Second thoughts on changing AOS

[Smallblock454]

@ 911monty

There is a saying: never change a running system. When it fails you can fix it. Why will you fix it before it fails. I wouldn't do that, because it's not an easy fix and if it fails there won't be any big harm to the engine. Just relax and enjoy your car.

Regards, Markus

[911monty]

Originally Posted by Smallblock454

@ 911monty

There is a saying: never change a running system. When it fails you can fix it. Why will you fix it before it fails. I wouldn't do that, because it's not an easy fix and if it fails there won't be any big harm to the engine. Just relax and enjoy your car.

Regards, Markus

Thanks Marcus; This may be TMI but there was never a saying more true when it came to changing a perfect condenser while changing points in your distributor! Ahh the memories

However in this case I can only imagine my old brittle AOS diaphragm is being held together by the baked on oil fumes coating it! I would much rather change out in the comfort of home with plenty of micro brews than on the moon.

[Gilles]

Originally Posted by 911monty

I would much rather change out in the comfort of home with plenty of micro brews than on the moon.

+ 1

I am getting too old to perform heavy, unplanned emergency repairs on the side of the road…

[911monty]

Update; Changed AOS today. It was the previous version ending 03, so it was most likely changed at some point. This probably explains the crooked leaky clamp on the oil fill pipe connection. Also found the lower tube quick release connection broken on 1 side, I did change that o ring but may change the lower tube if it gives me a problem.

So this is definitely not a job I'd want to do on the side of the road. Originally tried on ramps, but removing rear tire made it doable albeit with a lot of up and down.

Idle was low and died 3 times on startup, revved on the 4th start and settled into normal idle. No Smoke! Drove about 40 mins and all seems well. :dance: