Bad-Boy 92 inch 1952 Pan

[oneuptom]

Fellow up in Canada did a few motors like that "Doug Coffee" shop's name was "Headquarters ...

Said the valve angles didn't lend themselves to work well .. ??

Maybe he was using really big valves?.. The names a bit familiar but nothing coming to me yet.

I realized afterwards that with the small valves I could flatten the angle to bring the chamber down... but my calculations tell me
I can leave the angles alone and with hardly any welding at all & using the flattops get my 10:1

[Dragstews]

Doug has a Twitter account .... Doug Coffey (@dougcoffey1950) | Twitter

Ya might want to bump heads with the Fellow ... Since he has already been there and done that ..

[oneuptom]

Doug has a Twitter account .... Doug Coffey (@dougcoffey1950) | Twitter

Ya might want to bump heads with the Fellow ... Since he has already been there and done that ..

Thanks!.. Had a good look round his site and see that he's found his asymmetrical cam lobes are helping to deter reversion somewhat and help pick up the bottom end. Nothing there for me though, everything too big for my needs.

Undoubtedly a great guy to run things past if you needed!.. And those Canadians love to talk

[oneuptom]

I guess Doug is retired now.

I ran his Evo HQ-0024 Rumble Stick in the Pan simulation and lost a few hp & ft lbs. I tried it at 10.5:1 also but still didn't recover the losses. And it made the build less pump gas friendly with a higher dynamic compression. Cam sure would gentle on the valve-train though but doesn't like the Pan's RA ratio I guess.

The M8 valves are 2 tenths longer than the Pan valves so I can reduce the chamber radius by 3 tenths to really shrink down the chamber volume. I also like the M8 intake valve shape better for the exhaust, not so reversion prone by the looks of it

Edit: Comp Cams SHV 242/242 R104 (Early) stock 104 LSA 86.7 ft lbs
Comp Cams SHV 242/242 R104 (Early) custom 113 LSA 81.6 hp - 89 ft lbs torque

IIRC... Comp Cams will widen the LSA, custom grind their cams?

[Dragstews]

Impressive numbers from having so small of cubes ...
_____________________________________________

Huge box came in today ...

... /// https://youtu.be/sGEjx4syPwo \\\ ...

Had some real relic's in it ....



What I'm seeing is a cam cover with no war wounds ... Been a coon's age since I seen a Oem cover from the 40's looking that good !!

Super early tappet blocks also are in grand shape for being Alum (48-52) still std. size too .. !!

Oil pump been converted with having a dummy governor outer plate installed ... That's a plus ...
We can improve it with getting a set speed-up gears .. Be the same speed that the 73-up motors has ...

Breather gear is a leftover from the Knuck era ...
Again can improve it by replacing it with a S&S gear ...



Dang .... No war wounds on the case, threads all look good, no damage on the mounts ... Don't get to see many of this era that's in this good of shape ...
Must say this scooter has been taken well care of over the years ...

[rockman96]

Nice! Is that farmall's stuff?

[Dragstews]

Nice! Is that farmall's stuff?

That's a dang good question ...

On the box it said Mark Lasalle ..
(Could be one of his aliases .. Kinda like Batman or the Lone Ranger ??)

... /// https://youtu.be/YmEB-dn5apY \\\ ...

Time for a bit of bead blasting ..

[farmall]

What year range is that right side case? You'd mentioned it was later based on the assembled engine photo I posted. What does the 48 on the inside pattern tag refer to?

Pic shows inside of left case which I'd thought (due to the different external surface finish) might have been aftermarket. The number 112-481 is used on Knuckleworks cases but this engine was rebuilt a long time ago. Did they repop the inside mold tag when they made their patterns? Nice touch if so.

What do I have here? Number pad height is about .090" and boss is dead flat checked against a straight edge. If it's not or probably not aftermarket I'll ship it for yer evaluation. Pan values are getting silly so though I like upgrades if it's worth saving then I might do that since I'm not going to beat on this one.

[farmall]

1948 front head

Looks (technically...) serviceable but I want to ride this one so I'll set it aside though it's been rebuilt and look for a 1948 rear or a pair to have a pair for da future when prices get completely stoopid. Then it might be worth all the casting rehab...unless someone makes perfect repops by then.

[Dragstews]

The right side case is 1950 to 52 ...



Here's a photo (Below) of the 48 & 49 case ... That area that I circled is left over casting from the Knuck top-end oil return ... It's there but was not drilled ...



That casted in date code is the first year that a major change was done on the motorcase ...
47 Knucks will have a 41 date code ... 41 was the first year for the FL's and ran all the way to 47 (Production run)



Belly numbers tells the year that the cases was made in ...

[rockman96]

Belly numbers tells the year that the cases was made in ...

You're such a tease

[oneuptom]

What do I have here? Number pad height is about .090" and boss is dead flat checked against a straight edge. If it's not or probably not aftermarket I'll ship it for yer evaluation. Pan values are getting silly so though I like upgrades if it's worth saving then I might do that since I'm not going to beat on this one.

Only referring to the far right #pic here. Nothing there looks like my 48 cases do . The pad on my case is exactly 0.100 proud of the case, belly number 148-2178

[Dragstews]

You're such a tease

Was going to take a photo of farmall's case numbers, but there was none on the case ...
This tells me that somewhere down in the life of it something wacky took place ...

I have the stamps to put them back on, really no need for em cause they are not used for the Vin #'s ..

Since our plan is a new super up-grade left case, we can do a I.D. number which includes the year 2021/22 ...
Or stamp in " U Fucking A " ( A is for Awesome)

[farmall]

Belly is mostly removed on left side too. Final decision, it's wall art and can go with the bike at my estate sale (about which I won't be around to care).

Proceed with upgrade plan including Knuckleworks left case, output shaft swap, pump gears, S&S breather gear and any massaging that case half needs.

[Dragstews]

What .... No polish on those Alum. perfect rarity og Harley parts .. ??


(Granted, plating is out of the question)

[farmall]

Polishing is metal removal is damage (unless it's blending a repair) and requires a lifetime of perpetual re-polishing (no protectant is perfect) so fuck all that.

Making vintage sand castings look modern kinda defeats my point. MUCH respect for the labor involved in making a show bike but this one will be a typical functional rider from before they were fetishes.

[Dragstews]

10-4 ... Copy dat ..

No shinny for farmall ..



(You Sir are a dyeing breed)

... /// https://youtu.be/tOeV-efObZY \\\ ...

[Dragstews]

Say .... Want to move the case breather to the right side case like what was done on the 52 case .. ?
(Great mod for running belt drive)



If you're planning to keep a chain primary, might want to keep the auto lube in play ..

Your call ... Chief

[Dragstews]

Here's some kind of ugly ...



Lets see how it cleans up with doing a tune up on it ...



Cleaned up pretty dang good .. Powder-coat laid down nice ...



Part of the tune up is to reseat the check ball ...



After the light cut a bit of lapping goes down ..



All the gears but for this one looks great ... Got a new gear on order ..

Pump body shows no signs of damage ... Which is a bit strange ..
I'm thinking that the damaged gear was installed in the pump from another pump where shit took place .. ??

[Tattooo]

That's sure looking real nice.......