Bigger bore on early Pan

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Rammy
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Bigger bore on early Pan

#1

Post by Rammy » Sun Nov 06, 2005 9:21 pm

Hey,
Can a pre 54 pan be made to 80ci. ? ???



Jack_Hester
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Re: Bigger bore on early Pan

#2

Post by Jack_Hester » Sun Nov 06, 2005 10:44 pm

Rammy -

Yes, it can (without a 'bigger bore'). The old way was to use some Flathead 80 flywheels. Nowadays, you can get some T&O or some S&S 4-1/4" stroke wheels, along with some appropriate pistons for the stroke, and have a fine 80". Stock bore. Easy build.

Jack

Rammy
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Re: Bigger bore on early Pan

#3

Post by Rammy » Tue Nov 08, 2005 12:59 am

Thanks Jack
I might just do that sometime. ;D will the old girl have a little more punch? Do you know if you can get the wheels and rods assy. all together?

Jack_Hester
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Re: Bigger bore on early Pan

#4

Post by Jack_Hester » Tue Nov 08, 2005 1:19 am

Rammy -

Both sell complete, balanced and trued assemblies. But, you will have to check to see if your year model is available as an assembly. Or, just wheels. With the exception of your pistons, all your other components will work just fine on the new wheels. You will need the new pistons on hand, to get the weights for balancing the flywheels to your components. That is the most economical route to go, if you have a proficient builder/balancer to go to.
My preference would be the T&O Torque Monsters. They are about 5 lbs heaver than stock. That rotating mass makes for a smoother machine, when hauling a load, pulling a trailer, running a sidecar, and riding double. You can balance these to a 55%, or so, factor. The extra stroke and mass will really wake your engine up.
On the other hand, if you are running a fairly stripped down custom, you may want the lighter wheels, from either company. Quicker revs/response.
Just some options.

Jack

Rammy
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Re: Bigger bore on early Pan

#5

Post by Rammy » Wed Nov 09, 2005 12:17 pm

Jack
I found the SS web sit , they offer a 84 set , I can`t find Truett $ olson any were . Any body know the web sit or ph# ? thanks

Jack_Hester
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Re: Bigger bore on early Pan

#6

Post by Jack_Hester » Wed Nov 09, 2005 2:05 pm


Fast Ed 53
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Re: Bigger bore on early Pan

#7

Post by Fast Ed 53 » Wed Nov 09, 2005 11:03 pm

Rammy, I had T&O do a set of torquemonster wheel's for me last winter. I went with a set of 4-1/2" wheels to end up with about 85" with my bore. A large diff over stock set up. ( Big Steam!! ), after riding this set up all summer I've come to the conclusion that if I had it to do over I would stay with stock configuration. This bike is a ball to ride and very fast but you can feel the stress this set up is putting on this old chassis and drive train and this is a bike I plan on keeping a long time. If you do decide to go with this set up I can highly recommend T&O, they are a good company to deal with and very professional. Ed

toad
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65 FLH

Re: Bigger bore on early Pan

#8

Post by toad » Thu Nov 10, 2005 4:52 am

just cause it's got the steam, don't mean you gotta beat it apart. A bit of conservation, is all you need, & if you need to pass, youi got the steam to blast by

Billy
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Re: Bigger bore on early Pan

#9

Post by Billy » Thu Nov 10, 2005 5:08 am

Ed-

No replacement for displacement !!! :)

reddog74usa
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Re: Bigger bore on early Pan

#10

Post by reddog74usa » Fri Nov 11, 2005 12:58 am

I was talkin to Mr. Trock of Trock cycles about this type of setup on my 59FL. He recommended the 80 cu. in. wheels and rods from T&O. He specified the use of the ductile iron wheels as he said they run very smooth and hold up very well. The rest of the build he recommended consists of an Andrews B cam, 8.5CR pistons and of course one of his modified cv's which I have to say seem to be resonable compared to others.
This setup seems real tasty and will be the way I go when it's time to redo the ol pan. Be carefull not to create a monster cause once ya do ya can't put it back in the cage all that easy. Have a goodin RD

RussW
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2007 Kaw. Vulcan 2000
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Re: Bigger bore on early Pan

#11

Post by RussW » Fri Nov 11, 2005 4:28 am

I did S&S wheels, 4 1/2", .050 over, about 50K ago. Needed a top end after about 35K (to .060), broke a compression ring. Haven't touched the bottom end yet. Andrews B cam, CV carb, cruises around nice with plenty of power when you want it (surprises the Evo's). I don't beat on it, and it doesn't break belts, snap chains, crack the frame, etc. It is a 45 year old bike, and I respect that. But it is nice to once in a while just crack the throttle...

mbskeam
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Re: Bigger bore on early Pan

#12

Post by mbskeam » Fri Nov 11, 2005 5:36 am

I feel so small and short of stroke.....LOL

mbskeam

bad case of stroker envy.........

Rammy
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Re: Bigger bore on early Pan

#13

Post by Rammy » Fri Nov 11, 2005 12:16 pm

I too think it would be nice to have the extra punch if need be.
Do the extra 10 or so cu in cause the motor to run much hotter , temp wise i mean ??? than stk.?

RussW
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2007 Kaw. Vulcan 2000
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Re: Bigger bore on early Pan

#14

Post by RussW » Fri Nov 11, 2005 8:57 pm

Doesn't seem to. Replaced the cast oil pump with an S&S a couple years before the stroker build, more oil flow. Run Kendall 20/50 year round in New England, easier to kick when the temps in the 30's (like today!). After playing with a Mikuni and an SU, I find the CV is THE (BIG LETTERS) way to go. 6 volt, points ignition. With timing right and correct jetting, overheating shouldn'd be a problem.

Fast Ed 53
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Re: Bigger bore on early Pan

#15

Post by Fast Ed 53 » Fri Nov 11, 2005 11:39 pm

RussW, I hope I can get the service out of mine that you've got. I haven't had any problems with the frame or belts and chains. Over heating has not been a problem at all. We corresponded on a post before about my carb problem and I never did get to switch to a CV but I found a old 2-1 upswept with good baffles and was able to tune the S&S into a pretty good ride.

Rammy, Good luck with your project, your in good hands on this site these guys can walk you thru any problems. Ed

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