H-D tire shredder - why so LOW HP?
#21
01-11-2019, 07:47 PM
Stellar HDF Member
3319 W Sample StSouth Bend, Indiana
Get Directions
Call (574) 233-0642
Call Flora racing Heads and talk to Jeff Flora. He has built very powerful Harley racing motors and will give you the information you need.
Call Flora racing Heads and talk to Jeff Flora. He has built very powerful Harley racing motors and will give you the information you need.
#22
01-11-2019, 09:58 PM
Seasoned HDF Member
Join Date: Aug 2012
Location: Whiskey Falls, Texas
Posts: 14,573
Received 24,445 Likes
on
5,921 Posts
Most don't want a racing motor, they want lots of power and torque all the way thru, all while keeping some semblance of reliability....
My Tire Shredder Kit on my bagger was Dyno Tuned and put up around 110 HP and 120 lbs of Torque....that's not drag strip quality, but it's a HELL of a lot more HP than a stock bagger, and I still have my factory warranty...I work on my own stuff, but for the guys who don't that's a big deal to put some bite in your motor and still be under warranty...
My Tire Shredder Kit on my bagger was Dyno Tuned and put up around 110 HP and 120 lbs of Torque....that's not drag strip quality, but it's a HELL of a lot more HP than a stock bagger, and I still have my factory warranty...I work on my own stuff, but for the guys who don't that's a big deal to put some bite in your motor and still be under warranty...
#23
01-11-2019, 10:13 PM
Seasoned HDF Member
#24
01-11-2019, 10:47 PM
#25
01-12-2019, 08:16 AM
Grand HDF Member
#27
01-12-2019, 12:42 PM
Seasoned HDF Member
The liter and open class inline 4's do fairly well in the torque department. My brother's ZX-14R (stock) has at least 100 ft-lbs from 6,000 to 10,000 RPMs. Roll-on power is incredible.
Last edited by LQQK_OUT; 01-12-2019 at 12:44 PM.
#28
01-13-2019, 12:08 PM
Outstanding HDF Member
Try that with a rice inline 4, you'd stall it in second gear
I can post the dyno sheets from my 88TC with S&S 509's or the Stage 4 103 ... all sorts of torque
Then I can post the sheets for my Kawi 1200's... great HP, not so great torque, but at 300 pounds lighter you can sacrifice torque for HP
A HD V Twin torque curve is near flat.... you get huge torque from just off idle and a good way across the power band , where I have to wind my C14 up to over 6000 rpm to get 100 ft/lbs of torque out of it... and at 6000 rpm's in any gear you are not worried about torque, you are worried about hanging on as you are closing in on 150+HP
#29
01-13-2019, 04:27 PM
Grand HDF Member
A Harley will pull a tree stump out from a standing stop in 3rd gear without stalling that is torque
Try that with a rice inline 4, you'd stall it in second gear
I can post the dyno sheets from my 88TC with S&S 509's or the Stage 4 103 ... all sorts of torque
Then I can post the sheets for my Kawi 1200's... great HP, not so great torque, but at 300 pounds lighter you can sacrifice torque for HP
A HD V Twin torque curve is near flat.... you get huge torque from just off idle and a good way across the power band , where I have to wind my C14 up to over 6000 rpm to get 100 ft/lbs of torque out of it... and at 6000 rpm's in any gear you are not worried about torque, you are worried about hanging on as you are closing in on 150+HP
Try that with a rice inline 4, you'd stall it in second gear
I can post the dyno sheets from my 88TC with S&S 509's or the Stage 4 103 ... all sorts of torque
Then I can post the sheets for my Kawi 1200's... great HP, not so great torque, but at 300 pounds lighter you can sacrifice torque for HP
A HD V Twin torque curve is near flat.... you get huge torque from just off idle and a good way across the power band , where I have to wind my C14 up to over 6000 rpm to get 100 ft/lbs of torque out of it... and at 6000 rpm's in any gear you are not worried about torque, you are worried about hanging on as you are closing in on 150+HP
#30
01-13-2019, 04:29 PM
Grand HDF Member
A HD V Twin torque curve is near flat.... you get huge torque from just off idle and a good way across the power band , where I have to wind my C14 up to over 6000 rpm to get 100 ft/lbs of torque out of it... and at 6000 rpm's in any gear you are not worried about torque, you are worried about hanging on as you are closing in on 150+HP
again, what is your point?