E30 M20 Six inline

For discussing injector selection,manifold modifications, throttle bodies, fuel supply system design and construction, and FIdle valves and IACs.
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dodolover
MegaSquirt Newbie
Posts: 2
Joined: Sat Apr 21, 2012 8:16 am

E30 M20 Six inline

Post by dodolover »

i have M20B25 Six cyl. Inline i wanna get mega squirt but first there are some unclear thing i wanna know about

in my case would i wire 3 injectors on one bank and the other three on the other bank wouldnt this make it squirt while the valve is closed and more if i advanced the timing wouldnt a spark happen whil a valve isnt closed and its squirting in another cyl. ? i know about wasted spark but can it run indvidual normal spark configuration ?

http://www.mkosonen.com/mattsmswiring.gif

right now iam more intersted in running it for the fuel only so want to make shure i understand every thing clearly first before buing it so alittle help from exprienced guys please help me :roll: :roll: and thnx alot for ur time reading all this
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Bernard Fife
Master Squirter
Posts: 475
Joined: Thu Oct 29, 2009 12:54 pm

Re: E30 M20 Six inline

Post by Bernard Fife »

ddl,

The fuel doesn't need to go into an open valve. The fuel will just sit there (getting better vaporization) until the valve does open. In fact, with conventional injectors that are appropriately sized, it is not possible to inject entirely into an open valve, even if you wanted to do it. See #10 here: http://www.megamanual.com/common.htm

Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
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dodolover
MegaSquirt Newbie
Posts: 2
Joined: Sat Apr 21, 2012 8:16 am

Re: E30 M20 Six inline

Post by dodolover »

can i use this pulse generator of my engine to make an ignition timing signal to ms ?

Image
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Bernard Fife
Master Squirter
Posts: 475
Joined: Thu Oct 29, 2009 12:54 pm

Re: E30 M20 Six inline

Post by Bernard Fife »

ddl,

Probably, but you haven't given us enough information to judge, really. It looks like it might be a variable reluctance sensor, but there's a chance it might be a Hall effect sensor. Ether should work. See this for more details on sensors:

http://www.megamanual.com/ms2/pickups.htm#vr

http://www.megamanual.com/ms2/pickups.htm#hall

The other part of the equation is what sort of wheel the sensor is 'pointed at'. If it is a missing tooth wheel, it will need to have a number of consecutive missing teeth. See: http://www.megamanual.com/ms2/wheel.htm

Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
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Matt Cramer
Super Squirter
Posts: 2951
Joined: Sat Jul 03, 2004 11:35 am

Re: E30 M20 Six inline

Post by Matt Cramer »

Most M20s would have a 60-2 crank wheel, which is pretty easy to use with MS. We've found that putting a 10K resistor in line between the positive terminal and the MS2's input pin can help with noise issues on these cars.
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