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  #26   IP:
Old 10-30-2020, 05:58 PM
tenders tenders is offline
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Originally Posted by Peter View Post
PS - sort of like when I loaned my car to someone and half-way through explaining that the hockey stick through the hole in the floor is the brakes, I realized that maybe there IS something wrong with the car that should get fixed and that hockey stick brakes, while they were normal for me, are in fact not normal.
Wow, that is VERY Canadian.
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Peter (10-30-2020)
  #27   IP:
Old 10-30-2020, 08:49 PM
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Old 10-31-2020, 10:24 PM
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Hi again

Today was sunny and we ended up going on a last minute cruise. I ran the engine for an hour, all running perfectly. My partner allowed me 20 minutes after to play with the engine while the kid slept.

So I decided to test some of my assumptions.

After running the engine for an hour on our cruise I poured a little antifreeze in cylinder 3 and a little engine oil in cylinder 4 after. The antifreeze did not boil as I had assumed, but it did not mix with the fluid on the surface of the piston. The oil mixed straight in.

This test lead me to believe the engine simple doesn't produce the heat to burn the motor oil. So I ran the engine at WOT for 30 seconds which produced the heat to brown the oil on the surface (i think).

Of interest, cylinder 3's spark plug and exhaust valve had been 'cleaned' by the antifreeze. cylinder 4's spark plug is still charcoal black.
I also tested antifreeze in C4 but dont have a good photo, it didnt mix same as cylinder 3.

I now think what I took a picture of in C4 a week ago was a piston cleaned by seafoam, which received the lions share due to gravitiy. Then covered in oil from the compression test.
That or it came in with the fuel with c4 getting the lions share due to gravity again.

My learning from these experiment is its not as hot inside the cylinder as I had originally assumed.
I also set up a antifreeze evaporation test.

Yes, Ill still be performing the pressure test sometime in the next month but thought maybe someone finds this as interesting as I do.
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Last edited by cowlum; 10-31-2020 at 10:38 PM.
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