Datsun upgrade time!!
This one I have to give full credit to this guys write up!
For those who don't want to read through my post. Results = amazing!
So, lets start with the basics, my car started to miss when it was running for about 15 mins. Only at part throttle, a sign the coil packs were starting to play up. They are 20 years old so you cant blame them right!!
So after doing some research, confirming the numbers on the guys site I decided to embark on the upgrade. Unfortunately my phone camera is broken so I only have a few pics after the upgrade. A mate and I did this in about 2 hours total.
1. I purchased the igniter bypass from the US, I could have made my own however for the price 35USD it just wast worth it. I might have saved only a few $$
2. Purchased some brand new genuine Toyota coil packs, was able to get them for $50 each. #90919 - 02240
3. Purchased some brand new plugs for the coils
4. Purchased a second hand loom for the SR coil wiring ($70 too expensive in my opinion) anyway it did the job
5. I had some carbon fiber for the brackets to hold the coils
6. Needed to get an M7 Tab for the carbon
All up the conversion was about the $350 mark
The reason I went down this path instead of going the genuine SR ones was the bigger spark, proven conversion and ease of access for parts. It also eliminated the ignightor from the original SR loom! One less part to break.
1. I had to grind down one of the coil packs for the first cylinder to fit
2. ECU tweaks were done by a mate of mine in 5 mins
3. The second hand loom I purchased was quite brittle. I ended up stripping it all down and rebuilding the whole thing. Next time I'd just source the correct plug for the SR side and make my own
4. The trigger wires in the SR loom are big, to get them to fit in the new plugs was a little tough so I soldered as well. (Not a big fan of soldering these) however should be OK
5. Used an M6 tap for the first cylinder and a smaller bracket, you should be able to see in the pics
6. New coils are a great fit
7. 3d printed a spacer to allow me to cut 1mm of rubber from the end of each coil pack, yes the spacer was removed after cutting off the rubber
* Car runs MUCH better
* Boost seems to come on earlier
* Throttle response is much better
* Pulls like a freight train
* No traction in second at all anymore!