I have tried to use the forum search, but it apparently isn't working.

I have a 91 hatch with the 4 speed tranny. I also have a 5 speed tranny sitting in my garage. I'm wondering if it is worth it to swap out the 4 sp for the 5 speed.

I am currently averaging 40 mpg and don't travel much on the interstate.

 

worth it for what?

 

4 economy stick with the 4 speed. but in my opionion i love the 5 speed. the 4 speed just makes it so slow

 

Better gas mileage, better acceleration. Why would Honda have offered the 4 speed anyway?

 

I'm in the same boat. I have a 4 speed and i drive alot on the highway. I'm thinking of doing a 5 speed swap. Just so my RPM's will be lower at speed.

 

Swap it. I am glad I did. Acceleration was better and gas mileage didn't change much. It's also more fun!!

 

If it ain't broke, don't fix it

 

I'm with him, I did a 4 to 5 speed swap on my old hatch. Thing would barely keep pace going up a slight incline in 5th. I should have just left the damn 4 spd in. Waste of time in my opinion unless the trans is in bad shape.

Just go down to a local junkyard, get yourself a 5 speed shift ****, screw it in. About the same results for a lot less work.

 

Just swap it in.

 

Funny stuff, but true, my 5sp never sees 5th gear even on the highway, I'm sitting at 2k doing 65/hr in 4th. I get like a zillion miles a gallon too.

 

I just went for a short drive, my 5 speed barely makes it up a hill in 2nd. I can't even go uphill in 4th. It's going to be a pain in the *** to change too, not worth the slight gain in my opinion

 

it also depends on what 5 speed transmission you put it. results are doing to be different if you have an hf tranny vs an si tranny. theyre geared different. the hf is geared for fuel economy while the si is geared for acceleration. you'll be running ~3500-4000rpms on the highway going 70-80mph with the si. compared to the hf which is a lot less.

 

The 5 speed tranny I have is actually still on a motor I have sitting in my garage that came out of a 91 hatch DX. I don't know if the clutch was changed in my hatch I'm running now w/160,000 miles on it so I was thinking I might do that. I put a clutch kit on the other engine I have and ran it for about 40,000 miles, so it should still be good. So I thought if I have the tranny off anyway to change the clutch, would it be a good idea to put the 5 spd tranny on.

 

it would be.

at least if you lived in florida like me. we dont have many of those things those other people were talking about...."hills"? the biggest "hill" around me is the bridge leading over to the beach

 

With my 4speed I'm at 3K RPM at 65Mph. If by swapping a DX 5 speed I can get my RPM's down lower and get bettter gas mileage. right now I'm only getting 32MPG. That's mainly highway running 60-70.

 

cheaper

std didn't come with ANYTHING

 

Yeah, I know. I've pretty much upgraded my STD to a DX with my spare DX parts, except the 5 speed tranny. I know they made the STD as a more economical vehicle to purchase, but It seems as though they made the 4 spd just for the STD? Or was the 4spd more fuel efficient (though maybe less speed as the motor didn't have as much horsepower as the DX motor)?

I did have an LX sedan that had the 5 speed but I don't remember the MPG.

 

I would say it depends on what your plans for the car are.

 

I sit at 3.5k at 80 mph in 5th gear on a dx tranny.

 

not more economical, just cheap lol

the dx trans will net you better mpg's at cruising altitude than the 4 grinder.

 

I hear ya there!

I rarely travel above 70 mph in Vermont. Most of the time I am not on the interstate and am traveling 55 mph, which barely puts me in the 5th gear range.

 

my STD is a CX cuz it is canadian
5 speed standard.... FTW.
But seriously, I can't go up steep hills in 5th gear. I end up downshifting to 4th.
5 speed is better than 4 speed. Better gas mileage. Straight up. At 110km/h, I sit at around 3k.

 

If your still 3k RPM at 70MPH with a 5 speed then that is just about the same as my STD 4 speed(+/-200RPM's).

 

I have a Crx Si, sits at 3500rpms at 70/75 mph. 4000rpm around 85/90

 

shorter gear ratios would allow you to be able to control your RPMs better, right?