Converting a Honda Dizzy

[whittlebeast]

I was having trouble getting rock solid timing using the stock Honda 24 tooth crank sensor even after I tried a Hall sensor for the cam sync. I was also fighting starting issues and sync issues. I wanted to go to more teeth so the ECU will see a tooth every 18 crankshaft degrees compared to 30 degrees with the 24 tooth wheel. I purchased the following parts.

A 40 tooth 2.5" OD steel gear from an online supply house
A 3/8" OD threaded Motec Hall sensor designed for motorcycles
A Accel points eliminator optical pickup that required a pullup resistor

http://www.nbs-stl.com/CrxTypeR/Dizzy%201.jpg
http://www.nbs-stl.com/CrxTypeR/Dizzy%202.jpg
http://www.nbs-stl.com/CrxTypeR/Dizzy%203.jpg
http://www.nbs-stl.com/CrxTypeR/Dizzy%204.jpg
http://www.nbs-stl.com/CrxTypeR/Dizzy%205.jpg
http://www.nbs-stl.com/CrxTypeR/Dizzy1.jpg

Here is the composite log with me reving the motor.

http://www.nbs-stl.com/CrxTypeR/40%20to ... %20log.csv

The timing appears to be rock solid with no drift and easy starting. I had to purchase 6 of the gears and only used one. Contact me if anyone can use a 2.5" OD, 12 mm ID gear.

Hope this helps people that may be fighting similar issues.

Andy

[ol boy]

Thats a nice set up. If I ever to a I4 with MS2 i'll give that a try.

[jasaircraft]

Can you repost the pics please?

[whittlebeast]

I think I still have one of the gears I used.