Fat Bob w/ the 103 big bore
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I would be careful doing a 103 because a lot of people are having problems on some of the older bikes with flywheel runout. Also if you doing a 103 you should get SE 103+ heads, big bore throttle body, respring the heads with high lift springs, put a real good cam in like a woody's .650 lift, roller rockers, roller rocker supports, new pushrods and pushrod tubes, and if your going that far i would have the case bored and do a 110 kit with a SE flywheel that is forged and can handle the power. Do some searching on the net about people having flywheel problems. I have an 06 with a rather well built engine and my motor has beaten a lot of 103's on the dyno.
#19
Guess it depends on the "stage" you're going to as much as the "big bore". Assuming you have a 96 and looking to upgrade. I have a '10 fat bob and went with the stage 4 kit out of the 2010 catalog. didn't do any work myself (because i'd surely f* something up). numbers are on the dyno sheet in my pics (roughly 104+ tq/109+ hp). overall, serious improvement, but probably would have been happy w/ stage 2. stage 4 is crazy power but the power band is not in the normal riding range - the low end torque is a bit lacking (doesn't really come on 'til around 2800 RPM), but you can literally "feel" that bike come to life when it does. depends on what you're looking for...
someone else mentioned a whole new motor and argued cost - well, given that i paid labor (not complaining - again, just can't/won't do the work myself), if I had to do it again judging performance against what I paid, I'd have gone with a 120 or maybe another option (http://www.southern-mc.com/smwprseen.html)
someone else mentioned a whole new motor and argued cost - well, given that i paid labor (not complaining - again, just can't/won't do the work myself), if I had to do it again judging performance against what I paid, I'd have gone with a 120 or maybe another option (http://www.southern-mc.com/smwprseen.html)
#20
I installed my 103 kit on my fxdl, i am an experienced wrencher have rebuilt many a motor. to be honest I was a little intimidated at first to take apart a v twin as it was my first, but once I got into it i found it to be very easy to work on. A few things i would recommend is a lift don't have to have it but it will save your knees torque wrenches, blind hole bearing puller, and a service manual. Also go on You Tube and watch the videos a few times by S&S they will walk You threw the hole thing from removing the gas tank to turning the last bolt very helpful.