I am going to buy a timing light and don't wan't a cheap one. Snap On has some nice ones.

Ebay may be the way I buy it. Some of the guns are just very basic and some are digital advance/tach/timing lights. I will in the future wan't to change my timing to gain more horsepwer.

I don't have much knowledge of the lights, but, I'm assuming they are all inductive. Does this mean how it connects to the plug wires.

I like the one with the dial on the rear.

Will all of these lights work on a rotary?

Thanks for any advice...Scott

 

if you use the dial-advance timing lights, you must multiply the desired timing by two then set the dial to that, 24 degrees leading = 48 on the gun.

carl.

 

Yeah inductive means it clips around the wire -equals- easier to use

The direct hook-up ones or whatever theyre called, you have to take the wire off and stick the supplied piece of metal in betwen the wire and the plug/dizzy cap. I wouldnt recommend this kind. theyre a pain. I shocked myself using one. lol

 

it says it can be used for initial timing. that would be just setting the dial to zero, correct?

 

The Sears Best Craftman is like 75.00 +/- and it has your dial, is inductive, heavy/solid and chrome plated. It would be the last one you would ever need ( unless somebody swipes it ).

 

I got the 19.99 one from JCW and it works great.

 

Mine's just a simple Sunpro and it's given me years and years of flawless service. And it was made here in the good ole U.S. of A.

 

Wait.. back to the topic of dial timing lights... Leading timing is supposed to be TDC.. and Trailing at 20 ATDC.. what should I be looking at if I were to use a dial type timing light?

Thanks.

 

Why do you have to set the dial to double the advance?

 

One light is as good as the other, as long as the bulb isn't burned out.

 

I would only ever buy the cheap kind. Speaking of which, maybe I should get one of those cheap Wal-Mart specials? My old cheapie died last year, and my friend's cheapie has a slow flash circuit (not fun to use as it can't read both flashes of a direct fire ignition system very well).

 

I'm using a matco digital advance unit that has a switch to allow it to do 2 cycle engines......perfect for doing rotary timing with digital advance........but not cheap.