knightmelodic

Okay. The engine has been rebuilt with high dome pistons bringing psi to 190-200. Headers, full exhaust. CAI. Underdrive pulley. Heads ported and polished with HD bolts and gaskets. So it's cam time. Now, Jim Wolf has some with .460 lift!!!!!! Too high. Then some with .430 which is still high but drivable. Two questions: any other cam dealers out there? And what is the lift on stock cams. Thanks.

pmohr

iTrader: (26)

Are you running a VQ35 or VQ30? You haven't filled in your information in your profile. This question would be best placed in AM, most of the regulars in the general forum aren't too keen on cams.

Puppetmaster

iTrader: (48)

Moved to All Motor. Some cam specs and discussion is here:

http://forums.maxima.org/all-motor/5...me-decide.html

knightmelodic

Thanks for the moving this thread. Some more info. The car is a 2003 6sd man with LSD. Short throw mod too. It's pretty hot right now (ask the gold max I toasted on the Taconic the other day) but misses below 1600 rpm. I know I need a remap for that, so I figured what the hell? Gotta be dynoed to be tuned might as well drop in some cams. It was mapped a few years ago by technosquare. Oh yeah, springs and struts drop it by 2 inches and tighten the ride along with anti-sway in the rear and strut brace in the front. Also sub-frame bushings and motor mounts from cattman kill that wheel hop.

pmohr

iTrader: (26)

Just throwing this out there, I hope you understand just how much labor goes into 'throwing in' a set of cams in the VQ. You just have boltons, so I don't know if you're aware of that or not.

knightmelodic

Yep, I do. That's why I'll let my speed guys do it. Actually, the hardest part is getting the timing and cam chain cover off. They have dyno and ECM tuner to advance timing etc. Also, my engine was balanced during the rebuild so should be good to go. I'm just looking for something like .414 or so, so I'll have WHP increase from bottom to top.

nismology

iTrader: (8)

Cam lift itself means nothing without knowing what the other specs are.



And there are a handful of other manufacturers that produce cams for the VQ35. Tomei, JUN, Nismo, Brian Crower, HKS, and GT Motorsports come to mind.

knightmelodic

Wudduya need to know for cams? Comp is 10.7. Psi is 190-205. Lift and duration are what cams are all about.

Anyway thanx for the suggested sources. Those crowers look good. Anyone had experience with them?

pmohr

iTrader: (26)

FWIW, you mentioned lift but didn't say a thing about duration, and there's a bit more to cams than just those two.

nismology

iTrader: (8)

+1

Duration @ .050"/ramp rates and LSA are much more important than max lift or advertised duration. Area under the lift curve and valve event timing makes all the difference.

knightmelodic

True. But not really for PnP's.

knightmelodic

Just had it dynoed and it's being strangled by the stock cams. Torque is a straight line. HP climbs and levels. It's very happy @ 6k+. But every pull you could tell the motor wanted to do more. So, I think I'll drop in the crower 2s and remap the ECM. With the other mods the tuner was talking possible 30 @ the wheels. We'll see.

Blackmax1924

iTrader: (7)

picture doesnt work for me curious what it is???

MDeezy

iTrader: (27)

subscribing

knightmelodic

Dyno sheet. Funny, it shows up on prview post, my post and your quote.

soseihin

iTrader: (7)

For you. I DLed your file and am hosting it elsewhere.

t3h dyno

knightmelodic

You are right my friend. Why I didn't use a photo host I don't know. But it's up now. Thanks for your help.

crazthe1nonly

iTrader: (3)

for all that motor work and ur only pushing 230 TTW's omg u need to slap whoever build that motor

coinage

iTrader: (10)

Jesus thats lean as hell!!!

nismology

iTrader: (8)

There are a few things that you can do for power without opening up the motor. You have definitely not maximized your current setup.

MDeezy

iTrader: (27)

thats very lean, even for a stock car! Was there a wideband or sniffer after the cat (if there is one). I would seriously hope so and your not running the car hard with ratios like that.

knightmelodic

LOL. No, the re-build is fine. I have 2% leakage on my vavles, which is sick. 190-195 psi in the cylinders. Balance is a dream. It's something else.

knightmelodic

Well, I'll be dropping some of those Brian Crower cams in and adding an Apexii 2. But before I do any of that, what would you suggest? BTW, the ECM goes back to TS with the dyno sheet next weekend.