Fuel mileage with 107" engine build
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
If it was possible to ride a 107 in exactly the same way as a stock motor, it is likely you will get similar gas mileage. But when it is all done we don't do that! I have an S&S 107 and mileage is similar to before, but plainly the bike will now accelerate quicker and with ease, as well as climb hills quicker and go faster. All these will use up a little more gas.
Frankly you shouldn't bother yourself about mileage. Get on and do it and enjoy it! Mileage will be OK, believe me.
Frankly you shouldn't bother yourself about mileage. Get on and do it and enjoy it! Mileage will be OK, believe me.
Elite HDF Member
Joined: Nov 2006
Posts: 3,647
Likes: 11
From: Stockbridge, GA (Atlanta)
+1 I just put more gas in it and keeps going
If it was possible to ride a 107 in exactly the same way as a stock motor, it is likely you will get similar gas mileage. But when it is all done we don't do that! I have an S&S 107 and mileage is similar to before, but plainly the bike will now accelerate quicker and with ease, as well as climb hills quicker and go faster. All these will use up a little more gas.
Frankly you shouldn't bother yourself about mileage. Get on and do it and enjoy it! Mileage will be OK, believe me.
Frankly you shouldn't bother yourself about mileage. Get on and do it and enjoy it! Mileage will be OK, believe me.
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,471
Likes: 2,998
From: Charleston, SC
I've enclosed several runs from my stock 07 RKC, high cleaner, converted true dual and gets 46 mpg with stock ECU. I've been working on a system that's gets great throttle response, 40mph to 130mph in 4.3 seconds, and as you can see the hp and tq, not to mention the smooth lines during accel. working on a patten so not ready to reveal it. I thought I would share the last dyno result. I want to add no internal parts added just the high flow cleaner and converted from stock to true dual and custom mufflers.
It does get to 105 in about 33 seconds going downhill though.
lp
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