Machupo:
dose the car run fine with your ecu set up, no hick up's. your idle has been raised, can this be done by the workshop or dose an authorized Nissan dealer have to do it
cheers, thanks for the help.

 

would the nismo spec1 cams be a better choice?

 

350ZLO:

Nismo spec1 cams will still put you into the same situation as Spec2 cams... just like my current setup... I am running nismo spec1 cams with nismo VTC pulley... and I have to get motec to get those working all together... and if a stand alone system is not within your consideration, it will be better for you to go for other milder cams instead... Also with motec, you need a good tuner to get it idles smoothly... I was using motec drive by wire system and the idle was quite lumpy even when we set the idle at 1000rpm... and right now, I am running with standard drive by wire with motec system (plug and play) and it gets a lot better even at 800rpm, but you will still have idle hunts when the engine is cold.... Therefore, with spec 1/2 cams, you need a good engine management and higher angle pulley to support those cams and most importantly, you need a good tuner to get it tuned up for normal day driving!

cheers,

richie

 

yup, no problems with the stock ECU tuning... the only folks I know of that can change the idle are Technosquare, AAM, and anyone with a Consult II (read: Nissan dealer)... if you go with option #3, make sure you go to a tuner / performance friendly dealer (like crawford / performance nissan) or they won't do it / won't do it right / will cancel your engine warranty, etc.... again, I went with Technosquare

 

well im plannig to get the turbo xs utec and from what i hear from a lot of people jermaine from turbo xs is a really reputable and qualified tuner

 

Cams aren't turbochargers. You have to compare specs, lift, duration, overlap.... etc. You need to really educate yourself on cams before buying. If your going NA tyhen yo0u need a whole package. Cams, aftermarket heads or head work, valve train work, exhaust/headers, intake... you really need to do the whole package to see gains and that's expensive.

Respect
JET

 

ok i know what i have to do when building a car...im not a moron who thinks u can just throw cams into a car and the thing will run mint.....i know about head work and value train workand ll of that...i know u cant half assa vehicle and expect it to run perfectly i was just asking what cams i should go with when building the car to be a daily drivin all motor car that can run well

 

which cams to run depends on a few things

1. where do you want the car to make power?
2. are you doing headwork to compliment the cams or just dropping cams in?
3. what headers are you using?

 

immost likely looking for mid to high end power
down the road a little bit i do plan to do head work for to start the car will just have cams dropped in
ill prolly go with crawford headers

 

is it necessary to change the valve springs with the tomei 268s or will the stock ones work fine

 

if you plan to do headwork at some point, I would skip the cams and headers till you can do the headwork at the same time. Otherwise you will be paying someone 2 x to do the same job

Yes you MUST use aftermarket springs with the Tomei 268's

 

dude... i answered this in post #30, when you asked it the previous time.

Yes.

 

ops sorry. yeah looks like ill be going for the nismo cams, no change of springs or ecu required.

 

Just to clarify, again, because there seams to be some confusion on the Nismo cams sold in the US, like mentioned on a previous post, the US spec "R-Tune" cams are made in the US for Nismo USA by JWT. The Nismo S1 and S2 cams are made in Japan for Nismo Japan and are far more agressive than the US spec cams.

 

so is crawford ever going to release their cams/heads or whatever?

 

My cams, all the other stuff im my sig. Stock internals and heads. 60 whp +/- a few hp increase. About a $6000 N/A upgrade package not including the exhaust and intake that I already had. My idle is like stock.

You're right you do need a package but not neccessarily any head work. But obviously that could be better for sure, just a heck of a lot more dough in labor and/or parts if going all out with heads.

Actually we are probably going to explore the stroker option. We think at least 40 whp more with that. The stoker kit will be worked out by the same guy who worked out the specs for the cams, and they are currently one of a kind. At least for the time being I am not aware that they have been installed in another N/A Z, but their is interest and at least one intent.
But yah, after that the only other major motor place to go hardware wise is the heads. Sounds delicious!

Peace

 

You should check out the cam spec. that Peter (Nathan is his username here) is running, he custom grinded his cams a couple of years ago and running 4.0L now with high compression ratio (nismo spec 2 heads) in Sydney for his race car, he might be able to give you more info on his motor.

cheers,

richie

 

this thread was going somewhere then everyone kept putting in there 2 cents. What do all these people have to prove their right? atleast specify why you know what ur talking about, hows anyonwe supposed to knnow who to beleive?

 

EDIT

 

I have jwt cams with my '05, but I had to follow up with Unichip for a richer fuel mixture. My Z screams like there is no tomorrow....good luck, rich, san jose, ca