TWM & GMECM

[Bruce Plecan]

If your doing, or planning on possibly going DIS, then the Crane wins, and
get an uncut spare wheel or two.  Alllison used to just about give em away
when you asked for em.
  For the Dissy, it's just like a point signal.
  For DIS, they most often use (4 cyl application), use 6 notches (equally
spaced), and one offset 10 degrees from one of them.  I you get serious
about the DIS, I'll scan a diagram showing the notches/offset/which notch
fires which coil pack etc..
Grumpy

| It is a Nissan U20 engine if that tells you anything.  There is a
Pertronics and Crane/Allison kit available if that helps.  How many
| triggers/crossings do the GM distributor type systems usually use?
| (I'll look into it myself)

| Yes, the TWM's have TPS's (various types available),so that part is easy.

| >always asking for application, and engine specifics.   Like free
breathing 4
| >cyl. tells me absolutely nothing.  I have meet folks here that can do a
| >vulcan mind meld with an ecm, but not one that can tell more then what is
| >written for what someone is working one.
| >  If you really are seriou about EFI, and learning then contact
| >General Motors Training Materials
| >MSX International Marketing Service
| >1426 Pacific Dr
| >Auburn Hillls, MI  48326
| >(800)  393-4831
| >Their book,  GM Fuel Injection Diagnostics, gives a good over view of the
gm
| >systems, and options for some components.

| Thanks, Sounds very good.

| >Then for like TPS Switches you need to do alot of junkyard hunting or
find a
| >parts house that will let you look at the AC Delco Emissions Book.  In
the
| >back it has pictures of the various TPS switches, IAT, CTS, etc...
| >If it has points then there probably is a LED conversion kit for it, then
| >you can sometimes make a new shutter, and all of a sudden everything is
done
| >for your DIS.  All that needs done was generating a conversion from the
coil
| >driver to operate the gm sensor input to the module...  Take a dissy cap
cut
| >the top off, glue/epoxy a flat top on it, and you have one very trick
| >cam/crank posistion sensor, that needs no maintainence.
| >  For TPS, there is always the option of driving it off the acc. pedal
| >linkage (thou mounted at butterflies best).  I'd bet TWM has one with TPS
on
| >it.
| >Grumpy