Thread: Crank out of phase?
04-19-2009, 10:08 AM #1
Crank out of phase?
Here's the deal: Yesterday, I looked in the engine compartment after about a 2 hour ride. The outer crank seal blew out, and there was oil, and metal shavings splattered everywhere. The metal shavings were from the aluminum outer seal casing "hula hooping" on the crankshaft.
I am not sure if this is the problem, but it is very possible that the crank is out of phase. The reason I am thinking of this is because when I got the ski, (56 hrs.) the front piston was siezed in the bore. I forced the engine to turn by the driveshaft, using a BIG adjustable wrench, and my foot to kick the hell out of it.
Fast forward to about 118 hours. Does anyone remember the rear piston I fragged? 40, or so hours earlier I discovered a ground electrode completely broken off on the rear cylinder. A few hours later, that same cylinder somehow forced the gap closed.
Now, with my new top end, I had detonation that I couldn't figure out. I am guessing this was amplified by the high compression head.
Is there any "Harry Homeowner" way to check my crank to see if it is out of phase? I am definitely going to get a T&W service done on it. Now to figure out by who. Peferably someone on the East Coast.
It took me about 2 hours to remove the engine, and COMPLETELY disassemble it yesterday.
04-19-2009, 10:35 AM #2
You need an indicator that threads into the spark plug hole and a degree wheel. I attached a poor mans degree wheel
04-19-2009, 12:36 PM #3
Bill, I was hoping you would reply to this... Is there no external measurement I can do? Like with a straight edge? I would have to completely reassemble the engine to do it this way.
That degree wheel is fracking cool!
04-19-2009, 12:42 PM #4
If the crank is out of the ski I do not know how I would do it. Maybe an automotive machine shop could check it for you.
04-19-2009, 12:45 PM #5
That is very possible. There is a shop in the next county over, and I will call them tomorrow.
I just checked the Riva site for a price on T&W service. Not bad at all. It came up to $60 in the shoping cart.
04-19-2009, 12:59 PM #6
T&W does not include phase checking, that is a different thing all together.
04-19-2009, 01:01 PM #7
You mean to tell me they would weld it in place without even checking it? That is just plain ignorant....
04-19-2009, 01:24 PM #8
Nope I mean to tell you phase checking is not something that is not done unless asked for, and it is an additional charge. Check the sticky on how to T&W a crank, it has nothing to do with phase at all. http://www.greenhulk.net/forums/showthread.php?t=38109
04-19-2009, 01:28 PM #9
I just looked for a sticky on it, and can't find it....
04-19-2009, 01:28 PM #10
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