103/107 kit question
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Road Warrior
Joined: Jun 2010
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103/107 kit question
I currently have a 08 Ultra Classic, in February my scooter is paid off. I want to bump up the ponies, so I was going to do a 103 kit with cams. I have also been reading about the 107 kits.
What would your recommendations be for either? With the 107 kit, do I need to separate the lower cases? What would be a good brand for either kits? Also are there kits out there with the cams and the motor kits sold together, or do you have to purchase them separately?
Thanks
What would your recommendations be for either? With the 107 kit, do I need to separate the lower cases? What would be a good brand for either kits? Also are there kits out there with the cams and the motor kits sold together, or do you have to purchase them separately?
Thanks
You can do either without splitting the cases. Either way you go I would highly recomend getting the head done as well. I see FuelMoto has a 107 kit out now, reasonable price. Doesn't include headwork though. I just put a Revolution 107 kit (Zippers) in a buddies bike, havn't dyno'd it yet but it's a pretty nice kit.
Ultimate HDF Member
Joined: Nov 2008
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Fuel Moto 107 kit doesn't require splitting the cases or headwork, has all the parts needed and they seem to have excellent customer service. Im strongly considering their kit for all of those reasons and they are showing really nice numbers and curves on their dyno sheets at a reasonable price.
Road Warrior
Joined: Jun 2009
Posts: 1,514
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From: Canada
I'm planning a 107 build in the spring. You don't need to split the cases, but I am going to install the Darkhorse crank (dynamically balanced) and getting the bearing upgrades too. 107 (Axtell) and having the heads and intake ported / polished by Baisley.
Tuning + Exhaust...
Dunno exactly the price but be bye bye warranty. 103 ST 2 is warranty friendly, but my 96 with cams beats 'em on the dyno.
Warranty is important, but... Torque is forever.
Ha ha
A little cheezy I know.
What ever you decide anything over stock is good. I'm Andrews 26H SE Heavy Breather, and SE Street performance exhaust, TTS and professional tune.
Best o luck
H
Tuning + Exhaust...
Dunno exactly the price but be bye bye warranty. 103 ST 2 is warranty friendly, but my 96 with cams beats 'em on the dyno.
Warranty is important, but... Torque is forever.
Ha ha
A little cheezy I know.
What ever you decide anything over stock is good. I'm Andrews 26H SE Heavy Breather, and SE Street performance exhaust, TTS and professional tune.
Best o luck
H
Road Warrior
Joined: Nov 2009
Posts: 1,444
Likes: 1
From: SC
You shouldn't need to split the cases until you go 110. That's why the 107 is so popular. Many companies make the 107 kits. Shop around and google it. Call a few of the shops that make the kits. They can make a kit to fit what you want out of it. You can go all out and push it over 120tq or you can keep it down around 115tq. But the more tq you want the more it may cost. You could be looking at new exhaust, intake, tuner, the kit, maybe a throttle body, plus gaskets , oil and other shop costs. If your not careful it could push you over 5 grand quick. In that case you may come out better buying a crate 110 or the new 120 for harley by Jims. Then you can keep or sell your 96. This is a can of worms with many varieties.
Ultimate HDF Member
Joined: Aug 2008
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From: eastern oklahoma
veteran 75 hit the nail on the head concerning cost vs what you get. for what it costs to build a top notch 103, you're getting close to the cost of the 120 motor. i have harleys kit part number 27544-10, and i'm really happy with the motor, i can't imagine me wanting any more power and torque than i have, at least for my streetglide.
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Road Warrior
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This is the dilemma I'm having… go 103/107, but for everything I need and the costs, plus the time to install, I might as well spend a little more and get a crate 110. However, I have heard so many stories about the 110s having issues with the cranks. Is I go a little more and get a 120, which is over kill for a touring bike. And since the 120 is a race motor, how well will that hold up for a touring motor, riding long distances…
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Tourer
Joined: May 2009
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I chose to go the 107 from tman route, however there are several out there looking to the 120R for touring performance. The forum Harley Tech Talk has several threads regarding stock 120R's being installed and ridden, and I know of at least 3 that are getting special attention to make them really shine in the touring platform. If are seriously considering going to the 120R I would head over there and do some reading. I know there are a few threads regarding the 120R here that are also informative, but try to find the earlier ones as a lot of the recent ones (last month or so) are just referring people to the early ones.