Injectors

The first modification of the throttle body was for the injectors.
It was originally attended for mechanical injectors so some machining had to be made to fit the new generation electronic injectors. These new injectors was kindly donated to me by Deep Valley Workshop. So after some drilling, milling and grinding they fitted like they was originally intended to fit the vintage little gem.

Throttlebody

A fairytale with so many stages.
This long petroleum supply story began when I first saw a picture of the amazing looking long intake for the Shovelhead. I instantly fell in love ! Then the almost never ending story with the Dellorto dominated my driving and Speedshop time. This money consuming project went from dream to almost a nightmare. After so much money and time I had a bike that didn't run under 2000 rpm and not over 3000 rpm. Driving it was truly a challenge.
Without all the help from Matt at Eurocarbs this have journey had been a disaster from day one but there I got help and comforting words and parts  many, many, many, many  times.
But the mighty Dellorto got the last word, the Dellorto(this?) don't want to feed a Harley engine, Period!!

Thoughts about EFI begun way before this nightmare, but really took off when I found a pair of vintage Tecalamite Jackson mechanical throttle bodies at eBay.
The nice thing with those throttle bodies is that they are direct replacement to Dellorto/Weber/Solex carbs and this solves many installation problems. And I can still keep the mighty look I fell in love with in the first place with this application.
And the saga begun for real when I opened the box...

Signs...

My life ain't just the Speedshop, I also need to keep the cashflow balanced.
The money can't just roll out when buying parts for all the toys in the Speedshop so a day job is required.
And to save up the extra cash a brought lunchbox is one way to save up.
But a sign that I'm on the right path revealed itself one day in the lunch box...

Intake Air Temperature

Another thing that needs to be monitored is intake air temp.
First made a hole in the air filter bracket.
Then I welded the supplied stainless bung with the TIG. A not so challenging task but it had to be done. And after that it was just to thread in the IAT sensor.

Cylinder Head Temperature

More sensors. This time the CHT (Cylinder Head Temperature) sensor was next in line. The bike actually came with such sensor when new.
But now it was time to upgrade it more post millennium standard so the EFI system get the input it needs.
Autometer had a sensor that seemed to fit, so I ordered one from US.
When it arrived it was just what I have been looking for.
But the mounting hardware was not solved.
I made a aluminum spacer and than a nut with 1/8" NPT thread.
It paired up nicely with the stock hole in the rear cylinder head.

Size comparison

The nut made and ready for assembly

The final mount

Fuelrail - the end.

The Fuelrail didn't turn out like I wanted so another one was created, but this time I put much more love, time and effort. And now it turned out great.
A quick tour to get it zinc plated to protect it and give it the shine it deserve.

Fuelrail - the beginning.

This project became longer and more labor intensive than I hoped for.
I started with some square pipeing and bungs. Actually the square piping I had over from the dog cage project and the two bungs I made in my lathe.
And it started like this.