1982 Sportfire Crankshaft
1982 Sportfire Crankshaft
Hi, I am working on my 82 Sportfire engine and found that the center bearings on the crank float. I can move both bearings and center seal side to side approximately 1/8". I have not had a sportfire motor apart but I do know this is not the case on just about every crank I have worked on. Can anyone shed some light on this. The bearings roll fine, but it does concern me that the float on the crank. Thanks for any input.
1973 John Deere 400-Fall 08-Ongoing project
1980 John Deere Trailfire 340 (RAT)- Spring 09- Daily rider
1982 John Deere Trailfire 340 - Spring 12- Daily rider
1980 John Deere Liquifire 440- Fall 12
1976 Arctic Cat Jag 2000 F/A Fall 10
1976 Arctic Cat Jag 3000F/A- Summer 10-Daily Rider
1980 Arctic Cat Jag 3000F/A-Summer 10
1988 & 1991 Polaris Indy 650s
"If You Don't Know Where To Start, Go Back To The Beginning"
1980 John Deere Trailfire 340 (RAT)- Spring 09- Daily rider
1982 John Deere Trailfire 340 - Spring 12- Daily rider
1980 John Deere Liquifire 440- Fall 12
1976 Arctic Cat Jag 2000 F/A Fall 10
1976 Arctic Cat Jag 3000F/A- Summer 10-Daily Rider
1980 Arctic Cat Jag 3000F/A-Summer 10
1988 & 1991 Polaris Indy 650s
"If You Don't Know Where To Start, Go Back To The Beginning"
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nick80lf
- Posts: 1159
- Joined: Thu Jan 14, 2010 10:45 pm
- Real Name: Nick
- Location: The snow free zone of Ohio
Re: 1982 Sportfire Crankshaft
Center bearings moving side to side doesn't sound normal to me. The only Sportfire motor I've been into was an 80. Never seen this on any of the liquifire or snowfire motors I've been into.
80 Liquifire (purchased 1996 ~ Running)
80 Liquifire (purchased 2010 ~ Running....Now)
80 Liquifire (purchased 2011 ~ Not running - I officially have a problem now)
83 Snowfire (purchased 2014 father/son restoration project)
78 Spitfire ~ sold (should have been shot for this)
80 Liquifire (purchased 2010 ~ Running....Now)
80 Liquifire (purchased 2011 ~ Not running - I officially have a problem now)
83 Snowfire (purchased 2014 father/son restoration project)
78 Spitfire ~ sold (should have been shot for this)