Great info Randy! Are there any additional considerations when warming up with steel vs aluminum on the sleeve?

The flywheels obviously had shift before welded. Plugs are too long and too heavy

Can you make it fit in an fxr please 🙏

Ok ,Randy how come you can't use the m8 crankpin and turn the ends down to press into the twin cam flywheels so you have a flange that butts up against the flywheel and then weld it or have 2 flat head screws tap in to the flywheel crank pin line thread with a 3/8 or 7/16ths screw or smaller have you tryed that for retention of pin n flywheels m8 pin is stronger and rod bearing is better also rods are better, build a motor around that arcatexure or scrap the HD crank and make a 1 peice crank beefyer in every way out of Superior material and use a rod from a Chevy motor or nascar mo with a automotive bearing the market it there

Such happy cylinders

Looks to me like someone’s been doing a few burnouts on their bike

Questions: What compression? What camshaft? Any chamber work? Very nice torque curve and peak HP!

Remember when riding motorcycles was fun?

Hi I'm looking for 23955-06B refurbished

hard to tell. are the valve seals present during measuring? larry

Still can't get the Briggs and Straton right. Give HD a hundred years and you would think they are still at the drawing table. Look I love my bike. I just wish they would put aircraft quality into their aircraft engines.

Harley wants the damn vibration in the bikes! Their customers demand it!

That’s all really sad considering a 2012 BMW’s GTL stock with 160 less cc’s makes 132hp and a 112lb torque and its considered an “old man bike”

98HP and 101TQ is far from a beast for a 107 Stage 3. I've got a 2018 Road Glide Special with a HD Stage 3 kit, Jackpot 2-1-2 headers and 4.5" SE Street Cannon Mufflers with just a conservative Street Tuner and I got 118TQ and 113HP.

98HP and 101LB Torque! It's a BEAST!

Shit video 👎🏻

What is a 107 rr ...??? I have heard of a 107 but not a 107 rr what is that..?

I like the way you did the steel sleeve. Makes me think of STD cases. Are they still around?

Could it be on the pinion side that the .006" variance is because your center is in a threaded hole? Either way, for a .002" max runout, .012" is CRAZY! I can usually get a good old set of taper crank pin flywheels to true out near .001".

Very nice to say the least !!!CRAFTMANSHIP AT IT'S BEST!! looking forward to seeing this one day on the road...perfect for a trike....here in OZ...cheers ! Ryan o SA

Beautiful design and execution!

Very skilled work, but I get the impression Harleys are pre war technology junk.

is it weird that I have a boner?

You think they'd have some lube going during those cuts. That cutting head has got to be getting blazing hot. Nice dyno graph though.

Harley needs to make a solid crank, side by side connecting rods with babbitt bearings. Keep the 45 degree v angle, hire some competent engineers, do it in house without Porsche. peace out!!

Neat video! I've enjoyed your useful posts on vtwinforum.

Need info. Lame

How much does it cost to have heads ported this way

First thing is by installing the longer pugs you are distorting the bearing surface. Second thing they are called countersunk allen bolts not flat head. And using a live center is not very accurate.

Well done making life simple

Pretty much. There's a reason HDs aren't GP racing!

I'd rather walk.

Old guys rule!

I can tell you right now that is not going to work for very long. been there don that. you have to weld a billet aluminum piece in the case and then machine it to fit the timken bearing set. its a big pain in the ass, but the only thing that will run for any length of time. P.S. you will need to reface the cases because of warpage during the welding process, and don't forget the line bore is critical. Al, in Mobile H-D mechanic for last 35 years (251) 643-7264

Sturgis, you have competition.

The wheels are turning.

What a lovely singing voice you have !

BUTT HURT DETECTED !!!!

thanks

What is that fixture on the cylinder base - is that necessary or can the cylinder be measured without it?

It's a damn shame.

2 spacers and a small block of clay. $30??? Why is absolutely everything even remotely related to Harley ridiculously expensive. Here Harley just change the $ to a £ sign. Which is simply gross. They charged me £6/$10 for a small seat bolt, nothing special. For my Hornet I lost a few bolts so went to Honda and they just gave them to me. You wonder why Harleys are so unpopular here? its Harley admin. Killing off beautiful bikes that only a few can afford. The majority being fat old men.

great video Thanks for posting

ok never mind i dident watch the vid all the way like a ass and see the cyl's and the deck on them cases ... looks big sounds big .

BADASS what c.i is the motor looks small sounds big ???

What a motor, 124" that never missed a beat. Set 2 records at Bonneville with a top speed of 149.811 w/o turbo set up. Coast to coast, drag strips and the Salt Flats. Damn near made 100,000 on a built rocket, not bad. Thanks Randy.........

Thanks, Randy! It's good to see somebody gettin down to the nitty-gritty on this stuff. Rock on, Brutha!

Nice numbers for a 107"!