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Old June 4th, 2020, 07:40 PM   #1
Tsurber
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Rod knock

I was told my 05 ninja is rod knocking I was told to do a engine swap. But I'm having a hard time finding a engine how hard is it to rebuild the engine
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Old June 4th, 2020, 07:58 PM   #2
Artruck
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Quote:
Originally Posted by Tsurber View Post
I was told my 05 ninja is rod knocking I was told to do a engine swap. But I'm having a hard time finding a engine how hard is it to rebuild the engine
Sad tidings.... the rebuild is harder and often more expensive than most can find a running engine swap. You will have to tear down the engine and split the case, then inspect the rods and crank to make sure they can be reused before you rebuild with new bearings and all new gaskets and consumables. It’s kind of a snow ball effect of “as long as I have it torn down this far” and you start to replace more and more parts and upgrade more parts. Then you have the cost of OEM vs aftermarket vs Upgrade / bigger displacement always coming up.

If I was you, I would cost out a who rebuild in several different ways (oem vs big bore) and figure for 120% cost, and then think about the value of the bike and how long it will take to find a used engine or some other engine swap. A ninja 500 engine “can” swap in. I have always thought about how cool a 2 stroke ninja would be.

Worst comes to worst, just tear it down and see how bad it is. That costs nothing is you have the time and space.
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Old June 4th, 2020, 08:29 PM   #3
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Engine-rebuilding requires quite a bit of experience and skill. Extremely easy to make mistake and destroy engine after all that hard work (~20-50hrs to rebuild). It's just not swapping parts, requires lots of precision measuring and machining.

Look on Craiglist and eBay, 250 engines come up regularly. You can even set up automated searches on both that will send you alert when one comes up. eBay search shows about 60+ engines ready to go.

Also check local junkyards within driving distance. There's some sort of website somewhere with junkyards listing their inventory that you can search.

I seriously planned a Banshee engine-swap. Would be a waste to fabricate all mounts for Banshee engine and stuff it into such heavy frame. Then chose to build custom-frame for it (with Ninja 250 bodywork of course). For the effort, I can get 50-lb savings over factory frame.
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Old June 5th, 2020, 05:07 AM   #4
Triple Jim
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Are you sure it's a rod knock and not something like the clutch making the noise?

Also, it might be good to change your location to something a little more generic.
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Old June 5th, 2020, 12:27 PM   #5
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If you have some time and want to learn about "Pre-Gen Clutch Basket Knock" and what can be done to remedy the situation, here's a thread that's got a lot of information.

https://www.ninjette.org/forums/showthread.php?t=259395
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Old June 18th, 2020, 05:32 PM   #6
spent_too_much
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Have you drained the engine oil lately? If so, did you notice "gold flecks" in it? I have noticed that the more abundant the flecks, the louder the knock. That's how I "verify" the engine needs replacement. It is free, and takes only a few minutes.

Please correct me if I am mistaken in my "scientific" approach
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Old June 18th, 2020, 08:47 PM   #7
Triple Jim
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Two weeks have gone by since we heard from @Tsurber. I wonder if he's coming back.
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Old June 18th, 2020, 11:13 PM   #8
Tsurber
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Still around guys just working
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