Buster91dg Posted December 12, 2015 Report Posted December 12, 2015 Banshee just rebuild with std Wiesco crank and Pistons. 2 hours on engine is that normal or do I have a problem runs and rides great. https://vimeo.com/148744974 Quote
sheerider11 Posted December 12, 2015 Report Posted December 12, 2015 Did you bore the cylinders or put new pistons in? What were the measurements? End gap? Quote
Buster91dg Posted December 12, 2015 Author Report Posted December 12, 2015 It's bored 64.50 bought Quote
sheerider11 Posted December 12, 2015 Report Posted December 12, 2015 It's bored 64.50 boughtWere they bored to the pistons? Or just a bore and whatever pistons were on the shelf? Quote
Buster91dg Posted December 12, 2015 Author Report Posted December 12, 2015 Not sure bought it off craigslist I think it was just bored when it blew up does there seem to be a problem or I'm good Quote
sheerider11 Posted December 12, 2015 Report Posted December 12, 2015 Videos are horrible for diagnosis. But a rattle like that could be piston slap. I asked about that because you said it was just rebuilt. Quote
Buster91dg Posted December 12, 2015 Author Report Posted December 12, 2015 It's not a violent vibration just the sound my band new snowmobile sounds the same way so I was assuming that it was normal Quote
Buster91dg Posted December 13, 2015 Author Report Posted December 13, 2015 Is the fly wheel out of balance Quote
ShrpShooter Posted December 17, 2015 Report Posted December 17, 2015 (edited) Very strange, I have the exact same thing going on with my brand new 4 mil stroker. Not sure what's causing it... Everybody seems to say it's normal on the banshee with 4 mil long rod crank. My bore is 65mm and HJR bored them to my weisco pistons. When I first opened it up, my flywheel was rusted to all hell and I had it sandblasted and put it back on with my new build. I'm wondering if the material lost from the rust etc and then sandblasting it threw it all off balance. Edited December 17, 2015 by ShrpShooter Quote
Buster91dg Posted December 17, 2015 Author Report Posted December 17, 2015 Very strange, I have the exact same thing going on with my brand new 4 mil stroker. Not sure what's causing it... Everybody seems to say it's normal on the banshee with 4 mil long rod crank. My bore is 65mm and HJR bored them to my weisco pistons...I'm hearing mixed things too my bore is 64.50 thing rips I'm taking it Saturday to ken o Conner racing to have him listen to it lucky he's local Quote
sleeper06 Posted December 18, 2015 Report Posted December 18, 2015 It's hard to tell but it sounds like a collapsed skirt or could've had a cold seizure Quote
Buster91dg Posted December 18, 2015 Author Report Posted December 18, 2015 The skirt on the piston? I just put them in they were all fine and cold seizure? What's that Quote
sleeper06 Posted December 18, 2015 Report Posted December 18, 2015 Piston expands quicker than cylinder and seizes ,, it can cause skirt to collapse, overheat can cause it. Rounded bore!! All give sounds like that , piston chatter on accel n decel Quote
Buster91dg Posted December 18, 2015 Author Report Posted December 18, 2015 Really do you think it's something with he crank maybe a rebore but I don't want to throw money at it if it's not the issue Quote
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