Cant seem to find much , but how would this turn out? CTR sucks having such high rpm on the freeway. would any other transmissions be better on it?

 

Sounds to me you have completely the wrong engine for you. The b16b makes decent power at high rpm, actually "all" power at high rpm, it was designed that way

Putting an LS tranny would keep that engine out of its power band often and feel gutless, not recommended

 

Deetz, you might want to double-check what you just posted...

OP, there is no better factory B series transmission than the CTR/ITR. Putting an LS transmission on a CTR motor would be like putting training-bra-**** on Jennifer Lopez.

 

Opps, spell check got me on that one, lol fixed!!! Meant LS tranny

 

Just replace your 5th gear with one from an LS trans..

 

Just the 5th gearset won't do that much. Ideally you would swap the 5th set and the FD set, but that's a lot of work for not much gain.

 

Then i think he just has the wrong car if he's doing highway driving and doesn't like the gearing.

Personally i LOVE the gearing on my ITR trans and B18, which is similar on highway driving in 5th, as long as you're doing the speed limit. Once you start going 70+ cruising with traffic the motor is screaming, but the power is right there when you need it.

I say enjoy it!

 

Maybe because he can't find a b16 tranny or needs to get his car on the road that he had to resort to an LS? It will work, its just not what we would used with that type of engine.

 

I think he is saying he already has a CTR trans and doesn't like it for highway driving.

 

In the car world, there will always be trade-offs. Transmissions are a prime example of that. The CTR/ITR transmission came off of (you'll never guess!) a Civic or Integra Type R. Those cars weren't made to be "grocery getters" or "highway cruisers", they were made to be fun, all-natural driver's cars that are equally happy on the back roads as they are on a real race track. By nature, the important parts are made for just that - happy, spirited driving. The LS, GS, RS, SE, and GSR, by comparison, are fun, kind-of-sporty get around cars. The DX, LX, and EX are straight up grocery-getters and people movers. They weren't built to be flogged around a track - they were built to get you to work, or the grocery store, or off on that family vacation.

Expecting a CTR/ITR - or for that matter something with a full CTR/ITR drivetrain - to just be a put around car is silly, just like expecting a stock DX to rip around the Nurburgring is. I'm not saying it's all or nothing, though. Of course you can mix and match parts, but a true track monster will not be a great daily driver, and a great daily driver will never be a track monster. It's the nature of the car world - with rare few exceptions, you can't have your cake and eat it, too.

 

People worry about highway revs too much. A LS trans would ruin the B16B. Makes the swap pointless.

The USDM 99-00 Si has the same gearing as the CTR/ITR 4.4 FD trans.

The B16B makes no power down low. The stock ECU doesn't even engage VTEC till 6500RPM (annoying). Why anyone would want a LS trans on it is beyond me. You're not going to gain any appreciable MPG. You're just going to make the car boggy and annoying. I've driven a B16b with a LS trans. It was awful. Each gear went for about 16-17 years. There was a giant gap between VTEC crossover in each gear.

OP....let the motor rev out on the freeway. Ignore it. Put a cap over the tach if it makes you feel better. Don't ruin that engine swap with a long gearing transmission.

 

I would also recommend staying away from the LS 5th gear swap. You'll regret it when cruising around town at 40mph and being in between gears. Or cruising on the highway and needing to accelerate the tiniest bit. Not worth it for 0.5mpg @80 mph.

 

If you swap out the FD on the ls to the one in a b16, which has been done before, I think you'll be fine. Me and one other guy were discussing this on another bbs and he actually did it. You'll need the FD and the shaft, just swap over the gears and synchros and put everything back together. Make sure everything is within spec and you should be fine.

 

Thanks for all the replies guys! a guy and I were talking about it , which is why I brought it here.

got mine chipped and set for 6000 and man what a difference But the High revs on the interstate scare me a bit. but with a CTR, theyre made to rev high right?

 

Thanks for all the replies. I love my CTR , she pulls hard and is enough to say my car is a sports car (especially when all these scion TC kids get dusted, not saying much but it shuts them up)

I guess there is a trade off for everything. since I will have to deal with it would an ITR tranny feel better?

 

So what do you have on there now? **** it........keep what you have............

 

no, the ITR and CTR transmission have the same gear ratios (unless you get a jdm itr transmission with an even shorter FD)

 

B16B's have like a 76 or 77mm stroke and an excellent rod/stroke ratio (long rods, short stroke). You can rev them forever. There's 10-12kRPM enduro motors out there that are based on B16B rotating assemblies.

I have driven short gearing cars across country (S2000 and ITR). I drove my EM1 80-100 miles daily (mostly highway) and would sometimes cruise for 10 mins or so at 120-130mph (IIRC, 7500RPM). Same with my GSR with a B16 trans. None of these cars ever had any issues. There are 300k mile EM1's out there with no problems. Honda wouldn't design a street car for short life.

Keep an eye on oil level, as high revs equate to slightly higher oil consumption. That's it. Reducing trans ratio in a 1.6L is an awful idea.

 

98+ spec ITR transmissions have a 4.78FD, but they have a GSR 4th and 5th gear. The highway revs are close to the same...but yes....the 4.78FD JDM trans does maintain slightly higher revs.