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PostPosted: Wed Sep 15, 2021 6:56 am 
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TBI Slant 6
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Joined: Sun Jan 11, 2004 11:19 am
Posts: 243
Location: Oulainen, Finland
Car Model: 1965 Valiant 170/A833/8 3/4SG
Will this work with vr-sensors?


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PostPosted: Wed Sep 15, 2021 12:57 pm 
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TBI Slant 6

Joined: Thu Apr 18, 2019 7:57 am
Posts: 232
Location: Lawrenceville, GA
Car Model: 1966 Dodge Dart
MJF wrote:
Will this work with vr-sensors?


Quite possibly, but they're a lot harder to bench test as they rely on motion to generate a voltage. VR sensors generally work better with pointy toothed trigger wheels, though.

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Matt Cramer
1966 Dodge Dart turbo / EFI project


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PostPosted: Thu Sep 16, 2021 10:25 pm 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 201
Location: Helsinki Finland
Car Model: 1966 2D Dart
With no teeth there will come only very small signal if any. Also the singal output will be more sinus wave shaped than a good trigger signal because slow distance change.
If "any" signal exists with vr-sensor on pump cam the signal amplitude will be speed depending.

A hall sensor is ideal for that because it makes static signal near magnetic material. Sensor location can be adjusted and tested w/o engine running.

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1966 Dodge Dart. Slant six 170 cu in. A904 automatic transmission. 7 1/4" rear end.

E85 fuel (based on recycled waste). Ported head. O/S valves. Balanced internals. TO3/4, Maxxecu, OGC cam. Hughes custom converter. 4.10SG rear.


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PostPosted: Tue Jan 25, 2022 8:58 pm 
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Joined: Sat Feb 08, 2003 2:37 pm
Posts: 4135
Location: CA
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I'm about to do this on my motor. How has yours been running with this cam sensor setup Matt? How critical is the exact position vertically or the thickness of the plate? Not sure how forgiving the gap requirement is.


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PostPosted: Wed Jan 26, 2022 10:45 am 
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TBI Slant 6

Joined: Thu Apr 18, 2019 7:57 am
Posts: 232
Location: Lawrenceville, GA
Car Model: 1966 Dodge Dart
Haven't had the chance to fire the motor up yet, but I will post details when I do. The main "gotcha" is that you don't want the plate so thin the sensor hits the cam. The sensor's ideal gap is 1 to 2 mm.

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Matt Cramer
1966 Dodge Dart turbo / EFI project


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PostPosted: Wed Jan 26, 2022 6:08 pm 
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Joined: Sat Feb 08, 2003 2:37 pm
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Location: CA
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My plate appears to be a bit thicker then yours but pics can be deceiving. Accurate measurement may be a challenge with the motor in car / pan on to know that the lobe is at its closest point.


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