thrashlux wrote:I have done quite a few of the 1hdfte conversions and the 79 is a much easier option than the 100 1hdfte because of multiplexers and imobliser systems
i have done 1 100 series 1hdfte into 80 series 1hz it required a bit of fiddling to get it to run due to the immobiliser you will also have to fiddle the tacho using a tacho from a petrol i changed the resistor values inside the tacho to alter the voltage divider network although in this case it may be easier to remount the new tacho in the 100series cluster because most toyotas run a 4cl tacho on there v8s
it will be money well spent to buy the toyota body electrical manual and the engine book they are far superior to any other source of information you would be looking at less than 200 bucks for the two
that is a lot cheaper than going to ashley and martin for a hair transplant
best of luck
thrashlux
i cannot see this engine presenting much dificulty there are always ways around things you just have to think of them
Hi again all. Just thought I'd give you an update....
I had to put it all on hold for a bit, but I've just started back with it now. I also had to do some repairs to the V8 (from accident damage), and I wanted to start it in the 79's chassis before I did the conversion just to make sure it was all OK.
At this stage, I've fixed and run the V8, removed the ancillaries, the wiring loom and the transfer case. I'll be lifting the V8 and box out of the 79 next week.
So far, it all seems to be feasible but it's not going to be easy.
The 100's chassis is slightly narrower (~40mm), but that shouldn't be a problem as there's plenty of clearance. I'm keeping the gearbox out of the 79 as it's stronger and it has a long bellhousing to push the V8 forward in the engine bay. I'll be attaching that to the 100series transfer case to retain constant 4WD and ABS (Without constant 4WD, the 100series ABS is disabled). There may be some minor panel work required to fit the engine in the bay, but I'll have to cross that bridge when I get to it. I'm also going to lift the diff ratios by swapping the crown wheels/pinions from the 79 to 100 diffs.
I'll be installing almost the whole 79series wiring loom in parallel with the 100series loom, and then just connecting what I need to. I decided this would be the easiest way to integrate the two looms. Basically, the 79's loom will run the motor and the 100's loom will run everything else. I expect some issues with gauges, but I'll have to wait and see.
Unlike the older 79's, this one has the full Toyota electronic immobiliser system fitted to it. Same one as the 200 series. I spoke to a locksmith, who advised the best way to do the immobiliser will be to have a Lexus key cut to the 100's ignition barrel, and have it programmed to the 79's immobiliser ring. The 100's key won't work the 79's immobiliser, and the 79's key won't fit in the 100's barrel.
For anyone else interested, I recommend keeping an eye on the salvage auctions and buying a whole written-off car, rather than buying the bits from a wrecker. I paid $10750 for a whole car. A wrecker I spoke to wanted $15000 just for the motor! Check out manheimfowles.com.au and pickles.com.au for info. You can set up a notification system that will email you when a vehicle you want is listed. Another advantage is that you'll have the 79's parts to sell afterwards to get some of your money back.
I'll keep you posted as the conversion progresses.
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