Howdy! Quick question.... I've got a stock 103 in my bagger that just sits around... and my 12 FXDC I ride as my daily rider. I love my Dyna, no problems, all is well... A buddy of mine offered to buy my bagger, but doesn't have enough cash for it. I told him I'd sell it to him as a 96" instead of the 103 for the price he offered me and he's cool with it. My only question is, swapping jugs onto my Dyna, I can use the same '96 heads, right? I don't want to use the 103 heads because I have upgraded springs and valves in my Dyna. Both bikes have 40k miles. I planned on lifting the cylinder enough to remove the wristpin and leave the pistons in the cylinder to avoid having to reseat rings and breaking in on both bikes (I freaking hate breaking in engines, I'm an impatient aggressive rider lol). Anything besides checking for scoring/bore issues I should be concerned with? Or just swap em, replace all my gaskets and breathers and call it a day? I've put all the miles on both bikes and maintain them religiously. So I know they are good engines.

I've done a bit of reading on here and elsewhere and some people say the ACR's make a big difference, some say they don't and just run it. Just looking for more info before I pull the trigger this week and do it.

and before we go on the "spend the money and go 107 or 110" or build my 96 or whatever, 90% of that money is being used to pay off another loan I have so the cash wont be available for me to use.

Thanks guys!

 

For me that's a lot of work and trouble for a dubious and small savings.

If you want to upgrade your 96, just buy a set of 103 pistons off Ebay and have your cylinders bored. Or, if you want, buy bigger pistons and bore for a 107.

I wouldn't relish the prospect of tearing the top end off two bikes to upgrade one.

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I know this probably isn't what you want to hear but I agree with leafman 100% that's a lot of work for very little return. I'd highly suggest you take his advice on the 107. When I get a bagger as my second bike/daily driver I'm gonna do a 107 build from fuel moto cause you can make a lot of power and still retain reliability and longevity of the motor. Fuel moto has great deals on 107s.

 

Well... I pulled the trigger and made it happen. I must say. HUGE RETURN for the 500 or so bucks my shop charged me. I went from making (hp/tq) 91/92 to 97/107. Would you like 15lbs of rear wheel torque for 500 bucks? I'll take it all DAY!! My dyno tuner tunes for usability, not peak numbers, so I know it could be more. But hot damn!! That's with just a cam, intake, and exhaust! This little baby rips now!!

 

Either you’re dyno tuner lied to you, or you’re lying to us. There’s no stock 96in bike making 91, 92 hp. You’re full of ****. I know this post is old, I just have a problem with people throwing bullshit out there

 

Well he hasn't been around in 2.5 years so he probably won't hear you

 

AGREED!!!!!! Just had to get that off my chest!!!!!,,,,,,,,……..