Wats the difference between a base model tranny and a type sh tranny??
Can i put a sh tranny into a base model prelude?
How can you tell the difference between those two transmission if lay them side by side?
Looking to buy one but owner dont know if its from an sh or a base model.

thanks for your help...

 

You can't use an SH trans if your car is a Base. Easy way to tell is looking at the front of the trans, the serial number will say M2U4 for an SH trans and M2Y4 for a Base model.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vinuneuro &raquo;</TD></TR><TR><TD CLASS="quote">You can't use an SH trans if your car is a Base. Easy way to tell is looking at the front of the trans, the serial number will say M2U4 for an SH trans and M2Y4 for a Base model. </TD></TR></TABLE>

X2

Edit: you can also use a transmission from a 4th gen prelude

 

Thanks for the info..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by md23vtec &raquo;</TD></TR><TR><TD CLASS="quote">

X2

Edit: you can also use a transmission from a 4th gen prelude </TD></TR></TABLE>

yup, good idea...but it get worse gas milage due to shorter gears but its more agressive for accelaration

 

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

yup, good idea...but it get worse gas milage due to shorter gears but its more agressive for accelaration</TD></TR></TABLE>

That all depends on which transmission you use

 

i was assuming he was gonna use the 4th gen h22 tranny cuz he's looking to put it in his 5thgen

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dicorp &raquo;</TD></TR><TR><TD CLASS="quote">i was assuming he was gonna use the 4th gen h22 tranny cuz he's looking to put it in his 5thgen</TD></TR></TABLE>

Ok well to break it down to you with correct informantion. A 5th USDM vs USDM 4th gen gear ratio. THE 5th gen has shorter gears NOT the 4th like you stated. So if SHE ( assuming from the SN) got a 4th gen Vtec trans the gears would be slightly Longer/Taller

lets say a 97 base prelude M2Y4 vs a 94 VTEC M2F4


M2Y4 - 3.285 - 1.956 - 1.344 - 1.034 - 0.812 - 4.266
M2F4 - 3.307 - 1.950 - 1.360 - 1.071 - 0.870 - 4.266

 

Actually, the higher the gear ratio the faster the acceleration and the lower the top speed for that gear. The 4th gen H22 will top out sooner, but will accelerate faster.

You can use any H22A transmission, other than the SH on a 5th gen base prelude.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 577HondaPrelude &raquo;</TD></TR><TR><TD CLASS="quote">Actually, the higher the gear ratio the faster the acceleration and the lower the top speed for that gear. The 4th gen H22 will top out sooner, but will accelerate faster.

You can use any H22A transmission, other than the SH on a 5th gen base prelude.</TD></TR></TABLE>

Ahh I see I stand corrected the F4 has a slightly taller 2nd gear but thats it. So with the same 2.66 FD yes the Y4 with the 0.812 5th will top out after the 0.870 at the same rpm.

General rule of thumb the smaller the number the taller the gear also taking into accound the final driven gear also

 

ok, now im confused. i thought the 5th gen had a higher top speed because of its taller 5th gear. but you say it tops out the same
what is final drive?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dicorp &raquo;</TD></TR><TR><TD CLASS="quote">ok, now im confused. i thought the 5th gen had a higher top speed because of its taller 5th gear. but you say it tops out the same
what is final drive?</TD></TR></TABLE>

I did type that confusing sorry. Yes the 5th gen will be at a higher speed when topped out at the same RPM

Final drive is pretty much the tooth count on the ring and pinion gear

 

Is m2s4 model from the 4th generation??
Do you need any modification to put a 4th generation tranny into a 5th generation prelude??
thanks for the help..

 

nope unless you have a SH model.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by unxplaindgrlygrl &raquo;</TD></TR><TR><TD CLASS="quote">Is m2s4 model from the 4th generation??
Do you need any modification to put a 4th generation tranny into a 5th generation prelude??
thanks for the help..</TD></TR></TABLE>

M2S4 H23 transmission

 

So can someone break it down for me about the difference between the m2s4 (h23)and the m2y4 (h22a4) tranny?? Good and Bad..
thanks...

 

the M2S4 will be longer geared ie: MPH will be higher at redline that with stock trans, and when cruising at highway speeds, rpms will be a little lower