M54b22/25/30 bike carb conversion

[E46kiiid]

Hi all new to this, been searching and can't find anything on this subject, just wondering if anyone has ever put bike carbs on an m54 block or if anyone thinks it would work or not I am a qualified welder so fab is not an issue wouldn't be the best with carbs but I have served my time as a mechanic so I do understand engines would prefer to fabricate and fit it myself but ideally drop to a carb specialist for a good tune on the carbs, any thoughts would greatly be appreciated, thanks

[328 Power 04]

That would be moving heavily backwards.
If the intent is to not use electronics, then you'd have to find a totally different way to run the ignition system, and deal with the variable valve timing system.

[E46kiiid]

Was more thinking along the line of more fuel more air and sort of along the lines of throttle bodies as in a carb for each pot and also alot higher revs if it was capable of taking higher revs I've seen bike carbs on so e engines and they are proper high end screamers and ye I know not evey engine is the same just an idea is all ha but ye vanis timing would definitely be a pain I suppose, thanks for your feedback ��

[jvsantosmd]

For one, bikes may run 1200cc/4 cyl, (300 cc/cyl), any BMW will do 3.0- 3.2 L/ 6 cyl (500 - 533 cc/cyl). Much more mass, much less revs. You will also need much larger carbs. That's why Porsche went from 40 mm to 46 mm diam Webers on their na engines when they ran 2.0-2.4L (circa 1970's, I had a 914-6 with Webers). Then, they were troublesome to keep in tune, you had to tune 6 individual carbs to run in synchrony. And, no electronic feedback to the ignition, let alone the VANOS. That's why carbs went out. Like the dinosaurs. Look around you, even the cheapest car you can buy today will be fuel injected, e- ignition and drive-by-wire. If you're going to spend your time and skills, do it wisely.

[TheTrashMan]

If you wanted to run carbs on a m54 I'd use webers. But I have to ask, why? The fuel injection system works well on these cars and the siemens ecu tunes relatively easy. But I have to admit, a carb'd m54 would be pretty cool.

[ross1]

Balance and tune 6 carbs? Not for me and I grew up with them.
Perhaps Lucas injection with stacks.