dieselgg

This is a question on my friends 98 Prelude. I want to know if driving in 5th gear at 120 km/hr (74 miles/hr), whether it is normal for the engine to be revving at 3500 rpm.

I know the Prelude is a high revving car but I think the 3500 rpm is too high. My friend is one of those guys who bought the car but does not know anything about cars in general.

98vtec

thats normal.

RPM is governed by the transmission so its not like the engine can be wherever it wants at a given MPH/gear.

dieselgg

thanks 98vtec

Dicorp

that acually sounds a bit low, i was sure the h22 tranny revs at 4000 at 120km/h

QUIETP_11

iTrader: (1)

4000 would be right about 80mph or ~130km/h

dumkopf

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dicorp &raquo;</TD></TR><TR><TD CLASS="quote">that acually sounds a bit low, i was sure the h22 tranny revs at 4000 at 120km/h</TD></TR></TABLE>

5th gens have wider gearing than 4th gens.

H22Honda98

how do i check the VIN on my tranny? i had a auto--manual tranny swap about a year ago and now im wondering whether i even have a prelude tranny. i dont even hit 4000 rpm's on the interstate until about 102 mph??? thanks in advance........

-Brandon

vlang29

it's a white sticker on the transmission, pretty close to where the engine code is.

Acidcrakker

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by QUIETP_11 &raquo;</TD></TR><TR><TD CLASS="quote">4000 would be right about 80mph or ~130km/h</TD></TR></TABLE>

Thats what mine does and I have the H23 tranny on it

H22Honda98

alright thanks, ill check the VIN here in a few minutes. does having an H23 really make that much of a difference compared to an h22 trans? is the gearing vastly different? i checked the ratio's but that means nothing to me because i dont understand it. thanks guys

-Brandon

Acidcrakker

h23 has longer gears

h22 has shorter gears for faster acceleration

Both have same final drive


Modified by Acidcrakker at 3:57 AM 1/21/2008

H22Honda98

is it a noticable difference? (sorry for the stupid questions)

Acidcrakker

Im sure there is, Ive only had the h23 tranny so, far. Looking to upgrade before the end of the year. Supposedly, its faster acceleration and easier to do burnouts.

H22Honda98

ok, well from what i can see someone ripped off the code off of the tranny. i dont know whether to blame the shop, or what happened, but i still cant tell. bottom line, is there any way that a 5th gen tranny should be running at 4000 rpms at 102 mph? thanks. again.

VTecLude1994

iTrader: (1)

4000rpms at 102mph? I think I'm usually at 4000rpms at 80mph in my 4th gen.

H22Honda98

ya i know thats why im wondering........are there any 5th gen guys with any input? thanks

-Brandon

A Blue Lude

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Acidcrakker &raquo;</TD></TR><TR><TD CLASS="quote">h23 has longer gears which means longer final drive.

h22 has shorter gears for faster acceleration</TD></TR></TABLE>

The M2S4 transmission has the same final drive as H22 transmissions. The M2S4 also shares the same 5th gear ratio as many H22 transmissions, although not the M2F4's.

Acidcrakker

I stand corrected<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by A Blue Lude &raquo;</TD></TR><TR><TD CLASS="quote">

The M2S4 transmission has the same final drive as H22 transmissions. The M2S4 also shares the same 5th gear ratio as many H22 transmissions, although not the M2F4's.</TD></TR></TABLE>

borat

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22Honda98 &raquo;</TD></TR><TR><TD CLASS="quote">ya i know thats why im wondering........are there any 5th gen guys with any input? thanks

-Brandon</TD></TR></TABLE>

My car is a little over 4000 rpm at 80 mph.

H22Honda98

well ill be heading up to the shop that got my tranny and rebuilt it. they told me if came out of a 99. apparently its an h23, or something. either way, im the only 5th gen ive seen that doesnt hit 4000 rpms until 100-102 mph

veetak

might be an accord / f22 tranny?

white5thgen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by veetak &raquo;</TD></TR><TR><TD CLASS="quote">might be an accord / f22 tranny?</TD></TR></TABLE>

ditto. my buddys 4th gen had an h22 with f series tranny and the gears are really long. he could hit 140mph in 4th gear lol

H22Honda98

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by white5thgen &raquo;</TD></TR><TR><TD CLASS="quote">

ditto. my buddys 4th gen had an h22 with f series tranny and the gears are really long. he could hit 140mph in 4th gear lol</TD></TR></TABLE>

so can i. does anyone know any other way of finding out what tranny it is without the code sticker? mine was ripped off and i want to be sure of what it is when i head up to the shop tomorrow. theyre fixing this........

borat

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22Honda98 &raquo;</TD></TR><TR><TD CLASS="quote">so can i. does anyone know any other way of finding out what tranny it is without the code sticker? mine was ripped off and i want to be sure of what it is when i head up to the shop tomorrow. theyre fixing this........ </TD></TR></TABLE>

http://www.race-track.com/news.asp?TOPIC_ID=541

Go out and hold the car at a certain RPM and note the speed, then use some mad algebra skillz to solve for your final drive. Maybe you can find which tranny matches up.

H22Honda98

thanks a lot, ill give that a go

edit.....ok that looks impossible. its probly really easy, im just mathematically retarded. is that the only thing you can do?


Modified by H22Honda98 at 8:26 PM 1/21/2008