The motor has 12:1 Wossner pistons, Wossner forged rods, Tomei 280 cams, Ferrea valves/springs, head work, Greddy Oil Pan, etc. Crank was lightened and balanced with along with the OSG flywheel. Goal is for 400rwhp and 10K rpms.

 

So did they do any r&d on VQ merge collector whats worked and what hasnt? What was the bill

 

This is an HR motor right?

 

This was not a production-based build. It is complete one-off, custom. It would have been nearly double the price to have the jigs manufactured for the whole system. The way the set-up is now, you'd have to buy the whole system--headers to tailpipe--and the price would be in the $2,500.00 to $3,000.00 range, and ROI would require the sale of 20 (maybe fewer) units. I spoke with a few vendors, and we all agreed that the demand for LTH on the 350Z is certainly high, but not at that price point. It simply was not going to be economically feasible.

I'm sure Kooks would be willing to build a set of headers for someone for less than it cost me since they now have a design template in place.

No more pictures at this point. The guys at Kooks are supposed to send me a vid of the exhaust on start-up and revving, but we'll see. At the very least I will post vids and pictures when I get it home.

 

I don't know. $5k.

 

Yes.

 

You should post a build thread

 

can't wait to hear this

 

Jesus, $5k?? Why? You could have easily bought a set of PPE long tubes and any exhaust you wanted for less than $5k.

 

Better yet SG LTHs and any exhaust you want

 

Dry sump?

 

I looked into the PPE LTH with available mix-and-match exhaust options, and decided I would go with Kooks. Although the motor build is certainly not considered a "no expense spared" endeavor, it is certainly a top-quality build, and I wanted to extract the most out of the engine and set-up as a whole. After speaking with my engine builder and parts guy it was decided that the PPE + x exhaust system would "work", but might not be optimal. I initially sent the car to Kooks with just a set of headers in mind, but after looking at the car and the setup I had (HKS), Kooks told me they could "make it work" with the HKS cat-back, but I would be leaving horsepower on the table and some sacrifices would have to be made. The car is at Kooks because I wanted the best. Budget, as far as the exhaust was concerned, was not an issue. I knew it was not going to be a "cheap" proposition, so I green-lit the full exhaust.

Could it have been less expensive? Sure. However, given my goals with this setup (400rwhp), I didn't want to sacrifice. I am pleased with the setup, and now have the only Kooks-equipped HR 350Z (far as I know). Bragging rights, although not paramount when considering a build, a great if you can get them.

The ultimate goal is to have a fun, fast, reliable, street/track-day car. The car will have a full interior, a/c, and a nice stereo. I am sure the sound of the exhaust will be road-trip-prohibitive, but that's what ear plugs are for, I suppose.

The only items left to purchase are: a radiator, injectors, oil cooler, and a fuel pump. I go back and forth on the suspension. The car is already pretty harsh in stock form, and to get real and substantial improvement at the track I feel a remote reservoir system (a la Penske/Ohlins) would be a necessity. However, I don't want to turn the car into a track-only-trailer-queen with a ride quality that will rattle one's fillings out. Also, at $1000 per corner, the price makes entry prohibitive, considering I only do a handful of track-days per year. For my track-fix, I prefer my Duc.

My $.02.

 

Nope.

 

Do you have any track or race exp? Kinda seems your a dreamer but you have funds. Idk I kinda feel weird about this. Like hearing your sister get nailed. But anyways 400hp.......

 

Yes. And to address your "dreamer" comment: I suppose everyone is entitled to his or her own opinion, but making a judgment call based on a handful of posts on an anonymous message board is your prerogative. We're all "dreamers" to a certain extent. However, some of us are also "doers".

 

That looks sick. What type of headers are those? I know you said SS but I'm not sure what you mean by that.

 

SS = Stainless Steel

 

Thanks for the info - sounds like a nice build With the goals you have, the divorced exhaust (for peak power) makes some sense now. But no way will you be able to make useable power up to 10K rpm with those off the shelf cams - 8500 would likely be a more realistic target with those Tomei 280's. You would need cams with A LOT more duration & lift to make solid power past 8500rpm. And even then, I wouldn't even bother trying to rev past 9k rpm...as it becomes incredibly expensive to build and maintain such a motor properly.

And to reach 400rwhp you'll certainly need an intake manfiold to support such flow, and MUCH larger throttle bodies to match. Jenvey individual throttle bodies would be good, or the Doran Racing intake manifold (not ETA or exact info though) that is currently in the works.

Not at all trying to crash your party, just giving a more realistic outlook

With a high quality set of dampers, the ride quality won't suffer much over stock. In fact, if you ran a mild spring rate with a nice set of dampers, the ride quality could even be considered better than stock (more firm and controlled). The Ohlins DFV's (~ $3300) are a pretty good set-up if you're not trying to get too carried away with your check book.

lol. At least he has the money to back up his ideas and doesn't mind going down avenues less travelled (which is good for the community when you get down to it). A lot of the community is in such a "stuck in the box" way of thinking, it's always a pleasant suprise for me to see such builds as this...even if the goals are a bit questionable.

 

Im all for pioneers and out of the box builds. I like unique. I hate volks and nismo body kits lol. C what I did there? Truth. Just seems this guy said idc how much do it and from what I can tell it will he diff but no pioneer.

 

+1 on this !



To OP,
You should look to what SG did with their VQ that has the C10 / C9 which are much more aggressive than your 280 cams.
with ITB with an awesome exhaust setup after R&D they managed to get 372whp reving up to 8500-8800rpm
Those heads were flow tested Vs the HR head and they were extremely close ! even better at some area.

poping up the intake manifold to free air , they went up to 360...
then with that 90mm Throttle body ((which has more flow that the Twin Throttle body the HR has)) there were around 345-350whp

I doubt very much you will be getting power pass 8200rpms.


He is actualy building an HR with the C11 & Rz1 cams *JWT* which will be an 400+hp setup !
Im doing the HR/VHR long rod engine with the same cams setup but 0.5:1 more compression. Parts will be on order in about 6 weeks.


but I wish you good luck with your built , I will be following it
I haven't seen much guys doing an HR built , its always interesting to see what can come up from this !