makin progress, but why does this always happen . 78 550cb

jeepurz

Im replacing leaky orings on this topend, figured Id forget oil jet orings, so I left them inplace through entire stripping and cleaning, covering them with tape leaving the old Orings as a reminder, paint done today, im blowing off motor with air Id just removed rags from under pistons to keep any krud out and Ill be a SOB if the Oring didnt fly up in the air and straight into the crankcase! SOOO tommorrow Im gonna wrig a small fuel line type hose to the shop vac and try to suck it out. Unless someone has a rubber magnet. ARGGHH.

that said what am i looking foward to on setting this crank, the cam n separate sprocket make it look tricky to me. Ive read up on this with the availble google info but its sketchy.

jayel · Posted: Sat Apr 04, 2009 8:19 pm Post subject:

turn it upside down and shake it baby, shake it Razz

dorT500 · Posted: Sat Apr 04, 2009 8:30 pm Post subject:

Price:
$795.00
$695.00

Available Qty: 1
SNAKE HEAD COLOR CAMERA II
The Fiber Optic Flex Hidden Color Camera is the industry standard for applications in which compact size and flexibility are essential. The Fiber Optic Flex Camera is contained in a fiber cone with a diameter of .42, 420 lines of resolution, and is a revolutionary addition to the surveillance industry.

and tie a piece of gum on the end of it.......Sorry that happened...Welcome to my world. foot

05c50 · Posted: Sun Apr 05, 2009 6:16 am Post subject:

Too bad about your o ring. You and I have a lot in common when it comes to bad luck. Mad

I always figure, if it can happen, it will happen to ME!
I don't think you will have much problem timing the engine. Leave the valve adjusters loose to take some pressure off the cam and it should line right up.

...............Paul

H2Lou · Posted: Sun Apr 05, 2009 7:33 am Post subject:

Sucks about the oring Shocked

On the topic of leaks…I used to fix up a lot of early 80’s 650 Hondas and Yamaha’s for friends.
A very common problem they had were leaky heads…I found that on many bikes they never cleaned the bottom of the threaded hole in production…if you get a small mag light to look down in you can see aluminum thread chips in the hole…take a small pic and air hose and clean all threaded holes out before rebuilding.
If you don’t what can happen, you put the bolt in torque it down and it still leaks…the bolt is bottoming on the tread chips, not the head.
While you have it apart it is worth looking at each hole just to make sure.
Lou

jeepurz · Posted: Sun Apr 05, 2009 11:45 am Post subject:

HA got it. hehe, feel better now!!

dorT500 · Posted: Sun Apr 05, 2009 11:53 am Post subject:

You da Man!

05c50 · Posted: Sun Apr 05, 2009 12:41 pm Post subject:

Duct tape

and an inventive mind can do anything.

.........Paul

cloudsparrow · Posted: Sun Apr 05, 2009 5:22 pm Post subject:

Ha ha ha ha. Comic relief (for us) AND a positive outcome (for you)!

jeepurz · Posted: Sun Apr 05, 2009 6:52 pm Post subject:

one more question , the book doesnt quit show for sure but It looks as though top end is removed with the motor in the frame, if so is it easier to put her in now or go ahead with get her done then install?

05c50 · Posted: Sun Apr 05, 2009 7:01 pm Post subject:

Either way is OK. The engine will be lighter and easier to handle without the top end on, but I like to assemble the engine completely out of the frame. It makes it easier to see my mistakes. Laughing

...........Paul

jeepurz · Posted: Sun Apr 05, 2009 7:35 pm Post subject:

Barchetta · Posted: Sun Apr 05, 2009 9:15 pm Post subject:

I had to say that I really liked the "a small fuel line type hose to the shop vac and try to suck it out." idea. I'll keep that little trick in my magic tool box. Thanks. Wink

jeepurz · Posted: Tue Apr 07, 2009 4:48 pm Post subject:

next issue, wrong rings, wrong size, I dont even remember when or where i got thats how long ive had em, plan was to hone re ring, I cant re-use the existing rings after hone correct?
The enclosed screenshot, shows first and second colum for rings, which set would be needed. (whats the differance) thanks jeep. why did I think theyd be more expensive, this is a complete set right??

05c50 · Posted: Tue Apr 07, 2009 7:12 pm Post subject:

Jeep, the 374-004 are superceded by the 374-000. You'll need 4 sets of 374-000 if the cylinders are not scored or rusted. A simple hone job to break the glaze and stick it together.
By the way, don't tell anyone (I'll probably get flamed for this) but I re-used my rings on my 750a after I honed the cylinders.

...........Paul