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Mustang Technical Discussion > Mustang Projects > Husky's 65 Restomod > Community Forums > Mustang Forum Australia - Mustang Tech

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hybrid
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If you use a pullup on it, it will be pulling the voltage high normally. When when you hit a tooth, it will pull it low, so you'd actually use falling edge.


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Husky65
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I've been looking at the Haltech software, and it has a pullup in the ecu. So I don't need an external one. You can switch it from a low voltage to high voltage pullup depeding on the signal quality.

OK, so my thinking of rising and falling edge must be off a bit. I thought that rising/falling edge meant you lined up the sensor with either for rising or falling edge of the tooth, then select it accordingly in the ecu. Can you explain for my simple brain a bit more please


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hybrid
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The rising/falling is related to voltage, not a tooth. So picture the square wave (like you'd see on an oscilloscope) your hall sensor will generate. With the pull up resistor, the "normal" condition will be "high" (5v or 12v depending on your configuration setting). When the sensor sees a tooth, it will ground the signal to 0v.
So the voltage will FALL when the tooth is seen. This is the falling edge of your signal. Once the tooth has gone, voltage will rise again to whatever you have configured.


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Husky65
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So I would set my software up to falling edge as the sensor I'm using goes to zero when the tooth is present. Do I line the sensor up with the start of the tooth or the centre of the tooth?


Last edited by Husky65 on Sat Jan 06, 2018 1:43 pm; edited 1 time in total

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hybrid
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Don't worry too much about that because you can adjust it all using the trigger angle setting in the ECU.
You can get it in the ball park by counting the teeth (each tooth is 10 degrees on a 36 base wheel).

Check the Megasquirt manual page 126.
www.msextra.com/doc/pd...re-3.4.pdf

Once you're in the ball park, you set a fixed timing of say 10 degrees. Crank and check with a timing light.
You then adjust your trigger angle so that the balancer/timing light reads 10 degrees.


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Husky65
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Yeah that's what the Haltech guide says to do. Fix the timing to 10, then getting everything matching.
Well I have it set to 60 degrees now and the centre of the tooth. See how we go later


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Husky65
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Thought I'd install a 50mm alloy version of the 35mm copper radiator I had after seeing it in on the xr6 turbo build. Now I have to trim my shroud though.....just making work for myself


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Husky65
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I also thought I was smart when I did my research and ending up buying this instead of the overpriced Vortech/Procharger bypass valves.

However after seeing George's car, it seems that great minds think alike.( or we are both as simple as each other Wall Bash )




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boofhead
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Cool. I am a fan of cross flow radiators. Your trimming lightens the car - just don't mention the weight of the extra water coolant or surface area.


I will someday think of something clever to say.

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gbx78
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Husky65 wrote
Thought I'd install a 50mm alloy version of the 35mm copper radiator I had after seeing it in on the xr6 turbo build. Now I have to trim my shroud though.....just making work for myself


geezus .. why didnt you get the big one?? lol


'You can never test fire too many times.' - Hybrid

'You can never have too many gauges' -
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Husky65
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Well it's caused a lot of headaches. Needed to make new mounts, trim the fans, hoses won't work any more, it pushed the condensor too far forward, and I now have only about 2-3mm of clearance from the fans to the supercharger pulley.

But I'm sticking with it.


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Husky65
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Husky65 wrote
Well it's caused a lot of headaches. Needed to make new mounts, trim the fans, hoses won't work any more, it pushed the condensor too far forward, and I now have only about 2-3mm of clearance from the fans to the supercharger pulley.

But I'm sticking with it.
Went to Shanes Chassis in Kirrawee who did the welding i needed done. Hes a top bloke and very skilled. Then i mounted the coils on the covers, and mounted the covers. Used studs, omg so good!





Last edited by Husky65 on Mon Jan 08, 2018 4:50 pm; edited 1 time in total

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Husky65
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Then spent the arvo doing one of my most hated jobs, making new spark leads. I used some high temperature red msd spark boots at the plugs, and msd ls boots at the coils. My hands are covered in blood and wd40 ha ha . But it turned out good




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Husky65
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By the way you should be able to tell I finally upgraded my phone. Damn the photo quality is getting good in these latest phones Thumbs Up


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gbx78
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Fancy. . Looks great. And neat!! I like that.

If im going down that path ill have to get plain valve covers if they are having coil packs ontop.. if thats better than a single output to my MSD. *facepalm.. more wiring. Does look neat as!


'You can never test fire too many times.' - Hybrid

'You can never have too many gauges' -
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