Weber 45 for m20b25

Post Wed Jun 24, 2015 2:13 pm

hi all, if i use 2 weber 45 for my 1985 m20b25 6 cyc, is that ok? if yes, anyone knw any web site sale the intake for the covertion?

Post Fri Jun 26, 2015 7:18 pm

would 3 not be better?

Post Wed Sep 09, 2015 10:06 pm

[quote="8565"]hi all, if i use 2 weber 45 for my 1985 m20b25 6 cyc, is that ok? if yes, anyone knw any web site sale the intake for the covertion?[/quote]

Triple webers is a must! Imagine the sound!!!!!

Post Wed Sep 09, 2015 11:11 pm

E30coupwes wrote: Imagine the sound!!!!!

Imagine the fuel consumption!
Sadly, unless there's a good reason for using carbs., such as the need to comply with competition regulations or similar, these devices are best confined to a museum, along with things like Kettering ignition systems.
A well set up single carb. only gives correct fuelling at a couple of places in the rev. band under any particular load conditions at best, so the chances of getting three carbs. to give correct fuelling at any revs., under any load conditions for any length of time is minimal.
Throttle bodies with injectors controlled by electronics is the way to go.

Post Wed Sep 09, 2015 11:43 pm

Brianmoooore wrote:the chances of getting three carbs. to give correct fuelling at any revs., under any load conditions for any length of time is minimal.

Try 6!

Post Thu Sep 10, 2015 12:04 am

v12 with 2 plugs per cylinder?? and dual dizzy?

Post Thu Sep 10, 2015 9:26 am

1. 45s are too big.
2. There is not enough room in a stock e30 to get proper inlet length and a cold air feed
3. As Brian says, fuelling is generally only correct at one point transient and WOT.
4. Ignition becomes a pig
5. No closed loop control
6. No closed throttle fuel shut off

I can go on but it really is just a step backwards.