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 Thread Rating: 117 votes, 4.91 average.
Old 12-07-2006, 11:08 PM
Scored: 10
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124in. Engine Build (page 1)

As a preface...this may show you some terms and tools needed, but it is nearly impossible to note everything, Nor is it possible to document each check of fits made. This is a GENERAL overview...and maybe it will either help you get the knowledge you need before you actually attempt it....or dissuade you from tearing into the project. it is only meant as an order of the process, not an actual manual to follow.

Ok guys....this is what you are dealing with...a box full. This is a 124 S&S super sidewinder plus motor, unassembled and carbed. This picture shows the box of goodies you have to deal with.

Next, using some gun brushes to remove any polishing residue left behind in the right case half as well as cleaning out oil pump passage, if not you might as well just throw some sand in your oil tank and buy a new motor. Parts must be deburred where needed, and cleaned immaculately. I use about a case of brake kleen for each motor...and all passages are blown out with air. Special attention is paid to threaded holes, which should be chased with the thread chaser....and also alignment stud holes...bolting the case halves together. You don't want aluminum chips or polishing rouge in there giving false torque readings.

Now with the cleaned case half....wiped dry and blown out with air...ready to install the flywheels. As you see there is a Timken bearing race...outside....

This is the inside of the same left case...another Timken race....these are coated with some assembly lube prior to installation.

Now for the Timken bearing spacer. This comes as part of a matched bearing set...that is designed to keep the bearings apart at the proper distance...for the machining done where the races are installed.

Late style flywheels used in these motors, the gear tooth look is an adaptation from the factory I believe, but its purpose is to count the flywheel rotation...hence the name of the sensor used, the crank position sensor. In this motor, I'll be using a crane hi-4 and carb, so that feature really wont be incorporated.


Brent Mills
Club Chopper

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Engine Build
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Old 03-17-2007, 07:25 PM
Super Moderator
Very Nice Brad!!!!!!!!!!!!!!!!!!!!
Old 03-17-2007, 08:39 PM
Club Chopper Member
Terrific thread there Gypsy!! I really appreciate you taking the time to do this for us!
Old 03-18-2007, 04:01 AM
CC Member/Contributor
This site just keeps getting better, thanks for taking the time to do this, for me who just rides them, its nice to get some insite on how things go together and work. There are a lot of helpfull people around this site.
Old 03-18-2007, 06:37 AM
CC Member/Contributor
Nice job Brad. Very nice job. This is a great tutorial.
You put a lot of time and effort into compiling all of the pictures and describing the process.
Old 03-18-2007, 11:29 AM
Super Moderator
I know who to call if I ever have a question related to motorcycles!
Thanks for all you've done for the members here, Brad!
Ua mau ke ea o ka `aina i ka pono

The life of the land is perpetuated in righteousness.



"Gentlemen, we must all hang together or assuredly we shall all hang separately."

Old 03-18-2007, 01:59 PM
Club Chopper Member
thabk you for taking the time for tutorial
Old 03-19-2007, 02:36 PM
Awsome article Brad
CC Member/Contributor
WOW! I'm about to contribute to CC again. The value of info like this... If everyone on here could pony up just $10.00 or so once a year... You'd all be getting a great value AND BigB would be able to afford all the redundant goodies so we would never go down...

Old 03-24-2007, 08:26 AM
Wow!!! How the hell did I miss this one? Great job Brad!!!
...Handle every stressfull situation like a dog...if you can't eat it or hump it...piss on it and walk away...
"if i got all bent out of shape over folks i don't respect... i might wake up with your life"
Old 03-26-2007, 06:10 PM
Club Chopper Member
wow that articalwas just what i was looking for.thank you.even the harley shop could not explain . ajusting valve lash on the 124 thanks again chuck.

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