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my blue 67 dream engine restoration/rebuild!

Want to keep a Restoration Log? Post it here! You can include photos. Suggested format: One Restoration per Thread; then keep adding your updates to the same thread...
greg78gs750
honda305.com Member
Posts: 73
Joined: Tue Apr 21, 2009 5:14 pm
Location: muskegon, mi

my blue 67 dream engine restoration/rebuild!

Post by greg78gs750 » Wed Feb 03, 2010 3:48 pm

hello all!

this is to be a log of my rebuild of a 67 305 dream engine.

the back story:

i have had my 1978 suzuki gs 750 for about 8 years now, and i love it. great, reliable bike. a little TOO reliable....last year i found myself in search of a project. the wife and i had taken a msf course together, i told her it would make her a better passenger....my ulterior motive was this: teach her to ride, get her hooked, she will no longer be content to ride backseat, so, of course, a 2nd bike will have to be procured! the plan worked perfectly, we were shopping around for a bike, when she went and got herself pregnant. the bike went to the back burner, my search turned from looking for a reliable runner into looking for more of a project.

i had just about given up looking for a while, everything i looked at needed either too much work or cost too much money. then, on our way home from looking at yet another pos 30 year old bike, she got a call from her friend who mentioned in passing that her dad was trying to sell his bike, might we be interested? well, the wife had seen this bike before and TOTALLY FALLEN IN LOVE WITH IT, telling me that if it was ever for sale, we would buy it. and here it was!

so, a parting of cash later, it was ours. i rode it around a bit, shaking her out making sure everything was as it should be. well, in the process of going thru things, (cleaning carb, adjusting valves, cleanup, etc) i discovered the l cylinder not firing correctly. a compression test verified low (like 30 psi cold!) numbers. so, the dream got parked for a while to give me time to finish up some other projects.

well, 2 days ago, i started to dive in! the engine now resides in my basement.

the plan is to disassemble and restore the engine this spring, in the hopes to get the dream back on the road for the summer riding season.

i have been this far into an engine before, and i am sure i will have lots of stupid questions. i do have the bill silver manuals, as well as a clymer manual.

where it stands so far:

the top end is apart. 2 broken rings in the left cylinder! that might explain the low compression, eh?! the cylinder walls dont look majorly damaged, so that much is good.

a few initial questions:

gasket sets. go with the nos kits on ebay or an aftermarket kit? i know with my suzuki there have been some quality issues with non-oem stuff.....any opinions?

measuring the cylinder bores.....use one of those little expandable rod thingys (bore gauge?) then use a mic to measure that? pretty sure that is how you do it, but, like i said, ive never done this before.....bear with me. any good tutorials out there on how to do this kind of work?

ok, enough boring stuff for now. i will load some photos when i figure out how to do it!

greg

68Cb77
honda305.com Member
Posts: 204
Joined: Sun Nov 25, 2007 2:12 pm
Location: Toronto, Ontario, Canada

Post by 68Cb77 » Wed Feb 03, 2010 6:17 pm

I think after market gaskets are ok, but the general consensus is don't scrimp on the head gasket...Ohio cycle has original head gaskets. Got mine there.
67 Honda CB77 Superhawk
82 Honda XR200R
70 Honda CB750 K0

busaken
honda305.com Member
Posts: 78
Joined: Fri Dec 25, 2009 6:54 pm
Location: battle creek,mi.

Post by busaken » Wed Feb 03, 2010 10:37 pm

greg.. i too live in michigan and have rebuilt a 305 engine out of my 63 honda dream. pm me and ill try to answer any questions etc. i have a topic on my dream restortation under the name of busaken

greg78gs750
honda305.com Member
Posts: 73
Joined: Tue Apr 21, 2009 5:14 pm
Location: muskegon, mi

photos

Post by greg78gs750 » Sat Feb 06, 2010 10:41 am

ok, i'm gonna try to get some photos on here....
what we are starting with....
Image

my helper monkey.....
Image

a 43 year old transmission....
Image

greg78gs750
honda305.com Member
Posts: 73
Joined: Tue Apr 21, 2009 5:14 pm
Location: muskegon, mi

Post by greg78gs750 » Sat Feb 06, 2010 10:47 am

now, a question i posted in the trans. section...before parking, the kickstart would slip with a clunck every 5th kick or so. the pawl looks ok to me, though i will replace it anyway....but do the teeth inside the 1st gear look ok? they seem a little uneven to me, making me wonder if that could have been causing the slip....take a look...
Image

and the pawl, too...
Image

i know this is a bit of a double post, but i want to get parts ordered and get this baby back together.
thanks! greg

Mike Mullins
honda305.com Member
Posts: 247
Joined: Thu Aug 02, 2007 9:24 pm
Location: Demotte IN

Post by Mike Mullins » Sat Feb 06, 2010 10:52 am

Your mechanic looks to be a very capable fellow ! ( I used to have one like that, but now I fix HIS bike !)
Mikeyrx
"a free motorcycle is a bottomless hole intended solely for money"
66 CB 77
76 BMW R75/6
99 GL 1500 trike
75 & 79 XS 650's

Mike Mullins
honda305.com Member
Posts: 247
Joined: Thu Aug 02, 2007 9:24 pm
Location: Demotte IN

Post by Mike Mullins » Sat Feb 06, 2010 10:52 am

Your mechanic looks to be a very capable fellow ! ( I used to have one like that, but now I fix HIS bike !)
Mikeyrx
"a free motorcycle is a bottomless hole intended solely for money"
66 CB 77
76 BMW R75/6
99 GL 1500 trike
75 & 79 XS 650's

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