I've set my goal of attaining a 600 whp Z. I'm interested in your thoughts of how to get there. Assume that I have forged Pauter Rods and 9.0:1 forged Arias Pistons
I plan on adding, at least, the following:
- SGP/ARP Main and Head Studs
- JWT Heavy duty valve springs
- Titanium retainer set
- Tomei cams
- 750cc to 850cc injectors
- port and polish heads
- an after market intake to be named later

I'm mostly interested with the engine and realize that, most likely, I'll also need to upgrade the LSD, as well as add an oil cooler and trans cooler. Thanks in advance.

 

That should definately do it. I am going the same route you are but I will be running 8.5:1 and the full ferrea valve kit.

 

Buy a Supra?

 

Buy a Supra? I probably would have if they made them new. However, I've already spent a considerable amount on after-market parts for my Z and will stick with it. I have much respect for the Supra, but your comment here is a waste of space for those of us serious enough to make the Z an ultimate car.

 

Yancy,

That setup will get you 600 Rwhp easy. The 750cc injectors are good to 700+ Rwhp so they are plenty. To get there you will need a good engine builder and tuner. Hint Hint

Kyle
SGP Racing

 

Kyle, I've visted your web site often and am impressed with what you guys have done for Kudos. To tell you the truth, I've been considering you guys for the job. Just trying to figure out the best and least expensive way to get my car to you guys in Texas. Can you PM me with details on the costs and time needed to do the job? Thanks.

 

Yancy,
I think you have the list nailed, but there is nothing in your list concerning EMS and a fuel system.

I think if you're goal is 600 whp, you should definitely be considering a return fuel system as well as a standalone, to run the fuel. SGP has used the TS flash for 380cc, combined with the e-Manage for fuel. Although this will most likely work, I do not think it is the best solution. Also, consider switching to MAP from a MAF sensor.

 

Hmm with the springs & retainers, would you look at bumping up the rev limit to say... 8k?

 

Yancy, if you intend to keep the rev limit under 7000rpm, then Ti valve retainers and beefy springs may not be necessary. The Ti retainers will wear out much faster than the stockers (Ti is used for lightness...not necessarily for strength) and the higher rate springs put uneeded stress on your cam. If you wanna raise your rev limit...then go for it..and build it up! Just my .02

I really like head mechanicals as is for a street car...with the addition of some porting and polishing, and a 5 angle valve job. If you have the extra cash...I like those Tomei cams too.

Lastly, if your goals is 600whp, I'd chose the 650cc injectors over the 750cc. After talking to RC Engineering, I am going with 650cc's on mine, since my goals is 550-600whp max. A smaller injector that still meets your fuel requirments is the way to go. The car will start, idle, and cruise better...but still deliver the fuel you need....at roughly 50-65psi of fuel pressure.

 

Well...the stock retainers are made from a cast aluminum and are slightly lighter then the Titanium retainers. The advantage to the Titanium retainers on the VQ35 is the fact that they are actually stronger then the stock cast aluminum. On most other motors the retainers are made from steel so the Titanium retainers are not only lighter but also stronger.

Kyle
SGP Racing

 

Kyle, do you still recommend them and the beefier spring if I dont intend to raise the rev limit?

 

don't forget about upgrading your clutch, and possibly your LSD

 

What would be the difference with the Tomei cams and the JWT cams?

 

curious what would it all of this cost?

 

Probably close to 9k in parts/P&P work... I'd definately be interested to see what kinda gains the P&P would bring. Anyone know what the stock heads rated flow rate is? If I had a vacuum and engine apart, I'd check it lol.

 

some of the Tomei cams need springs and retainers...its not optional, it's mandatory (on the 264 and 268's). problem is, Tomei does not offer either part

 

Are these special sizes in regards to the tomei cams or can it be any aftermarket spring and retainer as long as it is stronger than stock?

 

Really? Who told you that?

How many Tomei cam installs have you done?

I can tell you from experience that is a completely false statement. They do not need springs and/or retainers. Springs and retainers will help for people who want to up their rev limit but it is not required.

Kyle
SGP Racing