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Hustler's build thread 2.0, the natural aspiration connection

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Hustler's build thread 2.0, the natural aspiration connection

Old 09-18-2012, 12:35 PM
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Originally Posted by hustler View Post
What are the chances my FM cam gear has the stuff to run an NB CMP? I just ordered MS2 and I have no idea how to get a CMP sensor.
The Toda gears that FM have now are available in both forms (with and without nubs), just compare the pics with what you have
Flyin' Miata : Engine/Drivetrain : Internals : Toda adjustable cam gear
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Old 09-18-2012, 12:53 PM
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Can you really not buy a replacement VC? I know you have things welded onto yours, but that can be redone. Do you really want your timing belt exposed that much.

I am going to mail you one of these stickers.
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Old 09-18-2012, 01:12 PM
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why can't you run a modified CAS and configure megasquirt for custom trigger wheel?
also, you can at least wear your neck restraint ...
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Old 09-18-2012, 01:22 PM
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Originally Posted by NiklasFalk View Post
The Toda gears that FM have now are available in both forms (with and without nubs), just compare the pics with what you have
Flyin' Miata : Engine/Drivetrain : Internals : Toda adjustable cam gear
That's another $200 plus another valve cover that I'll also have to get an AN-fitting welded on. So we're basically looking at $400 to get a CMP signal.
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Old 09-18-2012, 01:26 PM
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You could just get a normal trigger wheel in the right diameter for like 60 bucks and make your own hall effect sensor bracket.
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Old 09-18-2012, 01:38 PM
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1) run your choice of trigger wheel - 4T, 12-1T, 36-1T
2) cut one tab off the CAS - so it sends ONE pulse per camshaft revolution (normally it sends two pulses - long one and short one, 180* apart)
3) run 1 wire from CAS for cam signal, run 1 wire from crank sensor for crank signal
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Old 09-18-2012, 01:40 PM
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still too hard for hussy.
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Old 09-18-2012, 01:41 PM
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Originally Posted by soviet View Post
1) run your choice of trigger wheel - 4T, 12-1T, 36-1T
2) cut one tab off the CAS - so it sends ONE pulse per camshaft revolution (normally it sends two pulses - long one and short one, 180* apart)
3) run 1 wire from CAS for cam signal, run 1 wire from crank sensor for crank signal
Where does that single-tooth fall in relation to the CKP #1 tooth?
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Old 09-18-2012, 10:41 PM
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Originally Posted by Braineack View Post
still too hard for hussy.
I just want to be sure it starts the first day.
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Old 09-18-2012, 10:42 PM
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wheres the fun in that?
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Old 09-18-2012, 10:46 PM
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the run of the mill BP05 distributor only has one tooth on the cam side, and is drop in.
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Old 09-18-2012, 10:52 PM
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Does anyone have an EV14 injector timing table?
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Old 09-18-2012, 10:52 PM
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Originally Posted by MD323 View Post
the run of the mill BP05 distributor only has one tooth on the cam side, and is drop in.
That tooth must fall be tween the last and first CKP tooth, that's the challenge. Any idea if those two jive?
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Old 09-18-2012, 10:58 PM
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your using the 12T crank wheel correct? ill check on the tooth angle tomorrow when im infront of the car.
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Old 09-18-2012, 11:06 PM
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Originally Posted by MD323 View Post
your using the 12T crank wheel correct? ill check on the tooth angle tomorrow when im infront of the car.
I'm running it exactly like this:
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Old 09-19-2012, 05:00 AM
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Old 09-19-2012, 05:36 AM
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If that's to scale you need a bigger sensor.
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Old 09-19-2012, 09:06 AM
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Originally Posted by hustler View Post
That tooth must fall be tween the last and first CKP tooth, that's the challenge. Any idea if those two jive?
Between the first and last tooth, so 360 deg, or one complete revolution of the crank.

If the CMP tooth were to cross that it's have to be over 180deg in duration, (2 crank revs per 1 cam rev). Even the long pulse isn't that long, so you don't need to worry.
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Old 09-19-2012, 02:02 PM
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Originally Posted by richyvrlimited View Post
Between the first and last tooth, so 360 deg, or one complete revolution of the crank.

If the CMP tooth were to cross that it's have to be over 180deg in duration, (2 crank revs per 1 cam rev). Even the long pulse isn't that long, so you don't need to worry.
I know this is going to be a shock to everyone on the forum, but I'm confused. Rather than interpret what you wrote, I'll just clarify my question.

I was under the impression the CMP tooth needed to fall between tooth #2 and tooth #3 on my special "Hellow Kitty" CKP set-up. Can it fall somewhere else and still work properly?
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Old 09-19-2012, 02:20 PM
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I know it can on haltech. You have to tell it how many degrees the trigger tooth on the crank is from tdc and how many degrees the trigger tooth on the cam is from the combustion stroke tdc. And whatever that amount of degrees is is the max timing advance you can run.
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