Thread: Broken rod bolts
09-04-2011, 10:41 PM #1
Broken rod bolts
The last 2 rxp's I parted out had slung rods. Both has broken rod bolts and no evidence of bearing failure. What would cause this? Both engines were stock and the cases never split. One rod cap was embedded so deep the bottom of the block I could not get it out.
09-05-2011, 12:20 AM #2
WOW. I would have said over torqueing/ stretching of the Rod bolts. But would think that would be closely guarded on assembly at Rotax, if your sure they have never been opened.
09-05-2011, 01:23 AM #3
So the crank looks ok with no burn marks that havnt been taken out by the rod ? Generally you would assume oil issue, bad/ stretched bolts or bearings as you already would of. Hydro locked at some point maybe ?
09-05-2011, 08:35 AM #4
09-05-2011, 08:52 AM #5
09-05-2011, 12:57 PM #6
Hey 8, did you ever get water in the motors and have to pump it out cranking it over???
09-05-2011, 02:35 PM #7
They were not my ski's. I bought them to part out. They were 05 and 06 rxp's. The 05 may have had an oiling issue as I found a couple of pieces of a ceramic washer. There were some gouges on the crank from hitting stuff but no real indications of a burnt bearing. The rod yanked out of the piston....maybe that was due to a previous hydrolock....which cracked or weakened the piston?
09-05-2011, 05:32 PM #8
- Join Date
- Jul 2005
- Lake Dunlap, Texas
"The rod yanked out of the piston"---you just answered your own question. Hydrolock can cause this. I presume you got the skis very cheap.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By crashhard in forum Sea Doo ClassifiedsReplies: 0Last Post: 07-19-2011, 12:10 AM
By boostaholic in forum 4-Tec PerformanceReplies: 9Last Post: 03-09-2010, 01:25 AM
By boostaholic in forum 4-Tec PerformanceReplies: 4Last Post: 04-12-2009, 06:37 AM
By Mark S in forum 4-Tec PerformanceReplies: 3Last Post: 01-19-2009, 10:26 PM
By btbsteve in forum Kawasaki Open DiscussionReplies: 4Last Post: 09-01-2008, 12:42 AM