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                        1965 Honda CP77 — Ulsan Metro City, Rep. Korea
                        Restored with original parts — Owner: J. Doe
                    Head gasket leaked on first run:(
I really hope that I don't have to pull the head off but I guess we'll see.  How tight did you go on the head nuts?  It seems that quite a few people have this issue and I'm wondering about how many people do as you did with some sort of sealant.  I will post my results after I torque to 22.  If that doesn't work I may try 25.
Jethro
			
			
									
									
						Jethro
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				Goodysnap
 - honda305.com Member
 - Posts: 456
 - Joined: Mon Oct 06, 2008 7:25 pm
 - Location: Lansing , Michigan
 
I had a leaker too after multiple  passes at 15 ftlbs. Let it set a couple days and retorqued again before install. To be honest I just snugged em with a wrench after a couple run cycles due to the lack of access with a socket on the inner nuts. I dare say I took em another full turn at least. But no more drips on the floor.
			
			
									
									64' CB77
65' CB160
						65' CB160
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				mike horvath
 - honda305.com Member
 - Posts: 212
 - Joined: Sat Apr 25, 2009 2:16 pm
 - Location: Central Utah
 
head leak
Jethro,
All good advice here. I went through the same thing as Goodysnap and the leaks stopped. I think I torqued to 18-19lbs, then with the slight leak after a good running, letter cool down and hit it with an open end the next day just a tad and voila!
			
			
									
									
						All good advice here. I went through the same thing as Goodysnap and the leaks stopped. I think I torqued to 18-19lbs, then with the slight leak after a good running, letter cool down and hit it with an open end the next day just a tad and voila!
Well I torqued to 22 then thought to myself I should just go to 25 to be safe.  So I put it all back together and ran it last night and it still leaked.  I could actually see a few tiny bubbles coming out along with the oil seepage.  So I'm pulling the engine and getting a new gasket.  I will put a light film of hylomar on the gasket surfaces so this will not happen again.  My question is where can I order an OEM head gasket from?
Jethro
			
			
									
									
						Jethro
Thanks for the advice everyone.  I really do appreciated it.  So I pulled my cylinder head off tonight and immediately noticed quite a bit of oil from the two outboard rear studs.  Does this sound normal?  I put the o-rings on the front outboard studs.  Should I have put them on the aft ones?   I thought the oil galleys were the two front outboard ones.  I'm confused.  Anyone care to explain and give some pointers?
Thanks, Jethro
			
			
									
									
						Thanks, Jethro
Jethro,
The o-rings go on the front studs, there are larger holes in the head gasket that they sit in. I like to put a thin film of Hondabond on those o-rings. If you have an 8x1.25 die, run it down the studs to clean up the threads, makes for a more even torque.
Davo
			
			
									
									The o-rings go on the front studs, there are larger holes in the head gasket that they sit in. I like to put a thin film of Hondabond on those o-rings. If you have an 8x1.25 die, run it down the studs to clean up the threads, makes for a more even torque.
Davo
davomoto
64 CB77
63-7 CB77 Cafe'
67 CL77
64 CL72
66 CL77 big bore flat tracker
Many others!
						64 CB77
63-7 CB77 Cafe'
67 CL77
64 CL72
66 CL77 big bore flat tracker
Many others!