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Old 01-03-2019, 08:43 PM   #16
self_moto
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Originally Posted by afm199 View Post
Based on the pics it will be a miracle if the cylinder wall is ok. That valve head bounced around in it long enough to hole the piston. Also, the cylinder is almost certainly Nikasil, which means sending the block out and paying $600 to have it fixed and relined. Nobody uses cast iron liners anymore. And, as mentioned, there's pflug in the cases that went everywhere. I have torn down a couple of those. It's toast. Forget it.

Have you ever rebuilt a motorcycle motor? It's not exactly like a lawnmower.
Thanks for info(now YouTube suggests videos about Nikasil . )!

Added cylinder pics, there is a minor damage but I believe you can replace that sleeve only.

I look at this engine as a project and opportunity to learn how to rebuild one, Iíve swapped engine on bike last year(10k since swap), so there is no rush in fixing it, so to speak. Just gathering information, before deciding to do it or not.
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Old 01-03-2019, 09:20 PM   #17
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Originally Posted by self_moto View Post
Thanks for info(now YouTube suggests videos about Nikasil . )!

Added cylinder pics, there is a minor damage but I believe you can replace that sleeve only.

I look at this engine as a project and opportunity to learn how to rebuild one, I’ve swapped engine on bike last year(10k since swap), so there is no rush in fixing it, so to speak. Just gathering information, before deciding to do it or not.
If it's Nikasil you don't replace sleeves. You send the block in to a place like Millenium and they bore it out ( it's a small amount maybe .003", and then electroplate the liner back in, and rebore it and hone it. I don't think they do the inline fours one cylinder at a time. I think they only do all four. If it is one, it ends up about $350 ($250 for one plus $50 shipping each way), or all four $500-$700 or so plus shipping. The last two times it has cost me about $600. But I don't do them any more. I just buy another block.

Looked at the pics, that cylinder is gone. Looks like Nikasil.
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Last edited by afm199; 01-03-2019 at 09:22 PM..
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Old 01-04-2019, 12:02 AM   #18
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Cylinder is buggered. And more than 0.003" worth.

Get yourself a running engine and if you want to, take it apart and freshen it up.
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Old 01-04-2019, 06:39 AM   #19
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https://www.bikebandit.com/oem-parts...4263#sch740185 the parts fiche shows sleeves

I stand by my statement that it isn't worth fixing though
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Old 01-04-2019, 08:39 AM   #20
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https://www.bikebandit.com/oem-parts...4263#sch740185 the parts fiche shows sleeves

I stand by my statement that it isn't worth fixing though
Looks like it. Still not worth the trouble. The amount of junk that has spread around the engine interior is an issue as well. It can be amazingly hard to get out, including having to blow out all the oil passages and hope.
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Old 01-07-2019, 04:34 PM   #21
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@OP: Out of curiosity, how many miles are on the engine, what exactly happened?
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Old 01-07-2019, 11:03 PM   #22
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@OP: Out of curiosity, how many miles are on the engine, what exactly happened?
It had 38k miles on it. So, looking from images it looks like it dropped the valve.. what caused it - donít know for sure, after I got cover off, dropped valve (one sitting perpendicular) didnít have collet, not sure it was the cause or result of smashing valve into head.
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Old 01-08-2019, 06:50 AM   #23
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If it's Nikasil you don't replace sleeves. You send the block in to a place like Millenium and they bore it out ( it's a small amount maybe .003", and then electroplate the liner back in, and rebore it and hone it. I don't think they do the inline fours one cylinder at a time. I think they only do all four. If it is one, it ends up about $350 ($250 for one plus $50 shipping each way), or all four $500-$700 or so plus shipping. The last two times it has cost me about $600. But I don't do them any more. I just buy another block.

Looked at the pics, that cylinder is gone. Looks like Nikasil.
If it's like the older gen Triumph motors, the sleeves can come out of the crankcase individually.

Mad
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Old 01-08-2019, 11:51 AM   #24
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If it's like the older gen Triumph motors, the sleeves can come out of the crankcase individually.

Mad
Still, a complete disassembly, cleaning, inspection and rebuild is needed. Cheaper to buy a used runner.
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