Dynamic diesel timing (renamed thread)

[Stretch]

What on earth am I meant to do with this??????

[sloride]

Fleabay it for the gassers.

[toomany MBZ]

lol, ^ yeah.

[giff]

Is that some sort of Star Wars thingy?

[ichris93]

Originally Posted by giff

Is that some sort of Star Wars thingy?

I think it's a blow dryer.

[layback40]

Originally Posted by Stretch

What on earth am I meant to do with this??????

Time to come clean Stretch ! You own a gasser now ~ moved to the dark side !!! You know that little car with spark plugs !

[Mölyapina]

Use both hands.

[Skid Row Joe]

Originally Posted by Stretch

What on earth am I meant to do with this??????

You need the gasser owners.........NOT the diesel owners. Never seen one......

[loneranger]

it is a timing light for a gas engine. the red and black leads go on the battery, the clip goes on the #1 spark plug wire. When you press the button on the gun, the stobe flashes and shows the timing mark on the harmonic balancer.

[Phil_F_NM]

Toss it over to the SL bunch.

Phil Forrest

[vstech]

Originally Posted by Stretch

What on earth am I meant to do with this??????

I guess if you're not allowed to take the car to bits, you gotta buy these newfangled "tune up" tools... sorry.

at least you don't need a dwell meter with it...

My first light had to be wired inline with the spark plug... actually had to attach the wire to the spark plug, and hook the spark plug wire to the tool... (have I been doing this too long?)
inductive is MUCH better...

what's the oldest auto repair tool you remember using? I used to have go adjust distributers with a flexible allen wrench... through a little slide window in the cap...

also had a sun spark analyzer... and an old battery tester with a giant knob you turn to load up the battery for amp testing...

[Stretch]

Originally Posted by vstech

...

also had a sun spark analyzer... and an old battery tester with a giant knob you turn to load up the battery for amp testing...

Mary Shelley move over - that sounds amazing - did it make a guchung buzzing noise when you wrestled the giant knob from its place of rest?

I think the oldest (historically) tool that I use to this day is a hammer!

[Stretch]

...I've had my joke and I kind of expected reactions like this. It was good giggle but there's another bit of kit that I'm hunting down to go with this bit of sheet for gassers (that admittedly will be also used on my W201) =>

Gunson | 77089 | Diesel Adaptor For Timing Lights

Now at 200 quid I'll not be buying but there are other manufacturers of similar stuff that I might be able to find at a lower price. I might even have a go at making my own - 200 quid in the parts used in that thing goes a long way...

...anyway this is still a bit of a pipe dream. It has been discussed before here =>

Timing with diesel pulse adapter and Strobe light

The problem that has always been "about" though is that whilst you've got the gasser timing light and the bloody expensive clamp and a box containing perhaps three electronic components to connect to the timing light you don't know the settings that you are meant to use.

BUT you do NOW!

(Forum user) Govert nudged me in the right direction to the non turbo section in the German language W123 FSM.

Here's the data for the begin of delivery



So for a non turbo OM617 you'd be arsing about with a drip test setting up the begin of delivery at 24 degrees BEFORE TDC

(PeachPartsWiki: How to Set IP Timing via the Drip Tube Method)

Now begin of delivery is different from actual delivery - point of release - which is what you measure from the clamp that goes on #1 injector line which sends an electric pulse to the box of tricks which then makes the light in the strobe flash.

The settings for this are given here =>



So actual delivery for a non turbo OM617 happens at 19 degrees at 1000 rpm (and 70 degrees C oil temp)

Cool eh?

Data for the OM617a doesn't exist in the German FSM 'cos even there they are arsing about with the little nick in the spinning part of the IP that gives the "false" AFTER TDC data given for the RIV testing / A-B "timing lights" method.

[Stretch]

Oh yeah forgot to say

1) Data for the turbo can be guestimated from the relationships above

2) This relationship will work for low rpms - below about 2000rpm where the timing device does not start doing its "advance / retard" work

3) This data / method could also eventually used to see the difference in advance / retard operation of the timing device to see if those springs are still doing their jobs after all of these years!

[barry12345]

Originally Posted by Stretch

What on earth am I meant to do with this??????

If you are an all diesel guy. Perhaps anal inspections?