-
Diesel Pulse Adapter Info Thread
by
vanbcguy
on 18 Jan, 2014 10:55
-
So I know a few folks on here now have purchased and are using diesel pulse adapters for setting timing. Given that anyone doing anything M-TDI basically has to either make up their timing figures otherwise I thought it would be good to get some info together around what people are using, etc. The idea being that maybe this thread can become a sticky later on.
So, what I'm looking for:
- what kind of adapter you have
- any accessories needed to make it work with the VW?
- what kind of timing light are you using?
- any other info you can share
Thanks!
-
#1
by
libbydiesel
on 18 Jan, 2014 11:09
-
I have a snap-on pulse adapter just like this (borrowed pic):
With it, I use an Actron timing light that has the tach and advance features. Actron is a cheap brand, IMO, but the timing light has worked flawlessly for quite a few years. If purchasing a timing light I would strongly recommend getting one with those two features. The advance function meas you don't have to mess with degree wheels or counting flywheel teeth and making punch marks... The tach feature means you can adjust the idle accurately and calibrate your tach.
I got the pulse adapter off eBay as NOS for $80 shipped. The timing light was $100. No other accessories were necessary. I had the dial indicator already and was a bit reluctant to spend the money 'whimsically'. Looking back, it was an excellent purchase that proved more beneficial than I ever expected.
-
#2
by
rbremiller
on 18 Jan, 2014 17:23
-
I'm all over this. You'd think there would be some cheap, adaptable tech out there to make a simple module. The available new units I've found are $190.00 and up. Ferret and Gunson are two manufacturers.
-
#3
by
vanbcguy
on 18 Jan, 2014 18:56
-
Hey Andrew, you do 12° at idle, right?
-
#4
by
libbydiesel
on 18 Jan, 2014 19:27
-
Yes, I use 12° BTDC.
-
#5
by
libbydiesel
on 18 Jan, 2014 19:55
-
I'm all over this. You'd think there would be some cheap, adaptable tech out there to make a simple module. The available new units I've found are $190.00 and up. Ferret and Gunson are two manufacturers.
The pickup mine uses is pretty much the same as the piezo pickup that tinytach. Tinytach sells just the transducer for $60. I imagine that someone with a little prototyping skill could build up a signal processor easily enough...
-
#6
by
81 vw pu
on 18 Jan, 2014 22:19
-
-
#7
by
libbydiesel
on 18 Jan, 2014 23:42
-
That's a luminosity probe version. It will work in a similar manner, but the spec for timing would be different.
-
#8
by
92EcoDiesel Jetta
on 01 Feb, 2014 11:57
-
Yes, I use 12° BTDC.
Are there other degree markings on the idi flywheels (other than the TDC mark) or do you have to make your own? How do you make your 12 degree mark? How many teeth are on my 92 Eco flywheel? I am in the midst of a project, playing with piezo sensors and circuitry to make a diesel pulse adapter.
-
#9
by
libbydiesel
on 01 Feb, 2014 12:28
-
If you reread my first post it will answer your questions except how many teeth are you your flywheel. Obviously you can answer that question easier than I can.
-
#10
by
92EcoDiesel Jetta
on 01 Feb, 2014 12:46
-
If you reread my first post it will answer your questions except how many teeth are you your flywheel. Obviously you can answer that question easier than I can.
Well, if you trust your life to the accuracy of the timing light's advance feature, then you don't need to make your own timing mark.
I was hoping I don't have to count the number of teeth and that someone else has done it already.
-
#11
by
libbydiesel
on 01 Feb, 2014 19:50
-
You could always take the initiative, count the teeth and post it up in order to contribute something
other than your sense of entitlement. 
-
#12
by
TylerDurden
on 02 Feb, 2014 07:13
-
All the ones I've counted so far have 125 teeth.
IIRC, Mark in UK might have a different count on the Quantum.
-
#13
by
ToddA1
on 09 Feb, 2014 22:40
-
Is this method more accurate than the dial indicator method?
-Todd
-
#14
by
libbydiesel
on 09 Feb, 2014 23:59
-
Yes. More to the point it is measuring the actual start of the injection which is what really matters, and takes into account the injector break pressure and wear in the injection pump. The dial indicator does not.