Milwaukee Eight Cylinder Heads

[Deye76]

"Just moved to central Florida after 32+ years in south Florida."

Awesome, much closer now. 

[FSG]

These new Exhaust Studs look to be easily installed with the end hex

[04efidynasuperglide]

mr sachs, where are you located in cfl ? 

[Ohio HD]

These new Exhaust Studs look to be easily installed with the end hex

       Was probably a time saver on the line. 

[FSG]

    Was probably a time saver on the line.

[Deye76]

mr sachs, where are you located in cfl ?

1252 Catalina Blvd.
Deltona, Fl. 32725
386-561-9044

[HD/Wrench]

pentaroof head .. is not new by any means , but as stated this is for a low rpm engine .  time will tell  as to how they work , and what can be done to improve them. Who knows they may be a great head right out the gate. after all 95% of the guys want that low end grunt any ways .. as the 6 speed trans has too many gears or maybe they just dont like to shift   

[PoorUB]

after all 95% of the guys want that low end grunt any ways .. as the 6 speed trans has too many gears or maybe they just dont like to shift 

That about covers it. I find it amazing that guys bitch that their engine will not pull long grades at 60 MPH in 6th gear. Down shift!

I remember when I had my '05 and it was a stock 88". Guys were complaining about the performance in the mountains. On the other hand I had been out in the mountains and tore them up on my stock 88", but I had discovered the lever do-hickey by my left foot helps a bunch if you take a second to move it down a notch or two.

[SixShooter14]

after all 95% of the guys want that low end grunt any ways .. as the 6 speed trans has too many gears or maybe they just dont like to shift 

That about covers it. I find it amazing that guys bitch that their engine will not pull long grades at 60 MPH in 6th gear. Down shift!

I remember when I had my '05 and it was a stock 88". Guys were complaining about the performance in the mountains. On the other hand I had been out in the mountains and tore them up on my stock 88", but I had discovered the lever do-hickey by my left foot helps a bunch if you take a second to move it down a notch or two.

It's a common problem in 4-wheeled rigs as well...folks are afraid of rpms

The emission regs force trannys to stay in as high a gear possible to save fuel. But pulling those revs higher up on the power curves sure helps it perform

[Hossamania]

Quick tranny observation, not only do people not downshift going up grades, they don't downshift going down. Had a minivan driver complaining about using so much brake coming down a mountain grade. I asked if he downshifted out of overdrive, and maybe even to second gear. He looked at me like I was talking a different language.

[rbabos]

Quick tranny observation, not only do people not downshift going up grades, they don't downshift going down. Had a minivan driver complaining about using so much brake coming down a mountain grade. I asked if he downshifted out of overdrive, and maybe even to second gear. He looked at me like I was talking a different language.

I thought you gave up trying to fix stupid?
Ron

[Hossamania]

Quick tranny observation, not only do people not downshift going up grades, they don't downshift going down. Had a minivan driver complaining about using so much brake coming down a mountain grade. I asked if he downshifted out of overdrive, and maybe even to second gear. He looked at me like I was talking a different language.

I thought you gave up trying to fix stupid?
Ron

This was years ago. Although, some habits are hard to break, I still occasionally offer advice, but it happens much less now.

[moscooter]

Quick tranny observation, not only do people not downshift going up grades, they don't downshift going down. Had a minivan driver complaining about using so much brake coming down a mountain grade. I asked if he downshifted out of overdrive, and maybe even to second gear. He looked at me like I was talking a different language.

That minivan likely had disc brakes on the front and drums on the back or maybe all disc.  Had he (drums all around) or a heavier van/truck,  he would learn to use the transmission lower gears in a pretty quick time.

Once you experience genuine brake "fade",  you don't soon forget.

[FLHRI_2004]

. . . Once you experience genuine brake "fade",  you don't soon forget.

Yeah, been there, done that ('66 Chevelle 6 cyl car converted to a 283, four small drums). 

[PoorUB]

Quick tranny observation, not only do people not downshift going up grades, they don't downshift going down. Had a minivan driver complaining about using so much brake coming down a mountain grade. I asked if he downshifted out of overdrive, and maybe even to second gear. He looked at me like I was talking a different language.

Gonenorth and I ride out west every year and end up following bikes more than we like. It seems like everyone of them is dragging the brakes going down grades and we will run one gear lower and rarely touch the brakes. I swear I have followed riders for miles and the brakes are on just about the whole time, I can even smell the hot brake pads following.

[Templer]

Have used reverse going down a grade and having a brake failure WILL cause a blessed release in your under wear failure !!

[BVHOG]

Has anyone considered the increased cost of modifying these heads?  8 valves, 8 ports 8 springs, seals etc. Gonna cost a bunch more for sure.

[TorQuePimp]

Has anyone considered the increased cost of modifying these heads?  8 valves, 8 ports 8 springs, seals etc. Gonna cost a bunch more for sure.

Not sure every build will need springs but yeah....8 valves is going to be double the coin

[SP33DY]

Has anyone considered the increased cost of modifying these heads?  8 valves, 8 ports 8 springs, seals etc. Gonna cost a bunch more for sure.

Based on my experiences porting 4-valve automotive race heads, the valves, seats, guides, and springs aren't terribly expensive unless you use Titanium valves and Beryllium seats.

(Health warning, Beryllium is highly carcinogenic, and I am not recommending it, but I did use it back when "it seemed like a good idea" for seats for Titanium valves.) 

The valves and springs are tiny when compared to the hardware we used in typical Harley performance builds on the earlier engines.

The porting time isn't much more either, partly because the bowls are so small, and partly because the 4 valve heads I've worked on didn't need a lot of material to be removed to get good flow.  The automotive heads I worked on needed to be set up for mechanical injection with methanol fuel so welding and reshaping work at the port entry was an additional factor, but hopefully the new M-8 heads won't need a lot of attention in that area.

[motolocopat]

I'm guessing that a little cleanup of ports, matching of mating surfaces and a multi-angle valve job will go a long ways.

[SP33DY]

I'm guessing that a little cleanup of ports, matching of mating surfaces and a multi-angle valve job will go a long ways.

That pretty much sums it up. The valve seat angles and the throat / min. csa are the tricky part.

[1FSTRK]

Anyone know the valve sizes, stem diameter, spring sizes,etc?
In the pictures they look like the 7mm stem sportster valves and springs.

[Durwood]

Anyone know the valve sizes, stem diameter, spring sizes,etc?
In the pictures they look like the 7mm stem sportster valves and springs.

Intake valves are 39.8mm and Exhaust valves are 32mm.

Stem diameter and spring sizes I don't know.

[1FSTRK]

Anyone know the valve sizes, stem diameter, spring sizes,etc?
In the pictures they look like the 7mm stem sportster valves and springs.

Intake valves are 39.8mm and Exhaust valves are 32mm.

Stem diameter and spring sizes I don't know.

Thanks
Those are not as big as Vrod performance valves.

[Don D]

51 and 54% larger valve area respectively as compared to an oem TC head.