Bottom end only
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Bottom end only
I have 80 ci Evo with only 24 k miles. Flywheels got out of true a bit, so I am shipping the bottom end off to get trued and have new bearings put in etc. my question is, would it be ok, providing the cylinders and rings are in good shape to put them back on
and use them as is or is it standard procedure to hone cylinders and install new rings whenever you
Have things apart. I have other bikes I ride so it will probably be 5 more years before the motor reaches 50 k. Its my around town bike. Appreciate any input. Thanks
and use them as is or is it standard procedure to hone cylinders and install new rings whenever you
Have things apart. I have other bikes I ride so it will probably be 5 more years before the motor reaches 50 k. Its my around town bike. Appreciate any input. Thanks
Last edited by vikemaster; Aug 21, 2022 at 05:55 PM.
HDF Community Team
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From: NC USA
With those few miles, hone the cylinders with a 240 grit ball flex hone. New rings, Hastings 2M-6164-std should be all it would need.
Use OEM gaskets. Contrary to popular belief, the current style cylinder base gaskets do not leak and the rocker cover gaskets fit better than anything out there.
Use OEM gaskets. Contrary to popular belief, the current style cylinder base gaskets do not leak and the rocker cover gaskets fit better than anything out there.
Thread Starter
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Intermediate
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With those few miles, hone the cylinders with a 240 grit ball flex hone. New rings, Hastings 2M-6164-std should be all it would need.
Use OEM gaskets. Contrary to popular belief, the current style cylinder base gaskets do not leak and the rocker cover gaskets fit better than anything out there.
Use OEM gaskets. Contrary to popular belief, the current style cylinder base gaskets do not leak and the rocker cover gaskets fit better than anything out there.
HDF Community Team
Joined: Dec 2005
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From: NC USA
On your other thread, it was mentioned to remove the cylinders, leaving the pistons in place. On a healthy top end, that is totally acceptable and common practice when replacing base gaskets. But I always hone and replace rings if the pistons are removed from a cylinder that's already been run past break-in.
Don't re-use the removed wrist pin clips if you go that route, replace with new.
Don't re-use the removed wrist pin clips if you go that route, replace with new.
Last edited by t150vej; Aug 23, 2022 at 09:11 AM.
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My Dyna was smooth as silk. The rev limiter was mistakenly set too high on my Dyna 2000 ign module
and the rpms ran too high while out riding and felt a difference immediately. Its not extreme but I can feel the difference and I want that smooth balanced feel back
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Did you do a compression test. High rpms may have had a little valve float. Maybe bent a valve just enough to loose compression in one cylinder. If compression uneven by more than 10% do a leak down test
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Thread Starter
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But it definitely would be a good idea to do that simple test to eliminate that possibility before I pull the whole motor out .Thanks!
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From: NC USA
I agree you should ride it and check the simple things before diving into a big $$ project on hopes of eliminating a vibration. There's a long list of things that can cause vibration, like loose engine mounts/bolts, primary chain adjustment, exhaust loose or touching somewhere it shouldn't or belt adjustment just to name a few.
Since it's an Evo, start another thread in that section with the model and year and any physical modifications (exhaust, etc) There's a lot of guys there who can offer more specific places to look/check if we know what you're riding.
https://www.hdforums.com/forum/evo-classic-models-84/
Since it's an Evo, start another thread in that section with the model and year and any physical modifications (exhaust, etc) There's a lot of guys there who can offer more specific places to look/check if we know what you're riding.
https://www.hdforums.com/forum/evo-classic-models-84/