ok so im gonna be doing a nice and strong Z6 build before i go to school next year, im going to get the stage one head job from exospeed and also a cam, but heres the question.

I want to be able to add nitrous to the engine since i am most like going to have 10:1 compression forged pistons in there. Do you guys know which cam, (exospeed, skunk2, crower, zex) would react the best twards nitrous. I have heard that the B series cams from Skunk2 love nitrous, is it the same for the sohc one?

Thanks a lot guys, ~matt

 

bump

 

hmm, i didn't have nitrous, but i did have have a JG Cam that responded really really well to turbo.

JG cam (85VT80)specs:
lift in/ex - 310/410/418
dur in/ex @.015 - 230/300/280
valve lash in/ex - .007/.009

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by madhatter07 &raquo;</TD></TR><TR><TD CLASS="quote">ok so im gonna be doing a nice and strong Z6 build before i go to school next year, im going to get the stage one head job from exospeed and also a cam, but heres the question.

I want to be able to add nitrous to the engine since i am most like going to have 10:1 compression forged pistons in there. Do you guys know which cam, (exospeed, skunk2, crower, zex) would react the best twards nitrous. I have heard that the B series cams from Skunk2 love nitrous, is it the same for the sohc one?

Thanks a lot guys, ~matt</TD></TR></TABLE>


What you are asking really has little to do with the cams. The cam simply lifts the valves for the air/fuel or in in your case air/fuel/nitrous to be burned.

The cam would not react to the nitrous.


Get whatever cam you think would be good for the compression of the motor and make sure it's tuned. When you are running nitrous, tuning the fuel is everything. If I was you I wouldn't worry about what cam you are running, I would worry about getting ample fuel to the mixture.

 

I'm definately not an expert, but I really think the cam would play a big role. Just as big a role as in a Turbo / SC setup.

I heard that all motor cams basically allow fastest intake and release of air / exhaust. While FI cams attempt to maintain boost pressure inside the cylinder.

I'd say just basically look for a FI cam. I figure no matter what kinda' forced induction it is, it's for the most part the same.

like I said, no flames, but someone please correct me if I'm wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Attoir &raquo;</TD></TR><TR><TD CLASS="quote">I'm definately not an expert, but I really think the cam would play a big role. Just as big a role as in a Turbo / SC setup.

I heard that all motor cams basically allow fastest intake and release of air / exhaust. While FI cams attempt to maintain boost pressure inside the cylinder.

I'd say just basically look for a FI cam. I figure no matter what kinda' forced induction it is, it's for the most part the same.

like I said, no flames, but someone please correct me if I'm wrong.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Attoir &raquo;</TD></TR><TR><TD CLASS="quote">I'm definately not an expert, but I really think the cam would play a big role. Just as big a role as in a Turbo / SC setup.

I heard that all motor cams basically allow fastest intake and release of air / exhaust. While FI cams attempt to maintain boost pressure inside the cylinder.

I'd say just basically look for a FI cam. I figure no matter what kinda' forced induction it is, it's for the most part the same.

like I said, no flames, but someone please correct me if I'm wrong.</TD></TR></TABLE>


You are on the right track, the cam(s) would make a difference, but fuel tuning is more important. When you burn n2o the temperatures and pressures inside the cylinders are extremely high and the fuel actually acts as a cooling process. With FI, you are cramming air into the cylinders at a great rate and you don't need the cam(s) to be open for that long (duration). With nitrous you are spraying a gas and it's essentially the same principal b/c you want more air and more fuel and that = more power.


Get the motor tuned with ample fuel, because nitrous, when heated splits into two molecules which is two parts nitrogen and 1 part oxygen. We all know that more oxygen = more power. BUT, if you cram more air into the cylinders without proper fuel you are defeating the purposed of n20. Ideally, you want more air and more fuel b/c after all, the nitrous is 1 part oxygen, when heated, and the way to make power is more air + more fuel.

So get the biggest cams you think is good for the compression of your motor and get the fuel tuned with your n20 setup and you will make more power.

 

I'm more of a domestics guy, so I don't know if this applies to imports or not. From what I know about N20 and cam selection, you want a wider lobe sep. and a little more duration and lift on the exhaust side (than you would usually have) to make sure that you're getting all the exhaust out.