Engine mods

Post Sat Feb 05, 2005 3:22 pm

i will be taking my M20 2.5 engine out soon and want to know if i can do any mods to it

i will most likely be doing the BBTB from the zone
i already have a zone chip too

any other mods that can be done??

can't really affored to do the 3.5 conversion as many would suggest

Post Sat Feb 05, 2005 3:51 pm

I have a 2.7 engine, that may be of use to you for parts.
Feel free to make me an offer, if your interested

Kind regards

Andy

Post Sat Feb 05, 2005 4:03 pm

hey

thanks for the offer, dont mean to be stupid but what kind of parts could i end up using from the 2.7

as most of the work will be done by myself

Post Sun Feb 06, 2005 4:22 pm

Hi mate, the 2.7 eta "eta - economy" engine was used in the E30 325e and the 525e. this engine is setup to give less BHP than a 2.5 but more torque as I believe, As I am aware a lot of guys have done this, conversion, using the 2.7 crank with the 2.5 head, (think the 2.7 head has less cam bearings and the gas flow isn't as good for BHP) so the benifit being you get better BHP and better Torque. Not sure what rod's etc you need to use, but I am sure if you put a post in the tech section titled "Building a 2.7 M20" the guys will fill in the blanks for you.

Kind regards

Andy

Post Sun Feb 06, 2005 5:46 pm

andy what engines in the 328 24v, an m52?

Post Sun Feb 06, 2005 6:19 pm

Hi mate, yep, it is the M52B28, sitting on the garage floor atm. Will get it started as soon as I can. I can't wait!

Post Mon Feb 07, 2005 7:19 pm

my friend has an e36 320i with a modded m52 328i engine, massive power and fantastic noise!

Post Mon Feb 07, 2005 8:18 pm

toby, how has your mate tuned his 328?

BBTB, M50 manifold etc?

been planning on those mods for a while

Post Mon Feb 07, 2005 8:50 pm

nobody actually knows to be honest. the lad who owns it doesn't know much about cars!

all i know is it's a 93 4dr e36 with a 97 328i engine. guess it has the 325 manifold but couldn't say for definate. the exhaust system and manifold are standard. it must be putting out a fair few bhp because it will comfortably pull away from my close ratio m535i, any gear, any speed. and i'd be surprised if it was much lighter if any at all. this car is part of the reason i am building my 335i

desperate measures and all that

Post Tue Feb 08, 2005 9:57 am

Brenner5 wrote:i will be taking my M20 2.5 engine out soon and want to know if i can do any mods to it

i will most likely be doing the BBTB from the zone
i already have a zone chip too

any other mods that can be done??

can't really affored to do the 3.5 conversion as many would suggest

how far do you want to go? head work is not cheap but theres loads
of horses availble in a m20 2.5. most important an engine is a pump
get it breathing properly

i have a standered 3.5 lump avalible in a 7series auto and you can here it running no breakes so cant drive.
will be cheap as i need the room.

Post Tue Feb 08, 2005 3:58 pm

i want to do some engine mods but it will depend how technical it gets as i dont want take on something big and not get it back on the road,

uni schedule isn't the best too

Post Tue Feb 08, 2005 4:14 pm

cam
exhaust
6 branch
remap/custom chip from ant

this lot will stil cost u Ãƒ”šÃ‚£1k which makes the 3.5 seem more sensible
i reckon u can get a 3.5 in for around Ãƒ”šÃ‚£800 if u do most of the work ureself, and ull have 220hp

Karan

Post Tue Feb 08, 2005 10:32 pm

220 bhp sounds cool

i reckon once i've had some more fun with the 2.5, i'll move on to the 3.5 conversion (like many ppl are doing here)

as for the mods on the 2.5, i already have:

full s/s scorpion exhaust
wild chip from ant, not remapped or anything

will be looking for a 6 branch soon though :lol: