manifold,thermostat housing internal paint?

[sarantis]

Hello everybody
I opened the thermostat housing,the manifold and the riser of a GM305 1978 to check and clean them from rust.Apart from painting externally is it good to paint them internally?

 

[Haut Medoc]

Re: manifold,thermostat housing internal paint?

No.....
It won't last.....​

 

[Bondo]

Re: manifold,thermostat housing internal paint?

Ayuh,....

And when all that internal Paint falls off,... It'll be boogering everything up too......

 

[sarantis]

Re: manifold,thermostat housing internal paint?

Ok i see...
Can you also tell me if it's good idea since i can tell they are enough worn out but they only have some rust if it's a good idea to send them to the sand-throwing machine?I hope that internally this will clean manifolds,risers,housing good.Do you agree?
At last is it a good idea to adjust to the thermostat's housing a hose and force plenty of water into the engine to clean its cooling circuit?
Thanks in advance.

 

[sarantis]

Re: manifold,thermostat housing internal paint?

Sorry I wanted to say they are not enough worn out

 

[Bondo]

Re: manifold,thermostat housing internal paint?

Well,......

Removing the Rust Patina from the insides of the manifolds will, Really do you No Good,...
It'll Rerust in a Day......
I wouldn't waste the Time.+ Effort to Sand Blast them.....
I'd just knock whatever is Loose, Out,+ call it Good.....
And,.....
As far as flushing the rest of the System,+ Block,..... It Can't Hurt,....
But,... I don't know as it will do Awhole lot of Good either,......
Just pull the Drains,+ Anything else that'll allow the Crud to exit,+ Have at it.......