They do make a S-2 for the 350z because I bought some but they do not list them on the website for some reason. But seeing noone has heard of them I guess you cant tell me if they are good or not for Vortech.

 

Do these cams move your peak power closer to redline?

 

I called them last week and they recommended the s1 cams over the s2's.

 

Like Earl, I spoke with JWT before building my S/C'd motor & they said that while their S1 cams work fine with turbos but they lend themselves better to either N/A or S/C applications due to their overlap. They told me that their S2 cams have less overlap & R designed for turbos. Bottom line from them was S1's for N/A & S/C; S2's for turbos. Not sure why turismo was given different advice than myself & Earl?

MG

 

I just sold my JWT CAMS S1, for $950.00, as I was going to use them till I ran into Scotts Perfomance and saw Brian's car. I put a "+" on the Scotts Performance also. That's the way I'll go with my APS TT Setup, which will be in a couple of months once I'm back from my vacation. 800 rpm Idle and a smooth daily driver with the hp ready at any second. Exactly what I want.

 

Post a link to a website with some more information !

Danny

 

Not selling, not advertising, no sales pitch here, nothing but chit-chat. Answer to your request: www.scottperformance.us

 

Hey Kyle, or Anyone

Tried to search but server is to busy to help me out


What is the stock cams Duration and lift?

I know i read it some where, just cant seem to find it.

Thanks
Aceman

 

Why would SC cams be different from Turbo cams ?

Danny

 

10 degrees advance over stock would mean powerband shifted up by 500 rpm (rule of thumb)

Danny

 

Danny,
Good question, I would suggest you talk to the shop on the website above and drill them or ZCargarage.com, as both are professional garages specializing in Z's and G35's. All I know is I have several friends here with aps tt's and some have the jwt cams s-1 and some the cams done by the shop listed above. You might want to also speak with "Brigbri" (800 hp) or Maluchi 700+hp. They have the experience and can give you first hand knowledge of their cars. Both are surely excellent choices, it's just preference and asking the shops their opnion as they are the modders for many or talking with some of them car owners with the experience. Good luck on your decision.

 

Quick primer on turbo cam vs NA:

http://www.mx6.com/forums/archive/in.../t-134786.html

I also highly recommend one of the books referenced in this posting, "Maximum Boost" by Corkey Bell. Fairly readable and very informative:

http://www.amazon.com/gp/product/083...lance&n=283155

-E

 

I was asking why cams for SC (Supercharged) and Turbo would be different.

Thanks for the links, but I know that information after researching cams.

One thing I notice about all cams being offered is the lack of information. Sure, they publish duration and lift, but leave out if this is advertised duration (at what lift?) or standardised duration at 0.050" of lift. Neither does anyone say WHEN the duration starts. He11, my cams even came without cam card...

Danny


A great picture showing overlap:


Some more interesting tech articles about cams
http://www.chevyhiperformance.com/techarticles/95298/
http://www.dynospotracing.com/cams.htm
http://www.bchra.org/TipsTricks/Cam_Shaft.htm
http://forums.hybridz.org/showthread.php?t=102280

 

Does anyone know anything about Crower Turbo cams?

 

Sorry, I misunderstood the question! The reason Turbo cams are different from supercharged cams (from what I've read) is that SC cars don't have abnormally high exhaust backpressure like turbo cars do. So you don't have to worry about reversion because the exhaust pressure is never higher than the intake manifold pressure.

This is just a guess, but you might actually have the opposite problem with SC... with a really effective scavenging exhaust and really high boost pressure, you might be pushing a lot of unburnt fuel/air mix right down your exhaust with a high overlap on an SC car. Wouldn't hurt performance any, just gas mileage. You'd also be getting less effective compression with a really long duration intake? These are just impressions I get from my limited knowledge.

So I'd imagine you would want high lift/high overlap for NA, high lift/medium overlap for SC, and high lift/low overlap for turbos? Someone else chime in if that sounds right or wrong!

-E

 

Big thumb for the Scott Performance turbo cam (www.scottperformance.us). Call and ask for Ted. They have three stages. Stage 1/2 don't require any valve/bucket machining (some Tomei's do) and bolt right in. The design is really trick on the duration/lift/overlap characteristics. They wick up exhaust energy quick. We made 35whp on an APS single through the mid-band (exactly where you want it, especially on the APS ST) on 9-10psi. Engine response is whoa better and boost falls off less.

We're soon to install the stage 2/3 in our shop car. Can't wait to share the results.