Oil pump drive,,

[TUFFY]

Is there a drop in oil pump drive for a 1.6 without a vacuum pump?  Or has anyone modified a pump drive and cut off the vacuum pump part of it?

[CRSMP5]

special pump, gear and cap...

[R.O.R-2.0]

there ARE setups out there to do that, but they are basically unobtanium..

they were only used prior to 1978, and only on 1.5 diesels, with very small pumps..

only part of the setup i have ever seen, is the oil pump..

its basically the same setup used to drive the oil pump on a 16v, but the gears are reverse cut, because the diesel IM shaft spins backwards..

[RabbitJockey]

i have the full setup off of a 1.5 but its all at my brothers house or i'd take pictures.  there was recently a thread about this, do a search there was lots of good info.

[danster]

That would be this thread.

http://www.vwdiesel.net/forum/index.php?topic=32438.0

[R.O.R-2.0]

i have the full setup off of a 1.5 but its all at my brothers house or i'd take pictures.  there was recently a thread about this, do a search there was lots of good info.

well, hang onto it..

and if you ever end up using it, be sure that you use the 2.0 16v oil pump..

the stock oil pump for that setup has like 22mm gears.. smallest pump ive ever seen..

16v oil pump has 30mm gears..

[theman53]

I think you could just pop the top off the vac pump and pull the vanes out. Reassmble and you woudl have no vacuum being made. You could plug the hole in the barb as well.

[TUFFY]

The vacuum pumps I have don't have vanes, they have that big diaphragm on them.

[TylerDurden]

I think you could just pop the top off the vac pump and pull the vanes out. Reassmble and you woudl have no vacuum being made. You could plug the hole in the barb as well.

I'm not sure pulling the vanes and plugging the lid is enough.  The oil pressure is restricted by the vanes and if unrestricted, may lower overall oil pressure.

Same question with the early diaphragm version: how much will defeating the pump affect oil pressure. The older may be better... I don't think I have one to check. :-/

[TUFFY]

I can leave the vacuum pump on, just would look allot cleaner if I could get rid of it. Also give me more room for steering shaft in the tractor if the pump wasn't there.

[theman53]

I think you could just pop the top off the vac pump and pull the vanes out. Reassmble and you woudl have no vacuum being made. You could plug the hole in the barb as well.

I'm not sure pulling the vanes and plugging the lid is enough.  The oil pressure is restricted by the vanes and if unrestricted, may lower overall oil pressure.

Same question with the early diaphragm version: how much will defeating the pump affect oil pressure. The older may be better... I don't think I have one to check. :-/

I never saw any oil port into the vanes, I thought it ran through to the top and came out that way. Either way, I don't think you would loose 1 psi of pressure. I would think it would be less than 1 main bearing worth of oil.

If you were really worried about oil through vane loss you could take it out and weld the vane area shut and then reassemble.

[TylerDurden]

AIUI, the vanes are pushed out by the oil pressure and oil is also pushed past the vanes at the top to lubricate and cool the rotating assembly. The excess oil is pushed out of the pump to the crankcase with the air, much like a Mr. Coffee pushes water up to the basket (upside-down).

So, I rekon if the vanes are removed, oil will get pumped into the chamber without the vanes providing any backpressure and it will drain into the crankcase without restriction, other than the diameter of the exit port.

Not sure welding the vane feed shut would be advised, the bearing/bushing may need the lube.

[theman53]

The vanes are pushed out by the spinning motion. IIRC the oil flows from the top. I also think since it is unfiltered and I think un bypassed oil that it would have no effect on the oil pressure of the engine.

[bajacalal]

Do the industrial engines have a vacuum pump?

The vane type pumps are already a lot more compact, if you want to source one of those. Or I suppose if you want to sacrifice a pump you can take it apart and remove the pump part of it and leave the shaft and whatever bearing it has, and weld some sort of cap onto it. I don't see why you couldn't go that route but I've never done it.

[TylerDurden]

The vanes are pushed out by the spinning motion. IIRC the oil flows from the top. I also think since it is unfiltered and I think un bypassed oil that it would have no effect on the oil pressure of the engine.

The oil pushes out the top of the stem, but with the lid on, >100psi pressure builds behind the vanes. The vanes are too light to fling anyway.

There is a helical groove on the shaft below the vanes for lubrication that draws oil from the chamber.

I got some pics I'll share later today.

Sorry for the hijack, Tuffy, I'll try to get diaphragm version pics if I have one in the pile.