collapse

www.dimecitycycles.com

www.townmoto.com


www.restocycle.com

www.CITYLIMITMOTO.com

www.jadusmotorcycleparts.com

www.bisonmotorsports.com

www.speedmotoco.com

www.lostapostlejewelry.com

www.cognitomoto.com

www.sparckmoto.com

www.Moto-Madness.com

www.pistonsociety.com

www.steeltowngarage.com


Author Topic: barn find 1969 cb350 mild bob (in progress)  (Read 4207 times)

Offline wahvtec

  • Posts: 291
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #10 on: Jul 12, 2014, 18:14:03 »
I dont have a feeler gauge here at school.  It ran fine under throttle but as soon as i slowed for the light it took a lot of nursing to keep it going and once I was safely pulled over the white smoke came from the breather. I just took a look through the tappet covers and plug holes that nothing was blatantly damaged.  Hopefully I can get a hold of one
1969 CB350 (barn bike) (sold)
http://www.dotheton.com/forum/index.php?topic=59079.0ooo

1998 Yamaha Riva XC125.  Gotta scoot.

1982 xl185.  "In progress"

Offline WhyNot

  • DTT SUPPORTER
  • *
  • Posts: 1137
  • ~~~If it ain't raining, I'm riding~~{iii}?~~prost~
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #11 on: Jul 13, 2014, 09:42:12 »
Hey man.......nice little bike.....hope you get things straightened out.
2006 Harley Davidson Heritage Softail
1975 Honda CB750K5 needs carb work
1974 Honda CB350F2 needs tins painted (being lazy)
1972 Honda CB175K2 roller no engine
1972 Honda CB/CL350 Engines need roller
1972 Honda SL350K2 Frame for above engine
1972 Honda CB100K2 needs kicker shaft
1990 Mitsubishi MM needs engine rebuild
1984 Dodge D50 Beater DD since 1997

Offline wahvtec

  • Posts: 291
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #12 on: Jul 13, 2014, 11:07:36 »
Thanks!  It will get straightened out I hoped to make it through the season but the engine hasn't been opened other then the side covers.  Im going to start pulling the engine today, and see if I can pull the valve cover and inspect the cam bearings, and chain tensioner.  I'll post pics.  Kinda bummed it likely wont be ready for barber fest, oddly looking forward to opening up the engine.  I hope i don't get laughed off my scooter at barber and i will not be doing the ton on it.
1969 CB350 (barn bike) (sold)
http://www.dotheton.com/forum/index.php?topic=59079.0ooo

1998 Yamaha Riva XC125.  Gotta scoot.

1982 xl185.  "In progress"

Offline wahvtec

  • Posts: 291
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #13 on: Jul 14, 2014, 18:57:27 »
decide to pull the cam chain tensioner and snap a pic of the wheel.  Its bad, but not too bad.  I also checked the points timing and they seemed to get power at the right points.  The bike starts at first kick but sounds like crap.  I noticed i could get one turn on the crank with the plugs out easily and on the second it seemed much harder.  Everything rotates fine till around the point when the right side exhaust valve begins to open then it snaps open and back to easy turning.  Not sure what thats about but heres a pic of the tensioner.

1969 CB350 (barn bike) (sold)
http://www.dotheton.com/forum/index.php?topic=59079.0ooo

1998 Yamaha Riva XC125.  Gotta scoot.

1982 xl185.  "In progress"

Offline wahvtec

  • Posts: 291
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #14 on: Jul 15, 2014, 20:28:31 »
motor is out time to crack her open. 
1969 CB350 (barn bike) (sold)
http://www.dotheton.com/forum/index.php?topic=59079.0ooo

1998 Yamaha Riva XC125.  Gotta scoot.

1982 xl185.  "In progress"

Offline wahvtec

  • Posts: 291
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #15 on: Jul 15, 2014, 21:22:31 »
So it looks like my guess was right.  The right cylinders side of the cam seems to have not been getting as much oil as the left.  You can see a difference in the photo below.  Metal shavings were underneath the right side, but none under the left.  Im hoping maybe that right side cam bearing/tach housing is causing the binding.  It looks black in comparison to the points side.  My question is if oil is properly reaching the left side of the head, what would block it from the right?
1969 CB350 (barn bike) (sold)
http://www.dotheton.com/forum/index.php?topic=59079.0ooo

1998 Yamaha Riva XC125.  Gotta scoot.

1982 xl185.  "In progress"

Offline xb33bsa

  • Posts: 7726
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #16 on: Jul 15, 2014, 21:26:46 »
it could be an obstruction in the passage at the gasket for the came end housing?

Offline wahvtec

  • Posts: 291
Re: barn find 1969 cb350 mild bob (in progress)
« Reply #17 on: Jul 15, 2014, 21:33:49 »
Removing the engine was enough for tonight.  I'll work on the head after i read through the honda manual again on the procedure.  I'll need to make sure the cam and rockers are in spec.  Just odd to me that one side was dandy and the other was starved.  Hope too many parts arent destroyed.  THe spare piston locked engine may come in handy.
1969 CB350 (barn bike) (sold)
http://www.dotheton.com/forum/index.php?topic=59079.0ooo

1998 Yamaha Riva XC125.  Gotta scoot.

1982 xl185.  "In progress"