hpv-1 dial settings?

[carrerarsr65]

any suggestions on dial settings , for my twin plug 3.0sc motor weber 40 idas, headers, any suggestions would be helpfull

[KTL]

Suggestion is DO NOT trust the dials. They can be way off. Go by the dials for baseline settings to fire up the engine and then use your voltmeter and/or timing light to set them properly.

Also make sure to check that your sensor is lined up with the trailing side of the 11th tooth on the crankfire wheel when at TDC. If your sensor-to-tooth alignment is off, you have to adjust your readings of the timing by how far/how many teeth you are off. Reason I say that is because your sensor bracket's positioning of the sensor may in fact locate it such that you're not at trailing tooth 11. There have been many a handful of different sensor brackets made and not all are the same! So however many teeth (or increment of teeth) you're off, you need to add or subtract that amount to what you measure with the voltmeter or timing light. One tooth = 6 degrees of timing.

Read and understand the instruction manual and you'll be fine

http://www.electromotive-inc.com/wp-content/uploads/2013/08/hpv1.pdf

For initial settings to get you started, I would suggest what the guys shared in this thread

Anyone running an Electromotive HPV-1?

[KTL]

edited for better reading/clarification

[Steve@Rennsport]

EXCELLENT advice from Kevin.

I've seen several grenaded engines from too much timing so this is not a trivial issue.

Using a DVOM to measure and set timing (.1VDC=1 degree) is very accurate, then using differential voltage to sync them in twin-ignition applications.

[simsalabim]

Good to see this thread.

I just set up my HPV-1 on a 3.0 single plug sc. Not trusting the dials completely, I set them very conservatively for first start up. I then used a DVOM to check and record the voltage at various rpms throughout the range. Once I was convinced that the linearity of the changes did in fact correspond to what the EMotive manual stated, I reset the individual dials and rechecked as above. After a couple of sequences like this I arrived at a timing curve that most closely matched what the Porsche shop manual called out. It was important to find out what the actual timing should be with vacuum advance added in, and set the curve accordingly.

I hear that these units are rock solid, but I plan on checking for any drift etc. from time to time ...

Bill