Re: 1970 165hp Sterndrive Cooling Question
How Difficult Is It To Replace The Impeller?
not to bad.... yer gonna need a service manual though... ya need the same manual as starsnstripes... heres a thread about serive manuals...
http://forums.iboats.com/showthread.php?t=233677
i've replaced impellers while on the boat, and just recently, had the drive off and did the impeller. it is easier with the whole drive off. + ya get the chance to inspect other items like bellows, ujoint, gimble brgs and alignment + grease the drive shaft and ujoints....
Should The Thermostat Also Be Replaced?
The thermostat should be replaced after every overheat
why? other than yer gonna be there anyways removein impeller pieces and it's cheap insuance to R&R it..... ya can cook it in a pan whith a thermometer to see it work or not....
i'd be more worried about the rubber that got torched than the thermostat myself. the rubber being the impeller, the impeller housing, the guid tube, the waterpocket cover, impeller pieces washed thru the engine... yes, maybe gettin stuck in the t-stat, the riser to exhust pipe bellows and flapper.....
p.s. When you get the parts make sure you get the oil passage ring-seal between the upper and lower casings. Good luck
yes, don't forget the quad ring.....most important.... if ya get yer service manaul and follow it, ya won't forget.....
