Author Topic: Rookie Question...Need help separating head from cylinder  (Read 3040 times)

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Offline justinmcgiver

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Rookie Question...Need help separating head from cylinder
« on: November 13, 2006, 12:58:02 PM »
As I am new to this board and to 4 cylinder engines, I appologize if this too remedial of a question. I am having trouble separating the head from the cylinder without causing damage and was wondering if any of you have a nifty trick for this.

Thanks,
Justin
'74 CB750 K4 - Lake Placid, New York USA

Offline kghost

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Re: Rookie Question...Need help separating head from cylinder
« Reply #1 on: November 13, 2006, 01:12:14 PM »
Make sure you removed ALL the bolts. there are some buried in the head and a small bolt on the backside.

Some tapping once your sure all the bolts are removed with a block of wood twix the hammer and the head.
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Offline Jonesy

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Re: Rookie Question...Need help separating head from cylinder
« Reply #2 on: November 13, 2006, 01:16:37 PM »
If you look very carefully at the sides of the cylinder, there are two small slots (one on each end) that Honda put in these joints so you can insert a small screwdriver or other suitable prying tool between the pieces to help get them apart without gouging any delicate gasket mating surfaces.

As kghost said, make sure all the nut stud nuts and the small retaining bolts are removed before any kind of "encouragement" is used.
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Offline justinmcgiver

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Re: Rookie Question...Need help separating head from cylinder
« Reply #3 on: November 13, 2006, 01:35:14 PM »
Got all the bolts...Will look for the slots tonight...Thanks!
'74 CB750 K4 - Lake Placid, New York USA

Offline Jonesy

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Re: Rookie Question...Need help separating head from cylinder
« Reply #4 on: November 13, 2006, 04:08:24 PM »
This pic might help. You can sorta see the slot between the cylinder and the case (bottom circle):
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen

Offline Tim.

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Re: Rookie Question...Need help separating head from cylinder
« Reply #5 on: November 13, 2006, 04:37:10 PM »
What model bike by the way?   Do you have your parts and/or service manuals?  I wouldn't be taking anything apart without them unless you've got a photographic memory and perfect recall  ;)
Roule comme dans les annĂ©es 70...   Roll as in the Seventies...

Offline aptech77

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Re: Rookie Question...Need help separating head from cylinder
« Reply #6 on: November 13, 2006, 06:31:37 PM »
BFH......sorry.... :-\

Offline vorhese

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Re: Rookie Question...Need help separating head from cylinder
« Reply #7 on: November 09, 2009, 09:27:22 PM »
Oh thank you thank you!
Ive been spending 2 days heating and pounding the head. I went and found these 2 prying spots you mentioned and they cam apart in half a second.
PHEW!

This pic might help. You can sorta see the slot between the cylinder and the case (bottom circle):