Well...I have been told to sleeve the block and wait on doing the headwork till later so I ask you fine people do I leave the heads stock and sleeve the bottom end or do I throw cams in and port-polish..My Engine budget is about 7-8K and I'm looking at 600WHP max forever. I have Turbonetics Stage 1 now so the Max I will prob see if 490WHP with the top end drop off at 5400RMP, until I upgrade to Stage 2 that is.

Thank you much

 

You can't make 490 on the stage 1.

JET

 

I was just guestamating what I thought Cams and headwork would add but yea it prob wont be that much more.

 

If you are staying with the turbonetics kit I would not even worry about sleeving. I wouldnt even worry about sleeving with the stage II kit. I would go for cams and headwork. It seems like the turbonetics kits need this to help get all the power possible. But thats just me....

 

Not true. Get cams and a good tune and you will.

 

Funny you say this without knowing anything about the stage 2 kit. It will most certainly be capable of 600whp.

 

600whp is right on the edge of that gray area between running sleeves and not. With a budget of 7-8k you won't have enough money to build the block, sleeve it, install, upgrade to stage 2 kit, AND buy a clutch that can handle that kind of power. I'd say with that kind of budget, shoot for the highest you can get without sleeves and with whichever clutch you can afford.

It's not the kit that will limit your power output, it's if you can afford to sleeve and afford the drivetrain upgrades to support that kind of power.

 

What is sleeveing the block?

 

I second what Turran said. The limiting factor in getting a reliable 600whp is the amount of money you have to put into the proper supporting mods. Are you doing the labor yourself? Does that $6k include labor? How much money do you have for a clutch, cooling mods, proper EMS system, Axles? Keep in mind that reaching 600whp takes a lot of additional mods to keep the car cool and put the power to the ground.
Just my .02

 

Installing stronger cylinder sleeves.

 

They bore out the existing cylinder walls and stick some iron "Sleeves" into its place.

Their is a really good thread on it where it shows step by step pics of the installs, I will try and find it.

*****EDIT*****
Found the thread, here ya go. https://my350z.com/forum/showthread....ghlight=sleeve

 

build ur engin and worry about sleeving later coz sleeving now with what ever stage u have ur uper block wont take the power if it was stock.

 

I have a ATS Twin Clutch and the Motor money does not include the install.

 

seems to me ur clutch should withstand 600hp easy, but u also have to consider torque, i believe u know that, and if i was in ur place i would sleeve the block, just to be on the safe side.

 

With all the time, money n effort you have in your car. You have a good amount of work done, and still want more. What makes you so sure you'll be happy with 600whp max forever??? Maybe look into saving the extra couple g's and go with a sleeved block and stage 3 heads..

 

If you gots the cash, sleeve it IMO.

 

i'd say with a turbo to just sleeve it and up the boost

the TN's torque can hit pretty hard


you can always get cams put in later, but you won't be able to really go back and sleeve the block without throwing lots of labor money away

 

yeap... twin carbon clutch and axles will not be needed unless you hit it hard constantly or if you track it a lot......

 

Save your money on sleaving it and get proper cams. I have yet to see anyone crack a cylinder wall. While the extra security is nice, I think there are much better ways to spend the money. Besides, I really feel that 600 whp on a TN single is a bit lofty of a goal, unless there is some serious rework of piping.

 

i say forget the sleeves... its too early to say they are needed. in my experience in the field, a sleeved block is NOT extra insurance unless you truely needed, its actually just another factor that could go wrong - which is a bad idea unless you need it for sure.