ok, so I lied about not doing anything. Got off my arse and did a few things tonight.
First order of business was inspecting belts and pullies, as I've been getting a chirping/squeaking sound up there. To make inspection easier, I decided to go ahead and pull the stock clutch-driven cooling fan (which I will go buy an electric to replace it with tomorrow). Been meaning to do that for a while.
Fan takes a 32mm open-ended wrench.
IDK where this came from, but I happened to see it in the back of a drawer in the tool box. Whadya know....32mm :)
with the fan and shroud removed, there's alot of room in there. My plan is to get a fan with an outside housing diameter of about 17", and bolt it to the stock shroud, which attaches nicely to the radiator. We'll see what I can find tomorrow at the junkyard or at the parts store.
This should gain me a couple horsepower by losing some parasitic drag on the engine anyhow....and a couple of horsepower means alot when you've got a wimpy M10~!
old fans.....heavy and sucky
upon removal, I immediately noticed something that might have caused squeaking or other issues: 2 of the 4 bolts that hold the water pump pulley onto its hub were missing. And the 2 were next to each other, so it was basically only bolted to the hub on one side. Had a couple M6's sitting around, and replaced...
Issue #2, I had noticed that the alternator belt was a bit loose. Looked to be adjusted as tight as possible, but when I took it off (to check the smoothness/action) I saw that the original "ladder" adjuster bar was stripped at the top. Brilliant.
Just so happens I had been WONDERING why the p/o had a brand-new adjuster bar in the big box 'o spare parts. He never got around to installing it. So I did. After all back together, the belt deflects less and the alternator sits more solid. Excellent.
old and new
car does have a virtually new alternator, so that's a plus
next order of business may be to do the water pump. It seems to be working fine and doesn't make any noise, but it looks pretty old. Project for later this spring I think, or maybe sooner. ALl the coolant hoses are pretty mushy and old-looking, so I think I'll replace them soon as well.