With an engine recirc pump, the holes shouldn't be needed.

I would put 140 stat in and check sea water pump. Pumps have a habit of going for a **** after sitting all winter!!!! good luck Jeff

Did you fix the problem? If so, what was the issue.

I replaced the 140 thermostat with another 140 thermostat....
back flushed the oil cooler. cloudy water came out but no chunks


ran the next day to 4000 rpm. ( with the family)
port 155 deg, starbaor 160. I think I am jsut fine
just was not sure where these settle to....

I think they are ok

Ramb

Ramb, Iam having the same problems. Replaced both imple. and thermostat's. However my port motor is at 160-165 and star. is at 150. Any input would be helpful. thanks again Scott

Griff ???????????????????

scott

we could swape the gages, and/or senders to see if it is the sendors or the actual water temp that is different

but I am less worridd myself now seeing only a 5 degree difference

Ramb

on injected motors with a typical recirc water pump, with a standard tstat ( no holes or other voodoo) the water temps should be above 160 or you are telling the injection to be over rich... not smart.

not smart on carb motors either but not essential like it is with injection. a good injected , normally aspirated motor will run for 200 years at 170 deg... where it should be anyway.

great info

thanks

I am closing my concern with this

N/A motors yes, however we are talking about small (177) blower motors.