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Old 12-04-2012, 08:35 AM   #1 (permalink)
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High mileage 103s

Anybody running a high mileage 103 on the new touring line, I know they are a recent production model but some folks actually run them as daily drivers and I am looking for anybody with a 100k plus 103 for feedback on reliability. I hear there have been some problems with the long stroke and heat management system scoring rear cylinders with failures around 30-40k. Trying to decide to reman my 88 or buy new. Thanks
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Old 12-04-2012, 08:58 AM   #2 (permalink)
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4 years of year round riding, 103 built with 10.5CR.. Romp and stomp, not babying it at all. 40-ish K miles. Developed a piston slap on the front, bored it .010 over and back at it.
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Old 12-04-2012, 09:51 AM   #3 (permalink)
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No problems with the motors that i can say is a trend. I can say, the newer bikes do have slightly more breakdowns for drive line stuff.
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Old 12-04-2012, 10:49 AM   #4 (permalink)
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Not at the high miles you ask, but I have 47,000 miles on my 20 month old 2011 Road King Classic, 103 engine is perfect and has had no problems or concern. I service at 4,000 miles using 20/50 Valvoline synthetic.
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Old 12-04-2012, 12:19 PM   #5 (permalink)
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Not to hijack your thread, but what about 96 inch? I know the 88's are good, right? Just stay outside the internals.
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Old 12-04-2012, 05:37 PM   #6 (permalink)
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Quote:
Originally Posted by Peacekeeper View Post
Anybody running a high mileage 103 on the new touring line, I know they are a recent production model but some folks actually run them as daily drivers and I am looking for anybody with a 100k plus 103 for feedback on reliability. I hear there have been some problems with the long stroke and heat management system scoring rear cylinders with failures around 30-40k. Trying to decide to reman my 88 or buy new. Thanks
The 103 is the same as the 96 with a bigger bore. Same stroke on both engines. So, there should be no significant differences, as far as reliability and longevity between these two motors.
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Old 12-05-2012, 02:37 PM   #7 (permalink)
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Not sure if the newer years are all the same, but my 2011 flhtp has an automatic shut off for the rear cylinder if it gets hot or loses oil pressure. The oil cooler on these motors helps with the heat. I've only put on 6400 miles since I bought it this summer and haven't had any problems yet. Switched to Red Line synthetic at 1000 miles. I will change it every 3000 miles.
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Old 12-05-2012, 02:59 PM   #8 (permalink)
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The Sheriff Dept in my are has a bunch of them, they get run to about 80K and then they return them to the dealer to be sold to the public, have a couple of buddies that just turned in their 09 for a 13, his had 70+k on the odo, not a single problem with regular maintenance, and one clutch replacement.
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Old 12-05-2012, 03:30 PM   #9 (permalink)
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May depend on which 103" you're talking about. For instance:
Older 88" cu + 95" jugs + longer rods= Screaming Eagle 103"
Newer 96" engine + bigger jugs= 103"
New 103" engine + longer rods= 110"

So when you talk about dependability, my understanding has always been that the more "square" a motor is, the smoother it will run and the longer it will last. So if that is indeed the case, then the new and non stroked 103" would be the better of the two 103's
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Old 12-05-2012, 05:36 PM   #10 (permalink)
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Quote:
Originally Posted by El Mongo View Post
May depend on which 103" you're talking about. For instance:
Older 88" cu + 95" jugs + longer rods= Screaming Eagle 103"
Newer 96" engine + bigger jugs= 103"
New 103" engine + longer rods= 110"

So when you talk about dependability, my understanding has always been that the more "square" a motor is, the smoother it will run and the longer it will last. So if that is indeed the case, then the new and non stroked 103" would be the better of the two 103's
If i'm not mistaken, the 96 engine, which started in 07, is nothing but a stroked 88. The now standard 103 is just a bigger bore on the old 96.
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Old 12-05-2012, 08:36 PM   #11 (permalink)
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claydbal is reading this now saying WTF is this?
El momgo. Your info is wrong.
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