Thermostat Replacement 350 V8

[Fordiesel69]

This thread shows what my housing looks like:
http://forums.iboats.com/omc-i-o-in...ermostat-removal-replacement-help-548946.html

I am confused, the oring is rock hard if it is even an oring. I spend about an hour picking at it to no avail. But lets say I torch the oring out and pull the stat out of the housing, when I reinstall the new stat, what will hold it up in there? An oring alone can;t by itself keep that up there can it?

 

[HT32BSX115]

Re: Thermostat Replacement 350 V8

Howdy,


T-stat housings in a raw water cooled engine are a LOT like manifolds and risers (cast iron and they get rusty) . When they get too rusty to use, and you cannot resurface and continue to use the internal t-stat mount point.....you must replace it.

But lets say I torch the oring out and pull the stat out of the housing, when I reinstall the new stat, what will hold it up in there? An oring alone can;t by itself keep that up there can it?

If it doesn't you'll need a new one. Luckily, you can still buy them.

OMC # 0985880

I found a few online for about $90 or you can go to EBAY and get a used one for about $40 (but it might be just as rusty as yours!)


Regards,


Rick

 

[Don S]

Re: Thermostat Replacement 350 V8

Yes, it's an oring.
Yes, it will keep the thermostat in place.
Yes, the oring will get hard and brittle after years of use.