i need some help deciding what to do with my tranny. Right now im running a stock LS tranny and ive got two choices, either drop in an ITR LSD and replace a few bearings or buy a used ITR tranny.

Is there any effect on the gearing by just replacing the differential for an LSD? i could do the LSD and bearing kit for under $600 or i could just buy the ITR tranny for a little extra cash... any thoughts anyone???

 

I'd get the whole transmission, depending on the price difference. The ITR ratios are nicely spaced.

Replacing just the differential will not affect the gearing.

 

yea i was thinking the same, the only thing im concerned with on the itr tranny is the final drive. im wondering if its gonna make my car feel like a dog until i go turbo. although the LS tranny is like a semi anyway, so i suppose it cant get much worse...

 

The 4.40 final drive in the ITR transmission will allow the car to accelerate faster in the lower gears. The catch is that you will rev higher in 5th gear.

http://www.allmotorhonda.com/t...s.htm

 

wow that link really helped out, ive been looking for a side to side comparison of the gearing... thanks. Im not planning on dragging or auto-xing, its mainly just gonna be street driven so i dont REALLY need to be doing in excess of 130

thanks for the input, this really helps

 

dude you probably wouldn't go over 130 in a drag race or auto-x

 

i would definitely go with ITR trans, you really cant go wrong with it...since ur going to be street driven, the LSD will help u a lot on traction and shorter gearing lets u accelerate faster...the only problem is, its really hard to find a really good used trans...i would recommend just saving cash and get a brand new one...

 

if u plan to go turbo, u may not want to put in a itr tranny. the lsd is great but the shorter gears in the itr tranny won't allow the turbo to stay on boil very long. as soon as u get to full boost u will be shifting. the ls u have would be the best for turbo. the gears are longer allowing u to get to full boost and hold it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xtremegsr273 &raquo;</TD></TR><TR><TD CLASS="quote">if u plan to go turbo, u may not want to put in a itr tranny. the lsd is great but the shorter gears in the itr tranny won't allow the turbo to stay on boil very long. as soon as u get to full boost u will be shifting. the ls u have would be the best for turbo. the gears are longer allowing u to get to full boost and hold it.</TD></TR></TABLE>

More closely spaced gear ratios is always beneficial.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xtremegsr273 &raquo;</TD></TR><TR><TD CLASS="quote">if u plan to go turbo, u may not want to put in a itr tranny. the lsd is great but the shorter gears in the itr tranny won't allow the turbo to stay on boil very long. as soon as u get to full boost u will be shifting. the ls u have would be the best for turbo. the gears are longer allowing u to get to full boost and hold it.</TD></TR></TABLE>

what?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by the_23rd_letter &raquo;</TD></TR><TR><TD CLASS="quote">i could do the LSD and bearing kit for under $600 or i could just buy the ITR tranny for a little extra cash... any thoughts anyone???</TD></TR></TABLE>

$600 plus a little extra cash!!?! how bout 1200 more.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ernald711 &raquo;</TD></TR><TR><TD CLASS="quote">$600 plus a little extra cash!!?! how bout 1200 more. </TD></TR></TABLE>

ITR tranny costs 1800?

 

Well, keep in mind that you can't just "plug and play" the ITR LSD into the LS tranny. I'm sure you know the final drives are different (LS = 4.266 vs. ITR = 4.400). The countershaft of a 4.400 equipped B-series tranny must also be swapped into the LS tranny. Then your LS gears can slide onto it. The reason is the idler gear on the countershaft is slightly different on the 4.400 shaft vs. the 4.266 one. Then of course you'll need the final drive gear (that will probably come with the LSD, hopefully) because the 4.266 FD gear won't fit on the LSD.

Then you got the bearings.

And yes...the ITR tranny will be quite expensive. Easily over $1K I think.

EDIT: Trust me....after busting my knuckles and wasting so much time, I had to do all that. The countershafts LOOK the same, and the FD gears look the same too, they even have the same number of teeth. But alas, they don't fit.

 

Dropin the knowledge!!!

 

so how well does the ITR tranny, whole thing, go into another b18? pretty much "plug and play" or do you run into some little snags?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shinobijesus &raquo;</TD></TR><TR><TD CLASS="quote">so how well does the ITR tranny, whole thing, go into another b18? pretty much "plug and play" or do you run into some little snags?</TD></TR></TABLE>

Well the entire tranny as a whole, just bolts right up to any B18.

 

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

ITR tranny costs 1800?</TD></TR></TABLE>

sorry i meant how bout 1200 and some change for a used ITR tranny.

i got my tranny used w/ 3k miles for 1400. 98 spec JDM ITR 4.785.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">More closely spaced gear ratios is always beneficial.</TD></TR></TABLE>


With a powerful setup, there's really not much difference between an LS and Type R tranny. The LS will wind up almost as quickly, and you won't have to shift as often. Remember, shifting adds time onto your quarter mile sheet.

If you plan on boosting, get a Quaife or OBX LSD in your tranny. No need to buy an ITR just for the LSD if you plan on boosting.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by apok &raquo;</TD></TR><TR><TD CLASS="quote">
If you plan on boosting, get a Quaife or OBX LSD in your tranny. No need to buy an ITR just for the LSD if you plan on boosting.</TD></TR></TABLE>

i have heard nice things about quaife lsd, id rather go with that then an itr tranny if your boosting

 

what kind of power are you putting down? With a stock or even NA built LS Id go with the ITR trans....with a turbo'd ls id probably stick with the LS or GSR tranny.

 

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

i have heard nice things about quaife lsd, id rather go with that then an itr tranny if your boosting</TD></TR></TABLE>

I'd like to see Quaife produce one ounce of data that their helical ATB unit performs better than the stock Honda helical LSD unit.

Of course, my evidence:
https://honda-tech.com/zero...28924
https://honda-tech.com/zero...89418

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


With a powerful setup, there's really not much difference between an LS and Type R tranny. The LS will wind up almost as quickly, and you won't have to shift as often. Remember, shifting adds time onto your quarter mile sheet.

If you plan on boosting, get a Quaife or OBX LSD in your tranny. No need to buy an ITR just for the LSD if you plan on boosting.</TD></TR></TABLE>

Regardless, the shorter, more closely spaced ratios are still better. But is it better than $1200 to spend on something else? Hmm...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">I'd like to see Quaife produce one ounce of data that their helical ATB unit performs better than the stock Honda helical LSD unit.</TD></TR></TABLE>

Well, the Honda LSD is a very good LSD, however it isn't made to handle THAT much power. With my experience anything over 300whp (or was it just hp), and it can fail. I was making more than that, and it literally grenaded inside my transmission, killing the entire thing. Same with one of my friend's GSR tranny.

 

get the ITR full tranny... i think it would be better than putting the LSD in your LS tranny... unless you plan on building up the tranny for more power... its all up to you!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shamoo &raquo;</TD></TR><TR><TD CLASS="quote">Well, the Honda LSD is a very good LSD, however it isn't made to handle THAT much power. With my experience anything over 300whp (or was it just hp), and it can fail. I was making more than that, and it literally grenaded inside my transmission, killing the entire thing. Same with one of my friend's GSR tranny. </TD></TR></TABLE>

whoa, so how do you avoid that?

 

Avoid wheel hop.