk to them about a custom set, but they didn't want to hear so i just left them alone and will try to find another source

Elmo370z

Location of the sump? Would the only option, be pouring it in the truck area? There is no room unset the hood, i don't want to cut the car up to try and make it fit.

Chuck33079

If you moved the battery to the trunk, could you make it fit?

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BGTV8

I don't think there will be sufficient depth.

Since mine is a race car, I will cut a circular hole under the battery tray and drop the tank down thru it and run plumbing into the passenger foot well.

You could do what 1Slow370Z did and mount at the rear under the hatch as an alternative

Elmo370z

I thought the battery route as well, but i dont know about cutting into my car. Guess the only route would be 1slowz route. Damn z cars with no hood room

phunk

My last few conversations with the experienced fellows at JWT left me deciding that I would not spin the stock crankshaft much higher than stock for long at all. Maybe like 7800rpm here and there, but not often. At 8000 and up its going to develop small fractures until failure.

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Elmo370z

That's what i was worried about, though i would only be pushing 7800-8000 once it was ready for track, and that would be only once or twice a year.

Elmo370z

I just visited jwt, i don't see anything b on the website for vvel valvetrain upgrade.

BGTV8

Matches my feedback as well ........ which I why I have ordered a steel crank - it is not cheap BUT well worth it ...

jchammond

It appears that there are quite a few options for up-grading our ~Z's~
either leaving it N/A and add some bolt ons & a tune (Premium Parts) and get between
320-340ish hp. & 270-300tq...(ballpark numbers) & that could easily set you back 5-6k
w/headers,exhaust,CAI,intake & Tune....probably get away with leaving tranny stock;Aoto or Man.
Or get out the Big $$$$$ or plastic,and force induce that sucker,build that tranny up,use premium parts for durability & get 500/600hp. & 400/600tq. pending on tune-for about $15-20k+++
i haven't read all of the comments;but my budget says to just stay N/A for now....2 more years on my house payment & then we may venture out.
lot's of good imfo out here;i'm taking notes.
Have a nice day!

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BGTV8

Elmo, sorry if I was not clear ........ in terms of valve-train upgrade and JWT, I was referring only to spring package upgrade to support the JUN cams you have mentioned. JUN cams will have to be sourced from a JUN supplier.

If you want to look a valves etc, check the Brian Crower site - they do a single spring package but I personally would not use a single spring package in my engine.

RB

Elmo370z

I already been in talks with David from Brian Crower and even had help from a car club member that gave me specs for hr vs vqhr valvetrain and he got back to me yesterday not being able to help with a dual spring or beehive set up. I have the jun cam sourced out, and even tried to email jun himself to see what kind of valvetrain set he would use our if in could source one out of Japan. Also i talked to kyle from ipp and he said he doesn't know of anyone that makes a upgraded valvetrain kit. Only company that I've seen was GTM.

Elmo370z

Well another hiccup but some good came out of this email.

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Elmo370z

At least from this email it gives hope for people wanting to Na and make power. An intake manifold not from a likeable source from forum members on here but an gtr conversion is in the works.