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S&S 106 big bore

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Old Dec 2, 2009 | 06:13 PM
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Angry S&S 106 big bore
bike is apart im doing an s&s 106 big bore 10 to 1 compression and some head work just wondering anybody out there has done it yet. only down fall is a required 1000 mile break in period. dyno tune probally wont be till spring.
 
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Old Dec 2, 2009 | 06:16 PM
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Why such a long break in period?
 
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Old Dec 2, 2009 | 06:41 PM
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s&s fits the pistons at .001 to .0015 dont ask me why, its going to be a cold break in period
 
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Old Dec 2, 2009 | 07:03 PM
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Be sure and tell the porter that you have 10-1 pistons. If he mills anything off your heads it will be too much compression for those 37s and it will ping. Those cams run best at around 9.8 cr. I suggest using .040 head gaskets not .030.
 
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Old Dec 2, 2009 | 07:10 PM
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Originally Posted by thedonthere
Be sure and tell the porter that you have 10-1 pistons. If he mills anything off your heads it will be too much compression for those 37s and it will ping. Those cams run best at around 9.8 cr. I suggest using .040 head gaskets not .030.
Take this advice. I put one together and it was a ping monster in the heat. I would try some Singh grooves in the heads while you are there.
 
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Old Dec 2, 2009 | 07:15 PM
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Originally Posted by BLKBAGGER
Take this advice. I put one together and it was a ping monster in the heat. I would try some Singh grooves in the heads while you are there.
what model bike did u do
 
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Old Dec 2, 2009 | 07:19 PM
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It was on a bagger.
 
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Old Dec 2, 2009 | 07:21 PM
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Originally Posted by thedonthere
Be sure and tell the porter that you have 10-1 pistons. If he mills anything off your heads it will be too much compression for those 37s and it will ping. Those cams run best at around 9.8 cr. I suggest using .040 head gaskets not .030.
no crazy port work just a little around the valve seat and larger valves 1.90 int. and 1.60 exh....... not head shaving .....over budjet already maybee down the road about complete port work all depends on the dyno numbers
 
Last edited by 07 dyna man; Dec 2, 2009 at 07:29 PM.
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Old Dec 2, 2009 | 07:26 PM
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Originally Posted by BLKBAGGER
It was on a bagger.
i gotto
ask how she run
 
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Old Dec 2, 2009 | 07:38 PM
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Originally Posted by BLKBAGGER
Take this advice. I put one together and it was a ping monster in the heat. I would try some Singh grooves in the heads while you are there.
I agree with BLKBAGGER on the grooves. I am getting ready to put a 98" kit in my bike and my head porter asked me to bring my heads to him for the grooves.
 
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