m40 carb and ignition question

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ianclapham
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Wed Jul 28, 2010 9:20 pm

i'am currently building my E30 into a stock car for next year, problem being the formula states carb only, now my E30 is 1800cc on injection.

Can i get a carb and inlet manifold from a m40 1600 and bolt it on???, if so i guess the ecu would be useless, so would i need ignition parts and or ecu from a carb engine?

thanks
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StuBeeDoo
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Wed Jul 28, 2010 9:21 pm

AFAIK, all M40s are injection.
This is why I no longer drive an E30......

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Brianmoooore
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Wed Jul 28, 2010 10:47 pm

All M40's were injected, as stated above. It was it's predecessor, the M10B18 that came as both injected and carb.
If you convert a M40 to carb., you will still need to retain the ECU for spark purposes. No problem in doing it, if you can find a suitable manifold for your chosen carb.
I run a M40 on a carburettor of a kind at the moment - it runs on LPG with a single point mixer in the inlet pipework. Would your regs permit this?
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dil1986
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Wed Jul 28, 2010 10:54 pm

any1 have any idea why my m10 carbed wont go over 3000+ revs ?
sorry about going off subject
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Brianmoooore
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Wed Jul 28, 2010 11:05 pm

Probably ignition component related.
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martauto
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Thu Jul 29, 2010 7:51 pm

dil1986 wrote:any1 have any idea why my m10 carbed wont go over 3000+ revs ?
sorry about going off subject
As Brian says, ^ I wouldnt get home if I had this problem.


Mart.
Only the E46 cab left now.
Just got too old.
ianclapham
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Thu Jul 29, 2010 8:31 pm

was the m10 ever fitted to the e30? the rules state that if i have injection i have to convert it to carb setup if a carb was fitted to this model?
so i have an e30,if it ever came with a carb the most logical solution would be to find a m10 lump with carb and dizzy/ignition control unit.
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Brianmoooore
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Thu Jul 29, 2010 9:09 pm

M10 engine was fitted to all pre facelift four pot E30's, and the very first facelifted models.
The carbed E30 model was the 316, which was actually just under 1800cc.
ianclapham
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Thu Jul 29, 2010 9:16 pm

thanks brian thats good news then, thats my next move to source a m10 lump complete!!
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psychochild187
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Fri Jul 30, 2010 3:17 pm

i have a m10 carb here if you need one
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Brianmoooore
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Fri Jul 30, 2010 10:20 pm

psychochild187 wrote:i have a m10 carb here if you need one
It's a M10 engine he wants! For competition use.
The last thing he'll want to bolt to it is the standard Pierburg carb!
I suspect a pair of side draught Webers is more what he has in mind.
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