Six cylinder capacity increase to 2.7 ???

[BlackCabrio]

I've been thinking about the 2.7 trick - will this work with a 1990cc block? Would need to change the final drive ratio, too, or have too many revs and too much fuel burn on a motorway. Any other mods required? ECU? Injectors, manifolds?


MONSPORT42 wrote (in another thread):
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It's the fairly standard conversion using the eta crank from the 525e to give the longer stroke plus lightweight pistons, etc, etc. I also have a MAF conversion which increases throttle responses and helps to overcome the torque converter 'lag' a bit. The car's in the Members E30s - 2.7 section at the top of the page although I've had a few things done since the spec was written. If you go the the tuning route, go for torque enhancement rather than bhp alone. A lot of the obvious tweaks like induction and exhaust can push the available torque up the rev range and you can end up with little improvement in normal driving situations - i.e. away from the lights!
I'm no guru on the subject - this is just from my own (expensive) learning curve!
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[E30Adam]

I've been thinking about the 2.7 trick - will this work with a 1990cc block? Would need to change the final drive ratio, too, or have too many revs and too much fuel burn on a motorway. Any other mods required? ECU? Injectors, manifolds?

Yes you could use a 2.0l block but would need the bores enlarging to 84mm. You would need to change the final drive as the 320 usually has a 4.10 diff which is small case and would probably break. Acceleration would be rapid but it will just run out of revs too quickly.

Have a search through the forum, there's a lot if info on this subject and most of your questions will probably be answered in other threads.

[BlackCabrio]

Thanks - that's helped me make my mind up - I'll go for some less radical mods first.

Like the new sound system I put in this week. May the journey take longer!

Seriously, I thoink I'll start with the bbtb and chip mods. It's just I've got an exhaust manifiold stud sheared, and that looks like a headoff job, so my mind wandered into what else might be worth doing at the same time.

[Karan]

id highly recommend the 2.7 conversion, ive had one for nearly a year now and cant really fault it-just gota be careful in the wet

a good one will do 0-60 in 6secs flat which is nice

Karan

[BlackCabrio]

Impressed!

What does it do to the insurance premium? I'm paying a ridiculous 150 quid at present (over 50, rural location, 10k/year mileage, full ncb too).


Which is the cheapest thing about owning an E30 so far !

[Karan]

im 19 and insuring it as a 325, as the block no. still states 325i.

i guess ure premium would go up but not that much

if ure on msn i can send u a couple of vids that will show u what it can do

Karan

[BlackCabrio]

I'm not on msn, but I've got a fast connection at work - can u put them on your punniracing site? Just seen the spec of your car there!

[Karan]

that site is made and run by my uncle, but will get some up in the future, i think there's still limited space on there