So how do you like these cam specs

[BVHOG]

Going to be a learning curve with the new bikes for sure.

[Princess Butt]

I'm guessing about 6 to 8 months for the first aftermarket cams to show up. They certainly won't need the duration of the two valve heads. With 4 valves, they can open them less with shorter duration and still move a lot of air.

[biggzed]

Much lower lift and timing numbers than we are used to on TC's for sure. Is that $189.95 price on the left of the page a cam price? That would be nice.

Zach


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[harleytuner]

I'm guessing about 6 to 8 months for the first aftermarket cams to show up. They certainly won't need the duration of the two valve heads. With 4 valves, they can open them less with shorter duration and still move a lot of air.

I know of one aftermarket that will have his prototype in hand Friday. 

[Prostock]

ATFC?

[CowboyTutt]

I saw that too!  Misprint??  -Tutt 

[Piston Broke]

Why @ .050 instead of .053 like everyone else?

[sfmichael]

Why @ .050 instead of .053 like everyone else?

Automotive companies have used .050 forever...imo it's the industry standard...just a guess...

[KE5RBD]

Bikes seem to have lots of torque.  Too smooth idle, but don't think that will change much even with the performance cams.  I attached all the cams listed on the above sheets in an excel spreadsheet that has a little more info.  Also included the Rushmore and stock pre Rushmore cam for comparison. Check out the overlap numbers. 

[Piston Broke]

Automotive companies have used .050 forever...imo it's the industry standard...just a guess...

I don't suppose it makes that much of a difference for comparisons, but it's strange that they do not adopt the Harley market standard of .053".

Who established that, Jerry Branch was it? Just about everyone but Leinweber uses it.

And just out of interest ... why .053 in the first place?

Thanks.

[wfolarry]

It was Sifton. I don't remember how the .053 came to be. I think it was a percentage. It's been a while.

[PoorUB]

-21 degrees of overlap?! Curious to see how this engine pulls at high RPM with no overlap! Looks like a great EPA cam.

[happyman]

where do  HQ measure  from. seems they did things a bit different too

[Roadraceking]

Monster lift on a 4v out of that c cam.

[04 SE Deuce]

A few years back Ducati reduced the overlap to 11 degrees on their twins,  for all but the full-on sport bike (Panigale).  Now they have variable cam timing that rolls the cams back even more at lower rpms...works well.

Shouldn't be seeing any fog/reversion in the intake tract on these new engines.

Having a single cam might make variable cam timing easier to do but they have no way to adjust only the intake or exhaust,  or intake and exhaust in different directions.

[PoorUB]

I was surprised with the cams in the Rushmore Twin Cooled with the 12 degrees overlap, then they dump this stock cam with -21 degrees overlap. Seems like a step backwards to me. Go low end torque, but it has to die off at high RPM.

[04 SE Deuce]

Emissions plus the 4 valve head has changed the game some.

[06roadglide]

They were saying that the 4 valve pulls about 2-3 bikes on the previous models from 0-60 but about 1-2 0-80.  Must be the top end running out of steam with that over lap letting the Rushmore's reel it back in

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[CowboyTutt]

Monster lift on a 4v out of that c cam.

That's exactly what I thought when I saw that!  This engine might have some real potential!      -Tutt 

[mp]

Well, if they come out with the air-cooled version in a new rubber tri-mount cruiser with everything I want in a backup bike to my FXRS......  I'll definitely be seeing what Andrews comes up with in a cam for the M8.

[Don D]

This motor will have some very different requirements than what we are used to. Physical limits plus motor demand vs flow.
We need some heads to get the ball rolling.

[happyman]

anyone know if the heads have dividers between the ports or is there a pic by chance?
thanks

[Bigbluff]

anyone know if the heads have dividers between the ports or is there a pic by chance?
thanks

Here's a Cycle World article that has a few pics in it. Not much but it's something:

http://www.cycleworld.com/harley-davidson-motorcycles-new-milwaukee-eight-big-twin-engine

[JamesButler]

Yeah, but will it retrofit into an FXR? 

[Masterblaster]

wondering how much more tq the tq cam adds

[harleytuner]

wondering how much more tq the tq cam adds

Here's the results from the stock, both stage II kits and the  stage III kit. 
http://www.hdforums.com/forum/the-dyno-room/1133365-milwaukee-8-testing-14.html

[Tommy D]

wondering how much more tq the tq cam adds

Here's the results from the stock, both stage II kits and the  stage III kit. 
http://www.hdforums.com/forum/the-dyno-room/1133365-milwaukee-8-testing-14.html

Impressive in two ways... Results, time & effort to those involved

[harleytuner]

wondering how much more tq the tq cam adds

Here's the results from the stock, both stage II kits and the  stage III kit. 
http://www.hdforums.com/forum/the-dyno-room/1133365-milwaukee-8-testing-14.html

Impressive in two ways... Results, time & effort to those involved

Impressive indeed. This is just part of what they've been working on.  Some cool stuff coming up for sure.