maniold / riser issues

g-riehl87

Cadet
Joined
Jun 20, 2010
Messages
17
so on a plane and under a load my engine was overheating. All hoses, etc are good, water pump is good, no blockage. Took the manifold off, all clogged up with junk. Cleaned it, flow is good, replace or reuse?

Thanks
 

Fishermark

Vice Admiral
Joined
Oct 19, 2003
Messages
5,617
Re: maniold / riser issues

How did you clean it? Muratic acid? How does the area where the riser bolts on look? Is the metal there still thick, clean, and shiny? Or corroded and black looking?

If it was plugged with rust, etc, that used to be the metal inside the manifold. Yours is now much thinner inside. It is a gamble to run it. It is much wiser to replace it... but the choice is yours.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: maniold / riser issues

Took the manifold off, all clogged up with junk. Cleaned it, flow is good, replace or reuse?

Replace both the manifold and the riser, you can't even get close to all the places that can plug up. Since you only mention cleaning the manifold, look at the riser. They are usually worse, especially where the water exits the riser.
 
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