103 vs 107 upgrade
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Cruiser
Joined: Aug 2012
Posts: 194
Likes: 6
From: ohio
103 vs 107 upgrade
I;m about to pull the trigger on a 107 upgrade to my '12flhtk and one of the last curves thrown at me is
why when 103's at stage 4 are doing within 3-5hp&tq of a 107 why go there?
my planned 107
vee twin 107 heads cam t/b bore complete package---110hp/115tq
103 stage 4 upgrade shows capable of ----105hp/110tq
power vision,v&h power dauls,cfr slipon's
prices for the two are within 200 dollars
straighten me out,
thanx in advance
why when 103's at stage 4 are doing within 3-5hp&tq of a 107 why go there?
my planned 107
vee twin 107 heads cam t/b bore complete package---110hp/115tq
103 stage 4 upgrade shows capable of ----105hp/110tq
power vision,v&h power dauls,cfr slipon's
prices for the two are within 200 dollars
straighten me out,
thanx in advance
Grand HDF Member
Joined: Sep 2010
Posts: 3,580
Likes: 215
From: Illinois
.......all depends how bad you really want the extra HP. I would go for the 107, between the two. Harley stuff is just OK, but it's cookie cutter parts. Yes, others may have a 107 or whatever, but I'd like to break away from HD parts a bit cause there are some many more cam, head, and other options in general to make it really your own.
No to mention it will sound completely different from any other HD.
No to mention it will sound completely different from any other HD.
Seasoned HDF Member
Joined: Apr 2014
Posts: 5,472
Likes: 2,522
From: Lititz Pa
Why not go for the 107 cost about the same better parts. Me if I were getting into it I would go to a 124 with keeping the same throttle body so it don't get too crazy. I have a friend who done that, it rides and runs nice.
Road Warrior
Joined: May 2011
Posts: 1,956
Likes: 439
From: florida
[QUOTE=converted1;13436968]I;m about to pull the trigger on a 107 upgrade to my '12flhtk and one of the last curves thrown at me is
why when 103's at stage 4 are doing within 3-5hp&tq of a 107 why go there?
my planned 107
vee twin 107 heads cam t/b bore complete package---110hp/115tq
103 stage 4 upgrade shows capable of ----105hp/110tq
Hell you should check out this joker on a thread called "are cams worth the money" he claims on getting 119tq on his cam only 103ci and his buddy has 111tq on his stage 1 only! Man why do any more stages and blow cash when these guys figured out the magical pipe and air box to create more power torque than the 103/107 stage 4 possibilities noted above. LOL I love the internet...it's where fantasy comes to life.
On a serious note, go with the 107.
why when 103's at stage 4 are doing within 3-5hp&tq of a 107 why go there?
my planned 107
vee twin 107 heads cam t/b bore complete package---110hp/115tq
103 stage 4 upgrade shows capable of ----105hp/110tq
Hell you should check out this joker on a thread called "are cams worth the money" he claims on getting 119tq on his cam only 103ci and his buddy has 111tq on his stage 1 only! Man why do any more stages and blow cash when these guys figured out the magical pipe and air box to create more power torque than the 103/107 stage 4 possibilities noted above. LOL I love the internet...it's where fantasy comes to life.
On a serious note, go with the 107.
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HDF Community Team
Joined: Jun 2006
Posts: 12,774
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From: san antonio
Here's a home built carbureted 107, but it is an all bore 107, not a "stroker". Dyno has the reputation as being "stingy". If the bike was fuel injected, well, she would be stronger. Why pass on the potential for more TQ/HP for $200??
$200 is pretty cheap for those little extra gains! Tell me where you can pick up 5hp AND 5tq for $200 and no extra work. You can't.
Plus the 107 kit is going to be more reliable IMO, better parts and there is more gains that can be had on the 107. The 103 with a stage 4 is pretty well maxed out, minus forced induction. so if you want to get even crazier the 107 has some more left to give before you need to go to forced induction to pick up more power.
Plus the 107 kit is going to be more reliable IMO, better parts and there is more gains that can be had on the 107. The 103 with a stage 4 is pretty well maxed out, minus forced induction. so if you want to get even crazier the 107 has some more left to give before you need to go to forced induction to pick up more power.