Author Topic: 8 valve Harley? (Read 30285 times)

scura283 · « **on:** July 26, 2016, 04:02:13 PM »

http://www.revzilla.com/common-tread/exclusive-leaked-pictures-of-the-new-harley-107-milwaukee-eight-engine
Don't know if this creditable or not, but a lot of information.

Madtownguzzi · « **Reply #1 on:** July 26, 2016, 04:17:44 PM »

Harley had an eight valve way back in 1916.

http://www.fredlangerestorations.com/1916-8-valve_motor.html

Tom · « **Reply #2 on:** July 26, 2016, 04:43:46 PM »

$16K for the engine.

Cool Runnings · « **Reply #3 on:** July 26, 2016, 04:59:47 PM »

Will they be as quick as the 8V Norge? Just don't hit the corners too hard.

Wildguzzi.com · « **Reply #3 on:** July 26, 2016, 04:59:47 PM »

Kev m · « **Reply #4 on:** July 26, 2016, 05:36:23 PM »

Interesting, but a Harley (other than the VRod/Street) with VALVE ADJUSTMENTS? Hmmmm...

LowRyter · « **Reply #5 on:** July 26, 2016, 05:43:17 PM »

looks like a Honda

twhitaker · « **Reply #6 on:** July 26, 2016, 07:40:43 PM »

Quote from: Kev m on July 26, 2016, 05:36:23 PM

Interesting, but a Harley (other than the VRod/Street) with VALVE ADJUSTMENTS? Hmmmm...

Almost as blasphemous as putting the oil filter inside the engine. What could go wrong?

leafman60 · « **Reply #7 on:** July 26, 2016, 08:34:28 PM »

Feuling designed and sold 8-valve H-D heads back in the 90's. They did not gain widespread use then but a newly designed engine just may be a hit.

Sasquatch Jim · « **Reply #8 on:** July 27, 2016, 12:14:46 AM »

whee.

Perazzimx14 · « **Reply #9 on:** July 27, 2016, 06:20:52 AM »

Hope they didn't get pointers from Guzzi.

leafman60 · « **Reply #10 on:** July 27, 2016, 06:47:17 AM »

LOL

It's another landmark change to a "new" motor for The Motor Company if this is correct.

Horsepower of this engine should show a significant leap. A 114 and a 131 is supposedly in the offing for later.

I will be interested to see the specs. Typically, two big valves pass plenty of flow for a slow-turning huge twin. But, a 4-Valve head will allow better flow and it will allow a more compact combustion chamber.

The pictures shown reveal the line up of the pushrod tubes with a central single cam as was the case with the Evo and prior motors. Many people thought the Twin Cam engines brought unnecessary complication with the two chains and drive plate to turn the two cams.

H-D is already improving suspension and drivetrain. These changes along with a new, more powerful engine, will put them even further ahead of the pack in their market.

Exciting news in the Big Twin world.

In the mean time... I will soldier on with my Twin Cam Super Glide with its new bigger bore and 204 cams. It pulls like a freight train.

Cool Runnings · « **Reply #11 on:** July 27, 2016, 07:56:22 AM »

HP increase, 65 to 75.

Bonafide Bob · « **Reply #12 on:** July 27, 2016, 08:30:27 AM »

<<In the mean time... I will soldier on with my Twin Cam Super Glide with its new bigger bore and 204 cams. It pulls like a freight train.>>

Me too, my 95" Dyna with head work and 204 cams is still fun to ride, 100,000 miles and still going strong.
Bob

Kev m · « **Reply #13 on:** July 27, 2016, 09:16:43 AM »

Quote from: Cool Runnings on July 27, 2016, 07:56:22 AM

HP increase, 65 to 75.

Not to spoil the sarcastic rhetoric but a 1996 1340cc EVO made 60 rwhp stock, and a 2016 1200cc EVO Sportster (the new CX) makes about 70 rwhp stock.

We all know that Harleys aren't about peak hp, but that 2016 CX is a pretty nice balance of hp and torque.

I would imagine these 4V big twins would make respectable numbers, again for what they are.

cwiseman · « **Reply #14 on:** July 27, 2016, 09:59:44 AM »

I don't mention this too often but I have a 1986 FLH with a big bore 88 cubic inch EVO, Edelbrock heads, cam, carb, ect....
It makes 82 horse and 88 lb ft of torque to the ground. It's damned strong and pulls the front wheel slightly every time you shift into 2nd and holds it till shifting into 3rd. I don't ride it often cause it handles like a sofa that fell out of the back of a pickup. But she's fun!

When I comes to HD I'm a EVO lover since they wind up better than a TC

Kev m · « **Reply #15 on:** July 27, 2016, 10:13:58 AM »

Quote from: cwiseman on July 27, 2016, 09:59:44 AM

I don't mention this too often but I have a 1986 FLH with a big bore 88 cubic inch EVO, Edelbrock heads, cam, carb, ect....
It makes 82 horse and 88 lb ft of torque to the ground. It's damned strong and pulls the front wheel slightly every time you shift into 2nd and holds it till shifting into 3rd. I don't ride it often cause it handles like a sofa that fell out of the back of a pickup. But she's fun!

When I comes to HD I'm a EVO lover since they wind up better than a TC

wymple · « **Reply #16 on:** July 27, 2016, 10:18:15 AM »

My oldest son bought a new Ultra Classic with liquid cooled heads. It pulls hard, and is smooth right off idle. He traded in a nice low miles K bike for it. He runs thru corners, bags, trunk & all, as fast as I care to follow. I noticed in the comments of the article some people knocking the big Indians. My nephew has one and it's obvious that those who throw BS like that around have never been on one. Some people just like to make stink, I guess. I'm not a Harley guy and will never be, that doesn't mean they're all junk. Come to think of it, his 1200 Sporty has been around several years now, I don't remember him having a single repair on that, either.

Rough Edge racing · « **Reply #17 on:** July 27, 2016, 10:45:51 AM »

Those who have never ridden a modified high HP rubber mount Harley are missing an unique experience...

Cool Runnings · « **Reply #18 on:** July 27, 2016, 11:48:38 AM »

Quote from: Rough Edge racing on July 27, 2016, 10:45:51 AM

Those who have never ridden a modified high HP rubber mount Harley are missing an unique experience...

Until they mount a BIG BLOCK 8V Guzzi.

Rough Edge racing · « **Reply #19 on:** July 27, 2016, 12:42:05 PM »

Quote from: oldbike54 on July 27, 2016, 12:31:51 PM

Isn't a modern 4 valve head design with central or dual spark plugs a better proposition when dealing with emission regs ?

Dusty

Yes, the smaller volume shallow combustion chamber allows higher compression without detonation and a more complete burn ...Dual plugs may be necessary on large bore engines.

scura283 · « **Reply #20 on:** August 23, 2016, 12:55:26 PM »

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

Tom · « **Reply #21 on:** August 23, 2016, 01:05:08 PM »

http://allenmuseum.com/gallery/main/Harley_Davidson_1926_8_valve_replica.htm "What's old is new again."

Tom · « **Reply #22 on:** August 23, 2016, 01:11:01 PM »

Scura...fixed it for you.

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

Cool Runnings · « **Reply #23 on:** August 23, 2016, 01:45:22 PM »

Will they sounds like Harley's? If they don't sales will go sour.

bad Chad · « **Reply #24 on:** August 23, 2016, 02:38:00 PM »

It sounds like every other HD, there's a recording of it on youtube.

The article I read, said the valve architecture is very similar to the 8v big block Guzzi!

Cool Runnings · « **Reply #25 on:** August 23, 2016, 02:55:38 PM »

Milwaukee Eight from Harley-Davidson

Cool Runnings · « **Reply #26 on:** August 23, 2016, 03:01:50 PM »

The More Powerful, All-New Milwaukee-Eight Engine | Harley-Davidson

bad Chad · « **Reply #27 on:** August 23, 2016, 03:14:14 PM »

At least they new where to look for ideas.

Mark Cook of Motorcyclist wrote, "There are many clever design details in the valve train alone, which vaguely resembles a four-valve Moto Guzzi�s in the sense of there being a single pushrod for each pair of intake and exhaust valves per cylinder reaching from the cam case up to a robust-looking rocker-arm assembly that operates each valve with a separate arm."

As the saying goes, "If you can't beat-em, join-em"

bad Chad · « **Reply #28 on:** August 23, 2016, 03:20:10 PM »

And they went with a counter balancer! Please, that was one of the cooler things I would give HD and Guzzi credit for, not wussying out and caving to timed.

But I do understand, as articles state, they are after conquest sales.

Cool Runnings · « **Reply #29 on:** August 23, 2016, 03:28:51 PM »

The 2017 Ultra Classic will have a Milwaukee-Eight™ 107ci with 111.4 ft-lb Engine Torque.

http://www.harley-davidson.com/content/h-d/en_US/home/motorcycles/tools/compare-bikes.html

News:

Author Topic: 8 valve Harley? (Read 30285 times)

Wildguzzi.com

Rough Edge racing

Rough Edge racing