O'RING PLACEMENT DURING HEAD INSTALL

twinegar · Post by **twinegar** » Fri Nov 09, 2007 11:43 am

I received the gasket set. Is there a diagram someplace showing placement of the various o rings when installing the head and cylinders? I have the Honda shop manual but it doesn't show or say much about it.
Thanks.

EMS · Post by **EMS** » Fri Nov 09, 2007 11:51 am

The only place I can think of, is a parts manual or the picture on the parts fiche. If you don't have one, I can make a copy and fax/e-mail it to you.
Check the one on the site here (home page) browse around a little. Example

http://home.foni.net/~bally/cbx/e6.htm

twinegar · Post by **twinegar** » Fri Nov 09, 2007 12:08 pm

The link shows the same diagrams that the fiche shows without o'ring locations. A scan showing placement is all I need, thanks. twinegar@swbell.net

The parts manuals being sold at Ebay on CD by inthustix are crap by the way. I bought one and almost everything is poorly scanned from poor quality reprints and the scans of the parts manual is worthless with the text being unreadable. I guess for $13.00 I got about what I paid for..........junk!

bobber · Post by **bobber** » Fri Nov 09, 2007 3:41 pm

There aren't many o-rings. Only ones I can think of would be the 6 for between cylinder liners and cylinder plus couple small ones for tach drive.
Cylinder o-rings slide over the liners from the bottom and fit into a little recess, anti-vibration I think. Oil lines are copper washers, cam tensioners copper washers along with a sealing plug.

alimey4u2 · Post by **alimey4u2** » Fri Nov 09, 2007 4:08 pm

bobber wrote:Cylinder o-rings slide over the liners from the bottom and fit into a little recess, anti-vibration I think.

I struggled with that one too bobber. I came up with the idea that it was to prevent ingress of oil in between the steel cylinder liners & the alloy finned block. My reasoning is that they have different expansion rates upon heating & cooling, possibly allowing the oil to wick ? Once in place the oil isolates the two metals, making heat transfer less efficient... As I said, just a guess & your idea may well be right.....

bobber · Post by **bobber** » Fri Nov 09, 2007 6:58 pm

Alimey4u2 your reasoning sounds better. Liners pressed in so possible to get oil in and allow to loosen/rotate due to different materials between liner and cyl block ityself.
I was basing on diesel engines I've seen with o-rings to isolate liner from block when combustion(shock waves) occur but the CBX would never see that kinda of stress.... at least not for long or with my legs wrapped around it!