Here are some numbers from my cars for your benefit when I had similar breather bolt ons and tune done to it.

base 209.7/183.5
exhaust 224.3/199.0 (gains 14.6/15.5)
exhaust + intake 234.5/203.0 (gains 10.2/4.0)
tune 248.0/215.5 (gains 13.5/12.5)

I would agree to this, if you plan to add cams then might as well do it all together and save a few hundred bucks of tuning time. In hindsight if i knew i would have done all of this to my car then I would have done so. I started out thinking that I would just get a spacer, but look at where I'm at now... Even this thread started out as just a simple two mods, but it is slowly migrating to a pretty involved upgrade. The good thing about doing it step by step, is that you learn and it keeps it fun. If you do it all at once it kind of kills the fun.

 

So would you say to wait on the tune and dyno? I mean i wont be doing the Cams till next year or so the gears am getting everything together hopefully in the next 2 months or so. Let's say i do the tune and dyno with my stock gears and then i change the pumpkin and gears to the 3.7 FD would i have to go back and do it again?

 

any vid updates??? I wanna hear

 

I was only back in the states for a short period of time and got the one on page 7, I'll have to get some drive by and such for you guys. I saw that post you had about your new exhaust, man that thing is freakish loud. How's the noise inside?

https://my350z.com/forum/7642666-post140.html

In that case you might as well just get the tune done now and enjoy your upgrades more. Really if you do the tune all at once you are probably only saving at most $500 in tuning and dyno cost. The new pumpkin won't affect your tune at all so before or after is fine.

 

Greatttt!! am gonna try to do the tune this week and get it over with so i can finish and let the car be for a bit since i spent plenty of cash already in the past few months about 3K ouch!! anyways i just bought a pumpkin from a 05 manual Z complete with vlsd and all for 200 bucks!! now all i need is the gears.

 

Gabe,

I inquired about getting 264 Tomei cams installed and received this message from Function Tuned:

"Cams are about $1200 to install. Many times we recommend that a set of springs are installed at the same time. That adds about $395 and labor. There are a few options for springs from JWT and Ferrea."

I thought the 264s were compatible with stock components. That's the biggest reason why I'm buying them instead of any 264+

If I have to buy springs then I might as well buy the 272 CAMs.

Any insight?

 

They obviously don't sound like they know what they are talking about.

The Tomei website states that the 264's are compatible with the stock valve springs. (only cams with lift greater than 11mm require new valve springs, these are only 10.5)

http://www.tomei-p.co.jp/_2003web-ca...82_cam_VG.html

 

Didn't they use the word "recommend" in reference to upgrading the springs. Do it while its apart you will thank yourself later, personally I would have revup or arp rod bolts installed at the same time because the front cover is already off and its just dropping the pan. Cams are expensive to do on these cars.

 

They've been tuning Z's for a while now. They know what they're talking about.
http://www.functiontuned.com/

I should clarify, if I should buy spring now (because in the long run it's better with aftermarket CAMs) then I might as well go with the 272.

On the other hand, if my springs can last me 3-4 years then I'm good.

1cocky,

I doubt I go further than CAMs (and springs). This is my daily after all.

 

Yeah you can use the stock springs. Talking to tomei and doing some researchn, if all you plan to do is stick with a moderate build then the stock ones are plenty good for the 264.

By the way I may have mine for sale shortly, since I am planning for a stroker kit.

 

Simmer down.........reading compreshension>you. I think it is perfectly reasonable to recommend springs, etc. Word of advice to Bigalow. Buy your own parts and bring them with you. Dave is an install/tuning shop only he doesn't get deals on parts.

If you plan on sticking with 264's and keeping the redline within reason you don't have to upgrade valvetrain.

 

Just so that you can have some numbers in your head. The stock springs can handle 7300 no problem.

 

Thanks all.

Gabe,

Adam from Z1 is still waiting on me to make a purchase but I'll be out of town starting next week.

When do you think you'll decide to sell them? I'll buy them from you.

 

What do you have planned Gabe?

 

 

264's work fine with stock springs if you plan on staying near the stock rev limiter. Not sure what the actual limit is on the factory springs, but I ran my car, on stock cams, for several years on stock springs up to 7100 or 7200 redline, without incident. If you want to do them just because but want to keep pricing down, you can do the HR springs as well. They would be more than enough for your stock bottom end rev limiter. I'm not running anything special as far as springs (just NISMO's, with stock retainers and valves), simply because my cam didn't dictate it, and the machinist said they would easily be ok to 9000 rpm. The BC springs are also affordable too, and the Tomei's just dropped their MSRP on the springs by a ton (MSRP now is $360, from $510, and if I had to guess, I'd bet they are nearly the same, if not the same, as the NISMO ones)

 

+1, I have been pushing 7000-7100 for a few months now (certainly not a long time, but none the less) without issue.

 

yep - I ran that way from fall 2003, when I first had the ecu flashed, till summer 2007 when my new motor went in. I'd say around 40k miles in that time

 

I am planning out the whole enchilada... maybe. From head to engine work with a stroker kit and due to the larger displacement I will have to get larger cams.

 

How many miles do you have on you car?

Valve springs don't last forever.

You might be better off replacing the springs if you plan on turning the engine a lot. If you're replacing them, you might as well go with what is recommended for the cams you buy.


-jb