Electical Articles

GM-HEI Conversion .

Rob writes:.

Doc,
.

I am converting my 78 Z coupe's HEI to the GM HEI and I have some wiring questions for any of you who have done this. I am using a Jacobs coil presently and I would like to eliminate the ballast resistor and wire the distributor to the HEI and the HEI to the coil. I am not sure the coil is an internal resistor type but I can check that through Jacobs. Can I wire it this way,or do I have to retain the ballast resistor?.

Thanks in advance.
Rob Sime.

Doc replies:.

Hi Rob,.

Doc here, You need to contact Dr. Jacobs about the specific type of coil that you are currently using to determine whether you need the ballast resistor or not..

The next question that I have to ask is the purpose to eliminate the original factory Trig Box? Did it go bad? Or are you just looking for something else? Don't forget that you must supply a tach signal to the ECU (Electronic Control Unit) so that the injectors will fire..

There is a guy up in Gary's neck of the woods named Kyle Hagemann (http://www.sonic.net/~kyle/ztech.html ..ed.) I believe. He has a wiring diagram for the conversion you are going to do. please remember that you need to use an aluminum plate to mount the module on with dielectric grease so that it will act as a heat sink. It
is a straight foreword job that you should have up and running quickly..

I hope that this helps you.................
ZDOC OUT.

<BACK TO ELECTICAL.

 
'82 280ZX Ignition Trauma
A '78 280Z that Won't Start
280Z Dies Suddenly
300Z Starter and Emissions Problems
Alternators- Sorting the Good from the Bad
Wiper Motor Problems
Ray's '71 240Z, Electric Fuel Pump Problem
Wiring Problems on a Z....NEVER!
Alternator Belt Problem
Alternator Belt Alignment
Fuse Box Meltdown
'71 240Z, Headlights Died  
'78 280Z, GM-HEI Conversion
'71 240Z, Rough idle, now hard to start
'75 280Z, Cutout problem
Bob's Distributor Problem
Robert's Z Pozessed?
Darlene's Display Problem
Sticky Dash Light Switch
 

"Thats what I get for going to Clutch-Mart" "Frosty" wrote Doc: "That is what I get for getting the job done at "Clutch Mart", And yes there is noise when the clutch is disengaged or the trans is in neutral. Any info will help." Read Doc's answer to Frosty and other Datsun enthusiasts who have sought his advise for the last couple decades on Doc's Tech pages.

 

Nissan IMSA Racer #83 For Sale Nissan IMSA racer #83 for sale1992 Nissan GTP ZX Turbo is being offered for sale by Canepa Design, Scotts Valley, California. Nissan GTP cars won four straight championships from ’88-’91.After Nissan shut down it’s IMSA racing team chassis 90-06 was destined for Nissan’s corporate museum, somehow that didn't happen and now it is for sale!


Doc Joins other members of ZONC at the Blackhawk Automotive Museum A Datsun / Nissan extravaganza is being held at The Blackhawk Automotive Museum on June 30th. Look for Doc's photos and a report of the event here in the next few days.

280Z Dies SudenlyTravis here(Zonc #98029), in Fresno. I have a problem with my 1977 280z which I can not figure out. It started today. Just driving down the road the car shut off, I disengaged the clutch and it started right back up. I drove it home only about a mile. Tonight I drove it to FSU and it shut off 3 times on the way there, while it was cold and running at temp. I just hooked up a test light to the fuel pump and drove the car. The light is inline with the pump so when the pump is getting power the light is on.
Read Doc's Solution

Got a an old Datsun / Nissan you don't want? We are always looking for old Datsun / Nissan vehicles. Let Doc's team know if you want one or have one. Doc is alway up for making someone happy with a new Datsun / Nissan project.
We are also happy to list your Datsun / Nissan in our new cars for sale section of this site, email or call us for details. We have no cars presently for sale - so let us know if you have one.

Rare parts - Doc cleans out his garage Due to limited space at Doc's Auto Clinic's location Doc is being forced to clean up his shop. He is uncovering forgoten NOS (new-old-stock vintage) Datsun and Nissan parts every week. If you need a part email or call Doc. He might have it... somewhere.

©2007 Docs Auto Clinic