Hey everyone.

I was just had a question about a type R swap.. Has anybody done a B18C5 or B18C (JDM) swap, with the B18b tranny?? Im sure the swap has been done before, so I was curious of the Advantages and disadvantages of that kind of setup.

If someone could inform me on that question, id really appreciate it.

 

If your going boost i would use that ls tranny, if not get an itr one, or b16. You"ll be much happier.

 

Advantages with a B18B transmission is that it's longer ratio's meaning turbo is a perfect set up for this tranny.

Disadvantage is longer gears/ratio's.

 

Anyone for layman's terms?

B18B (LS) tranny = long gear ratio's
B18C (GSR) tranny = shorter gear ratio's than LS
B18C5 (Type-R) tranny = shorter gear ratio's than GSR
B16 tranny = hella short gear ratio's

Me and Layman go way back

 

that pretty simple terms but im going to add a bit on what to go with depending on your setup. its would be to long on explaining why but if your going all N/A u would want the shorter gear ratio but if u your going turbo or supercharger u going to need the longer gear ratio...

 

Wrong.

Shorter gearing is always quicker. Closer gearing is always better.

The old myth of "longer gears for boost" has been debunked so many times, its like repeating your mother saying "if you keep making funny faces it will stick that way", or the old grease monkey repeating "you need backpressure for low end torque". They're all wrong.

 

Ls tranny useless only good for turbo highway runs not good for drag racing thats my 2cents

 

Oh, ok. thanks a bunch guys. Guess the best tranny for all motor, would either be the b16a or the ITR tranny. I only ask, because I found a b18c from an accidented inetgra, without the tranny, for a really good price. Maybe ill pick it up and look around for a b16 tranny or gsr.

Thanks again for your help and prompt replies

 

the only issue with the shorter ratio'd transmissions are that just dd'ing them around is a pain in the ***. For example, you will go ~80mph with a B18B tranny and be registering about 4k rpm.. where as with even the B18C(GSR) tranny you will be up at around 4.5-5k and the B16 tranny is higher than that! So you lose MPG on the highway but gain a TON in acceleration due to the short gears.

My suggestion to you would be to really determine what the car is used for before swapping the tranny, if you find yourself using the car as a dd(daily driver) then you want the long gear ratios in 5th [which you could always swap, they sell FD kits as well].

my .02 goodluck with the car

 

this is all true, the only reason some may play with longer ratios is to be in gear X at the end of the 1/4 mile.

as for as the b16 gears. i'm never over 4k on the freeway and generally around 3500 when i'm driving 65

 

Thats wrong
With an ls tranny on my b18c1 or idk what kinda tranny o have in there...im tinking LS 5th gear...i go 80mph reving at exactly 3.5k

 

My integra w/ the old ls tranny/motor was exactly 3200rpm @ 110km. My new jdm b18c swap w/ s80 lsd is 3500rpm at 110km, just under 70mph.

I usually always do about 110-108km's on the highway between my house and town, I have noticed only a slight difference in fuel consumption in my teg as it was before as is now. I average around 500km-550 w/ mixed city/highway driving but i know theres more in the tank, usually only takes about 40 to 45 litres. (50 litre tank, chevron 94 only in it now )

 

this is spot on

100kmh=62mph for the quick math. the s80/lsd he mentions is actually the j4d 96-97 spec or all yeard usdm spec ITR trans which uses the 4:40 ring and b16 gears.

 

I said about 4k, which is around the ballpark cause i was guessing.. i dont write forums posts and drive at the same time :[ good info all around

 

go B16 tranny with a LS 5th gear. fast but then good gas mileage on the highway/freeway.

 

OP: lots of these ^ responses are false and warrent no real info

You will not notice any increase or decrease in gas milage between trans. honestly it will be minimum, and unless you are a MPG freak like me and record everything you wont notice. BUT with a higher final drive ratio like a 4.40 you are actually pushing the gas pedal down less to make the car go faster, inturn getting better gas milage. I always got better gas milage in my ITR than my GSR or LS. Its about throttle input not gear ratio's.

F/D's:

GSR-4.40
B16-4.40
ITR-4.40 (EXCEPT n3e 98+)

If you have no concern weather you have LSD I would reccomend a GSR tranny, I think the gears were matched great and it felt the best on the highway due to the slightly less aggressive 5th gear. I would avoid a LS trans if is bottom of the bucket for Bseries tranny's. Hope this helps.

 

I say get the type r tranny and have some nice stock lsd. I have the optional lsd in my jdm gsr tranny and love it.

 

not if he uses the stock p73 ecu, with a 5800rpm crossover the 1-2 shift will drop him out of vtec unless he bangs at lightspeed and spins the tires into second.

as far as not caring if you have an lsd. believe me, you will like it. they offer FAR better traction in snow, wet weather standing starts and of course powering out of corners

 

This is true. But is it not also true that it requires more throttle input to keep the car cruising @ 80 mph ~4.5k RPM...
instead of cruising @ 80 mph ~3.5k RPM?

Yes, yes it is.