has anyone built / has used / is using the HEI (high energy ignition) kit from Dick Smith / Jaycar etc
Im thinking of trying one with the Pertronix kit
voltz Seriously Crusin Dubber
119 posts · joined Sep 2004 ·
HEI system kit
tassupervee That really hurts doesnt it!
1,171 posts · joined Sep 2003 ·
Is that one a later incarnation of the old "Transistor Assisted Ignition" with dwell extension?
If so, I have been using these ignitions for many trouble free years on various cars.
However, the circuit provides about 1/2 an amp of "wetting" current for the points. This is to give the points something to do and to keep them clean of oil fumes and built up grunge.
This wetting current, can mess with your pointsless ignition output (as it did with mine) and cause either a failure of the triggerhead or very bad misfiring as the battery voltage rises.
There are a set of three resistors on the curcuit board just in front of the points wire connection point.
Just remove 2 of these and the system will run fine.
Iffen you ever go back to points dun forget to resolder these resistors or oil fumes and dust can eventually cause missfiring.
L8tr
E
If so, I have been using these ignitions for many trouble free years on various cars.
However, the circuit provides about 1/2 an amp of "wetting" current for the points. This is to give the points something to do and to keep them clean of oil fumes and built up grunge.
This wetting current, can mess with your pointsless ignition output (as it did with mine) and cause either a failure of the triggerhead or very bad misfiring as the battery voltage rises.
There are a set of three resistors on the curcuit board just in front of the points wire connection point.
Just remove 2 of these and the system will run fine.
Iffen you ever go back to points dun forget to resolder these resistors or oil fumes and dust can eventually cause missfiring.
L8tr
E
Im not a complete idiot, quite a few parts are missing....
mnsKmobi Wolfsburg Wizard
589 posts · joined Aug 2002 ·
Very timely. I was about to put my Transistor Assisted Ignition back on my kombi after having problems with it. In the mean time I have put on a pertronix and was wondering what effect that "wetting" current would have.tassupervee wrote:Is that one a later incarnation of the old "Transistor Assisted Ignition" with dwell extension?
If so, I have been using these ignitions for many trouble free years on various cars.
However, the circuit provides about 1/2 an amp of "wetting" current for the points. This is to give the points something to do and to keep them clean of oil fumes and built up grunge.
This wetting current, can mess with your pointsless ignition output (as it did with mine) and cause either a failure of the triggerhead or very bad misfiring as the battery voltage rises.
There are a set of three resistors on the curcuit board just in front of the points wire connection point.
Just remove 2 of these and the system will run fine.
Iffen you ever go back to points dun forget to resolder these resistors or oil fumes and dust can eventually cause missfiring.
L8tr
E
The problems I had with the Transistor Assisted Ignition were to do with misfiring. It initially went away when I changed to a new coil but then came back after driving for several hours in warm weather. After scanning through the Silicon Chip magazine web site (it's their circuit) I suspect the problem was the unit overheating. I'm going to reinstall it and see if this is the problem.
barls Administrator Causer of Chaos and Mayhem
9,473 posts · joined Jun 2004 ·
yeah the first one lasted 60 seconds and the second lasted 7 months then died but worked well when it was going
“We all pay for life with death, so everything in between should be free.” Bill Hicks
the chaos project - click me
the chaos project - click me
tassupervee That really hurts doesnt it!
1,171 posts · joined Sep 2003 ·
keep us posted dude.mnsKmobi wrote:Very timely. I was about to put my Transistor Assisted Ignition back on my kombi after having problems with it. In the mean time I have put on a pertronix and was wondering what effect that "wetting" current would have.
The problems I had with the Transistor Assisted Ignition were to do with misfiring. It initially went away when I changed to a new coil but then came back after driving for several hours in warm weather. After scanning through the Silicon Chip magazine web site (it's their circuit) I suspect the problem was the unit overheating. I'm going to reinstall it and see if this is the problem.
L8tr
E
Im not a complete idiot, quite a few parts are missing....