Not as bad as I thought. It is worse....
Posted July 26, 2002 - 10:34 AM
1. Pull the tank/seat and take a look at the spark plug.
FIRST PROBLEM: Spark plug grounding rod has been struck, and it was touching the electrode. Changed to a different plug, and it is sparking! No electrical problems as first thought.
2. Drained oil to see if there was any foreign debris, and nothing came out of the frame drain hole. Opened up the engine drain, and a little more than a quart came out of that.
3. Put a new plug in, added oil, and kicked it over (with decomp pulled in). Nothing was hitting or sounding strange, so we put the gas tank back on and tried to fire it up. Would not fire, and I realized that I am able to defeat the engine, by hand, without the decomp lever being pulled in. Not easily, mind you, but if could put all of my weight on the kickstater, and I could get the engine to turn over.
So, what caused the grounding rod to get bent? Why was it so low on oil? Is this that phantom loss of compression, and it will come back, or, do I have a hole in the piston?
Well, on a good note, I don't need to figure out how to run a multi-meter.
Sounds to me like I have to take the valve cover off and take a look-see.
Anybody have some clues?
Posted July 26, 2002 - 12:45 PM
Anybody else had this happen? Sounds like I need to pull off the head and assess the damage.
Can you bore a 400 and stuff a 426 piston in, or are they the same bore with a different stroke?
Not happy and the wallet is going to feel this.
Posted July 26, 2002 - 05:07 PM
Posted July 26, 2002 - 06:47 PM
Posted July 27, 2002 - 02:14 AM
Posted July 27, 2002 - 10:12 AM
Posted July 28, 2002 - 01:28 AM
Posted July 28, 2002 - 02:54 PM
Originally posted by chabon99:
Your options are: buy a stock cylinder (too expensive) buy a 420 kit from Stroker (which is what mine was and from what I've found out-this happens all too often)$400 with trade in of your cylinder, or re-sleeve your cylinder and use a wiseco piston. LA Sleeve quoted me $330 for the re-sleeve, piston and gasket set yesterday.
List price for the cylinder from Yamaha is under $300 bucks, I paid $245. I bought a new 426 cylinder and weisco 12.5 to 1 piston for the 426 cylinder cheaper than any other alternative I could come up with. I had to replace the con rod anyway, and decided on the 426 stuff after a conversation (e-mail) with BK. The expensive part is the head, just pray that is okay.
Posted July 29, 2002 - 06:17 PM
Posted July 30, 2002 - 12:17 AM