has anyone used the 3.1 stroker kit from I.E.

[TS87325IS]

if so, is there anything not supplied with this kit that needs to be done , any modifications that it requires , how was the fit and finish, how well dose it perform , and was it worth the money? thanks.

[euroshark]

In my humble opinion, there is no reason to spend the 2-3 grand on a stroker kit for an M20 when you can pretty much complete an M30 swap for less than $1500 (if you are thrifty)... I just can't see how it would be worth the money since you won't get near the same amount of torque, you will have a smaller torque spread, and M30s are bullet proof.

[TS87325IS]

how much hp dose an m30 put out? what other mods do you have to do , which transmission do you use and what not? thanks.

[JPL]

208 i believe for late m30's. you can't use the stock tranny, you should use the one attached to the engine you aquire. and you have to modify the engine mounts.

[TS87325IS]

then I belive I would prefer a stroker kit , as I don't want to modify mounts and trasmissions and what not , the stroker's sound more economical and stock looking is always good too.dose anyone have any experience with any of the stroker kits available? thanks.

[Hadrian]

Ask it in the M20 section :)

[JoeMadoo]

There is no replacement for displacement, Anyone in this section will tell you that a stroker is a waste of money.

[bimmer_adam69]

yup....i was gona do all that....screw that after aquiring a 635 and feeling that torque i could only imagine in an e30....3.1 for all that work.....or 3.5 stock and build from there hmmmmmm

[euroshark]

You don't modify the engine mounts, you get new ones... Less than $300 and your motor is in.

The tranny isn't a big deal either, it slides in and if you get the right one, even the shift linkage won't require any modification.

Don't be scared of the swap, just get educated!

...Or go with the stroker...

I think everyone with an m30 swap is happy to have the extra mountain of torque though. 211hp and like 230ft/lbs, of which around 85% is available from 2000rpm to over 5000rpm (the torque spread is what I vaguely recall from the M90 motor, but the B34 or B35 M30s should be very similar.)

[E30Idea]

I am a newbie so please excuse me, but what cars did the 3.1 and 3.5's come in that you all would recommend finding for a donor car?

[euroshark]

The 3.1 that in mentioned earlier in the thread is a stroker, so it would start as either a 2.5 or 2.7 liter M20, the latter being the engine in your 325e. The 3.5 is an M30, and also came in 2.8, 3.0, and 3.2 liter sizes. The M30 is found in E12, E28, and E34 5 series, E24 6 series, E23 and E32 7 series cars from 1975 to about 1993, and in older models like the E3 sedans and E9 CS coupes.

Any M30 can fit your car, but different years will require slightly different motor mounts if you buy them pre-made.

[sticksdaman]

what kinda mileage is a 3.2 stroker powered e30 lookin like?

[JoeMadoo]

I had no idea you could squeeze 3.2 liters out of an M20

[Hadrian]

M30 is heavier, plus if you do a 3.1 litre M20 it will be freshly built

[SpunkyE30nOk]

M30 is heavier, plus if you do a 3.1 litre M20 it will be freshly built

The m30 weighs 58 more lbs than the m20 and if you use engine pos III the m30 sits further back in the e30 than the m20 still keeping its 50/50 balance..ok maybe 51/49 but thats still better than any new audi's 60/40 ;) . m30s power is its torque curve not the hp (but more hp the better right) . not matter what gen m30 you have over 200ft lbs in stock trim. (who's gonna keep their m30 stock..really) I thought about turboing my m20 but i auto-x and i need to go go go now now now, not wait for boost then go. A m30 in a e30 = e36 M acceleration (atleast) ...3.1 stroker kit= e46 330i accel x (maybe)