[DMAC]

A friend gave me a dwell meter/tacho.
How do I use this?
What will it tell me?
Is it useful for tuning?

[want33s]

Handy for setting points.

[Scrawny]

Yep, dwell for setting points gap. Royce should be able to give you the run down, been a while since I've played with points

[DMAC]

Don't have those so not really helpful then.
Tacho bit is handy to have around the front setting the timing though.

[royce]

2 alligator clips, one coil pos, one coil neg, if that doesnt work swap em, if that doesnt work try coil neg and earth or something, I cant remember

dwell is the angle of engine rotation the points are closed / module is switched on, you cant adjust it on a sierra but have a look anyway

[Scrawny]

Quick search found this

[steak_knife]

Scrawn wrote:

Yep, dwell for setting points gap. Royce should be able to give you the run down, been a while since I've played with points :lol:

I kinda miss those day's.....

Hq tune was a valve re-lap...

[BAZZOOK]

I've got a couple of dwell meters and timing lights in the shed. faarking useless now. It was good to be able to adjust things. you could adjust the points very accurately with out using feeler gauges

[Rockhopper]

from memory most 4 cylinder vehicles with points ignition ran best at around 50 degrees. Most 6 cylinder cars with points was around 32 degrees. Can't remember v8's. one wire to coil neg and the other wire to earth. I hav'nt used one in years. Not even gas powered forklifts have had points in them for the last 20 years or so