CYM goin to PFSupercars for new ported motor and A-Spec GT42Rinstall!
#52
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Originally Posted by Zero R
Extrude honed 20B stock IM's are proven to make 900hp anybody saying they don't work hasn't run one. Not shooting you down, Just know the people doing it.
Besides all that, what does a 20B intake manifold have to do with the 13B that Ernie is running?!
-Alex
Last edited by TT_Rex_7; 08-03-05 at 03:47 PM.
#53
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Ha! would you feel better if I said 700hp on 2Rotor I'm well aware of the all that you said I designed my own mani years ago. The only point I was making was good power can be had from the stock IM so many wanna go the custom route now. When for 99.9% there really is no need.
#54
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Originally Posted by Zero R
Ha! would you feel better if I said 700hp on 2Rotor I'm well aware of the all that you said I designed my own mani years ago. The only point I was making was good power can be had from the stock IM so many wanna go the custom route now. When for 99.9% there really is no need.
Also keep in mind extrude and honing is going to effect how the car will run around town. When you extrude and hone, your enlarging the runners, which will decrease the velocity. Or, in other words, you shift the power towards the low end. However, a turbocharger can usually overcome this, and still create power up top, without dropping off. This, however, all depends on the turbocharger. If your thinking, great, I need more low end since I have a laggy turbo, think again! It's not quite that simple. Depending on where your intake manifold is tuned to make max power, will depend on how your turbo spools.
There's a guy on this board with a GT42 that extrude and honed his factory intake manifold, then tried the Xcessive LIM, and it outflowed his extrude and honed factory LIM right out of the box. So, in most cases, the Xcessive LIM will yeild more power over an extrude and honed LIM. Of course, if you still want more power, the next step is a custom IM.
-Alex
Edit:
Originally Posted by silvr94r2
Yes i'm using the GZ lower which flows much better than stock. It actually flowed better than my ported and Extrudehoned LIM. I had Extrudehone match the front and rear rotors to within 1% of each other and the GZ still flowed better.
Last edited by TT_Rex_7; 08-03-05 at 04:59 PM.
#55
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w/ all the money someone can spend on extrude honing, getting an xcessive lim, upgraded tb, etc., he might as well do it right the first time and go w/ a properly build sheetmetal im w/ a the proper plenum volume and correct runner length, diameter and taper. not only will a good im make more power, it'll also make tuning easier and add a little extra insurance for the motor because fuel trim can be evened out much better than the stock im. not saying that a stock im wouldn't be sufficient, but this seems like a serious project so ernie might as well go w/ the best quality im he can get.
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Originally Posted by kabooski
You know
that the fastest 13B in the world
uses a stock 3rd gen manifold and a upgraded/modified stock TB
and uses C16
"Sporty Dynojet"/Motorsports
that the fastest 13B in the world
uses a stock 3rd gen manifold and a upgraded/modified stock TB
and uses C16
"Sporty Dynojet"/Motorsports
On another note, just because you have the fastest 13B in the world, doesn't mean it's making the most power. I'd be more interested in what the highest hp 13B uses. You could give me a 1,000 hp car, but I probably wouldn't be able to run 10's, when it should be running 8's!
-Alex
Edit: I want to apologize to Ernie. I've totally hijacked your thread. I just wanted to make you aware of why our cars don't have a plenum, and be careful choosing a TB. I'm sure Ross has alot of experience, but i'd be more interested in finding out how much experience with rotary engines. Our intake manifolds are setup diffrent than a piston engines intake manifold.
Last edited by TT_Rex_7; 08-03-05 at 11:45 PM.
#58
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Well for some reason my edit didn't show up on my last post...
I want to apologize to Ernie. I've totally hijacked your thread. I just wanted to make you aware of why our cars don't have a plenum, and be careful choosing a TB. I'm sure Ross Machining has alot of experience, but i'd be more interested in finding out how much experience they have with rotary engines. Rotary intake manifolds are setup diffrent than a piston engines intake manifold.
-Alex
I want to apologize to Ernie. I've totally hijacked your thread. I just wanted to make you aware of why our cars don't have a plenum, and be careful choosing a TB. I'm sure Ross Machining has alot of experience, but i'd be more interested in finding out how much experience they have with rotary engines. Rotary intake manifolds are setup diffrent than a piston engines intake manifold.
-Alex
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