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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Well, you have the exhaust at least. Your best bet for 125/125 within your budget is either a 110 with head work or a 107 with headwork. Personally, 125/125 from a 107 is easily do-able, but you're going to be running on the edge of reliability. Not that it's not "reliable" perse, but you're at 1.16 HP per CI with a 107.
Talk to a forum sponsor or find a reputable local builder. Where you live?
Edit.... I see AZ.
I am running a 107 with 125hp/tq130 and it's been really reliable. I just hit the 20k mark and still going strong. I average 15 to 20k a year. On you tube under taps 1021 the bike is being documented. Now if could do it again I would go T124 with either FM or star racing doing the head work and cams .
Fair question, budget is no more than 5k and I already have a D&D Fatcat. For power, I would like to attain 125/125, as a minimum and keep the rideability and reliability.
A 110" drop-on cylinder/piston kit with a a good set of heads, cam to suit your needs, and t/body, easily shows 125/125+.
Currently building one for a local client.
Scott
I am running a 107 with 125hp/tq130 and it's been really reliable. I just hit the 20k mark and still going strong. I average 15 to 20k a year. On you tube under taps 1021 the bike is being documented. Now if could do it again I would go T124 with either FM or star racing doing the head work and cams .
I didn't say they aren't reliable, just that you're getting to the point of squeezing a lotta juice from the lemon. I had an all bore 107 that did 121 HP and 131 TQ that woulda done a bit better if I had a bigger than 50mm TB on it that I put on basically 30K in 3 years and the motor ran strong. But you start getting into hot starts, needing bigger starters, and all of that with a higher CCP bike. My CCP was 203-205 and if I were to do it over, I'd just build a big dumb 117 or 124 and aim for CCP around 195 and HP/TQ around 1.1 per CI. Just easier to live with and more reliable.
I am running a 107 with 125hp/tq130 and it's been really reliable. I just hit the 20k mark and still going strong. I average 15 to 20k a year. On you tube under taps 1021 the bike is being documented. Now if could do it again I would go T124 with either FM or star racing doing the head work and cams .
Post the dyno sheet. 130tq outta 107ci for a common street kit which is what you have.....Im starting to think the rule here should be if no sheet....no claims. I know forums and YouTube etc are a hotbed for exaggeration so lets be responsible enough to post what is claimed. Remember a forum isnt about bloviating to boost your own image but to give real advice and experience to help others consider their options. Not trying to be difficult so please dont anyone respond aggressively and hurt my feelings.
Post the dyno sheet. 130tq outta 107ci for a common street kit which is what you have.....I’m starting to think the rule here should be if no sheet....no claims. I know forums and YouTube etc are a hotbed for exaggeration so let’s be responsible enough to post what is claimed. Remember a forum isn’t about bloviating to boost your own image but to give real advice and experience to help others consider their options. Not trying to be difficult so please don’t anyone respond aggressively and hurt my feelings.
I can post mine, although you weren't quoting mine. 130 TQ isn't hard to do (not easy either, just takes some good heads, exhaust, throttle body).
Granted, I can't find the copy that is in SAE. This one is in STD. But the numbers are in uncorrected on this one too. So about a 3-5 percent lower for uncorrected, but in STD, about a 3-5 percent increase as well. So a wash. My other run by the tuner in SAE shows 131 TQ and 121 HP. No number inflation here either as he is one of the most legit and best tuners out there.
And I respect your asking for the sheet and know you've had one of the nicest built 110's when they first came out.
I can post mine, although you weren't quoting mine. 130 TQ isn't hard to do (not easy either, just takes some good heads, exhaust, throttle body).
Granted, I can't find the copy that is in SAE. This one is in STD. But the numbers are in uncorrected on this one too. So about a 3-5 percent lower for uncorrected, but in STD, about a 3-5 percent increase as well. So a wash. My other run by the tuner in SAE shows 131 TQ and 121 HP. No number inflation here either as he is one of the most legit and best tuners out there.
And I respect your asking for the sheet and know you've had one of the nicest built 110's when they first came out.
Wow Im confused, help me understand. I see 2 runs both with STD 104 and STD 105 then uncorrected beside it? Uncorrected would be 100 not 104/5. Then you say the SAE which is not shown has higher hp than this sheet by 5hp. These runs say STD 104/5, how can it also be uncorrected
Wow Im confused, help me understand. I see 2 runs both with STD 104 and STD 105 then uncorrected beside it? Uncorrected would be 100 not 104/5. Then you say the SAE which is not shown has higher hp than this sheet by 5hp. These runs say STD 104/5, how can it also be uncorrected
Well, I can mail you the original SAE dyno if youd like. Or you can talk to BVBob, one of the best tuners out there. 131/121 when a cam swap and new muffler on the re-tune after this. Corrected. SAE. 130 is not insanely difficult on a 107 street motor. Not easy easy either. As I said.
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