Well looks like a 3.5 is in the works for this winter, just trying to get some opinions for cam selection. I don't want to spend more than the cost of these cams. Both have their own advantage but under FI conditions what would you perfer?

Specs:
RevUp VQ35:
248-degrees duration 10.5mm lift(Per SR20DEN)

Ebay Knockoff:
260 Degrees Duration / .428" (10.9MM) Lift (Intake Cam.Advanced 2 Degrees)

I know the Revup has negative overlap which is great for FI since the intake and exhaust valves would never be open at the same time for boost to blow thru but it also has lower duration. I don't know enough about durations to know the benefits and the disadvantage.

So discuss...

 

No one has used the REVUP cams, no one has made an exhaust cam adapter(might be the same as intake)

 

Whats different about the exhaust cams? is it thicker than the intake sprocker or is it because of vtc (06 350z came with VTC on exhaust side too right?)?
I remember reading about some machining may or may not be required.

 

None of the above....Scott Performance Cams....made for boost in which they have minimal overlap. Check my350z.com.

Mike

 

Yeah no one has drilled them yet so I don't know if theyare better.

 

Well it looks like the company was sold last month and has not been selling any of their products. I was able to fine some for sale in the classifies so maybe when i am ready, these may be an option.

 

i would be careful of cheap camshafts, this is not some simple thing like a w.g or bov.. think of what could happen if those cams are off spec. , alot can go wrong in the head

you plan on shimming the valves as well? replacing new keepers?

 

have had some research on the ebay cams, they show decent gains and from what I have heard the quality is better than stock. I know Jime and a few other Altimas that are running these and have not had a problem.

JWT springs and shims are planned but I dont plan on reving more than 7 to 7.2k

 

edited for what you really mean.....

 

that could be nice if theres a IM that would make power up there... plus the springs are really for protection from valve float when I am boosting 15-16psi at that rpm.

 

Another question is, since these cams are made for the 350z and does not require any drilling or adapters like we do for our swap. How would that affect the cam if any by putting them with the 3.0 timing equipment? Will the cam seat the same way in relative to what a regular 3.5 would?

 

is it worth it to fix up a 01 maxima for performance?v

 

Actually, they will require the adapters. All VQ35 cams are the same. Doesn't matter which car until you get into the 04 and up range which has the rev up cams. The Scott cams would be installed just like the stock cams for a VQ35. I hope others will chime in to let me know if I am incorrect in my assumption.

Additionally, I would like to add another candidate to your selection which will probably be available by the time you will be doing the swap: JWT C2 cams. Suppose to be some great cams. Search these on my350z as well.

Mike

 

I also read about the JWT C2's while researching the SP's on my350, however, I don't know if I can afford those since I they are $1200+ while I can get set of SP (used for about $800) or the other two for lower. I just ordered the motor today and will be ordering pistons and rods in a month or two. I finally narrowed it down on the rods and pistons combo: Eagle H-Beam with either Wiseco or Arias pistons. A lot of people recomended the Arias XD but thats a little out of my range. I'm leaning on the arias but can't decide to get the oversize (96mm) and bore the cylinders or just stay stock size (95.5).

 

The poll shows a lot on staying with 3.5 cams? how come?

 

Who makes cam adapters? Both Tilley and Stephen Max or just Tilley?
I thinking if either of them were interested, I can buy the REVUP cams and send it to either of them and see if they can make adapters for the exhaust cam. Especially Tilley since he has access to 3.5s in his shop, I'm thinking if it works it would benefit the org and allow us to have a better cam option for FI.

 

I would send the cams to stephenmax if possilbe, you might want to have a look at the thread about tilley in the all motor forum.

IMO, you're already building the motor, you might as well go with aftermarket cams while you're in there.

 

I understand going with aftermarket cams but its not the matter of aftermarket or not since the REVup specs are perfect for a FI set with negative overlap. The aftermarket cams even though some has higher lift or high duration, it has overlap that is a disadvantage for FI setups.

 

PMed Along from my350z, he seems like the person that made this work on the 350z:

To ALong:
I was told from a guy on the max.org that you put some revup cams in a non revup head. I just had a few questions for you since if this would work, it'll be great for my turbo setup. So I have a few questions:

-what was involved to make this fit? any machining? i heard u need to replace the bolts with longer ones, are you talking about the camshaft bracket bolts?

-is it a must to get some stiffer valve springs or rev up retainers? Can stock 3.5 or 3.0 sorings handle it on a 6500rpm redline?

Thanks for your help. I'm really interested in making this work for me since I'm currently doing a motor swap also so the cam install would not be as difficult as compared to the motor being in the car. Thanx again

JY



Replied from ALong:
2006 cams are direct bolt in. Exhaust cams will need longer bolts, will need to source them from a fastener supplier. Try to install the 04 bolts and you will see what you need as far as length.

You dont need to change valve springs but it is a good idea

 

I'm made up my mind and decided to try the JWT C2s. Let hope the results validates my decisions

 

 

Becareful w/ the c2's as they are the aggressive and you may have overlap issues.

I vote for sticking w/ what is tried and true and use the ebay knockoffs. They are proven performance wise and quality wise. Again the c2's are unchartered territory. I know when i tried the nismo cams when i did my 3.5 swap i was running into overlap issues at idle which i think may have been caused by them being to aggressive.

BTW have you considered using a staggered setup? I have read a few articles that claim running a larger intake cam in conjunction w/ a smaller exhaust cam can actually help increase power while also helping with spooling the turbo. In that case you might want to consider the tomei cams since you can choose seperate intake and exhaust cams