posting to keep the Kinetix post from going so far off topic...

ok.. so I'm a little confused.. I've seen people say the G/Z cams are identical to ours (at least in the non rev up engines) ... but then in that link it says the 2005 Z has more lift and more duration.. is that referring to the rev up engine? because I've seen 2005 Z engines that aren't rev up's also..

 

I think it's the 287HP versus the 300HP, or the 306HP now?

 

Maxima 3.5 cams = non-revup 350Z cams.



/thread

 

It's gonna torque-steer like a ****... as if it wasn't bad enough already.

 

....if/when...?

 

Oh I didn't realize it was still vaporware at this point.... so nobody's done it? Really?

 

In '05, the Z came with the rev-up engine for the 6-speeds and the MREV for the autos...so the MREV cams will fit, rev-ups won't (without minor modification as noted by IceY2k1)

 

Done what? I'm still not sure what you're asking? Are you asking if someone has put the rev-up cams in a FWD VQ35? If not, the 287HP Z engine has the same exact cams as yours so....

 

so the 2005 Z specs from the link up top is for the rev-up engines, since it has different specs from ours, correct?

 

I guess I don't even know. I always thought the the non rev-up had a different cam, but I guess the extra 22hp is due to intake/exhaust. My torque-steer comment was re: 306hp in a FWD, or even 287hp for that matter.

 

and in that case, are there any stock cams that would make a decent upgrade for our cars? or are we stuck with $1000+ for any kind of cam upgrades?

 

You could go ebay cams, half the price. Around two dozens users with no failures. Supposedly ground from the same cores as nissan/jwt etc...

 

Agreed. Ill go this route I think. Waiting for a bit of a price drop. Also Ill probably install cams, headers and light flywheel all at once. Im contemplating pulling the motor to make these jobs much easier, rather than fighting all three with the motor still in the car.

 

I'd leave cams for when I'm at a dead stop/plateau in tuning/bolt ons.

 

I'm right behind ya Deus.. sounds a lot like my plan.

 

I meant to also comment - why in the h*ll would anyone get OEM cams????? if ur gonna get cams, get performance cams . . .sheeeesh.

 

check the www.my350z.com forums. there was a set of JWT non rev-up cams for sale brand new at $750 I think...guy was desperate to get rid of them...lots of people selling their cams there

 

well, if the 350z cams were better than ours, then I was going to jump all over them, because people are selling them for around $100..

 

whats the difference between rev-up and non rev-up

 

might be more than just this, but I believe they have a variable valve control for the exhaust valves as well, and not just the intake valves, like the non rev-up..

 

^^ There were other changes, but none of them apply to this thread.

 

For $100, that may not be a bad deal, but for $450 on ebay you can get high performance cams. Its a LOT of work to change out cams. All depends on ur pocket book and desire for HP.

 

I'm not afraid of cams... I've swapped a couple on chevy's pushrod v8's (with some help).. I wouldn't think OHC's would be harder...

 

I think you're in for an unpleasant surprise if you think it's a cinch and you've never worked on OHC motors with a wet timing cover. Trust me...going through the trouble to install OEM cams would NOT be worth your while and i've broken down my share of VQ's.

 

He's right I'm afraid. The FWD VQ35 cam swap is 11-13 hours. Thats why I will probably pull the motor, and install headers, cams and lightened flywheel/clutch all at once. Its prolly 3-4 hours to pull motor/tranny and then its easier from there.

 

well, I didn't say a cinch... but ok.. thanks for the heads up I'll still do it myself, rather than have any shop touch my car.

 

Same here. Im trying to decide of JWT or Nismo cams are worth the very high cost versus ebay cams at 1/3 the cost. Any opinions?

 

ebay cams may be a "you get what you paid for"

Depending on what material the cams are made out of, they could actually "wear" out if it is crappy material. I don't know the exact physics or science behind it, but all I know is that my buddies friend with a RSX bought cams and the "lopes" or w/e you call them wore out on him... lol

 

Lobes are what u are talking about. Was it an ebay cam he had?

 

It was actually the first set of cams to come out for the RSX and "the best thing out for it" (that makes a lot of sense since it was the one and only one out ) And no, he did not buy them off of ebay, so I'm not sure what to tell you, but I don't really like using ebay for stuff that much...let alone ENGINE internals!

 

There's nothing wrong with the "ebay" cams out for the VQ35. Quite a few have used them with no issues. And in case anyone is wondering, their specs are identical to the JWT S1's. 260* duration and 10.9mm lift for intake and exhaust.

 

the S1's are the ones that have a rough idle, right?

 

A more aggressive cam will do that...

 

I talked with a guy at the Stillen meet on Saturday who had a G35 with even more aggressive cams, and they idled fine, and revved up great.

 

The JWT S1's aren't THAT aggressive in the grand scheme of things and will idle just fine, if not a tad rougher than stock. Bump the idle speed up a bit if you don't like it.

 

So is there a final answer as to whether the ebay cams are a good buy at half the cost of JWT or Nismo cams?

 

I'd agree with this post right here. It just depends on what you want in a cam (i.e specs) vs your budget.

 

I'd say your good to go. Some heavily modded people have used them without fail.

 

Actually, in 2005 the rev-up engines shipped only in the Anniversary model 350 and the Track model 350. Starting in 2006, all manual 350's received the rev-up V6 and the autos continued to receive the non-rev up V6. Both are still VQ35DE engine variants. Model year 2007 changes over to the VQ35HR at 306HP/268TQ for all 350's.

The "rev up" VQ35DE utilizes stronger revised rods and pistons to support a raise of the rev limiter to 7100RPM, up from 6600RPM in the standard VQ35DE engines, along with revised cams for the "rev up" model.

It's important to understand that the rods in particular are the weak link with the VQ35DE engines. They aren't rated for anything over 7000RPM and therefore even if you could swap the rev-up cams in, you'd need to raise the rev limiter up to 7100RPM to take advantage of these cams, which is not safe, that is why Nissan swapped stronger rods/pistons into the rev-up model VQ35DE engines. That said, many people have upped the rev limiters on their VQ35DE's using TS ECU mods and so forth. It's a risk you need to decide you're willing to take.

The VQ35HR engine block utilizes a stronger ladder construction approach and even stronger rods and pistons with a higher CR (10.6 versus 10.3) to support a 7500RPM redline and deliver 306HP under newer SAE HP measuring standards.

Personally, I'd go with either the JWT or the Nismo cams if I were to consider such a modification, however, these cams generally sacrifice low end power for higher end RPM performance FYI, so you'll lose some low end grunt if you go with performance cams. Not a whole lot mind you, but some.

 

There's no evidence that suggests that the revup rods are stronger. The ROD BOLTS are stronger (probably the nismo units), and since the connecting rod part number includes the rod bolts, voila!...new part number.

The standard VQ35 rods can handle 7500 RPM with no problems. This has been proven.

I'm willing to bet this was put in place to reduce NVH and for future boosted applications, not for a 7500 RPM redline.

Different part number ≠ stronger part overall.

A 9.0:1 CR motor can rev to w/e RPM a 11.5 CR motor can. That has no bearing on a the engine speeds that a motor can handle.