H23 vs H22 dyno overlay...interesting - Honda Prelude Forum

BlackMagic · 09-29-2002, 05:33 PM

so i found a site that had a very similar dyno chart, pretty sure dynoed at the same place....

one was a H23 with i/h/e
one was a usdm H22 with a filter

what i did was size them to match and overlayed them to show the torque difference on the bottom end...the H22 doesn't make more power until 5900 rpms

enjoy

bk94si · 09-29-2002, 05:51 PM

Just to make sure I can figure this thing out, the red and blue lines are for the H22 and the others are the H23 ?

brendon2k · 09-29-2002, 06:04 PM

Quote:

Originally posted by bk94si
Just to make sure I can figure this thing out, the red and blue lines are for the H22 and the others are the H23 ?

yes

bk94si · 09-29-2002, 07:02 PM

In that case, I'm glad I have an H23. There's quite a bit more power and torque for the type of driving I normally do. Looks like the H22 is pretty bad under 6000 rpm

prelude2005 · 09-29-2002, 07:07 PM

main reason the Si engine is great for turbo.
very nice...vtec engine has like no power in the lower rpm band.

Fast&furiuslude · 09-29-2002, 07:37 PM

good post. i find that dyno kinda decieving though as i just swapped my usdm h22 in and it makes just as much power in the low end than my h23. i can floor it at 3k and still break the tires loose as i did in the 23. i do have butterfly valve off so my secondary intake runners are open 24-7 as i did in h23, maybe that makes a difference.

Satan_SRV · 09-29-2002, 07:40 PM

That doesn't really say much, it's an H23 with I/H/E vs. an H22 with a filter. Good effort but you can't drawn any conclusions with it.

4bidden · 09-29-2002, 07:42 PM

discussed too many times......but in the end the h22 is worth at least a half a second less at the track.

Satan_SRV · 09-29-2002, 07:47 PM

Quote:

Originally posted by bk94si
In that case, I'm glad I have an H23. There's quite a bit more power and torque for the type of driving I normally do. Looks like the H22 is pretty bad under 6000 rpm

Haha that's funny...match up a stock h23 vs. H22 dyno.....that torque is high because of mods...anyways I already made my comment....

marshdoggg · 09-29-2002, 08:05 PM

Quote:

Originally posted by Satan_SRV

Haha that's funny...match up a stock h23 vs. H22 dyno.....that torque is high because of mods...anyways I already made my comment....

thats actually not true, i have collected quite a few dynos off of the net and thats about how the h23s torque curve looks anyway. most of the mods we do are for high end anyway, not low.
marsh

marshdoggg · 09-29-2002, 08:08 PM

Quote:

Originally posted by 4bidden
discussed too many times......but in the end the h22 is worth at least a half a second less at the track.

this however is true...
marsh

4bidden · 09-29-2002, 08:13 PM

or maybe even a little more than half second...

h23 w/ intake, header, exhaust, pulleys, ignition, plug wires
15.09@92mph

jdm h22 w/ intake, header, exhaust, clutch, flywheel, spoon ecu
14.32@98mph

im glad i switched

all my times are on street tires

Satan_SRV · 09-29-2002, 08:13 PM

Quote:

Originally posted by marshdoggg

thats actually not true, i have collected quite a few dynos off of the net and thats about how the h23s torque curve looks anyway. most of the mods we do are for high end anyway, not low.
marsh

that's 150+ torque peak! While I agree that the curve is nice and will be mostly the same looking, those numbers are high and somewhat misleading.

Yeah and H23 with a VTEC tranny would pull better 1/4 times......it loses out in 2nd and 3rd, they have the same first gear

cantdrive55 · 09-29-2002, 08:35 PM

Quote:

Originally posted by 4bidden
or maybe even a little more than half second...

h23 w/ intake, header, exhaust, pulleys, ignition, plug wires
15.09@92mph

jdm h22 w/ intake, header, exhaust, clutch, flywheel, spoon ecu
14.32@98mph

im glad i switched

all my times are on street tires

JDM H22s can't be compared...they're stronger than USDM H22s.

Fast&furiuslude · 09-29-2002, 08:42 PM

Quote:

Originally posted by cantdrive55

JDM H22s can't be compared...they're stronger than USDM H22s.

what a whole 7 more hp at the flywheel

due to a slightly higher compression.

cantdrive55 · 09-29-2002, 08:48 PM

Quote:

Originally posted by Fast&furiuslude

what a whole 7 more hp at the flywheel due to a slightly higher compression.

I've seen a JDMH22 with a short ram run faster than 2 or 3 USDM H22s with I/H/E/VAFC run a few tenths faster at the drag strip. Dipute that.

Also, I'd like to add, that while the H23 has I/H/E, that will no way in hell produce 25 lb ft of torque. The H23, up until VTEC crossover, has 25+ more lb ft of torque than the H22. Even at the peak torque, the H23 is still about 10-15 lb ft higher.

Satan_SRV · 09-29-2002, 09:00 PM

My stock H22 dyno'ed at 143 pk tq, but yes the H23 does have a flatter torque curve which is nice

Fast&furiuslude · 09-29-2002, 09:52 PM

Quote:

Originally posted by cantdrive55

I've seen a JDMH22 with a short ram run faster than 2 or 3 USDM H22s with I/H/E/VAFC run a few tenths faster at the drag strip. Dipute that.

Also, I'd like to add, that while the H23 has I/H/E, that will no way in hell produce 25 lb ft of torque. The H23, up until VTEC crossover, has 25+ more lb ft of torque than the H22. Even at the peak torque, the H23 is still about 10-15 lb ft higher.

Thats it anytime anyplace me and you, we'll settle this h23 h22 war!!!

haha j/k

Deepmist · 09-29-2002, 10:52 PM

Quote:

Originally posted by 4bidden
or maybe even a little more than half second...

h23 w/ intake, header, exhaust, pulleys, ignition, plug wires
15.09@92mph

jdm h22 w/ intake, header, exhaust, clutch, flywheel, spoon ecu
14.32@98mph

im glad i switched

all my times are on street tires

Did they have the same mileage?

Si4WS · 09-29-2002, 10:55 PM

Quote:

Originally posted by 4bidden
or maybe even a little more than half second...

h23 w/ intake, header, exhaust, pulleys, ignition, plug wires
15.09@92mph

jdm h22 w/ intake, header, exhaust, clutch, flywheel, spoon ecu
14.32@98mph

im glad i switched

all my times are on street tires

Clutch, flywheel, spoon ECU on a JDM h22 vs.. ignition & plug wires doesn't seem to be a fair comparison to me.