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Post by summit1966 on Aug 3, 2016 7:38:52 GMT -5
Are they bleeding screws on top of the heads?
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Post by Gene on Aug 3, 2016 7:58:55 GMT -5
Are they bleeding screws on top of the heads? No , they're on top of each plastic water neck .
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Post by Gene on Aug 3, 2016 8:07:02 GMT -5
I think I found your pics on the other forum but I can't open them. I probably deleted them from there . No problem . Going to change the oil & filter after Saturdays ride . Put the filter in a plastic bag & separate whatever particles I can from the oil so Justin has a foundation to work on.
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Post by Gene on Aug 3, 2016 8:13:57 GMT -5
Also that info in the manual about bleeding is incomplete. You have to fill the system with both bleeders cracked , then start the bike . As soon as the thermostat opens close the front bleeder & increase RPMs so the air bubble in the hose between the heads can be forced toward & out the rear bleeder.
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Post by summit1966 on Aug 3, 2016 17:32:41 GMT -5
This is the response from the rebuilder: I’m confident the marks aren't from heat and its not an issue. The water jackets in the cylinder are symmetrical from front to rear so if there was a cooling issue it would present on the exhaust side first. If there was a heat related issue due to a water pump problem it would boil over quite quickly and be bubbling from the radiator before any damage was caused.
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Post by Gene on Aug 3, 2016 17:56:33 GMT -5
This is the response from the rebuilder: I’m confident the marks aren't from heat and its not an issue. The water jackets in the cylinder are symmetrical from front to rear so if there was a cooling issue it would present on the exhaust side first. If there was a heat related issue due to a water pump problem it would boil over quite quickly and be bubbling from the radiator before any damage was caused. I priced those thermometers & am going to pick one up Sunday . His idea of them being symmetrical makes sense . My guy said : In stock form , if these engines are correctly maintained & not abused ( intentionally or accidentally ) they should run 10,000 miles & beyond with no piston scuffing . I know the story about my bike : it was sunk while running . That was the cause of the initial slap . Whether or not my pistons are at fault right now remains to be seen . He seems to think one of my rod bearings are going which could be a product of the PO sinking the bike . I did not check these before assembly . My gut tells me that your situation was due to incorrect tolerances . Just my opinion & we'll see how it turns out .
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Post by summit1966 on Aug 3, 2016 22:50:23 GMT -5
I still say there is a lubrication issue on that side of the piston.
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Post by Gene on Aug 4, 2016 5:47:06 GMT -5
This may be true ^ . I also spoke to a long time friend & engine builder yesterday & he condemns me for using full synthetic in the bike . He claims conventional oil "sticks" better.
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Post by summit1966 on Aug 4, 2016 16:46:49 GMT -5
That's good to know. Have you spoken to the rebuilder about that common dry spot on these motors?
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Post by Gene on Aug 4, 2016 17:05:23 GMT -5
That's good to know. Have you spoken to the rebuilder about that common dry spot on these motors? That was just my longtime friend & bike builder's opinion about the oil . As far as talking to Justin about the dry spot , no i haven't yet . The original problem was my bike was sunk while running . That will cause scuffing like that . I cannot confirm my current issue is a re occurrence of the piston slap . It sounds like it but it's in a different spot . I'm borrowing my boss's no touch thermometer over the weekend just for kicks .
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Post by summit1966 on Aug 4, 2016 18:56:47 GMT -5
How do you know your bike was sunk? Did you have scoring on your rear cylinder? Let me know how you go when you do the testing with the thermometer.
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Post by summit1966 on Aug 5, 2016 3:28:09 GMT -5
I don't think mine was a clearance issue, there would have been marks on the other side of the cylinder.
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Post by Gene on Aug 5, 2016 5:44:32 GMT -5
I don't think mine was a clearance issue, there would have been marks on the other side of the cylinder. Didn't you post a pic of your piston with all the ceramic chewed off a while ago ?
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Post by summit1966 on Aug 5, 2016 5:56:22 GMT -5
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Post by Gene on Aug 5, 2016 6:15:19 GMT -5
That's a cool link ! Always wondered about a chamfer on the skirt tang.
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