Another 120 project begins

A bit more progress to date.


Block cleaned up and prepared for the head to go back on (spot the new bolts)

https://www.aulro.com/afvb/images/im...2013/11/18.jpg


A couple of head bolt threaded holes needed cleaning out. An old headbolt with a line of a thin angle grinding disc through it did the job beautifully.

https://www.aulro.com/afvb/images/im...2013/11/19.jpg


The head's been cleaned up and is back on.

https://www.aulro.com/afvb/images/im...2013/11/20.jpg
Word of warning on workshop manuals - the one I have shows the reverse head bolt tightening order from what it should be. (Bolts should be tightened from the centre of the head (stiffest part) spiralling outwards, rather than from the outside in (as shown in my manual). I'll post a pic of the manual and a source if I can find it.

Rocker arm assembly on, valve clearances set and a 4BD2-T injection pump trial fitted, timing marks aligned

https://www.aulro.com/afvb/images/im...2013/11/21.jpg

Fits well for the most part. As far as I can tell, I only have to modify the throttle cable retainer that's bolted to the oil cooler, in order to match the height of the new pump's speed control (throttle) lever.

https://www.aulro.com/afvb/images/im...2013/11/22.jpg


That and a couple of other things to do before I have to pull the engine and gearbox out of the truck to progress further. It'll have to wait until after next weekend. Hopefully all the other bits and pieces I need will arrive before then.

Was the 4BD2t pump adjusted to match the needs of the 1T or is it a straight up 2T pump?

I ask because 2T pumps are very easy to find over here and where the only ones that had the boost compensator and I would like that.

Quote:

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Originally Posted by DT80series

Was the 4BD2t pump adjusted to match the needs of the 1T or is it a straight up 2T pump?

I ask because 2T pumps are very easy to find over here and where the only ones that had the boost compensator and I would like that.

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Early 1T's (before the change to Garrett turbo's), had the boost compensator. I would be surprised if you couldn't swap the compensator from a 2T governor to a 1T governor.

Quote:

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Originally Posted by DT80series

Was the 4BD2t pump adjusted to match the needs of the 1T or is it a straight up 2T pump?

I ask because 2T pumps are very easy to find over here and where the only ones that had the boost compensator and I would like that.

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I swapped my boost compensator over to a newer pump without. Before I found out the newer pump had a different taper for the drive-gear and wasn't usable.

It's just a hole through the rear housing for a plunger rod and a flag on a lever inside for the plunger to push against and restrict rack travel. The rest just bolts on the back of the pump.

It's a straight up 2T pump, but I'm using a VNT turbo that builds boost a lot sooner. the differences between a 1T and a 2T are discussed in the thread below:

http://www.aulro.com/afvb/isuzu-land...ump-4bd1t.html

I'll let you know what the verdict is once its up nd running.

Cheers

Bojan

Thanks guys, Been keeping an eye out for a 2T pump cheap that I can grab one off of. Not sure it will work with my filter adapter though now so want to keep the investment minimal.

Cheers,

Jeremy