IPB going bad
#21
08-24-2010, 01:55 PM
Road Captain
Join Date: Oct 2009
Location: So Cal
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All models? Please, somebody show me the evidence.
You are correct; HD has had issues with their IPB bearings for a long time... but different issues.
This is directly from Baker's website (including the "fi ne" typo):
“HIGH TORQUE BEARING KIT
The 34091-85 inner bearing race has been used on Big Twins since 1985. The inner primary bearing rides on this race. By design, this race press-fits onto the transmission mainshaft. This system works fi ne for stock engines. 100 HP+ engines will make this bearing walk on the mainshaft. If it walks inboard, it will damage the maindrive gear seal and cause a transmission oil leak. If it walks outboard, it will cause a primary oil leak. Our high torque bearing kit eliminates this condition. Kit includes a precision honed bearing and seal.”
The issue with the 06 and early 07 Dynas is a little more serious than the bearing “walking” on the main shaft, causing a seal leak.
#22
03-03-2015, 07:37 PM
Cruiser
Got everything done last Saturday and did a 300 Mile function check to Des Moines Iowa to visit my brother. The stock bearing was totally shot. Results: the bike runs night and day smoother with upgraded commensator and new IP Bearing. 31 T pully did not provide stump pulling lower end power but enhanced cruise significantly. I also picked up a 3-4 MPG increase. I averaged 45.8 on Highway coming home. 5-6th is more responsive passing at cruising speeds than before.
As far as a deep issue?? I don't understand; but I won't wait 30K before I change something else. I will do something in about 15K, just don't know what yet, another bad bearing would give me an excuss to change something:-)
As far as a deep issue?? I don't understand; but I won't wait 30K before I change something else. I will do something in about 15K, just don't know what yet, another bad bearing would give me an excuss to change something:-)
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