conversion is complete!!!

[nick_alpina]

so i've finally finished the convertions on the car! m20b23 to m20b25.
goes alot smoother and running far bit harder! really happy with the change!

some additions i did to the engine are: lightened the flywheel, heavy duty clutch, cleaned the injectors, changed oil sump rocker cover and put the extractors from the old engine to the new, painted block, intake manafold and other parts.

interesting first time project. if anyone is interested in doing the conversion some headaches i came across were:
1) the fuse box needed to be changed (just the c101 connector) had to be sent away for auto electrician to do.
2) trying to get the fan off can take time.
3) trying to slide the engine into the gear box from your garage....... took about 1 day. HUGE PAIN..... no room for error.
4) the m20b23 radiator doesn't work with the b25...... you need to b25 hoses and radiator..... not really what i expected.

the misses helped with a far bit as well..... good apprentice... she helped paint engine and assested in dropping the engine in. shown in the pic

whilst the engine was getting worked on i change brakes and discs.

really impressed with myself considering im not a mechanic and did it all from my garage...... no dodgy wog jobs done either!!

anyone with any questions on doing the same project feel free to ask!!

[DCR62]

Good work.

[solesbee325i]

any tips on improving my 87 4dr 325i performance wise?

[Sharkbite2000]

Nice ride !!! brings me back to the day's.

[nick_alpina]

Originally Posted by solesbee325i

any tips on improving my 87 4dr 325i performance wise?

depends on how much ur willing to spend. give ur injectors a good clean and you'll noice a little. extractors i've found help. lightening ur flywheel feels better.
im looking into chipping the car atm

[MrBlonde]

Well done!

[nick_alpina]

guys im thinking of putting a larger throttle body on from my old engine which is an alpina one and i was going to chip it. will it improve performance? i've heard better just stay stock.

[EgMpower]

its better if you bore it out and polish it, along with polishing your intake manifold, then you'll notice a big difference, and if you chip it then you'll notice that your wasting a lot more gas too! haha, but it all pays off. but remember that any changes that you make on the air flow will be limited by your Vane airflow meter.
let me know if you want more info on that.

[karbonyte]

Reps given for hot misses.

Nice work on the car too.

[solesbee325i]

best way to clean injectors, and how would i lighten the flywheel?

[Mr_SaZ]

I wish i knew .. i have my old Alpina spec 2.7 just sitting at my mates place... but that engine was a weapon.....i have the larger Alpina big bore TB and Larger AFM and i did change the injectors to the Pink Bosch ones off the 328i and US M3... the thing was chipped and flew...
to be honest just change ur diff to a 4.11 LSD and ull get the same 2.7 torque feel
SAZ
PS ive seen ur car many times around and about... but im driving a 4x4 till mines done..

[pj69pl]

Originally Posted by solesbee325i

best way to clean injectors, and how would i lighten the flywheel?

go to a trusted metal shop and get it on a mill. then get it balanced.

[nick_alpina]

Originally Posted by Mr_SaZ

I wish i knew .. i have my old Alpina spec 2.7 just sitting at my mates place... but that engine was a weapon.....i have the larger Alpina big bore TB and Larger AFM and i did change the injectors to the Pink Bosch ones off the 328i and US M3... the thing was chipped and flew...
to be honest just change ur diff to a 4.11 LSD and ull get the same 2.7 torque feel
SAZ
PS ive seen ur car many times around and about... but im driving a 4x4 till mines done..

did ur computer handle the larger AFM and injectors??
yea im searching around for a 4.1 lsd diff. seen some on Ebay. how does it go on highway driving??? revs high???
hahaha.... where bouts have u seen me hooning around??