aftermarket cams and nitrous - Honda Prelude Forum

ludeact · 03-26-2002, 11:26 PM

Is anyone running any aftermarket cams with a nitrous set up? LIke Crower Stage 2 with stock idle lobes. Anyone know of experiences in this? thanks.

Toretto · 03-27-2002, 07:52 AM

I am curious also, afterall, who wouldnt want to exploit our VTEC engines. Just because you have nitrous doesnt mean you have to forget about VTEC.

cuseC08 · 11-15-2002, 08:56 AM

well i got the stage2 skunk2 cams and i'm planning on installing a direct porrt 75shot. Hopefully it's safe.

laughin2.2 · 11-15-2002, 10:59 AM

I haven't thrown cams in yet, but from everything that I've heard it shouldn't be a problem as long is everything is tuned.

Turbo Lude SH · 11-17-2002, 10:14 PM

Well what you've probably heard is the idea that nitrous and long duration/overlap cams wont get along. The theory is the same as that with running a turbo/supercharger with long duration/overlap cams. That the nitrous/boost will escape out the exhuast valves while they are shutting and the while the intake ones are opening.

Many people believe this, but I don't.

Boost is different than nitrous in that boost is filling the combustion chamber before the piston reaches TDC, BTDC the air is eing forced into the cylinder.

Now the same is happening in a nitrous engine, it's coming in all the time, but the only combustible part of the n2o is released @ TDC or ATDC as long as your ignition timing isn't advanced.

So I think you should be safe with a big shot of nitrous and some aggresively overlapped cams.

If not, get some cam gears and you can get rid of the overlap and still have the large lift of the Crowers.

SuperLude · 11-18-2002, 07:51 PM

i was wondering the same thing... i have jun cams in my car right and a 50 shot dry nitrous kit sitting in my room.. still deciding whether or not i should go ahead and install it.

somebody reassure me.. cuz im dying to try the juice..

Blitzbaster02 · 11-18-2002, 09:12 PM

hmmmm, good question. What do you run in your car now with the cams? Got any dyno's???

SuperLude · 11-20-2002, 11:44 PM

sorry.. i havent really gotten a chance to go to the dyno yet. well.. i just gotta say my car actually ran slower when i first put my cams in.. i've been told thats what happens when you have no tuning.

stock = 15.6
w/ cams and exhaust = 15.7

since then.. i've added a lot of stuff.. but havent been back to the track yet. i'm gonna try go this weekend before i put in my nos to get some baseline figures.. will try and keep everyone posted if i can!

cuseC08 · 11-21-2002, 11:37 AM

yeah my car didn't seem to get any faster with skunk2 cams un tuned either

Anton BB6 · 11-25-2002, 03:30 PM

Don't let this thread die!! I want to run stage 2's with a 50 shot and want to know if this will be OK....

laughin2.2 · 11-25-2002, 06:17 PM

read turbo lude SH's reply.

Anton BB6 · 11-25-2002, 08:01 PM

Quote:

Originally posted by laughin2.2
read turbo lude SH's reply.

I did. He said he's heard it's bad, and he says nah it's good...

A bit misleading. I'd like to know the truth.

laughin2.2 · 11-25-2002, 10:48 PM

Quote:

Originally posted by menace

I'd like to know the truth.

Well he's not lying to you. With correct tuning you can run cams and nitrous. I have never heard otherwise.

Dragazn · 11-29-2002, 05:10 PM

how hard is the tunning must be thou, we are just talking about enought fuel into the engine right or fuel and watching out for overlap too.

laughin2.2 · 12-01-2002, 12:43 PM

Quote:

Originally posted by Dragazn
how hard is the tunning must be thou, we are just talking about enought fuel into the engine right or fuel and watching out for overlap too.

I'm not sure I'm deciphering your post correctly, but I'll take a shot at answering it.
As far as tuning goes on a street car you want to have your AF ratio stoich. Then run the nitrous and make sure that you have the right jet combination. You have to decide for yourself which AF you want while on the bottle. Richer is safer, but you'll guve up power. Finally, tune the cams for NA use, make sure the exhaust gases have enough time to get out of the chambers, and finally adjust your cams if you aren't making good power on the bottle.

SuperLude · 12-02-2002, 03:12 PM

installed the nitrous last nite.. punched it once and my engine hasn't blown yet.. so i guess running nitrous w/ cams should be ok. we ran out of time last nite.. so im just gonna drive my car around for a week.. then bring it back next weekend for more work and inspections. i'll keep you guys posted on the status if you're interested.

laughin2.2 · 12-02-2002, 06:12 PM

Quote:

Originally posted by SuperLude
installed the nitrous last nite.. punched it once and my engine hasn't blown yet

That's always a good feeling. If you can get it on a dyno that would be great.

Dragazn · 12-19-2002, 01:00 AM

SuperLude, how many shot are you running, also what cams are you running on and what you have, and in what gear did you spray?

Ritteri · 12-19-2002, 08:44 AM

Nitrous isnt FI. So I dont see why in the world the question would be asked on if a performance cam would be good or not. Nitrous can be used to enhance any setup for power gains.

NXLude · 12-19-2002, 07:32 PM

Overlap isnt good for N20 either though...it does share some characteristics with boost