Engine Rubber Seal replacement

[nytagawa]

Thank you.

The oil cooler is standing in the back. I understand that is called dog house, right?

The number 1/4" looks very small. I am very curious, How big the difference does 1/4" bigger diameter makes?


I was looking to order normal size pully.
Do you think this is good? (I hear bad things about "EMPI" products.)
https://www2.cip1.com/ProductDetails.asp?ProductCode=ACC%2DC10%2D5881

[Eric&Barb]

OK, that should be "Out Front" of the fan shroud for the oil cooler sticking out of the fan shroud. Front as in closer to the front bumper. All directions in the VW workshop & parts manuals are setup as if you are always sitting in the LHD driver seat. After all if you stand in front of your LHD bus, inspecting the headlights, and as you stand up to see the steering wheel thru the windshield it is not suddenly a RHD bus.

At several thousand RPMs it makes a big difference of how much air is pumped over the engine. We used to have to rebuild engines every 30,000 to 40,000 miles, not because the engines did not run, but because they are worn out from running too hot during the Summer. That hill that we used to be able to go over @ 55 MPH, became more like 45 MPH. Went thru a lot of steps to getting more air pumped over the engine and geared up the transaxle so we could do 60 MPH (instead of 47 MPH stock 1959-63 gearing) at 3,000 RPM in fourth gear. Instead of the 3,800 RPM @ 55 MPH we used to run and oil temp as high as 280F. Next engine with the higher gearing we got a heck of a lot better MPG, kept oil temp below 230F, and after 80,000 miles pulled that engine, it was running like new, but the flywheel end play got too much. Next engine with 1641cc SP and CW crankshaft we now have over 150,000 miles since last rebuild and getting 23 MPG.

As for the CIP "STOCK SIZE ALUMINUM PULLEY"... WHICH STOCK SIZE?? Could be stock size for early 40 HP, later 1200cc 40 HP, the 1500/1600 SP without DH, or the DH pulley each later pulley is bigger than the last Personally will only run stock DH crankshaft pulley. Those usually have a 3/8" tall "D" stamped in the rear face of it. They do not have the cracking problem of the aluminum ones and add a little weight to the crankshaft to help reduce vibrations of the engine.

If you really want hard numbers on how many more RPM the bigger crankshaft pulley gives you... Put a piece of tape on both the crankshaft and gen/alt pulley at the top. Then turn the engine by hand and count how many times the tape on each pulley goes around till both are at the top again. Borrow a DH pulley from a friend to install on your engine, and do same with the tape pieces. Then do the math on how each setup does how many fan RPM at 3,000 RPM at the crankshaft.
Do keep in mind that as the crankshaft pulley goes up in size, the same stock belt rides lower in the groove of the gen/alt pulley. so having the upper puller turned a bit smaller in this way also affects fan RPM.

Just have seen too many VW folks upgrade to the DH cooling system and then keep using an earlier smaller crankshaft pulley. Resulting in cooling problems. These old buses are heavier, can be loaded heavier, and have a bigger face to push thru the air than a beetle. So the buses have more cooling problems and shorter engine longevity all too often.

Matter of fact we even went with the 356 Porsche gen/alt pulley that is smaller than the stock VW pulley for even more fan RPM. That requires a smaller length than stock belt.

https://www.thesamba.com/vw/forum/viewtopic.php?t=174252&highlight=356+pulley

Also we modified the DH fan shroud for the 40% bigger type 4 oil cooler.

BTW plug up that hole in the rear of your fan shroud by the distributor. Should be a clip for the spark plug cables in that hole. That is losing cooling air.

You can buy a candy or meat thermometer from most any grocery store for checking your oil temp. Just get one with about 1" diameter face and at least 6" probe.

Even better, get a good set of oil temp and oil pressure gauges. Still good to have the above candy/meat thermometer to cross check your oil temp gauge readings.
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In Stereo, Where Available!

[nytagawa]

Thank you again for great info. I was looking the engine from the back of the bus. Forgot what is "Front"...

What is the right size pully? Is it 7" that I should look for or bigger?

What is "DH" cooling system? Sorry I am very new to VW, still learning.

Thank you for your help.

[Eric&Barb]

No worries, it just helps to cut down on the chaos that happens with directions gone awry.

7" outside diameter is the size of the DH (Dog House) pulley.

Do not be sorry, we all had to start from the same place you are now. Lots of VW folks back in the last century before the internet helped us out. A lot of those VW folks have gone on to the great VW junkyard in the sky. Plus we learned a lot about ACVWs the hard way. Now we are getting to be the old folks, with over 300,000 miles on just the 1960 walk thru panel camper conversion. Even then we are still learning new things about these ACVWs. So just passing it on...

Keep asking questions, but also do search & read up in the forums. Take a lot of trips thru the "Archives" & "Technical" buttons above, much good info to get to know thereabouts.

Do beware of a lot of junk being sold by various VW parts suppliers. Just because it looks pretty and described as so desirable, does not mean it will work well for you.
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In Stereo, Where Available!

[nytagawa]

This is the belt I have with 1/4" smaller crank pully. If I change to 7" crank pully, do I need to get the longer belt? What is the right belt for the normal 7" crank pully, can anyone give me the part number please?
Thank you very much.

[Eric&Barb]

Again.