Okay, I maybe able to get my hands on a set of 04 350z heads with head work done for a decent price. I just wanted to verified that it'll fit fine on my 02 3.5. This may be a dumb question but its late and I can't seem to think straight, I think it will work since its not from the revup motor which are 05+. Correct me if I'm wrong. Thanx

 

They should bolt right up. Put some ARP head studs while you are doing it.

 

thanx. Yea ARP main, head and rod bolts are in the plan.
Anyone else?

 

Yes they'll fit fine.


BTW, you should get a 350Z head gasket. They have 3 layers as opposed to 2 in the FWD VQ's.

 

I'll be getting the HKS HG over the Cometic, its a better design.

 

How about some JWT valvesprings in your heads? I have those springs in my swap, couldn't feel the results, but psych's differently driving at high bands.

 

If I do get this head, it already has the following:
04 heads with jwt springs, valves, retainers, and shims. Pocket ported, decked and 5 angle valve job.

Well here is what the plan is for the moment:
Arias 8.5:1 Forged Pistons (oversized 96mm)
Eagle Rods (havent decided on stock or nismo rod bearings)
Bottom end will be balanced with at least the pulley if not with the flywheel also
ARP: Rod/Main/Head bolt
HKS Head gasket
JWT C2 Cams with JWT springs/shim and cam spacer
REVup Oil pump
PF TB and adapter
Some minor head work (3 angle valve job and mild p&p) if I don't get the head.
Modified IM (SSIM style)
J&S (already have)with EU
Tranny work

I know there are better pistons out there and probably better things but I just want to get a decent build(engine) and not spend more than 5k which from my calculations is about how much this is gonna cost me.

If you guys have any suggestions, please feel free to share. Its gonna be a winter project and I dont plan to have it running til at least March but I figure if I'm gonna do it, I may as well take my time and go easy on the wallet

 

I wouldn't bother with the JWT valvetrain.

Check these out

http://www.z1auto.com/prodmore.asp?m...ne&prodid=1718

These will work with either VQ30 or VQ35 heads. Double valve springs FTW. Fearra and NISMO also makes a kit but theirs cost more.

Also I dont think its possible to do a 5 way valve job on VQ35 heads, Cosworth sells reworked VQ35 heads and they could only do a 4 angle intake and 3 angle exhaust.

http://www.cosworth.com/shop_item.php?productid=442

 

whats J&S? if youre getting 8.5:1 bottom end i hope you plan to FI it, otherwise youll probly see a decent power loss

 

Thanx. I'll look into that. Do you think the stock retainer will work with dual valve spring? Would I still need the shims to work with the JWT C2 cams (especially when they are required)? $520 might be out of my budget but the springs look promising.

The Nismo ones aren't bad either at $279.

 

I'm already boosted see sig.

 

J&S is a safeguard for boosted motors. It retards timing when detonation occurs. It does some other things but i can't remember. Jcy98maxse was telling me about it but i forgot.

 

technically your not right now....since your car doesn't work

 

Hmm, it works fine. My car see more boost than yours does

 

If by boost you mean gheyness then yes it does....between you and peter it sees alot of that

 

Edited for correction. Its not for just boosted cars, its for any car that pushes its engine to its limits. Its basically a knock monitor, it can either retard timing per cylinder or all cylinders. Its a engine saver and should be used for anyone pushing hard on their car (IHMO). more info found here:
www.jandssafeguard.com

 

dont hate just cause your bimmer has no boost. And you cant launch it for the life of you

 

stfu....im working on it bish

 

That quirky 540 DBW system doesn't help either, i'm sure.

 

The stock retainers will not work with these double coil springs. You would have to buy their springs, retainers, and seats for it to work IIRC. The retainers are Ti so that's a plus. Also keep in mind this valvetrain is good for over 8K RPM so it maybe overkill for your application. IIRC the Ferrera kit which is similar to this kit is rumored to go past 10K RPM.

You would have to reshim, even if you were not doing a valvetrain build up you should still check & adjust the valvetrain regardless of what cams you run.

 

yeah, i saw that but didnt know as i figured you were 3.5 swappin not just using the heads. well then yeah thats a great idea, run with it and show us awesome results.

Edit: im confused, are you going 3.5 or not? or maybe just 3.5 internals in a 3.0?

 

Technically it's you're or you are, but not your.

 

sorry for the confusion. I'm doing a full 3.5 swap with 3.0 timing equipment with my boost setup.

 

Ben should be the new sales asst. for J&S I have a feeling he would do very well.

BTW justin. Your getting CP pistons.

 

 

and teh ghey CDV (clutch delay valve) that tries to predict with what force im going to push the clutch in.

 

I believe the 04+ maxima heads are the same part# as the 350z heads. The cams are different of course.

 

How did your 3.5 swap go?

 

Good, there's a few little things I still need to fix. I need to reregister my car and pass emissions. I need to hook up the EGR, EVAP, and a rpm switch for the VI. Without the rpm switch, it runs like a MF from 4500-6000rpm but is a little tame below 4500rpm.

The thing even breaks loose the tires going into 3rd gear.

I need to get some damn time to work on these little things. Right now, I borrow the license plate from my beater 95 maxima with 200k miles when I want to take it for a drive.

 

If I remember right I think you did the conversion on the drive by wire TB, if so I may need your help with the conversion if you dont mind.

 

I can take a picture of it if you'd like.

 

DAMN, what head swap can us 3.0 guys get?

 

motor swap is the way to play. Unless you get a supercharger, but thats not to my liking. I'm planning on doing the 3.5 swap in my 2k hopefully by next summer. You can do port n polish if you want....