Just out of curiosity, does anyone make a cam for the VG33ER? I can find them for the VG33E.

Would they be the same cam (I figure duration might be a bit different)? OEM part numbers are the same for the E and ER.

Nissan uses the same cam for the supercharged and non-supercharged engines, so any VG33 cam would do.
Actually, the VG30E and VG33E(R) engines can interchange cams, and the VG33 cams are the crappiest ones of all. A cheap upgrade would be to take the cams out of a 90's V6 Pathfinder or Hardbody truck, or a pre-90 300ZX and swap them in.
You get .393" lift vs. the VG33's .354", and anywhere from 248 to 252 degrees duration vs. the 240(intake)/244(exhaust) of the VG33 cams. The 84-86 300ZX has a 252-degree intake/exhaust duration, 88-89 Z and the Pathfiner/Hardbody got 248 degrees.

Cam Sources:
www.jimwolftechnology.com
www.spencerlowracing.com
http://www.iskycams.com (may not carry them any more)
Nismo has cams too, their upgraded cam is simply the stock euro-spec pre-90 Z grind (264intake/262 exhaust) and are pretty good.

www.schneidercams.com has 4 grinds available as well, they re-grind your cams to spec, and are a very good lower-cost alternative to paying for a brand new set. I have their 262/.420 grind about to go in my Xterra. The 270 degree grind would be nice, but it's too agressive to idle properly with the constant drag of an automatic.

Brent

If duration is too high to idle, raise the lobe seperation angle.

I knew OEM cams were the same, just didn't know if aftermarket E vs ER cams would be interchangable... I suppose it makes sense that they are though.

I'll probably be going with the JWT cams mainly because I can get deals on JWT stuff.

Thanks guys.

Turbocharged vehicles benefit from a shorter exhaust duration because there are times when there is a lot of back-pressure between the exhaust valve and the turbo and that can sneak back into the cylinder if the valve is still open. Supercharged models don't have that issue.

Thanks, I'm relatively new to superchargers... I'm used to turbos.

www.schneidercams.

SCHNEIDER will custom grind ya a set. Two thumbs up to Schneider!

Im currenty building a 300zx Twin turbo,and
had him make me a set.

Right, I mentioned them and that I have a set from them myself...

Right back at ya!

Dang, $97.50 for the 260/.420" cams ( pn17071 ). Much cheaper than JWT @ $500!

The schneidercams site says "regrind customer cams only". Where did you get the extra set of cams from?

I've got a VG30DETT in my garage... maybe I'll start tearing it about. VG33 is a single overhead cam and the VG30 is dual, so which cam would I go with - intake or exhaust - unless they are the same lift+duration.

Thanks.

CanadianGTR, the DOHC cams are not interchangeable.

The Nissan VG re-grinds from Schneider are $95 PER CAM.
I got a spare set of loaded heads on Ebay for $10 a while back. Took the cams out for the re-grind, and I'm porting out the heads myself:

My bad... I just hear 300ZX and I assume Z32 (because I own one).

Nice job on the head, is that the finished product or will you be working it more?

Pretty much finished, don't want to bore it out too much and kill velocity. The exhaust ports got a considerably more agressive treatment:





Need to put a smooth finish on the exhaust side.

Still have 3 intake and 2 exhaust ports to do, and 5 bowls. It's a tedious job...

Are you going to flow bench them when they are done?

If not, you are not going to be SURE that what you are doing is making appropriate gains.

FWIW I have ported heads and intakes several times on American and European engines, and thought I was doing great, until I ran them on a flow bench! After some more trial and error I got it better, but each head is different, though the physics are the same.

Shaping of the ports is as important as size.

Well, I'm going to do my own home-brew flow-bench (no numbers, just a comparison) so I can do my best to equalize them all, but I'm considering having one cylinder tested properly when I'm done. I've been getting advice from someone that has ported many Nissan VG heads along the way, so far he believes I'm doing a pretty decent job.

What kind of gains are you guys thinking that the cam/port work will yield?

Hey Paco Pico, saw that you got a 2nd Gener, how do you like it in regards to the S/C?

No idea, and I'll never know. If I did the head work and kept the stock cams, intake, and exhaust, I would have some real numbers to compare with. But since I'm also upgrading the cams at the same time, even if I put off the intake and exhaust, I won't know how much power comes from the porting or from the cams. And since it's entirely possible that the porting etc. I'm doing on the heads could actually be detrimental, any gains from the cams could be negated by poor porting. I hope to wrap the head work up by the end of the month and get one on a bench, then when I have my old heads back I can put them on a bench as well and I'll have some hard numbers to show for it.

As it is, I'm hoping that after the heads, cams, intake and exhaust are accounted for I might see 20-25 hp at the wheels...

Two things:
1) I think you need not take much material off the heads or intake to make a difference. Just clean up castings and match the ports. Any more and you're messing with the engineering aspects of the engine.

2) Answering for Paco, '03 SE S/C was nothing compared to my new '05. Especially the functionality of the Diff Lock and the computerized controls on the drive train. Two very different vehicles entirely!

Brent,

Have you completed this project yet? What are the results?

Heh, nope, got 90% of the head work completed and lost motivation. Just gotta flow-match the ports and put the proper finish on things and I can turn it over to the guy doing the swap. I've been through 3 revisions of a home-brew contraption to get a flow comparison of the ports (flow-bench time is expensive!) and I think I have that figured out. Gotta take readings and tweak things next.

It looks like I missed one too...Sorry JDM.

For a comparison of the 02S/C to the 05, the 05 wins hands down.

My S/C had no cats, K&N FIPK, 2.3" pulley, and boost bypass mod, and the 05 will still beat it to 60, in the 1/4 mile, and passing on the freeway. Stock the S/C was OK off the line, but ran out of steam at the higher RPM's.

If I were to characterize the S/C (modified) with the 05 VQ40 (stock) I would say the S/C truck was way more violent at take off (4.636-vs-3.31 gear ratio helps), but fell off at the top end, whereas the VQ40 is soft off the line, but pulls hard from 3K to past the red-line.

I just checked Schneidercams price list and it looks like their prices have gone up!

p/n 17071
list 340.00
resale 204.00

Still cheaper than JWT or SLR, but not quite the $190 deal from 4 months ago.

Bump on an old thread.

I have a set of OEM cams I am thinking about having reground by Schneidercams, but I'd like to know if anyone knows the best sources for new lifters, and if possible, what the part number is?

I'm trying to figure out how much the swap is going to cost me.

Thanks.