GlenL

Looks like some good ol' internet engineering going on.

It's nice that the belts come off in all directions. To surmise this is for bearing wear and not because the accessories are in all directions is a big leap.

What you could do is some good ol' engineering math. What's the force on the bearings during WOT operation at 6000 RPM? I'm certain it's much, much more than what taut belts apply to the crank.

Cut the belt, remove the compressor. Let me recommend employing a sawzall to the Freon lines. The fittings can be hard frozen and no on wants them, anyways.

Speedtoys

Yup, good old internet....oh..wait..

https://rennlist.com/forums/928-foru...ompressor.html

This is why non AC cars from most if not all manuf, have an idler pulley to compensate for not having the compressor.

Wipe and drraaaaag that -dry- loaded #1 main on every start..not my circus, not my monkeys.

hacker-pschorr

Why doesn't somebody measure this? Anyone have an engine on a stand? Start tightening the alternator belt and see how much the crank moves and then measure how tight that belt is.

I would do it but frankly I don't care. My 79 has been running with only an alternator & PS since the late 80's and I start it every time with the clutch pedal to the floor.

Many hot rods only run an alternator, I'd like to think our lower end is more robust than a SBC or Ford.

Lizard928

So that means that you are no longer going to be installing a SC on your car? That belt has to be much tighter than any of the stock accessories on the car. And there is no countering belt pulling down on it..... So as you have in the past, and are planning on putting a SC on your car, they are most certainly your monkeys.....













So here are 5 different engines (of thousands to choose from) where the crankshafts are being pulled from a singular direction. I cannot find any reports of their #1 main bearing failing because of it.
Sure there is some wear that will occur at start up. That will occur on EVERY bearing. The weight of the crankshaft, connecting rods, pistons etc all pushing down on the bearings when the engine is not rotating.
What is it that you know, that the engineers at Ford, GM, Dodge, Land Rover, Honda, etc. do not know?

As stated before I ran one engine for 5+ years loads of track miles as well, with no aux on the passenger side of the engine (actually I was running only the Alt). When I pulled the engine and tore it down, the #1 main looked fine. There was no abnormal wear at all. Still waiting for evidence from you....... But again, if you are very concerned about this, do not put a SC on your own car. It exerts substantially more force on the crankshaft than any of the stock accessories ever will!