[T3] D-Jet /L-Jet

[Jim Adney]

On 13 Feb 2013 at 23:01, Greg Merritt wrote:

> Le Feb 13, 2013 à 19:28, Jim Adney <jadney at vwtype3.org> a écrit :
> 
> > I don't know about the Volvos. Which ones? Do you have any 
> > references?  
> 
> This caught my eye:
> 
> http://en.wikipedia.org/wiki/Volvo_164

Okay, cool. There WERE 6-cyl D-jet cars. Good, I learned something 
today.
 
> http://www.164club.se/broschyr/32-71.pdf

Scroll down this brochure a little less than half way, and you'll see 
a D-jet brain opened up. Note the finned heat sink on the left side. 
I've only seen that on the 8-cyl Mercedes; it dissipate the heat from 
the transistors and ballast resistors that drive the injectors. Our 
Type 3s get away without that extra heat sink because we only have 2 
sets of transistors and resistors and because our brains sit in the 
intake cooling airstream.

Now look closely at the open Volvo brain: There are THREE sets of 4 
wires leading from the PC board to whatever's in that heat sink. In 
our brains you'll find TWO sets of 4 wires. That means that the 164E 
D-jet has THREE trigger points.

If you scroll down about 80% thru this .pdf, there's a better photo 
of a 164E brain with the 3x setup.

I've looked and looked, but haven't found a picture of such a trigger 
point yet.

So far, it looks like Volvo made the D-jet 164E for 4 years, '72-5. 
The first 2 years it used the same trigger points as the 144E, which 
had 2 contacts, same as ours. But in '74 they switched to a different 
Bosch part number. At this point, I'm guessing that they went to the 
3x system, but I haven't seen any proof of that yet.

To add to my confusion, this brochure appears to be from 1971, 
introducing the '72 model 164E. So how can it be showing a 3x brain 
if the '72 uses the same trigger points as the 144E?

> http://www.volvoforums.org.uk/showthread.php?t=139803

Yes, that's the 005 part # for the 144E and early 164E trigger 
points. Later 164Es got an 011. (Our cars, being first in the D-jet 
line, got 000.) Too bad he doesn't show a photo.  

I'll head down to a shop I know one of these days and see if they 
have either of the Volvo parts in stock.

If you're interested in what a 4x Mercedes set of trigger points 
looks like, here's a set on ebay:

http://www.ebay.com/itm/290851503582

Be glad we're not in THAT market! That's actually a pretty good price 
for that Mercedes part!

BTW, I can reset our trigger points for MUCH less cost than a new 
set, and I THINK I can reset the Mercedes and Volvo ones similarly, 
although I've never actually had one of them in my hands.

I'll take my fixture with me when I go looking for Volvo trigger 
points.


-- 
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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