Author Topic: Build thread for my 865  (Read 8728 times)

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GravyDavy

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Reply #210 on: April 02, 2021, 11:10:27 pm
Over 60 rwhp now with more to go

How does it feel to ride?  Any flat spots or steps in the power band?

Sure seems like it should have potential to have the same kind of motor feel and smooth power band, only stronger and faster.  Thanks for bringing us along!


Gremlinsteve

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Reply #211 on: April 03, 2021, 12:45:16 am
Still have some work to do
With it
But so far I’m happy with the results


Gremlinsteve

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Reply #212 on: April 03, 2021, 02:15:49 am
It’s sitting at or tight at a 60 percent improvement


Fred Gassit

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Reply #213 on: April 03, 2021, 03:21:43 pm
UK dealer Coopers recently published a dyno chart for their 865 conversion. Peak power 61 bhp, peak torque 61.5 lb-ft.
How does that compare to your measurements?

Parts added: S&S 865cc big bore kit with high lift cams, power commander, Air induction kit, HD S&S clutch kit and a hand made exhaust.
(On the same dyno a stock bike makes around 42bhp/45Nm.)


Gremlinsteve

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Reply #214 on: April 03, 2021, 03:42:45 pm
Seems to be about the same
I’ll post up better numbers and graphs soon


Blazes Boylan

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Reply #215 on: April 03, 2021, 04:50:30 pm
A fifty percent increase in hp and torque strikes me as worth all the effort.  I'm hoping to get to 50hp with the cam and high compression pistons, plus a Power Commander.  (I've already got the Stinger exhaust.)


ace.cafe

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Reply #216 on: April 03, 2021, 05:29:56 pm
UK dealer Coopers recently published a dyno chart for their 865 conversion. Peak power 61 bhp, peak torque 61.5 lb-ft.
How does that compare to your measurements?

Parts added: S&S 865cc big bore kit with high lift cams, power commander, Air induction kit, HD S&S clutch kit and a hand made exhaust.
(On the same dyno a stock bike makes around 42bhp/45Nm.)
There's plenty of meat in that torque curve.
You could shift that torque curve up about 500 rpm - 1000 rpm and really never miss anything significant down low. It would bump up that higher rpm hp really nice. Might pick up 5hp on top, just from that.
« Last Edit: April 03, 2021, 05:33:30 pm by ace.cafe »
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Gremlinsteve

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Reply #217 on: April 03, 2021, 05:34:10 pm
I agree
Moving cam timing around can and probably will work
I just don’t have the luxury of the dyno time


Gremlinsteve

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Reply #218 on: April 07, 2021, 11:00:52 pm
A dyno graph


Gremlinsteve

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Reply #219 on: April 07, 2021, 11:11:17 pm
I know those pics suck right

But the graph compares to the other shops


Gremlinsteve

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Reply #220 on: April 08, 2021, 07:38:08 pm
First ride impressions are in

It’s a animal


GravyDavy

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Reply #221 on: April 08, 2021, 07:53:48 pm
First ride impressions are in

It’s a animal
Well, that doesn't suck much at all. Congratulations!


wachuko

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Reply #222 on: April 08, 2021, 08:06:12 pm
Congratulations!!  We are going to have to update your helmet...

Ride safe!
Wachuko
'19 BMW F 850 GS Adventure
‘21 Royal Enfield Continental GT 650


Gremlinsteve

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Reply #223 on: April 08, 2021, 08:36:07 pm
Love that helmet