EVAN&MONICA

Is there any plausable advantage for doing this over just doing a Vafc (or other) Tune and just lowering to around 4k?

d-craft

i would love to do a build thread but but my problem is there are too many china knock off companies that would get a head start on what i am making. honestly, I tired of a lot of knock off companies using others peoples ideas and R&D to make themselves a dime. sorry to rant but i will post dyno sheets and a few pics without trying to reveal too much.

d-craft

funny you should say that. actually D Sport has dibs on the full story but I can give away small bits of info on it to you guys.

d-craft

I'm sure what you are talking about would work but VTC is a complete different power adder.imagine VTC as an adjustable cam sprocket that is constantly getting adjusted throughout the power band.

d-craft

[QUOTE=LostMotion,Jul 5 2009, 04:16 PM]Having played with cam gears quite a bit, I don't think having variable cam timing on the intake would be very advantageous considering the cost to get a system working.

LostMotion

Hey brother if you can do it I'm open to the results.

I'm just guessing it won't be much help in a canyon or on a road course, I can keep my revs in a 2,500 RPM band quite easily. I have manual gears on my car and have seen what the changes do in certain rev bands. I personally can't advance my intake cam much because of a milled head, but others have done about 10 crank degrees. I know there is a benefit to optimizing the cam timing across the RPM band, but adding 5 ft-lbs of TQ at 4500 RPMs is of zero value to me, and I wouldn't pay $2-4k for it that's for sure. There would be some very minimal gain in power from optimizing 6500 RPMs versus 8000 RPMs, but that would be very small.

I think this system would shine for a daily driver, which is probably why the RSX has the system, to make the car more drivable.

S2Kage

so let me get this straight, your making I-vtec into the F-head?

d-craft

I think running the F head with the K series iVTEC is by far the easiest way to do it. plus i think the F head is way better then a K. it's just missing iVTEC. no need to do do a manifold swaps or anything.

CarbonYellowJ's

Is the iVTEC system run off of Oil pressure or....? I know its different but I used to own and tune a SVT focus and the VCT was oil actuated. I would be curious how, in general terms, this can work.

S2Kage

Yeah F head def much better than K... This could be pretty sick as an aftermarket design. See what you can do about improving power everywhere.