Outboard top cylinder getting hot

[Dawnraider10]

Can anyone recommend a workshop Manuel I can buy that will have how to strip and rebuild engine ectect

 

[racerone]

A factory manual is best.----Some other manuals belong in the wee house with the 1/4 moon in the door.

 

[Dawnraider10]

Trying to work out what caused this cylinder to over heat and damaged the piston. Can a carb cause a cylinder to over heat ? Maybe running too lean , can the carbs be adjusted just a thought I just want to rule out any other causes

 

[jimmbo]

Too lean a mixture can cause heating/lack of lubrication, since your motor has a carb for each Cylinder, a Lean condition might not be noticed until Damage has been done.
To name a few, but not all
Improper Float setting.
Restricted Fuel Supply to the carb involved.
Restricted/plugged Orifices/Passages in the Carb.
Gaskets and/or O-rings in Carb not sealing properly.
Leaks in the Gaskets/Seals on the Crankcase, including Crankshaft Seals
Improper Timing can also lead to piston damage

 

[ct1762@gmail.com]

A 1983 head will be warped.----They all are warped after 20 years , so a 40 year old head needs resurfacing.

if its within the allowed .004'' max warpage, have you had a head leak? not saying go to the ragged edge, just curious. I ignore the people telling me not to add sealer, and do it anyway even after resurfacing.

 

[jimmbo]

If you add gorilla snot to the gasket, just do so sparingly so as not to block a Water Passage in the Gasket, like the Old Man did, resulting in the "Hot " Light coming on all the time that year

 

[ct1762@gmail.com]

If you add gorilla snot to the gasket, just do so sparingly so as not to block a Water Passage in the Gasket, like the Old Man did, resulting in the "Hot " Light coming on all the time that year

haha that doesn't sound good! No i just do a very light coat , and usually just on the firing/sealing ring surfaces of head and block. im in saltwater, so any tiny leak on the outside quickly gets fixed with "natures gasket"