2.8 turbo into a 86 bighorn

[varnz]

Hey has anyone done this conversion yet? I know that the gear box will mate up ( due to having g a spare one to test and see) But I am not sure about the electrics etc. Like the diesel pump has two extra connections, one seems to be a throttle position sensor two two micro switches and the other is attached to the diaphragm on top of the pump that has the line for the turbo, I guess that is to deliver more fuel under boost.

1/ Are these needed or can I wire the pump the same as the c223T motor I had before.

2/ The alternator is on the opposite side is that going to matter and if so what do I do?

Thanks Paul

[jjcymru]

extend the wiring for the alternator.

you dont need the microswitch unless your planning using air con. just need to wire in the two solenoids with 9v or more.

the fuel boost compensator is pressure actuated by the vac pipes not electrical.

[varnz]

Awesome that is what I thought about the boost. Thanks a Heap

[varnz]

ok here is the next problem....
Joining the motor and gear box is there any easy way to do this? and has anyone experenced this before?

[geeves]

You said they mated up ok in an earlier post. If this is the case then it should be a simple line up and bolt together remembering that things are very heavy

[varnz]

Yeap you are right. I was trying to cheat a little by leaveing the pressure plate loose and then making it really easy to line up the clutch plate. then you tighten the bolts through the hole in the side of the bell housing once its all together. worked well on the smaller motoer but that has a 7 in flywheel not a 9 inch one...... so not enough room and then it helps to have it all lined up too.

[geeves]

I hope your useing the 2.8 clutch assembly. The earlier 2.3 one aint going to do the job for long. Hopefully the gearbox spline is the same

[Garth]

If you can use a clutch alignment tool, or take the spline out of your spare gearbox and use it to align the clutch plate before you fit the gearbox to the engine the it is heaps easier, just need to turn it slightly to align splines and should slip straight in.
Hope it all goes well for you.

[varnz]

Yeap using the 2.8 flywheel etc, and have lined everything up no worries... I did do a dry run with out the flywheel and clutch assemble earlier to check for the mounting bolt holes. Heres the interesting thing, the whole thing will bolt up tight, but there is about 1-2 mm short of clearance between the back of the flywheel and the bell housing. I am in the process of getting another rear engine to gearbox mounting plate so I can cut out the center and make a "spacer" to get the clearance.

[impaul]

should have an inspection plate at the bottom of the bellhousing,leave your pressure plate bolts a bit loose,once all bolted in,get under the truck and tighten them up through the inspection plate,just turn the engine over by the pulley...thats how i did mine...end up with a perfectly aligned clutch..

[varnz]

Yah thats how I did it with the c223-t engine. There was heaps of clearance around the flywheel etc in that and no problems. With the larger flywheel and clutch assembly there is no room at all.

[geeves]

Might have to get the later gearbox. Also has 5 speed and you can shift beween H4 and 2wd at up to 100kph.(Ive never done this above 50kph but book says its ok)

[varnz]

Ok That would work but Im doing this on a next to nothing budget... so the original gearbox stays.... however I got hold of another mounting plate and got an engineering firm to use a plasma cutter to cut out a flywheel sixed hole in the middle of it, bolted it in ( sort of need some longer bolts) hey presto... the engine turns now,

I dont think that I would want to engage 4wd at any speed....