are they the exact same? Crx Si that is thx

 

89-91 are the same..
The only difference between the 89 and 90-91 is the clutch disk was smaller
88 is different

 

no not all are alike ... the only difference in a SI tranny are the 88 model... i think it has 20 splines... rather than the 89-90 21 splines...

 

so wait clucth disk is smaller? will it bolt on to my 91 crx si?

 

bump bolt on with no performance lost of course

 

Yes you can use the 89 tranny in a 90-91. The 89 setup used a smaller clutch but the spline count si the same as 90-91 so you can just use the 90-91 clutch.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integra_gs &raquo;</TD></TR><TR><TD CLASS="quote">no not all are alike ... the only difference in a SI tranny are the 88 model... i think it has 21 splines... rather than the 89-90 20 splines...</TD></TR></TABLE>

close, it's 21 splines on the '88 and only 20 on the others

 

but performance and gear ratios are all the same right?

 

what are splines?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by S9i1R &raquo;</TD></TR><TR><TD CLASS="quote">

close, it's 21 splines on the '88 and only 20 on the others</TD></TR></TABLE>

If you want to use a 88 tranny with a 89-91 clutch/fly, you need a 89 prelude disk (same dia as 89-91 clutch, but with the correct spline count)

It's been a long time though, can any one back me on this? I forget exactly which year prelude crosses over, ACT told me years ago...

 

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

splines are the number of teeth marks on the tranny .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Keith P &raquo;</TD></TR><TR><TD CLASS="quote">If you want to use a 88 tranny with a 89-91 clutch/fly, you need a 89 prelude disk (same dia as 89-91 clutch, but with the correct spline count)

It's been a long time though, can any one back me on this? I forget exactly which year prelude crosses over, ACT told me years ago...</TD></TR></TABLE>

I know the 88 Accord or 87 Prelude clutch discs work. Im not sure if the 89 Prelude is the same.

 

oh im not asking about the 88. but a 89 si tranny bolt on with my 91 si crx. should be no problem right with clutch and everything?

 

Yup the 89 will work in place of the 91 just fine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by S9i1R &raquo;</TD></TR><TR><TD CLASS="quote">

close, it's 21 splines on the '88 and only 20 on the others</TD></TR></TABLE>

thx for correcting me... i know where the link or info i got that out from but i was just too lazy to look for it...

 

good info. so it would be wise to use a 90-91 clutch disk on an 89 ?? since the disk is larger?? better upgrade if you are gonna get a new one anyway? right? I have a d series tranny and dont know what year it is, so i will gamble with a 90-91 clutch setup. Hope its not an 88...
manny

 

Im pretty sure you would need the 90-91 flywheel also.

 

IIRC the 90-91 have a 35mm bearing and 88-89 have a 40 mm bearing...it makes a difference if you want to go with a LSD...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mannyman &raquo;</TD></TR><TR><TD CLASS="quote">good info. so it would be wise to use a 90-91 clutch disk on an 89 ?? since the disk is larger?? better upgrade if you are gonna get a new one anyway? right? I have a d series tranny and dont know what year it is, so i will gamble with a 90-91 clutch setup. Hope its not an 88...
manny </TD></TR></TABLE>

well i got better info you can use the clutch disc and flywheel from any 92-95 civic its same size as the 91 not the 90... and its lighter...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxgator &raquo;</TD></TR><TR><TD CLASS="quote">IIRC the 90-91 have a 35mm bearing and 88-89 have a 40 mm bearing...it makes a difference if you want to go with a LSD...</TD></TR></TABLE>

88-89 civic/crx si models and 90-91 ex 4dr's have the 40mm bearing. only the 90-91 civic/crx si models have the 35mm bearing. just wanted to let you guys know.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Loaded Butane &raquo;</TD></TR><TR><TD CLASS="quote">Im pretty sure you would need the 90-91 flywheel also. </TD></TR></TABLE>

is this true. doesnt seem it would matter. any confirmation??
manny

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by peiku &raquo;</TD></TR><TR><TD CLASS="quote">88-89 civic/crx si models and 90-91 ex 4dr's have the 40mm bearing. only the 90-91 civic/crx si models have the 35mm bearing. just wanted to let you guys know.</TD></TR></TABLE>
Apparently this is actually untrue. Quaife sells LSDs labelled that way, but Mista Bone has taken a bunch apart and says that the 90-91 Sis all had the same 40mm bearing as the 88-89 and 92+.

And yes, you would need the 90+ flywheel (212mm).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integra_gs &raquo;</TD></TR><TR><TD CLASS="quote">

well i got better info you can use the clutch disc and flywheel from any 92-95 civic its same size as the 91 not the 90... and its lighter...</TD></TR></TABLE>

i thought the 92-95 clutch disc was a little larger,
but sometimes when i think my brain hurts

 

88 and 89-91 are the big differences, on input shaft. 88-89 and 90-91 are internal differences (bearing size differences.)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxgator &raquo;</TD></TR><TR><TD CLASS="quote">IIRC the 90-91 have a 35mm bearing and 88-89 have a 40 mm bearing...it makes a difference if you want to go with a LSD...</TD></TR></TABLE>

Are you a ****** psychic? I was gonna post that exact question. Can you hook me up with some Louisiana lotto numbers?