M8 Dyno Numbers
Road Captain
Joined: Jul 2020
Posts: 592
Likes: 482
From: SE PA
I would think so. A D&D would likely add a couple more and smooth out the curve but I don’t do 2 into 1s. It’s ridiculously responsive at every rpm point and delivered exactly what I wanted. Not a dead spot or lag present. I really think more cam might be even better because it’s all on as soon as you let the clutch out with this 650lb bike.
What cam would you say would suit it better?
I would think so. A D&D would likely add a couple more and smooth out the curve but I dont do 2 into 1s. Its ridiculously responsive at every rpm point and delivered exactly what I wanted. Not a dead spot or lag present. I really think more cam might be even better because its all on as soon as you let the clutch out with this 650lb bike.
Road Captain
Joined: Jul 2020
Posts: 592
Likes: 482
From: SE PA
With the RS552 having a 29 degree intake valve close, I think something with similar valve events and a mid 30s closing point might be the ticket. Bringing on the power a couple hundred RPM later is what I’m thinking. Just speculation though.
Seasoned HDF Member
Joined: Feb 2009
Posts: 5,642
Likes: 1,985
From: Cleveland Zoo
Road Warrior
Joined: Jul 2011
Posts: 1,327
Likes: 333
From: Central TX
Those are some nice power curves with the 485. I wonder how that cam would work in a 128 with stock heads?
Road Captain
Joined: Sep 2019
Posts: 689
Likes: 339
From: Dayton OH
19 Sport Glide 114
19 Sport Glide 114 (old HD stage 3)
SE Ventilator extreme AC
SE 64mm TB
Star F35A cam, Kibblewhite springs
HPI 6.2 injectors
Power Vision
S&S Superstreet 2-1 decatted
Red lines SE tuner, SE 498 cam, with catalyst
Last edited by VernDiesel; Jun 6, 2023 at 10:02 PM.
Supporter
Joined: Mar 2020
Posts: 1,009
Likes: 598
From: Northeast Louisiana
That F35 is fixing to start a fire in the world of cams and absolutely a beast!
👍🏻👍🏻👍🏻👍🏻👍🏻
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Road Captain
Joined: Sep 2019
Posts: 689
Likes: 339
From: Dayton OH
Thanks. The F35A is a great max effort for smaller displacement cam IMO. Will work extremely well in a more horsepower oriented 117, 119, 122. George says "traps more air than any cam that fits a stock engine." Needs springs either his PSI or Kibblewhites so its not a drop in like a 30 30 or others but I haven't seen this horsepower out of other 114s. This motor is stock bottom end stock valves unported heads but cut 15 thou plus Cometic gasket to give it an extra 1/2 point of compression. For me if I am buying big bore slugs n jugs I am also doing the crank and heads and a pipe. This adds up to a lot more coin. So from where I was this was a good budget build compared to going the big bore route. This bike also benefits from shorter gearing which the F35A and shorter stroke seems to really like. Won't be the fastest bike on the street but it does power wheelie the first three gears.
Supporter
Joined: Mar 2020
Posts: 1,009
Likes: 598
From: Northeast Louisiana
132tq/128hp with Star Racing F35 stage 2 117"
Watch this Blockhead video of dyno as well as them riding it.
This cam or possibly the 3/4 cam by Star Racing is my top choice right now for my upgrade to SE Stage IV 128"
It also has the stock base circle that "allows" you to run the stock and or solid pushrods, "RELIABILITY"!👍🏻
This cam or possibly the 3/4 cam by Star Racing is my top choice right now for my upgrade to SE Stage IV 128"
It also has the stock base circle that "allows" you to run the stock and or solid pushrods, "RELIABILITY"!👍🏻
