E30 Zone

ive got a m42 is in my cabby should i stick with it or put a m20 in it i am buying 1 tommoro. getting cold feet i think.

M50

haha its not as easy tho

tinnaM42 wrote:haha its not as easy tho

Depends who`s doing it and choice of parts used

wot u reckon it would cost?

tinnaM42 wrote:wot u reckon it would cost?

well you already have an M42 gearbox so may aswell use that.
Engine will be about £250 on average then you probably have another couple of hundred quid in engine mounts,exhaust manifold,servo etc.

M30

Answer to the question id go for the M20
If i was in your shoes id go for M50,
as eko said you already have the correct g/box and its not all that difficult!

m20

m50b25 ftw! although otherwise i would say m20b25 - makes better noises than m42!

eko wrote:

tinnaM42 wrote:wot u reckon it would cost?

well you already have an M42 gearbox so may aswell use that.
Engine will be about £250 on average then you probably have another couple of hundred quid in engine mounts,exhaust manifold,servo etc.

Exhaust is your biggest problem,if you are handy and good with a welder you can make your own. The custom built one is very good but also very expensive.

m50

m20 if you have to

M20 sounds smooth even at even at idle

I want your M42 if its going ;)

Ive got an m20 on mine and im contemplating gettin an m50. As im no expert im wondering
would it be a straight forward swap or would i need to change gearbox, wiring loom and get a
custom manifold etc. would i need custom mountings aswell and is it worth swapping?

can i use the same prop thats on mine?

325 prop needed with an M42 gearbox on am m50 swop

CAN I USE A M42 PROP ON A M2OB25 ENGINE AND BOX

no its to long you need an m20b25 prop

ImysE30 wrote:M30

The only way forward imo.

if i use the m40 diff and a m20b25 box would a m20b25 prop fit at both ends??

I wouldn't replace an M42 with an M20, ever. Stick an M50 in it, 4 valves per cylinder is the right way to go!

i have a m20,b20 prop if needed?
i'm just putting the m20 flywhhell clutch and starter on mine,it's chipped up and has a pan filter but i'm going to do all the easy mods on it before i decide where i'm going with mine.
i like good mpg combined with good speed.
a hard combination to achieve.the fly and clutch will give much better response [throttle]

if i use the m40 diff and a m20b25 box would a m20b25 prop fit at both ends??

tinnaM42 wrote:if i use the m40 diff and a m20b25 box would a m20b25 prop fit at both ends??

yes, all e30 boxes and props have the same fixtures and fittings so all are interchangeable within reason