1.5 MT same as 1.8 MT
 

Is the 1.5 manual tranny the same as the 1.8?

I don't think so but don't quote me on that. I'm thinkin that it would be slightly different because the ex and lx motors are dif sizes and because the wheels are dif stock tires. Different wheels may cause the transmission to have different gear ratios. Thats what I think but the others will know more than me. Although from what i hear the trannys from da 1.5 will fit da 1.8

the F and G will fit up on the 1.5 or 1.8 . but for your Question you have to specify what year car you have for more info

98 1.5L. i want to know if the 1.5l tranny is the same as the 1.8l, and will hook up to the 1.8

well my tranny went today! R.I.P. New question: Does a tranny from a gen1 1.8L fit a gen2 98 1.5L? THIS SUCKS. well i guess it forces me to do my conversion sooner. good side to everything huh?

If you use a tranny from a gen1 1.8 dohc , you may need new axles, different flywheel from 1st gen and a clutch from a 1st gen 1.8 dohc .. becuase the G-tranny has more splines that the F-tranny.

you will also have to use the rear mount brace from the 2nd gen to brace in the tranny.
Bruce

I dont know if its the same for US modles, but, the 97/8 CDN 1.8LX Touring Edition uses the same tranny as the 95/6 1.5l as the gearing is closer together...i know, because i just put my new clutch in in the spring...

K-booooooogie what's up
-----------------

The 1995 1.8 uses the G-series
all other 1.5 and 1.8's use the F-series..

2nd gen 1.8L protege are EXTREMELY rare...

Kris have you seen any 1.8's in the junkyards up there ...
In the near future maybe you could source some rear discs ..
or I may have to try and fit a 1st gen rear Hub on my car.

they arent that hard to find. there is one a state away from me in good condition. ill take about a 3 hour trip up there with a pick up and get it. no biggie

Ok let me come back to this and ask a new question. Im buying 97-98 1.8L. Will my already in place 97-98 MT fit the 1.8l? Im talking mechanically here. I know i need wire harness, ecu and the works but will a 1.5L 97-98 MT bolt on to a 1.8L engine of the same year?

Ya it should. but you may tell the difference in transmission performance. This yet again comes down to gear ratios. The 1.5l and 1.8l may have different gear ratios so your car MAY perform better but i'm not sure. Your car will surely be running though and thats what really matters.

Talk about a fuzzy subject. From what I can gather, they're completely interchangeable.

So the 95-98 1.5 was the F25M-R with the following gear ratios:
1st 3.416
2nd 1.842
3rd 1.29
4th 0.972
5th 0.775
FD 4.105


96+ 1.8 was also the F25M-R but with these gear ratios
1st 3.416
2nd 1.842
3rd 1.29
4th 1.028
5th 0.775
FD 4.105

And for thoroughness, the 95 1.8 was the G25M-R
1st 3.307
2nd 1.833
3rd 1.31
4th 1.03
5th 0.795
FD 4.105

So as you can see, on the F series trannys, only 4th gear is slightly different.

One of the Canadian members here has a later model 1.8L with the G-series transmission, too. It was a touring model. You can tell by how many RPMs you're at on the freeway. 100km/h (62mph) would be about 3,000RPM on a G-series.