Ok well I have come to you R Gods for a simple question :

I have a gsr/hatch and was pissed when I didnt get an lsd tranny like I was supposed to with the swap. Anyways a year has passed and I have been thinking about swapping out my gsr tranny for an R tranny.

What would be the benefits of having this shorter ratio tranny? I already stay in vtec through the gears, so I am wondering how this would play out with my gsr motor?

Also a friend had told me that I could sell my gsr tranny for 600 and buy an R for 900? Is this true? If so, it might be cheaper to do a whole tranny swap, then to just swap lsd's.

Thanks

 

Just get it for the LSD.

 

ITR trans is a great match for a GSR. If I had the graph in front of me, I'd show it to you, but I don't know where it is. It's the graph that shows applied tq across the rpms for each gear on the stock gsr, gsr w/itr trans, and stock itr.

Honestly, that's probably one of the best modifications you could make to it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cheezthis &raquo;</TD></TR><TR><TD CLASS="quote">ITR trans is a great match for a GSR. If I had the graph in front of me, I'd show it to you, but I don't know where it is. It's the graph that shows applied tq across the rpms for each gear on the stock gsr, gsr w/itr trans, and stock itr.

Honestly, that's probably one of the best modifications you could make to it. </TD></TR></TABLE>

You can use this to give you an idea of the gear map..

http://reverendsgarage.net/ind...r.php

...The GSR powerband is another story

 

I would just get it (ITR tranny) for the LSD. You can buy an ITR tranny for around 1000-1200. If you buy just a LSD by itself and pay the labor to get it installed on your gsr tranny, you would probalby end up paying just as much. The overall shorter gearing helps for acceleration . The powerband of the GSR isn't so extraordinarily different than the ITR. Its still peaky and its still better to land higher in the power band. Whether its faster or not, i can guarnatee you you'll have more fun with the ITR tranny.

 

cool thanks guys....also with a jdm R tranny I would have final drive right? Not sure what effect this does for the car, but please explain if you know.....

 

there is a final drive in every tranny/differential. this effects the gapping of gears. the higher the final drive i.e.(4.785..jdm type-r) the GS-R tranny has i believe a 4.4. basically the gear ratios are closer, and it wont bog everytime you shift...like in an LS tranny.

-Deven

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slow_Em1 &raquo;</TD></TR><TR><TD CLASS="quote">there is a final drive in every tranny/differential. this effects the gapping of gears. the higher the final drive i.e.(4.785..jdm type-r) the GS-R tranny has i believe a 4.4. basically the gear ratios are closer, and it wont bog everytime you shift...like in an LS tranny.

-Deven</TD></TR></TABLE>

Cool thanks, yea see thats what people had said was the benefit of having the shorter gear ratio, but mine doesnt bog the least bit and never goes bleow vtec.....

 

Don't forget the JDM R tranny has the 4.78 Final drive. that will make your acceleration MAD, but you will NOT like it on the highway. You'll turn 5100RPM at 80...and top out at 125...that's the tradeoff. For a track car, that tranny is sick, but for street my choice would the the USDM 4.4FD tranny.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by steven975 &raquo;</TD></TR><TR><TD CLASS="quote">Don't forget the JDM R tranny has the 4.78 Final drive. that will make your acceleration MAD, but you will NOT like it on the highway. You'll turn 5100RPM at 80...and top out at 125...that's the tradeoff. For a track car, that tranny is sick, but for street my choice would the the USDM 4.4FD tranny.</TD></TR></TABLE>

ahhh....something to think about.

So should I go with the usdm r tranny?

 

Either tranny is awesome. The GSR powerband works very well w/the the ITR gearing. Then you can sell your GSR trans for a good dollar, and only spend a few hundred in the end.

 

While the JDM ITR tranny does have the 4.7 FD, it also has GSR 4th and 5th gears, so it wouldn't be exactly like a US ITR tranny with the 4.7 swapped in, just to let you know. As for shorter gearing, sticking the 4.7 FD in a US ITR tranny will be like described above, and even though cruising would start to suck, it's one of the modifications near the top of my list.

 

can you still get these USDM ITR trannys? this sounds interesting

-aoib0t, who continues on his "lil GSR that could" projects

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cheezthis &raquo;</TD></TR><TR><TD CLASS="quote">ITR trans is a great match for a GSR. If I had the graph in front of me, I'd show it to you, but I don't know where it is. It's the graph that shows applied tq across the rpms for each gear on the stock gsr, gsr w/itr trans, and stock itr.

Honestly, that's probably one of the best modifications you could make to it. </TD></TR></TABLE>

If you find this or anyone else has it, can you post it or email it to me? I am very interested in this for my car, and I want to know how significant of a mod it will be.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sscguy &raquo;</TD></TR><TR><TD CLASS="quote">While the JDM ITR tranny does have the 4.7 FD, it also has GSR 4th and 5th gears, so it wouldn't be exactly like a US ITR tranny with the 4.7 swapped in, just to let you know. As for shorter gearing, sticking the 4.7 FD in a US ITR tranny will be like described above, and even though cruising would start to suck, it's one of the modifications near the top of my list. </TD></TR></TABLE>

So your saying that the jdm itr tranny will not yield a bad cruding speed, but when the final drive of the j-spec tranny is swapped into a usdm itr tranny, then you will have a low top speed?

Im confused, or maybe I just read it wrong.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dohcVTEChatch &raquo;</TD></TR><TR><TD CLASS="quote">So your saying that the jdm itr tranny will not yield a bad cruding speed, but when the final drive of the j-spec tranny is swapped into a usdm itr tranny, then you will have a low top speed?

Im confused, or maybe I just read it wrong.....</TD></TR></TABLE>

Huh? I'm confused too. The rpms at any given cruising speed will be different; for the JDM ITR, at 80mph it'll be, let's say 5000rpm (I have no idea of the actual number, just throwing something out to demonstrate). For the USDM ITR at the same speed it might be 5400rpm or something. I have no idea if the difference would be that drastic, but you should get the idea.

Edit: For the USDM example that's USDM tranny with JDM FD, just to be clear.

 

you will get the benefits of having an lsd and shorter gearing which helps out greatly in accleration.

 

gsr with itr lsd would work fine + if u go turbo would be nicer!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ek4hatch &raquo;</TD></TR><TR><TD CLASS="quote">gsr with itr lsd would work fine + if u go turbo would be nicer!!</TD></TR></TABLE>

No thanks......N/A for this gsr


Ok so in conclusion, which tranny should I go with and is there a difference between the two in the gearing?(us v. j-spec)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by steven975 &raquo;</TD></TR><TR><TD CLASS="quote">Don't forget the JDM R tranny has the 4.78 Final drive. that will make your acceleration MAD, but you will NOT like it on the highway. You'll turn 5100RPM at 80...and top out at 125...that's the tradeoff. For a track car, that tranny is sick, but for street my choice would the the USDM 4.4FD tranny.</TD></TR></TABLE>

Not true.

The 98 spec R tranny has gsr 4th and 5th gears which is longer and thus you end up having the SAME rpm in 5th gear as the usdm fd/5th gear combo.

98 Spec R &gt; USDM R

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B2FiNiTY &raquo;</TD></TR><TR><TD CLASS="quote">

Not true.

The 98 spec R tranny has gsr 4th and 5th gears which is longer and thus you end up having the SAME rpm in 5th gear as the usdm fd/5th gear combo.

98 Spec R &gt; USDM R </TD></TR></TABLE>

Ok.....so when you say "98 Spec R &gt; USDM R"

You mean the jdm version or both us and jdm version tranny's?

If so, are all other R tranny's different then the 98 spec?

 

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

Ok.....so when you say "98 Spec R &gt; USDM R"

You mean the jdm version or both us and jdm version tranny's?

If so, are all other R tranny's different then the 98 spec?</TD></TR></TABLE>

he means jdm 98 spec. all the itr transmissions in us/cdn are the same as jdm 96-97 itr and the ctr.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dohcVTEChatch &raquo;</TD></TR><TR><TD CLASS="quote">
Also a friend had told me that I could sell my gsr tranny for 600 and buy an R for 900? Is this true? If so, it might be cheaper to do a whole tranny swap, then to just swap lsd's.

Thanks</TD></TR></TABLE> Ive done exactly that. sold my GSR tranny and bought an ITR tranny. definitely a good choice! much better than finding a used ITR LSD and dropping that into your GSR tranny.

so just find a usdm itr tranny for $900-1100 and then sell your gsr tranny for 500-700.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by db8sirg &raquo;</TD></TR><TR><TD CLASS="quote">

he means jdm 98 spec. all the itr transmissions in us/cdn are the same as jdm 96-97 itr and the ctr.</TD></TR></TABLE>

Ahh thats right....now i remember. The best motoring video showed the two R's in a 1/4 mile and the earlier one caught the other due to its longer gearing in later gears

 

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

Ahh thats right....now i remember. The best motoring video showed the two R's in a 1/4 mile and the earlier one caught the other due to its longer gearing in later gears </TD></TR></TABLE>

Yep........they finish in an exact tie if i recall correctly!