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[schreijo]

How many miles should I expect before the engine needs to be rebuilt?  I'm at a point where I need to decide to buy a new bike or keep riding it and expect to rebuild in the future.  

[BLM777]

How many miles should I expect before the engine needs to be rebuilt?

[JimsSEEG]

Depends on the curretn conditon of the engine. Compression, oil consumption, power output, etc, etc, etc.  If you can check on a few things (or have them checked out by an independant or dealer) and get an estimate of the current condition of the motor compared to the number of miles, that will give you an idea.

You can have an engine last 100k miles that's been well maintained and aserviced or be ready for a rebuild in 10k miles on an engine that gets thrashed every times it goes out.  Depends on the rider, riding style, maintenance, and a host of other items. This is about like "how long should my tires last" - just depends.

Jim

[schreijo]

100 K out of an aircooled engine sounds to good to be true.  I had always heard performance will drop off around 40,000.  Is the twin cam durability that much better than the evo engine?

[spydglide]

performance drop off at 40K miles should not be that noticeable......sure, some loss of compression, but no great rideability performance drop.  I base this on personal experience with EVO engine, not twin-cam, although I would not expect much difference.  Not unusual to get 100K plus miles out of a EVO without any major work, just routine maintenance.  Way different from the older HD motors (knuckles, pans, and even shovels).   [smiley=xyxthumbs.gif]   spyder

[JCZ]

100 K out of an aircooled engine sounds to good to be true.

[hd-dude]

My biggest concern would be the cam shoes. If they are not inspected and or replaced every 15 - 20k at the most your looking for problems. The other alternative is to switch to a gear drive setup.

[Dr. Evil]

A buddy has a 2000 95" RKC.

[Willie D]

My biggest concern would be the cam shoes. If they are not inspected and or replaced every 15 - 20k at the most your looking for problems. The other alternative is to switch to a gear drive setup.

I am with ya there. I had mine replaced at 50K and it now has 63,500 and seems to run stronger that when it was new....Dealer always said that they are traded before they get broke in, I think he's correct. .  .. I hate to think of getting a new set of wheels, but after I put 100K on the SERK......who knows ? [smiley=nixweiss.gif]

[hd-dude]

I am with ya there. I had mine replaced at 50K and it now has 63,500 and seems to run stronger that when it was new....Dealer always said that they are traded before they get broke in, I think he's correct. .