'72 914-4 Webers 40s, stock motor

I got my meter off ebay for $24, hooked it up right away and BAM. My dwell was set to 46 degrees after gaping it with a feeler gauge. So I nudged it a bit and BAM... 49 degrees. pretty damn good. RPM works like a charm as well. I'm thinking about setting up a temporary mount inside the car hardwired for voltage, rpm and dwell.

I'm taking this piece of crap Craftsman Engine Analyzer back to Sears, what a waste of 50 bucks for an analog meter.

Then I busted out the timing light with advance, held at 3k rpm and adjusted the distributor to line up with TDC. I briefly caught another mark, but the mark that i lined up with is immediately to the right of the large fin on the fan. Is this correct?

I'll take it for a spin tommorow and see how it runs. Sounds much better than before though. After that i will adjust the valves, one of the cylinders keeps backfiring through the intake. Hopefully its a valve clearance issue. If i'm still having problems then i'm going to order a set of those carb flow meters and learn to tune carbs.

This is all on my crappy engine. I want to get some experience on these Type IVs before i drop in my higher power motor.

Is my sequence of tuning correct? 1) Dwell 2) Timing Advance 3) Valves 4) Carbs

valves first

ummm.. WORD!

Yarin, Is this the same beast?
ebay Sunpro

If so I'm bidding on one. Rgds, Michael

Sorry.. this is the item i got:

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...item=4550252741

I'm sure the other one will work just fine though. Mine is new in box, works like a charm. RPM is nice to have, but its a really slow refresh rate. I expected that though.

good luck!

Hi
A backfire thru the carb is usually a "lean" condition.
try to hear what side is farting, start there, or your carbs might not be jetted right. Small backfires, I had also, got it 99% right by playing with jets.
Good luck with it
Later
Joe