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Update … new Wiseco pistons +.030 , block bored and honed , transfer port bleed holes tapped 8-32 …installed 1/4 long stainless set screw with .040 drilled hole ( permanent loctite ) new needle pins for rods both ends and main bearing too . Acquired 6 merc piston ring compressors and...
Look … just found some water impeller debris under the exhaust water jacket cover …..previous owner didn’t change that out often enough …was the 2nd thing I did after getting this ol girl ….first was the compression test . The impeller was pooched by the way ….now I see where those little pcs...
The plan is bore and hone +.015 ….new pistons and rings , gaskets and crank seals …it’s a project for sure …no dispute there …it’s pretty much a total rebuild ….this old girl ran surprisingly well last summer…other than the idle…my labour is free as I don’t mind doing this ….it’s time spent...
Here is a pic of grooved crank and one of a reed block …I’ve a 1975 thru
1978 Mercury Fond Du Lake service manual coming in the mail … hoping it will also give some specs on those tolerances …
Chris 1956 … thank you …will definitely go through those procedures again after the rebuild ...
I’ve a 1973 850 Mercury that I purchased in 2021 for my 1973 Peterborough boat project . The floor and transom were rotten so I rebuilt with Coosa . The plan was to hang the 850 on her so out went the rotten wood and in came the Coosa . Transom , stringers and floor . That went well and is solid...
Hello ... I was wondering if someone here may be able to clarify the correct installation of the leather primer seals on a TD- 20 carb .When I dis- assembled per Lloyds instructions on the poch family site he refers to the smooth side of the seals face down . I'm not sure as the seals I took...
