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  1. #1

    Join Date
    Feb 2014
    Posts
    705

    Default Shovelhead basket engine

    i picked up a basket case shovel engine a few months back, tore it down to take a look, and wanted to post it up here maybe get some info and input on putting it all together. Biggest questions / concerns are that the engine clearly sat for a while, so some pitting/rusting occurred in one cylinder but i havent sanded it down yet, just wiped it down with a rag basically. flywheel is spinning smoothly, and looks to have the bottom end completely assembled / fresh. cases are delkron, cylinders are S&S 80's appears, but im not really sure on bore size / piston size. rear piston reads s&s 1600, other reads b3002.

    so big question is, how bad is that rusting inside the cylinder, can it be runnable with sanding or run as is? can feel roughness with fingers on the cylinder but doesnt seem serious/surface rust only. the valves looks immaculate and motor appears to have never been ran. id need gaskets for reassembly, hardware is all there. not sure what oil pump these cases would need either, any input? never really assembled a motor before but this looks like its all in front of me. id need to read up on how tf the piston rings need to be assembled they seem very loose on the pistons not sure on alignment and assembly.

    dumping photos below, if you cannot view them try following the link: https://imgur.com/a/HXmBMnj


  2. #2

    Join Date
    Sep 2012
    Posts
    12,127

    Default

    Damn that thing is beautiful...... I would just dingle berry hone the cylinders take the motor all the way apart clean it up and put it back together..... That was a great find...

  3. #3
    SamHain
    Guest

    Default

    sure you can try it. Iíd tear it down. Check/clean everything get measure cylinder clearance, go for a hone and rings. Thereís some reason somebody didnít finish half a days work, maybe they didnít know what they were doing, who knows what they already did. Sweet set of cases.

    Edit: Ah I see you tore it down. Still not horrible advice. You could try to rub that cylinder out with some non detergent oil and clean rags, thatís my go to after a hone. Rings fit loose on pistons, thereís some varying opinions, but most pretty much say donít put the gaps right on top of each other, space them equally.
    Last edited by SamHain; 09-16-2018 at 5:03 PM.

  4. #4

    Join Date
    Feb 2014
    Posts
    705

    Default

    well i might not have fully stated this but the motor was all together when i first received it, bought sight unseen, meaning i did the tear down to verify everything. im certainly considering taking it to a shop for second opinions and such but it had compressions taking the cylinders off. only piece really missing is an oil pump, pushrods, ignition off the top of my head. i think for the price i got it it certainly seems like a great start. with any luck ill be able to put this together and swap out my shovel engine and sell it and make a profit. or just build another bike hah! you right tho about it sitting and not being ran. theres always a story...

    supposedly this was sold for someone who was planning on using it in build but never got around to it. Į\_(ツ)_/Į
    Last edited by FatChibs; 09-16-2018 at 5:05 PM.

  5. #5

    Join Date
    Sep 2010
    Posts
    12,384

    Default

    Got 3-5/8' Big Bore jugs, that a big plus in the horse power department..
    Cast pistons, think i would want to do a clean up bore, but would need to buy oversize slugs....
    Stock Rods in a Stroker ain't nothing to write home about...

    Case is drilled for the 81-up oil pump, can run the 73 to 80 pump, but would be in need of plugging the pressure relief hole in the case..

    Kinda wondering about that cam cover... Casting numbers say -70 if I'm seeing it right ...???
    Those 70-72 covers are a bit diff. from the 73-up stuff... They are a side oiler instead of oiling the rods from the end of the pinion shaft..
    Also the oil feed hole going to the case is not the same as the later...

    Next on the list of what I think I'm seeing is a late cam meant for 77-up ... Not sure but do think the breather and pinion gear are for the early gear pitch, if so that's a mismatch of parts....
    Last edited by Dragstews; 09-16-2018 at 5:50 PM.

  6. #6

    Join Date
    Apr 2013
    Posts
    9,208

    Default

    Quote Originally Posted by Dragstews View Post

    Next on the list of what I think I'm seeing is a late cam meant for 77-up ... Not sure but do think the breather and pinion gear are for the early gear pitch, if so that's a mismatch of parts....
    I've seen what that does, fortunately without personal involvement.

    Wasted gears, chips all over and no oil pressure....

  7. #7

    Join Date
    Sep 2010
    Posts
    12,384

    Default

    Click image for larger version. 

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    70-72 ^^

    Click image for larger version. 

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    73-up
    _________________________________________________

    The cover that you show is weak in the webbing around the bushing area,
    that's ok for running stock stuff, but when higher loads (As in valve springs with much more spring pressures) they have been known to fail ....

    I would recommend a S&S ... They have a much better breather baffle over stock and are super beefy ...



    Click image for larger version. 

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    Ya won't be seeing much or any oil carry-over with this cover in play ...

    Also ....
    You need to ID your pinion shaft....
    If it has a hole in the side it is for running the 70-72 cover...
    If it don't have a hole in the side 73-up cover is needed...

    If indeed it is 73-up and it's made by Jim's you can install a metering plug in the end of it...



    Or install a plug made for the stock type shafts....

    Last edited by Dragstews; 09-17-2018 at 1:39 AM.

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