Firstly I'd like to ask the mods to indulge me in this thread as I think the best minds on the planet when it comes to my 'M540' project are on this forum.
Six months ago I bought an Indonesian assembled (German manufactured CKD kit) 1995 530i 5 speed manual to take the daily driver duties off my M5 (which doesn't like being stuck in Jakarta traffic jams)
It's been overall a great car for my 40km daily commute, reasonable power, good fuel economy , ok handling and brakes BUT there's lots of room for improvement.
So far I've focused on restoring the 530s power (it went like a 520 when I got it) and we traced that to an incorrectly adjusted throttle cable which was only giving 75% travel on the throttle body and some exhaust mods.
I want a bit more power and I don't want to go EDC but an 'almost' M540 including M5 bumpers etc.
The Indonesian assembled 530i's ALREADY HAVE the M5 style side skirt and M5 rear plastic number plate surround from the factory
I removed the 2 front mufflers, emptied all the glass packing from the centre muffler and installed a used E34 M5 muffler from GA25331 when Taffy put an Eisenmann race muffler on his M5. The exhaust now sounds great and the 530i seems to have more pull at higher speeds. Next step on the exhaust is some collector / expansion chambers and a crossover pipe where the 2 front mufflers used to be.
Some new Toyo T1R 235 and 255 R18s going on at the end of the month.
Finally after patiently waiting I've picked up an M60B40 (nikasil) engine out of an 840 coupe (automatic trans ex Singapore) and I intend to initially just bolt it in and run it with the 530i's 5 speed.
The engine isn't 100% complete but most of the parts from the M60B30 are the same (injectors are there, ICV is missing) so most of the bits from the existing B30 I can use.
A couple of immediate questions
1. The MAF is a different part number, will the B30 MAF work on the B40 or is this a must change item ?
2. The flywheel between the B30 and the B40 are a different part number (PN) and also the B40 flywheel is 1kg heavier, is this a big problem ? All other hardware for the flywheel are the same PN.
3. Will the B30 DME work on the B40 ?
The 530i will get suspension parts from my M5 stock including some front struts , used springs out of my M5 (as I want to put new OEM springs in).
The brakes will also be renewed and or upgraded.
The 530 is a nice car and some tweaking I should be able to get 290 to 300hp out of the 540 with a chip and exhaust mods which would make it a nice DD and as a 'disposable BMW' I won't get upset when a motorcycle puts a scratch on it. I really have a lot of fun driving it each day, usually with my window open to listen to the V8.
Future plans are a 6 speed trans, LSD and a gear ratio change (lower ratio). Taffy has plans to build an E30 M3 replica but a 4 door with an E39 M5 V8 and trans so I could be tempted to go S62B50 later.
We don't know of any genuine E34 540s in Indonesia
Thoughts , comments and suggestions please.