Need advice for 103
I went from a 96 to 110 on my 2010 SG, along with other mods, see signature below. So glad I did. She rocks now.
BTW, thank you for your service!
If it is, then absolutely go for it!
It is just a matter of what you are expecting out of the bike.... everything works together.... the heads, cams and exhaust all have to work together (be matched so they are all making power in the same range) along with the displacement and compression ratio.
Personally I'd PM @fuelmoto or call them to go over your options.... you may want to read up on "square" motors, that is when the bore and stroke are near equal, and a 107 is iirc square... 103 (under square) behaves differently than square (107) and over square (110)
If you don't match the parts (and tune) so that things work together.... like you have cams that are happy at 3500 to red line, and your heads are machined for off idle to 3500 (low end torque) then you are tossing money away and will be wondering why the bike does not due what you expected.
You may find after talking to Jamie that you can slide new pistons into your 103 with some cams and a good canned map and be happy, the 103 can easily do 110 HP/110 torque with the right parts
speed/torque/HP gains are all a function of how much you want to spend
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Decide your budget an talk to Fuel Moto. I got my power vision tuner there an my mid pipe. On a budget the minimum is a tuner, exhaust, cam. The displacement kit adds roughly a grand to it. If you want to slap a set of cams in an tune it the andrews 48's are hard to beat. Fuel moto did a cam shoot out that's in the threads at the top of the touring forum you can look at the results an numbers the rpm range you plan to ride an make a decision.
Also I read somewhere about boring the cylinders helps the motor breath by unshrouding the valves near the piston walls.
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Unless you've got money burning a hole in your pocket and want dyno numbers to brag about--in which case, go crazy!












