Using fuel pump cam lobe for a trigger

[OttoB]

Took some pictures, the aux shaft is in the engine, i might have picture of that somewhere.

https://photos.app.goo.gl/i9aFeXsxUZUCVXCU6

 

[MikeSr.]

Took some pictures, the aux shaft is in the engine, i might have picture of that somewhere.

https://photos.app.goo.gl/i9aFeXsxUZUCVXCU6

I actually saw your pics before- MikeJr made a fuel rail based on your design.
I just didn?t notice the fuel pump hall sensor.

 

[OttoB]

I actually saw your pics before- MikeJr made a fuel rail based on your design.
I just didn?t notice the fuel pump hall sensor.

I just added those pictures of Hall sensor, yesterday it was.

 

[MikeSr.]

MikeJr was doing a B30 project( sold) and he had the pics

 

[OttoB]

Too fast was l.

But yeah, this is nice solution for a cam trigger on B230. Air gap is little pain to get right, so adjustable (w threads) sensor is more forgiving with design.

I made first prototype of cam with angle grinder. Second one was made first by milling and then turning the cam to get off-centric off. With that one air gap was too big and small adjustment of braket was needed.

 

[Flo]

A Norvegian company, Scimec motor, sell a mount for honeywell gt101 sensor for fuel pump location.
https://m.facebook.com/Scimecmotor/

 

[PCH]

https://www.cbperformance.com/product-p/7073.htm

This is for VW air-cooled engines, but suits also B20 and B30

Similar to Compu-Fire DIS trigger for VW or most any 4 cyl Bosch distributor. I had that system adapted to B21

 

[Flo]

Speeding parts sell an adapter to use volvo 850 sensor in distributor location for cam sync.

https://www.speedingparts.eu/p/mode...b230/cam-position-adapter-kit-volvo-b230.html

 

[MikeSr.]

Well, they were on sale, so I got one of the CB Performance cam sensors for VW. I can confirm they fit with the B20 distributor drive.
A single hall sensor for cam. Plan to use a DIY 36:1 crank trigger wheel with a hall sensor for sequential ignition with LS coils and Microsquirt.

 

[cwdodson88]

what 36-1 trigger wheel/spacer/pulley are you using? And what sensor? My engine is on a stand, so if you wanted to, I could engineer a sooper bichin billet bracket for your sensor setup.

 

[MikeSr.]

I have a dual pulley setup- about 5&1/2” diameter. Thinking about DIY hall sensor and their 6&3/4 wheels.

Crankshaft / Camshaft Position Sensor - Hall Effect Threaded Body

Crankshaft position sensor - Hall Effect with threaded body for easy adjustment - tested to over 19,000 RPM using our trigger wheels.

www.diyautotune.com

6 3/4" 36-1 Trigger Wheel

6 3/4" 36-1 Slotted Trigger Wheel - perfect for Megasquirt or EDIS installations

www.diyautotune.com

 

[MikeSr.]

Maybe a pulley with a rim for a EDIS wheel would work- I had one for a B21, but sold it.

 

[MikeSr.]

B18 & B20 EDIS 2 row pulley

B20/B18 two row with EDIS mount pully enables all B20 engines to run a lightweight pulley and adds the possibility to run a EDIS wheel (not included) Made out of lightweight high grade 6061 aluminum, and finished off with hard black anodizing.

www.classicswede.org.uk

Like this, maybe? Sold out and pricey

 

[WillettRun?]

yeap, no problem there, just make sure its 90* before TDC

 

[MikeSr.]

Per the manual, 9 teeth before the gap at tdc, so 9/36=90/360 and the cam sensor aligned

 

[cwdodson88]

Per the manual, 9 teeth before the gap at tdc, so 9/36=90/360 and the cam sensor aligned

I’ve got a 36-1 toothed wheel. Let me see what I can get going for a pulley. I’ve got one of dales edis single groove pulleys and I think it’s something I can work something out for you

 

[MikeSr.]

Thanks- I can snag an edis toothed ring if necessary

 

[cwdodson88]

Mines not going on anything, just hanging out on a peg on the wall. Let me see what I can work up.