Milwaukee Eight Cylinder Heads

[SP33DY]

Today I tried to order a set of Milwaukee Eight Cylinder Heads at my local Harley shop. I want to get them on the flowbench and see what can be done with them. They took my order this morning and all was well...

They called this afternoon and told me I can have store credit or a refund. The heads are "protected" and they can't sell them to me!

What the @#$& is that all about?

[rbabos]

Today I tried to order a set of Milwaukee Eight Cylinder Heads at my local Harley shop. I want to get them on the flowbench and see what can be done with them. They took my order this morning and all was well...

They called this afternoon and told me I can have store credit or a refund. The heads are "protected" and they can't sell them to me!

What the @#$& is that all about?
Looks like you need to buy the bike first to get the heads. Compensator same deal. They won't sell it.
Ron

[04 SE Deuce]

I'm thinking they'll be sell'n Screamin Beagle heads soon and you'll be able to pick up a set take-offs at a nice discount.

[TorQuePimp]

Looks like people might be doing some welding

[masstch]

Man, can you imagine the bidding war for the first set of take offs to hit eBay?


Sent from my iPhone using Tapatalk

[masstch]

The REAL question is: can they be retrofitted to my TwinCam??


Sent from my iPhone using Tapatalk

[Just Nick]

The REAL question is: can they be retrofitted to my TwinCam??

No Not at all no way


And the new compensator is also a protected part not for sale

[CowboyTutt]

That's my take away too.  Stick to TC stuff.  You can run even or easily surpass the M8 with current TC technology.  No need for this 4 valve stuff.  Regards,  -Tutt 

[One4Tone]

I hear some dealers are offering 20% off SE parts...might be a good time to hop up a twinke

[glens]

I'll guess that all "mate" engine parts will be for warranty replacement only with the originals returned for complete autopsy, for a good year or so.

Anybody look close at the paperwork on their shiny new '17 touring bike?  Maybe there's a "license agreement" that you'll not disassemble, poke, or prod under penalty of law

[Don D]

The REAL question is: can they be retrofitted to my TwinCam??

Nothing is impossible but consider the bolt pattern wrong, spigot bore wrong, cooling passages present, intake and electronics tbd, pushrod pockets wrong...
And on...

[BVHOG]

The REAL question is: can they be retrofitted to my TwinCam??

Nothing is impossible but consider the bolt pattern wrong, spigot bore wrong, cooling passages present, intake and electronics tbd, pushrod pockets wrong...
And on...

How bout a two valve head for the new motor?

[TorQuePimp]

The REAL question is: can they be retrofitted to my TwinCam??

Nothing is impossible but consider the bolt pattern wrong, spigot bore wrong, cooling passages present, intake and electronics tbd, pushrod pockets wrong...
And on...

How bout a two valve head for the new motor?

If s@s were smart they would be doing just that

[CowboyTutt]

It seems like that would still require a lot of engineering to run two plugs, the knock sensors, accompanying rocker arms and water or oil cooling passages etc for no benefit compared to the 4 valve head?  I think just sending your original 4 valve heads for some improvements is all that is needed. 

If S&S found a way to make a "Super Stock" 4 valve head, that would be interesting. 

Lots of companies with great experience in modifying 4 valve heads who haven't so far done Harleys.  Might be a good time for them to jump in. 

Cheers,

-Tutt

[rigidthumper]

I'm bettin John Sachs has some ideas[emoji6]

[No Cents]

I'm bettin John Sachs has some ideas[emoji6]

   

[Durwood]

 I think these new heads have a ton of potential, and in time will shine.

[Templer]

Was there not a 4 valve head awhile back that fitted to a EVO? Fueling,Quantum,Rivera I think. What happened to those and could the ideas from the M-8 be used/based on those? I have been told of Evos with TC top end, so why not TC Hemi heads? Same design on the rockers but maybe not Euro 4/Ca legal. WHO would care? Are not the 4 valve design best at rpms better then 5500? What would a EVO/Hemi 4 motor do to the M-8 114 side by side??? V-Rod ver stock M-8 114 

[TorQuePimp]

Wait till you get a set in your hands

[Matt C]

The REAL question is: can they be retrofitted to my TwinCam??

Nothing is impossible but consider the bolt pattern wrong, spigot bore wrong, cooling passages present, intake and electronics tbd, pushrod pockets wrong...
And on...

How bout a two valve head for the new motor?

Why would you want to do that?

[rbabos]

The REAL question is: can they be retrofitted to my TwinCam??

Nothing is impossible but consider the bolt pattern wrong, spigot bore wrong, cooling passages present, intake and electronics tbd, pushrod pockets wrong...
And on...

How bout a two valve head for the new motor?

Why would you want to do that?

Wondering the same. Give them something better and they want to fk it all up and go backwards.
Ron

[Matt C]

I'm bettin John Sachs has some ideas[emoji6]

4 valve heads are nothing new, Honda (and others) have been using them for quite a while.
One of the differences is 'swirl', has become 'tumble'.

There are countless advantages to 4 valve over 2. More flow with less lift being a biggie. Lighter
components, better cylinder fill, ports are smaller (higher velocity) and on and on...

This will be a game-changer. Hopefully the motors will be able to hold up to these things...

[rbabos]

https://www.youtube.com/watch?v=TfEZyCccKTs
https://www.youtube.com/watch?v=hedv8RGcvMQ
8 valve engines were like out forever, both Indian and Harley. History repeats itself.
Ron

[Bigbluff]

Someone mentioned that variable valve timing won't be possible with this single cam...and that is true. But it wasn't possible with the TwinCam either, at least not in the way the two camshafts were implemented on the TC.

Each camshaft on the TC controlled both an intake and an exhaust valve on one cylinder each. I suppose the cam timing could be made variable between them, but to what end? Nothing to be gained by varying the timing between the two cylinders.

If the camshafts were to have been aranged so that one ran above the other in the crankcase, and then one camshaft (upper) controlled only the intake valves on both cylinders and the other camshaft (lower) controlled only the exhaust valves, on each cylinder, then an arrangement of the chain linking them could have been made with an actuator to vary the timing between those two camshafts. But I suspect that engine height would become a problem in that configuration.

Fun to think about though!

[jsachs1]

Not a lot of magic in a 4-valve head in a low rpm motor.
We make more power with the pro-mod bikes using 2 valves.
I did some Victory 4 valve OHC heads, with S&S parts. They did ok, about on a par with their 2 valvers. I have some dyno sheets I can post, if I can find them.
Just moved to central Florida after 32+ years in south Florida.
John