Honda-SOHC
SOHC.co.uk Forums => CB750 => Topic started by: billy192 on October 03, 2013, 03:28:32 PM
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Well it is that time. the barrels have been re bored for the +0.75 new pistons. the Guy in Antig motors in Gloucester said that the tolerance was quite tight in the book. 0.00004 - 0.00016
(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/four_zpsc80df72b.png) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/four_zpsc80df72b.png.html)
so before I begin I have a few questions.
do i coat the head gasket with anything before assembly?
any tips to stop a dreaded oil leaks?
wish me luck
Billy
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The early 750,s leaked but slowly honda updated the design with extra rubber bits in the head , so if yours is the k6 then it should be the least likely to leak, however if you are using a head gasket from an aftermarket set then it might pay to give it an extremely light coating on both sides with blue hylomar, i have done this on several bikes including a 77 cb750 with great success, i must stress it has to be a very thin coat, preferably with the spray version, this is just my opinion maybee someone else will chime in
pete
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If it is a genuine honda gasket it has some sealant around critical areas and no need for any sealer, if using an aftermarket gasket, the best I would recommend is to use gaskasinch sealer it is very thin and an excellent sealer. Use it especially on the studs for cam holders as a number of the holes for these go to atmosphere and hot oil leaks past the threads.
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thanks Guys