Oil Cooler & Pump 2000CC

[outrun1984]

Removing my engine to do the clutch in a week or so. I want to replace the oil pump and oil cooler. What brands have everyone had the best luck with. So far Bus Depot has the pump, and a new VW cooler or a aftermarket by Euromax. Is the VW cooler worth the money? Any input would be great! Thanks!!

79 Westfalia 2000CC
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1979 Westy, Mexico Beige, 2.0 FI, Petronix, KYLE Fuel Injection Harness upgrade.
Going Furthur...in search of the sound.......

[Randy in Maine]

Why do you want to replace them?

[outrun1984]

Pump is on its way out, the red light comes on at idle and low rpm when warm. it wont pump sae 30 anymore just 20w50.....and im almost sure that the cooler is beyond plugged up with garbage. Just trying to keep her cool on the road.
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1979 Westy, Mexico Beige, 2.0 FI, Petronix, KYLE Fuel Injection Harness upgrade.
Going Furthur...in search of the sound.......

[airschooled]

[old DKP driver]

You should state the mileage on your engine and then proceed to check the
oil pressure.

Where did the 'Garbage' in your oil come from ? have you pulled the sump
screen to verify this ?

I have not built an engine in two years but, you will need to be careful in
buying a pump since many do NOT fit the bore in the case.

The pump has a crush factor of .003 to .005 and the older Schadek pumps
were poor quality. the stock bore in the case is 70.07 mm (approx.) and the
aftermarket pumps were (approx. 69.97 )

I ended up buying my 26 mm pump from Gene Berg ent. which is a hard anodized Schadek pump.

Option : Stock pump rebuilt or have yours rebuilt.
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V.W.owner since 1967

[aerosurfer]

The type 4 pumps are really pretty tough... the low oil pressure may not be from that. have you pulled and/or replaced the pressure relief plug and spring? Bearings may be getting worn, galley plug starting to leak as well as Both front and back main seals. all that would add up to a drop in pressure as the oil thins out. Remove the pump and take it apart and replace the gasket inside of it.

Does the Cooler leak? If not and you are going to go through the trouble of removing it, why not just clean and pressure test it first, if its that clogged think of what else is circulating in the motor.. might be time for a rebuild anyhow. Otherwise it may need to be blasted clean from the air flowing over it.
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Rebuild your own FI Harness..My Harness

77 Westy 2.0L Rockin and Rolling Resto!

72 Sportsmobile (sold)
79 Tran$porter... Parts car money machine (gone)

[rustybusjef]

You might want to check your oil pressure and maybe even temp before you waste your hard earned bucks on something you dont need. Your bearings are probably just worn a bit , it happens , if thats all it is try thicker oil or an additive . As far as the cooler , clean it with a good solvent and then weigh it , should be the same as a new one .

[Wildthings]

I agree with others that your low oil pressure is more likely to be a sticky relief valve piston than an oil pump problem. Type 4 pumps are pretty decent. I am still running my original pump, which puts the total mileage at something like 400K. The most common failure for the Type 4 pump is that the internal o-ring hardens and cracks with time. This will cause the pump to drain down after shutdown and not reprime easily when you restart the engine. The other failure mode is that the idler shaft works its way out and begins to interfere with the bolts or rivets on the timing gear, when this happen engine failure as imminent.

You should remove your relief cylinder piston and make sure it moves freely up and down in its bore.

[outrun1984]

Duly noted! I will check the relief first. Seems to me at 105k it runs immaculate. No knocks, ticks etc. Just had a new cylinder head put on the 3 side. Just pumps like hell 40-70 lbs at startup, warm at 50mph she's still pulling 30-40 lbs. of pressure. Hot say 225 degrees oil temp which is where she sits usually. It varies. According to my gauge. Where is this pressure relief valve? Repair kit available? Just bothers me seeing the light come on at low rpm. I will have to blow the cooler off with air, hope its not too bad from a previous mouse.
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1979 Westy, Mexico Beige, 2.0 FI, Petronix, KYLE Fuel Injection Harness upgrade.
Going Furthur...in search of the sound.......

[curtis4085]

Replace your oil pressure sender!
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Special Thanks to:
Headflow Masters - Vista, CA
www.headflowmasters.com

[Desertbusman]

The common rule of thumb is 10 psi per 1,000 rpm Minimum. Of course you can analyze it per the pressure/temperature/rpm/viscosity requirement that VW publishes in the service manual. So you can evaluate your lube system yourself by that criteria and see how it stacks up to what VW says is go or no go.

Temp is the major variable in pressure because of viscosity being dependent on themperature.

People have differing attitudes but no way would I let my engine continue running at 225 degrees. Either shut it down or slow down so it will run cooler.

Seems like there is a lot to evaluate on your engine. Yes, the pump might be about done for but you have mentioned other points that also add to the situation such as bearing clearances. A cooler gooped up and junked up internally does not reduce oil pressure but it might increase pressure until the relief takes control. Clogged up externally just causes it to run hotter by reducing oil viscosity.

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71 Superbug
71 Westy

[1967250s]

Depending upon the wear in your engine, it could be a number of things, from clogged filter, to worn out bearings. A new cooler is just a band-aid. You mentioned a new head, too. Why?? Could the lifter rods be set too loose? And high temps point to worn rings/cylinders and other things. How many miles on the engine?

[outrun1984]

Well the engine has 105K miles on it. Head was done 5k ago. Head was done on the number 3 side as the number 3 dropped a valve. Compression is pretty uniform across all four cylinders now. She usually is around 220 cusing around. If I am rolling down the highway around 55 or so thats just where she sits. If I start goosing or hit lots of big hills it climbs to 240 and I back off. If I am going up a large hill and it hits the 250 mark I shut her down and back way off. I have always had a feeling the oil cooler was never doing its full job with the high volume of air that flows through there. Engine bay is sealed up tight. So in the bandaide world...at least getting me through the next 3-5 thousand miles (which is all I will put on it this year) Some easy things to check are the oil cooler and pressure relief valve. Thought I saw on the Bus Depot a relieve valve kit for sale.
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1979 Westy, Mexico Beige, 2.0 FI, Petronix, KYLE Fuel Injection Harness upgrade.
Going Furthur...in search of the sound.......

[Wildthings]

Take a garden hose and nozzle and blast up through your oil cooler from below. Do this long enough for any oily greasy crud to blow off the top. You can use a mirror down the #4 spark plug access hole to kind of see how bad it is in there. Of course if you just had the head off, hopefully whoever was in there would have cleaned the outside of the oil cooler for you. Why don't you try running a 5w-40, 5w-50 or even a 0w-50 synthetic oil and see if that brings your oil temps down. The VW system is designed to heat the oil until it gets the oil viscosity down to where it wants it. It will make a high viscosity oil (like a 20w50) run hotter than a lower viscosity oil like a 5w-40 or a 0w-50.

[outrun1984]

Interesting! Couple years ago I tried SAE30 and to my dismay the oil light was on while running and pressure dropped as soon as it got halfway warm. I have not tried anything other than 20W50. How do you think the other ones will work such as a 0w30?
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1979 Westy, Mexico Beige, 2.0 FI, Petronix, KYLE Fuel Injection Harness upgrade.
Going Furthur...in search of the sound.......

[Wildthings]

[outrun1984]

Well I will be checking / cleaning the relief valve..I will also be the first one to rate multiple oils and give an idea as to what a worn motor will do. Let me see whats out there....Hmmm 0W50 sounds interesting!
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1979 Westy, Mexico Beige, 2.0 FI, Petronix, KYLE Fuel Injection Harness upgrade.
Going Furthur...in search of the sound.......