H22 Redlines?
05-20-2003, 04:19 PM
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H22 Redlines?
I was just wondering how high have any of you have got your redline up to? Also do your motors still make good power past the factory redline for those of you that have higher redlines?
05-20-2003, 05:48 PM
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Re: H22 Redlines? (sslude)
With hondata on a P28 I shift at 8k with all stock internals. It didnt feel like it was dieing off, and it seemed to help given that the next gear would start higher. I just figured 8k was a good even number, and its only a few hundred over stock. Never had problems with it, but I over revved at the track (shifting mistake) and ended up bending some valves. So I guess I can vouch that h22 bottom ends can handle 10K cuz thats where mines been (for a split second) 
Mark
Mark
05-20-2003, 06:01 PM
#4
Re: H22 Redlines? (Scilacci4)
With a stock valvetrain and N/A, you start losing power after 7k. The only advantage for revving high is to get the next shift into VTEC, but you never have to go over redline (7400 rpm). Remember that most Honda tachometers are off. Your actual rpms will be a few hundred less than the indicated on the tach. With chipped ECU's you can get some more power, but some eleminate the fuel cut-off. Unless you have an upgraded valvetrain, it's crazy to risk bending the valves on a missed shift.
05-20-2003, 06:40 PM
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Re: H22 Redlines? (wannabe)
My rev limiter is set a 8200....but it was my fault went from 3rd to 2nd.....so there was nothing that my rev limiter could do to stop it. 
Mark
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05-20-2003, 06:59 PM
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Re: H22 Redlines? (satan_srv)
um, 9k i guess, never pushed it that far really
i know a guy that used to PDI new cars at Honda, they said they had trick to bypassing the rev limiter for PDI, and they would turno them close to 10k rpms before they hit the lot
makes you wonder how hard your Honda has been driven....
i know a guy that used to PDI new cars at Honda, they said they had trick to bypassing the rev limiter for PDI, and they would turno them close to 10k rpms before they hit the lot
makes you wonder how hard your Honda has been driven....
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05-20-2003, 07:14 PM
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Re: H22 Redlines? (Scilacci4)
With after market head internals would it be possible to rev out to 10,000 with constant power gain?
05-20-2003, 11:56 PM
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Re: H22 Redlines? (Scilacci4)
the main reaosn you dont make power past 6800 is the p13 ecu..switching to a GSR program of some variety, it has more feul and agressive timing maps up higher, and will allow you to make more power..my only dyno ive done made max power at 7600 rpmand after that it stayed nice and flat till 8k..kinda like a table top, no sharp drop off..just make sure you have the fuel, and i wouldnt rev any higher than 8k on the stock valve train, but it certainly can hadnle 8000 rpms...peace
05-21-2003, 06:51 PM
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Re: H22 Redlines? (PreludeRacer023)
I'm no expert but I understand what rotational forces are and how camshafts are tuned for a particular RPM, so.... at those high rpms you have to fight even more friction and rotating mass which the stock cams are not tuned for. I would get some stiffer valve springs before venturing past 8k first to be safe, then some camshafts, finally some lighter pistons. The H22 isnt the first choice for going high rpm because of its less than ideal rod:stroke ratio, every wonder why B16 is so popular? 
"It is better to make torque at high rpm than at low rpm, because you can take advantage of gearing."
"It is better to make torque at high rpm than at low rpm, because you can take advantage of gearing."
05-21-2003, 07:04 PM
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Re: H22 Redlines? (PreludeRacer023)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreludeRacer023 »</TD></TR><TR><TD CLASS="quote">the main reaosn you dont make power past 6800 is the p13 ecu..switching to a GSR program of some variety, it has more feul and agressive timing maps up higher, and will allow you to make more power</TD></TR></TABLE>
You can add all the fuel you want if you can't get enough air in the cylinder you are just wasting fuel. The problem is that the cam profiles are not designed to make power that high up. More aggressive cams will allow you to make more power up high but they usually sacrafice the low end for it. Dumping extra fuel is not the answer.
Gabe
You can add all the fuel you want if you can't get enough air in the cylinder you are just wasting fuel. The problem is that the cam profiles are not designed to make power that high up. More aggressive cams will allow you to make more power up high but they usually sacrafice the low end for it. Dumping extra fuel is not the answer.
Gabe
05-21-2003, 07:04 PM
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Re: H22 Redlines? (Scilacci4)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Scilacci4 »</TD></TR><TR><TD CLASS="quote">With after market head internals would it be possible to rev out to 10,000 with constant power gain?</TD></TR></TABLE>
you will need to balance the bottom end to do that on a daily basis, if the crank is not balanced it will tear the motor apart in no time
you will need to balance the bottom end to do that on a daily basis, if the crank is not balanced it will tear the motor apart in no time
05-21-2003, 07:09 PM
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Re: H22 Redlines? (Chinchilla)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chinchilla »</TD></TR><TR><TD CLASS="quote">wasn't there some guy who had everything balanced to redline at 11K? what ever happened to him?</TD></TR></TABLE>
i'm not sure if your talking about lone luder, but he posted in a similar thread that he took his engine to 11k by mistake. without any problems, but that was accidental.
i'm not sure if your talking about lone luder, but he posted in a similar thread that he took his engine to 11k by mistake. without any problems, but that was accidental.
05-21-2003, 08:58 PM
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Re: H22 Redlines? (Gabe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Gabe »</TD></TR><TR><TD CLASS="quote">
You can add all the fuel you want if you can't get enough air in the cylinder you are just wasting fuel. The problem is that the cam profiles are not designed to make power that high up. More aggressive cams will allow you to make more power up high but they usually sacrafice the low end for it. Dumping extra fuel is not the answer.
um ok, so then explain to me why my dyno shows the power curve going UP all the way to 7600-7700...with my chipped ecu...obviously the stock cams are making power still...its just like those who say cam gears wont get you any gains...but whatever floats thier boats
Gabe</TD></TR></TABLE>
You can add all the fuel you want if you can't get enough air in the cylinder you are just wasting fuel. The problem is that the cam profiles are not designed to make power that high up. More aggressive cams will allow you to make more power up high but they usually sacrafice the low end for it. Dumping extra fuel is not the answer.
um ok, so then explain to me why my dyno shows the power curve going UP all the way to 7600-7700...with my chipped ecu...obviously the stock cams are making power still...its just like those who say cam gears wont get you any gains...but whatever floats thier boats
Gabe</TD></TR></TABLE>
05-22-2003, 07:04 AM
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Re: H22 Redlines? (PreludeRacer023)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreludeRacer023 »</TD></TR><TR><TD CLASS="quote">um ok, so then explain to me why my dyno shows the power curve going UP all the way to 7600-7700...with my chipped ecu...obviously the stock cams are making power still...</TD></TR></TABLE>
Power curve, maybe. But look at what your torque curve is doing - that's what matters. The stock cams peak at 5,200-5,300 rpms, and then it's all downhill from there - by 7,400 rpms the stock engine is down almost 50 ft/lbs. of torque from it's peak. Cam gears might let you move things upward a small amount, but not enough to make anything over 8,000 rpms worthwhile.
Power curve, maybe. But look at what your torque curve is doing - that's what matters. The stock cams peak at 5,200-5,300 rpms, and then it's all downhill from there - by 7,400 rpms the stock engine is down almost 50 ft/lbs. of torque from it's peak. Cam gears might let you move things upward a small amount, but not enough to make anything over 8,000 rpms worthwhile.
05-22-2003, 07:05 AM
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Re: H22 Redlines? (93preludevtec)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93preludevtec »</TD></TR><TR><TD CLASS="quote">
i'm not sure if your talking about lone luder, but he posted in a similar thread that he took his engine to 11k by mistake. without any problems, but that was accidental.</TD></TR></TABLE>
i think he was tlaking about you
i'm not sure if your talking about lone luder, but he posted in a similar thread that he took his engine to 11k by mistake. without any problems, but that was accidental.</TD></TR></TABLE>
i think he was tlaking about you
05-22-2003, 01:13 PM
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Re: H22 Redlines? (Boosted97Lude)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Boosted97Lude »</TD></TR><TR><TD CLASS="quote">
i think he was tlaking about you </TD></TR></TABLE>
i don't get it
i think he was tlaking about you
</TD></TR></TABLE>i don't get it
05-22-2003, 01:21 PM
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Re: H22 Redlines? (PreludeRacer023)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreludeRacer023 »</TD></TR><TR><TD CLASS="quote">um ok, so then explain to me why my dyno shows the power curve going UP all the way to 7600-7700...with my chipped ecu...obviously the stock cams are making power still...its just like those who say cam gears wont get you any gains...but whatever floats thier boats</TD></TR></TABLE>
If your engine pulls up to 7600-7700 something internal is NOT stock. Even with fully tuned stock cams on the dyno we could not get power to shift that high on ANY settings. Like someone else said, dumping more fuel is not the answer.
If your engine pulls up to 7600-7700 something internal is NOT stock. Even with fully tuned stock cams on the dyno we could not get power to shift that high on ANY settings. Like someone else said, dumping more fuel is not the answer.
05-22-2003, 01:41 PM
#21
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Re: H22 Redlines? (4bidden)
well.... this ecu has a redline of 9500, and has seen it (motor)
chipped p28
2.5 inch exaust (crimp) with straight muffler.
dc header
aem intake
ACT clutch
jdm motor (nothing else)
notice where the power fall's off ??????
chipped p28
2.5 inch exaust (crimp) with straight muffler.
dc header
aem intake
ACT clutch
jdm motor (nothing else)
notice where the power fall's off ??????
05-22-2003, 02:24 PM
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Re: H22 Redlines? (HotWheelz)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HotWheelz »</TD></TR><TR><TD CLASS="quote">
notice where the power fall's off ??????
</TD></TR></TABLE>
At the end of the big red X?
notice where the power fall's off ??????
</TD></TR></TABLE>
At the end of the big red X?
05-23-2003, 06:05 AM
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Re: H22 Redlines? (HotWheelz)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HotWheelz »</TD></TR><TR><TD CLASS="quote">notice where the power fall's off ?????</TD></TR></TABLE>
Yup. Notice that by 7,500 rpms, that engine is making less torque than it is at 2,000 rpms . . . . .
Yup. Notice that by 7,500 rpms, that engine is making less torque than it is at 2,000 rpms . . . . .
05-23-2003, 08:45 PM
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Re: H22 Redlines? (Daemione)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Daemione »</TD></TR><TR><TD CLASS="quote">
Power curve, maybe. But look at what your torque curve is doing - that's what matters. The stock cams peak at 5,200-5,300 rpms, and then it's all downhill from there - by 7,400 rpms the stock engine is down almost 50 ft/lbs. of torque from it's peak. Cam gears might let you move things upward a small amount, but not enough to make anything over 8,000 rpms worthwhile.</TD></TR></TABLE>
what??? when your drag racing, and in your upper RPMs its yourHP thats pulling the car...tourqe gets you moving, but HP is what pushes the car up top...and your telling me that my tourqe falls off but my car runs strong all the way through the powerband...but whatever..you guys said oh the p28 is horrible, yet its what got me to where im at in the 1/4 mile..
Power curve, maybe. But look at what your torque curve is doing - that's what matters. The stock cams peak at 5,200-5,300 rpms, and then it's all downhill from there - by 7,400 rpms the stock engine is down almost 50 ft/lbs. of torque from it's peak. Cam gears might let you move things upward a small amount, but not enough to make anything over 8,000 rpms worthwhile.</TD></TR></TABLE>
what??? when your drag racing, and in your upper RPMs its yourHP thats pulling the car...tourqe gets you moving, but HP is what pushes the car up top...and your telling me that my tourqe falls off but my car runs strong all the way through the powerband...but whatever..you guys said oh the p28 is horrible, yet its what got me to where im at in the 1/4 mile..
05-23-2003, 08:53 PM
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Re: H22 Redlines? (PreludeRacer023)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PreludeRacer023 »</TD></TR><TR><TD CLASS="quote">
what??? when your drag racing, and in your upper RPMs its yourHP thats pulling the car...tourqe gets you moving, but HP is what pushes the car up top...and your telling me that my tourqe falls off but my car runs strong all the way through the powerband...but whatever..you guys said oh the p28 is horrible, yet its what got me to where im at in the 1/4 mile.. </TD></TR></TABLE>
id like to see your dyno graphs
what??? when your drag racing, and in your upper RPMs its yourHP thats pulling the car...tourqe gets you moving, but HP is what pushes the car up top...and your telling me that my tourqe falls off but my car runs strong all the way through the powerband...but whatever..you guys said oh the p28 is horrible, yet its what got me to where im at in the 1/4 mile..
</TD></TR></TABLE>id like to see your dyno graphs