'81 60hp sand in t-stat

[tdp63]

j60tlcih - Belongs to a mate. Took it out first time and hot temp alarm sounded. Packed up and on the way home called into a boat shop. Was told Johnsons are reknown for dodgy temp sensors. Wanted AU$105 for a new one. Got a second opinion and was advised to remove and check t-stat and relief valve. Removed cover and found alot of fine sand in and around everything. What's the best next move? Thanks guys

 

[Scaaty]

Re: '81 60hp sand in t-stat

New Impeller! Sand will shred them real quick....

 

[tdp63]

Re: '81 60hp sand in t-stat

it was suggested that the pressure relief valve may have been sticking and it should be removed. is there any harm in running motor without this part?

 

[Scaaty]

Re: '81 60hp sand in t-stat

Won't hurt...do it.

 

[andy6374]

Re: '81 60hp sand in t-stat

Without out the poppet and spring, won't the block overheat at idle due to inadequate water pressure and flow, ie the block will never fill up.