1y swap - vacuum pump question

[saudijoker]

Hello, i,m in the precess of swapping a knackered 1.6na diesel (which i was told by the previous owner it was not the original and had come out of a golf- not sure ) for a 1.9 1y. I've done lots of searches on here and have all the info and bits (i think) to carry the swap out, but have come accross a problem with the oil pump drive. My bus is a 1982 joker from saudi arabia and does not have servo assisted brakes. Don't know if this is because of its age or where it came from...

So the problem is that the old 1.6 engine has a machined cover which clamps in place of the vacuum pump and a drive gear on the end of the oil pump ( which is splined instead of having a flat on the end like the 1y). The drive gear picks up from the end of the intermediate shaft (I think thats right) and does the same job as the bottom part of the vacuum pump would. Sorry if all this is obvious to any or all of you, but tying to give as much info as poss...

So here's the real problem. The drive gear from the 1.6 and the 1y (on bottom vac pump) are different sizes, so when the oil pump from the 1.6 is fitted to the 1y and the drive gear attached it doen't ingauge with end of the intermediate shaft.

So in a very round about way, does anyone know if i can fit the vacuum pump, but not attach it to anything, and then use the 1y pump withe the 1.6 pickup. Or any other ideas??

Thanks for looking

[lhd]

There are two different vacuum pumps for the diesels and the difference is in the drive cog,early/later.
You say there is no servo, although the vacuum pump is not where it should be it must have servo brakes with the vacuum coming from somewhere else, you couldn't press the brakes otherwise.
I'm no expert but have never heard of a T3 without servo assisted brakes.
The servo would be at the top of your pedal cluster under the dash, its a large black round brake drum shaped thing, you can't miss it.
Sorry if you really do know what a servo looks like and all but lots of people havn't a clue what a servo even is.
Rob.

[Oldiebut goodie]

There hasn't always been servo assist on braking. The brakes still work without a servo - you just have to do it the old fashioned way by pressing harder.(No servo assist on rod brakes).
It is not unusual in 3rd world countries to do things like that - given that spares are impossible to get. If you saw some of the ways that mechanics keep vehicles running in rural Egypt you wouldn't query the fact. There is no vacuum pump as stated - it could have been an industrial engine which wouldn't have needed a servo.