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Cool! Djet 122!
Mine went through a number of changes between the time I got it running and the time I sold it. Many of these changes were intended to improve running or reliability in some way and none made any noticeable difference whatsoever.
Fuel Pump Mount: I mounted the fuel pump to the inboard side of the spare tire tub, in the little gap between the spare and the tank. I mounted it as low as possible in the hope that the car wouldn't starve for fuel. It never starved for fuel except the one time that there wasn't any fuel in the tank.
Return Fuel Line: Steel is probably a good idea but I just used rubber and zip tied it to the original line. Never had any problems.
I used the original steel fuel line on the supply side and it never failed to provide enough fuel to the injectors. I'm not sure why anyone would assert that you need to change this to a different size. We injected another 122 more recently and on that one, we also used the original fuel line for the supply side. I get the idea behind a larger diameter fuel line, but I don't believe it's necessary. The 2 Djet conversions I was involved with were performed on slightly modified engines - one was a 2130 with VV71 cam (this one worked really well, and the engine is now in my 444) and the other in a 2175ish cc B20 with an E head and an R cam. Not surprisingly, this one ran lean.
The first return line, which I planned to correct as soon as the bugs were worked out of the rest of the car, ran from the fuel pressure regulator along the bottom of the car and then to a T fitting that was between the tank outlet and the fuel pump inlet. This isn't the right way to do it, but it worked well enough that I postponed making any changes to the return line routing for 3 or 4 years.
People said it would run poorly when below a half tank. It ran the same (which wasn't poorly) full or (near) empty.
Tank Venting Cannister: I didn't use this stuff. Not the most environmentally responsible thing to run without, but I ran without it anyway.
Hope that's of some use.
Nicely done!
Cameron
Rose City
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