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Re: Add crank and cam pos sensors to BB (for Megasquirt)?
[Re: Swedcharger67]
#1306963
09/21/12 12:18 PM
09/21/12 12:18 PM
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Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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Guy in my industrial complex does allot of EFI conversions, for a crank signal he's adopted the Ford strategy of a toothed wheel with a tooth every ten degrees but with one tooth missing to ID TDC of #1 & 6 cylinders... It's referred to by Ford a 36 minus 1... He sandwiches a 36 tooth bicycle sprocket with one tooth removed between the harmonic balancer & the crank pulley.... He still needs a Cam sensor but as mentioned all it does is tell the computer whether cyl 1-8-4-3 or cyl 6-5-7-2 is on compression stroke..
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
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Re: Add crank and cam pos sensors to BB (for Megasquirt)?
[Re: Swedcharger67]
#1306964
09/21/12 12:51 PM
09/21/12 12:51 PM
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Joined: Jul 2007
Posts: 531
Virginia
JimG
OP
mopar
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OP
mopar
Joined: Jul 2007
Posts: 531
Virginia
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Quote:
Jim, stick to your original idea with a crank sensor and tooth wheel, you don't want the bad precision from a distributor signal.
The cam sensor on the other hand can be something simple like was suggested above.
I have the same idea as you, if you know where I can get the good coils at a reasonable price, pm me...
Martin 
Martin, at this early juncture, I only know what I've read. Having said that, I have read that some guys have had trouble with noise when using OEM Mopar distributor pickups integrated to Megasquirt.
Thanks,
J
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Re: Add crank and cam pos sensors to BB (for Megasquirt)?
[Re: JimG]
#1306965
09/21/12 02:16 PM
09/21/12 02:16 PM
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Joined: Dec 2010
Posts: 208
Norrland, Sweden
Swedcharger67
enthusiast
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enthusiast
Joined: Dec 2010
Posts: 208
Norrland, Sweden
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Quote:
Martin, at this early juncture, I only know what I've read. Having said that, I have read that some guys have had trouble with noise when using OEM Mopar distributor pickups integrated to Megasquirt.
Thanks, J
Noise is always a potential problem, no matter what system you are using. It usually pays off to plan the electrical system carefully, think shielded cables for sensors, one common grounding point for all signals and ECU. Never use engine and/or chassi as return path for the ground.
Noise is somewhat complicated, and can create lots of problems, I think careful/early planning will make it less painful...
Martin, 67 Charger, 512 cui, E85, MegaSquirt MS3X sequential ignition & injection
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Re: Add crank and cam pos sensors to BB (for Megasquirt)?
[Re: Swedcharger67]
#1306966
09/21/12 05:29 PM
09/21/12 05:29 PM
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Joined: Nov 2006
Posts: 2,260
IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,260
IL
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I use a lean burn 400 dizzy in my 383 with my classic FAST efi doing fuel and spark, sending the trigger to an MSD 6a box. I have the sequential box, but didn't want to go through the extra work/cost of the cam sync to use the seq mode. It's been running for 3.5yrs now and I don't see any drivability issues where I'd take the time to go seq. I run 37lb injectors and 5lbs of boost right now. A heavy hitter running big injectors may see a benefit.
One other option a guy showed me was taking the 2nd pickup in the lean burn dizzy and grinding off part of the pickup and then grinding off parts of the paddles to allow it to 'see' whatever events you were looking for.
Last edited by furious70; 09/21/12 05:33 PM.
70 Sport Fury
68 Charger
69 Coronet
72 RR
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