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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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  #11  
Old 28th April 2014
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Originally Posted by Lenster View Post
That's brutal. Wonder what the hell happened? Almost looks like the lifter could have turned sideways (I'm not even sure that's possible...).
Oow that sucks but I'm thinking it turned side ways. had a mustang do that to me once what do your anti rotation pins look like?

Last edited by Folkie; 28th April 2014 at 01:18..
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  #12  
Old 28th April 2014
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Originally Posted by Bob s hog View Post
Oow that sucks but I'm thinking it turned side ways. had a mustang do that to me once what do your anti rotation pins look like?
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Last edited by Folkie; 28th April 2014 at 01:18..
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  #13  
Old 28th April 2014
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Originally Posted by rocketmangb View Post
Not sure what happened but I kilt the # 4 Cam and Lifter.

These threads are starting to make me even more paranoid than I am now.
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  #14  
Old 28th April 2014
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Originally Posted by Bob s hog View Post
Oow that sucks but I'm thinking it turned side ways. had a mustang do that to me once what do your anti rotation pins look like?
+2 - sure looks like the lifter rotated to me, you can see the skid marks on the lifter roller where it was running sideways on the cam. I don't see how the cam could be the culprit, it just took the beating.
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Last edited by Folkie; 28th April 2014 at 01:18..
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  #15  
Old 28th April 2014
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Originally Posted by rocketmangb View Post
Not sure what happened but I kilt the # 4 Cam and Lifter.

\

George,

Do you think the lifter could have lost contact with the heel of the lobe?

Does the wear pattern on the other cams look like this one?

Tom Beckner
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  #16  
Old 28th April 2014
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Ouch, sorry to see that. As others have mentioned, sure looks like the lifter turned.....
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  #17  
Old 28th April 2014
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Don't sweat it. If you want the ultimate, you have to be willing to pay the ultimate price. Unfortunately it went south. We've all been there. March on rocketmangb
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Old 28th April 2014
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deleted - comment no longer necessary since the uncalled for post was removed.
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Old 28th April 2014
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My experience with high output motor dictate me to check for the lifter bore very closely, I've state before that I believe that lifter stay good a long time and the bore seem to be overlook often. I've always match the lifter with proper bore on high lift application. Worth the time to check this situation.
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  #20  
Old 28th April 2014
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In that position would the valve open early and close late also? Should you be worried about valve to piston contact?
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