What's it like to own a well tuned 107?
#11
10-27-2010, 06:38 AM
Extreme HDF Member
Back in the day, Chevrolet offered the 327 c.i. engine in 250, 275, 300, 350 and 365 horsepower versions. 107 kits are by no means standardized and can be built with torque biased cams versus high rpm horsepower cams, bigger valves, bigger injectors, etc.
Are you going to have manual or automatic compression releases in the heads?
Sounds like a nice build and a big jump from what you currently have. It won't be sport bike fast, however.
Carl
Are you going to have manual or automatic compression releases in the heads?
Sounds like a nice build and a big jump from what you currently have. It won't be sport bike fast, however.
Carl
#12
10-27-2010, 06:44 AM
Road Master
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I can't imagine the torque and power.
I know I would love to hide this in my stock E.G.
http://www.jpcycles.com/product/420-...utm_medium=cse
I know I would love to hide this in my stock E.G.
http://www.jpcycles.com/product/420-...utm_medium=cse
#13
10-27-2010, 07:01 AM
Road Warrior
You know Leo, for the first time I have to agree with you. Anyone thinking they will get longer mileage out of a Harley motor built for performance just doesn't know about these bikes. I have friends with stock motors that have over 100K and no issues other than routine maintenance. Anytime you modify your motor from stock you are increasing the stress on the motor. Do you honestly think you can increase the pressure on the stock crank and expect it to last as long as stock? Good Luck
#14
10-27-2010, 07:54 AM
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I have talked to the builder about my riding style and my goals, and he has proposed this build. He says the motor will be reliable and approach the service life of a stock motor. I find that hard to believe myself, which is why I turn to this board for advice from those that have real world experience owning this type of build.
Dalton indicated his 120 build ran without any issues for 40k before he sold it. I'd like to know what I can reasonably expect from a 107 build before it has to be torn down and rebuilt. I don't want to race my bagger, I just want enough power to effortlessly pass traffic and keep up with a 110 CVO ultra in the mountains.
#15
10-27-2010, 08:04 AM
It had been sent to Darkhorse and built for the 120" motor.
The crank for the 107" is still stock.
Not nearly as durable as the 120" crank.
The stock crank setup can grenade long before one that's worked properly.
#16
10-27-2010, 08:33 AM
let see: I have two 107's both HQs motors and a HQs 103.
I put 24k miles on the 103 beat the chit out of the bike wheelies, rolling burnouts, street racing -- I don't condone any of this behavior but I did it -- never one problem out of the motor -- I was buying 3 / 4 rear tires a year
09RG 107 HQs RG currently have 16k miles on it not one problem -- I expect the bike with it's current motor configuration to last well into 70k miles without a rebuild--this bikes likes to wheelie due to the fat tire on the back -- the 107 will easily pull the front wheel a foot or more off the ground; if not careful you can easily snap a belt
on the other hand
I also have a 06 SG with a 131 -- overkill and major maintenance/rebuilding--I found an excellent HD shop that has experience with these kinds of motors and they do right by me Great South HD, Newnan, GA
I put 24k miles on the 103 beat the chit out of the bike wheelies, rolling burnouts, street racing -- I don't condone any of this behavior but I did it -- never one problem out of the motor -- I was buying 3 / 4 rear tires a year
09RG 107 HQs RG currently have 16k miles on it not one problem -- I expect the bike with it's current motor configuration to last well into 70k miles without a rebuild--this bikes likes to wheelie due to the fat tire on the back -- the 107 will easily pull the front wheel a foot or more off the ground; if not careful you can easily snap a belt
on the other hand
I also have a 06 SG with a 131 -- overkill and major maintenance/rebuilding--I found an excellent HD shop that has experience with these kinds of motors and they do right by me Great South HD, Newnan, GA
#17
10-27-2010, 08:43 AM
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let see: I have two 107's both HQs motors and a HQs 103.
I put 24k miles on the 103 beat the chit out of the bike wheelies, rolling burnouts, street racing -- I don't condone any of this behavior but I did it -- never one problem out of the motor -- I was buying 3 / 4 rear tires a year
09RG 107 HQs RG currently have 16k miles on it not one problem -- I expect the bike with it's current motor configuration to last well into 70k miles without a rebuild--this bikes likes to wheelie due to the fat tire on the back -- the 107 will easily pull the front wheel a foot or more off the ground; if not careful you can easily snap a belt
on the other hand
I also have a 06 SG with a 131 -- overkill and major maintenance/rebuilding--I found an excellent HD shop that has experience with these kinds of motors and they do right by me Great South HD, Newnan, GA
I put 24k miles on the 103 beat the chit out of the bike wheelies, rolling burnouts, street racing -- I don't condone any of this behavior but I did it -- never one problem out of the motor -- I was buying 3 / 4 rear tires a year
09RG 107 HQs RG currently have 16k miles on it not one problem -- I expect the bike with it's current motor configuration to last well into 70k miles without a rebuild--this bikes likes to wheelie due to the fat tire on the back -- the 107 will easily pull the front wheel a foot or more off the ground; if not careful you can easily snap a belt
on the other hand
I also have a 06 SG with a 131 -- overkill and major maintenance/rebuilding--I found an excellent HD shop that has experience with these kinds of motors and they do right by me Great South HD, Newnan, GA
#18
10-27-2010, 08:46 AM
With that build you are looking at. Lifter changes every 30-40k.
the crank could be fine, could have problems with it.
Clutch needs attention with that build. The lockup will not do the trick in the long run imo.
Otherwise you should be happy with that combo for touring. Dont be mad if it doesnt make near 100k on the motor though.
the crank could be fine, could have problems with it.
Clutch needs attention with that build. The lockup will not do the trick in the long run imo.
Otherwise you should be happy with that combo for touring. Dont be mad if it doesnt make near 100k on the motor though.
#19
10-27-2010, 08:52 AM
Road Master
So I've talked to a reputable indy a few hours from my house, and I have a build I'm thinking about doing this winter. Should end up with about 125tq/110hp. Right now my bike is basically stock so the difference should be amazing. I want to be able to pass traffic without having to plan for it. Just twist and go like on my sportbike. I also want to be able to pull away from my buddies on their stock Limiteds and CVOs when we're riding in the mountains.
For those that have upgraded to a 107, what is your impression of riding it? Any regrets? Are you satisfied with the performance? Any problems? Would you do it again?
My biggest concern is longevity, since I ride about 20k/yr. I also need it to retain good low speed manners for when I teach MSF ERCs on it. I'd like to get 100k out of the build before any major work is needed. Am I hoping for the impossible?
Any input is appreciated. I'm in the justification phase of the build now.
The build:
Bore stock cylinders
Bore stock throttle body
Stage 3 Head work on my stock heads
Forged CP Pistons
Adjustable Pushrods
Woods TW5-6 cams
Clutch lockup
D&D Boss Fat Cat 2-1
TTS Master Tune & Custom Dyno Tune
For those that have upgraded to a 107, what is your impression of riding it? Any regrets? Are you satisfied with the performance? Any problems? Would you do it again?
My biggest concern is longevity, since I ride about 20k/yr. I also need it to retain good low speed manners for when I teach MSF ERCs on it. I'd like to get 100k out of the build before any major work is needed. Am I hoping for the impossible?
Any input is appreciated. I'm in the justification phase of the build now.
The build:
Bore stock cylinders
Bore stock throttle body
Stage 3 Head work on my stock heads
Forged CP Pistons
Adjustable Pushrods
Woods TW5-6 cams
Clutch lockup
D&D Boss Fat Cat 2-1
TTS Master Tune & Custom Dyno Tune
I'm totally happy with mine. The vtwins are capable of 1 hp per cubic inch with out sacrificing anything ( reliability or longevity ). I now get better gas mileage than when stock. The difference in performance is impressive while maintaining good manners when riding easy.
I'd add an oil cooler and compression releases to your build. Upgrading the crank is your choice. It was a concern with me but I decided to keep the stock crank.
Last edited by mariner227; 10-27-2010 at 08:54 AM. Reason: bad spelling
#20
10-27-2010, 10:07 AM
I have a 107 on my glide. It's axtell cylinders and pistons s&s 585g cams port and polish heads. I had it tuned with a tts by bob at rc cycles(he's good). Mine turned out with 106/118 final tune. I have ran this build for alittle over 10,000 miles now. Runs good from sea level to the mountains.
I would also say stay with a proven combo like all the guys are saying. I haven't did anything to the stock crank and I ride a lot like Lyn. I would also say pick your cam out carefully if not going with a package cause that will effect where your power comes on at.
I know alot of guys that are running 103,107 with no issues but like everything only time will tell.
Lyn
I'm going to have to get my bike out to the atl so you can help me on my wheelies
.
I would also say stay with a proven combo like all the guys are saying. I haven't did anything to the stock crank and I ride a lot like Lyn. I would also say pick your cam out carefully if not going with a package cause that will effect where your power comes on at.
I know alot of guys that are running 103,107 with no issues but like everything only time will tell.
Lyn
I'm going to have to get my bike out to the atl so you can help me on my wheelies
.