Whats the difference between an i TB and an is TB?

[Turf1600]

I hear people talking about the IS tb like it's something different - probably bigger. What is the difference? Is it like 55mm vs 60 or something similar? I'm doing a turbo so 5mm wont matter. Anyone have one of either to sell me?

[nando]

there is no difference. the motors are exactly the same. the only differences were fairly minor; suspension, LSD, sport seats, and some cosmetic stuff on the outside.

[fretburnr]

both the 'i' and 'is' have the same engine... M20B25.

the earlier (pre-88 ) ones have a different cooling setup, and some minor different details, but for any given year 'i' and 'is' are functionally the same.

[Turf1600]

Thanks. i'll post in the WTB section.

[winstontj]

if you end up getting that TPS and will sell it to me I'll give/trade you an M20 TPS (the big one). I have a bunch of them. I might even have a fuel rail for you by then too :-)

There are two different sizes. I think the eta ones are smaller - but not 100% on that. I know that I've pulled about 20 so far and every now and then I come home with the smaller one. The yards have always been nice enough to let me switch them out for the larger one.

[Turf1600]

I actually bought a new fuel rail today for 25 bucks. Too much, i know - but im tired of hunting for one. I got some volvo injectors rated at 39 lbs\hr and some other nifty stuff too.

if you end up getting that TPS and will sell it to me I'll give/trade you an M20 TPS (the big one). I have a bunch of them. I might even have a fuel rail for you by then too :-)

There are two different sizes. I think the eta ones are smaller - but not 100% on that. I know that I've pulled about 20 so far and every now and then I come home with the smaller one. The yards have always been nice enough to let me switch them out for the larger one.

[Turf1600]

OK - So I won them both. how about you sell me a tb and if both of the ones i bought are correct I'll send you one for cheap. I don't have a tb to mount it on therefore i have no way to see if it's the right one.

I actually bought a new fuel rail today for 25 bucks. Too much, i know - but im tired of hunting for one. I got some volvo injectors rated at 39 lbs\hr and some other nifty stuff too.

[318isbmw]

both the 'i' and 'is' have the same engine... M20B25.

Or a m42 as in the 318.