Stuck 1970 Mercruiser 165 inline 6

[chiefalen]

Re: Stuck 1970 Mercruiser 165 inline 6

In the exhaust pipe after the riser about 12" down maybe never had one.

 

[ziggy]

Re: Stuck 1970 Mercruiser 165 inline 6

yer gonna like having the service manual... best tool in your toolbox....
here's where your flapper goes... the pic is looking down the exhaust pipe with the bellows between the riser and exhaust pipe removed....

there's a flat bar (w/rubber flapper attached to it) that goes between the two brackets in the pic...
w/o rereading 'the' book. i believe you need to drill off the rivets to get the bracket off to replace the flapper bar into the bracket....
fyi. i'm a pretty much by the book guy. so i don't recommend what i'm about to say... however. in lew of drilling off the rivets, i bent the bar on the new flapper till i could get it into the slots of the brackets. then straightened the bar back out while in place in the brackets... use your own judgment.... my suggestion is to do it by the book.... once in a while though... ya can be a little inventive....

 

[starsnstripers]

Re: Stuck 1970 Mercruiser 165 inline 6

My mistake i missed the part where ya got the motor out and it's free. good news. Tough motors Mine treats me right. And yes thats the trim sender you described on the inner transom.

 

[curliss]

Re: Stuck 1970 Mercruiser 165 inline 6

Update on the SS 204 MC 165. I removed the head and found the head/block/pistons all looked very good - head and block were dead flat. Previous work had obviously been done on the motor as there was no gasket to the thermostat housing (explains the rust stains down the front of the motor), and there was no thread seal on the head bolts - so they were well rusted, but I lucked into gettng them out without shearing any off. The saga continues...