2.2L Engine swap
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From: Somerville, MA, USA
Originally Posted by Intrepid175' date='Feb 21 2005, 08:57 AM
There are several plausible reasons why Honda reduced the redline to 8k when they stroked the 2.0 to the 2.2 engine which have all been discussed adnauseum so I won't go into them here. If they can get the 2.2 to survive reliably with a 9k redline, no one will be more pleased than I but I'd never consider modifying my MY04 unless I was convinced that I'd see no significant reduction in reliability. I intend to keep my car for a "very" long time and while the 9k redline would be nice, it's not a biggy for me! 
I suspect that auxiliary systems have a lot to do with the limits. With 10% more displacement and 10% lower redline, the 2.2L pumps the same volume of air at redline, so they didn't have to upgrade the exhaust system (in particular, the catalytic convertor), the intake, the cooling system, etc.
As an aftermarket modification, one could treat a 2.2L engine with a 9k redline as still having an 8.2k "orange line" that should be broken only on a limited basis. This is how cars without rev limiters typically handle the situation. For how I drive, that would be fine, though it wouldn't help the people who keep the engine in vtec "all day".
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From: Longmont, CO
Originally Posted by CrazyPhuD' date='Dec 10 2004, 12:33 PM
Ok so I've kept my mouth shut up till now, but I do know one board member that's been running(and tracking) a MY00-03 ECU on a 2.2L for probably 9months now. I'll PM him and see if he wants to PM about his experieces. He has dyno charts for this setup already. Might be useful. So far so good with his car.
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From: 9one6
billman250: Just finished reading over the 6 pages of thread from this post 
and wanted to ask how much hardtopguy was selling the motors for? I basically am in the position where I have 2 MY04 motors, tranny, ecu, rear diff., basically a complete car and need to part 1 (1500 miles) out soon. It would be great if you can PM a price range on what I should be asking for the stuff.
Thanks
and wanted to ask how much hardtopguy was selling the motors for? I basically am in the position where I have 2 MY04 motors, tranny, ecu, rear diff., basically a complete car and need to part 1 (1500 miles) out soon. It would be great if you can PM a price range on what I should be asking for the stuff.Thanks
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Originally Posted by dhayner,Jan 27 2005, 02:32 PM
Okay, my last words (thank God?) on this subject.
I agree that a smaller R/S ratio increases side loading. I don't think this is a redline consideration, though, because side loading is highest near max torque rpm, not redline. The high cylinder pressure at max torque rpm is what causes the torque to be high. Up at higher revs, breathing suffers and pressure falls off.
Bigger R/S ratio also reduces max piston acceleration. But it makes a difference whether the bigger ratio comes from a longer rod or a shorter stroke. (I got stumped by the calculus - too long out of school. But through the miracle of spreadsheets, I could analyze very small finite steps rather than infinitesimal ones - close enough.) I varied the S2000 rod length by +/- 5%, and then stroke by +/- 5%. The resulting effect on acceleration was +/- 1% for the rod length variation and +/- 6% for the stroke variation.
I believe the reason high-performance, high-speed engines do tend to have big R/S ratios is because they use very short strokes, not very long rods. They go to the short strokes to minimize max piston acceleration. That's my view, not necessarily the gospel truth.
Jet designer dude
I agree that a smaller R/S ratio increases side loading. I don't think this is a redline consideration, though, because side loading is highest near max torque rpm, not redline. The high cylinder pressure at max torque rpm is what causes the torque to be high. Up at higher revs, breathing suffers and pressure falls off.
Bigger R/S ratio also reduces max piston acceleration. But it makes a difference whether the bigger ratio comes from a longer rod or a shorter stroke. (I got stumped by the calculus - too long out of school. But through the miracle of spreadsheets, I could analyze very small finite steps rather than infinitesimal ones - close enough.) I varied the S2000 rod length by +/- 5%, and then stroke by +/- 5%. The resulting effect on acceleration was +/- 1% for the rod length variation and +/- 6% for the stroke variation.
I believe the reason high-performance, high-speed engines do tend to have big R/S ratios is because they use very short strokes, not very long rods. They go to the short strokes to minimize max piston acceleration. That's my view, not necessarily the gospel truth.
Jet designer dude
C4SxM5
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From: Long Island, New York
Car is doing well at 9k.
04 ecu made 200 rwhp.
01 ecu made 215 rwhp, so we will run this for a while.
Car has a couple thousand miles, and pulls amazingly.
How you like them apples
04 ecu made 200 rwhp.
01 ecu made 215 rwhp, so we will run this for a while.
Car has a couple thousand miles, and pulls amazingly.
How you like them apples