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Model specific boards => Golf mk2 => Topic started by: golf-gti-matt on 02 March 2009, 22:04

Title: Timing light spec's
Post by: golf-gti-matt on 02 March 2009, 22:04

Thought i'd give my golf a tune-up following the guide on here today, i was playing around with the ignition timing (was waaay out), i set it up with my trusty gunson timing light, then thought i'd have a play with a colleagues snap-on timing light as he had never used it before!  :huh: Anyhow, say your standing infront of the car looking down the flywheel hole the timing mark is about 3mm further back towards the car with the snap-on light compared to the gunson light! How odd! which one do i belive  :grin: is it worth worrying about for that small difference?

Title: Re: Timing light spec's
Post by: Ben Lessani on 03 March 2009, 08:26

I know which I'd believe

Title: Re: Timing light spec's
Post by: Mew on 03 March 2009, 10:15

Do either of the lights have an adjustable advance?

Also, when you say stood in front of the car, is that where you were timing it from or was that just to explain what happens?

Title: Re: Timing light spec's
Post by: golf-gti-matt on 03 March 2009, 17:46

The snap on light has a digital gauge, when set to 0 it flashes erraticly around the 6 degrees before tdc mark, when you set the gun to 6 degrees advance it flashes at the tdc timing mark this confused the 'life' out of me so i hooked up the gunson which is just a standard flashing one, no gauges or anything and the 6 degrees before tdc mark lines up perfectly with the arrow on the gearbox.  Seems to run ok aswell

Title: Re: Timing light spec's
Post by: JC8V_Gti on 03 March 2009, 21:47

yeah, when you're using the snapon 1 you have to use the TDC mark i believe because it has built in advance.

Title: Re: Timing light spec's
Post by: golf-gti-matt on 03 March 2009, 22:13

In which case both guns are spot on. good times!

Title: Re: Timing light spec's
Post by: rubjonny on 04 March 2009, 08:56

with the snapon one you can use either mark. if set to 0 and use the BTDC mark, if set to 6deg advance use the TDC mark. simples.

Title: Re: Timing light spec's
Post by: Ben Lessani on 04 March 2009, 09:10

You a meerkat now rj?

(http://www.comparethemeerkat.com/meerkats/images/00303.jpg)

Title: Re: Timing light spec's
Post by: rubjonny on 04 March 2009, 15:50

Indeed, i actually checked to see if that website existed this morning :grin:

Title: Re: Timing light spec's
Post by: golf-gti-matt on 04 March 2009, 17:46

Quote from: rubjonny on 04 March 2009, 08:56

with the snapon one you can use either mark. if set to 0 and use the BTDC mark, if set to 6deg advance use the TDC mark. simples.

Yeh all makes sense now, im old skool cant be dealing with all this modern digital stuff! haha