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  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    27 Sep 2018 04:58 PM
    HD Forums Australia - IMG_2476.JPG

    HD Forums Australia - IMG_2477.JPG


    Flywheels have been Resized ( forgot to mention when flywheels split pin & roller bearings all like new, but big end of rods shaped like an egg, for was resized now perfect ) , Balanced , Trued & welded

    happy with result!! the way I look at it bottom end is an important part of motor, to build a performance motor you need to do that too, or you only half do it.

    All done in Australia.



  • friday Posts: 95
    Stock Poster friday
    28 Sep 2018 05:49 AM
    did Treese build a sporty with high single cam ?
    push rods of both cyl , positioned in the centre of the V , therefore front pipe = facing east , rear pipe facing east
    Im trying to remember 20 yr ago mag article
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    28 Sep 2018 09:33 AM
    Quoting friday on 28 Sep 2018 05:49 AM
    did Treese build a sporty with high single cam ?
    push rods of both cyl , positioned in the centre of the V , therefore front pipe = facing east , rear pipe facing east
    Im trying to remember 20 yr ago mag article
    John Treese has done a lot of thing's over the years. that you don't see anything written online.
    I just know what I've seen with my own eyes. that was a compleat Top Fuel ( Nitro motor ) looks like a panhead, built for a wibble supercharger.
    I saw the panheads he modified for Metho Tom's sidecar outfit, he also made a complete motor for that same sidecar outfit. 
    but to best of my knowledge his race sporty uses Panheads , like the ones I looked at ( they where fantastic changed the chamber & manifold. he manufactured his our cam masters & got a victorian cam manufacturer to make cams to his design for his race sportster. that makes good low end Torque too. but I don't know about the ohc heads ( I could not see an advantage).
  • tussuck Posts: 1663
    Melbourne
    Motor Head tussuck
    28 Sep 2018 08:44 PM
    Quoting Krash Kinkade on 27 Sep 2018 04:58 PMedited: 10 Oct 2018 08:54 AM
    HD Forums Australia - IMG_2476.JPG

    HD Forums Australia - IMG_2477.JPG


    Flywheels have been Resized ( forgot to mention when flywheels split pin & roller bearings all like new, but big end of rods shaped like an egg, for was resized now perfect ) , Balanced , Trued & welded

    happy with result!! the way I look at it bottom end is an important part of motor, to build a performance motor you need to do that too, or you only half do it.

    All done in Australia.



    There was a great article a few years back about welding vs pinning vs other approaches to the flywheel and the shear strength of each solution.  Oddly enough welding came out as the weakest.
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    29 Sep 2018 06:47 AM
    Quoting Krash Kinkade on 27 Sep 2018 04:58 PMedited: 10 Oct 2018 08:54 AM
    HD Forums Australia - IMG_2476.JPG

    HD Forums Australia - IMG_2477.JPG


    Flywheels have been Resized ( forgot to mention when flywheels split pin & roller bearings all like new, but big end of rods shaped like an egg, for was resized now perfect ) , Balanced , Trued & welded

    happy with result!! the way I look at it bottom end is an important part of motor, to build a performance motor you need to do that too, or you only half do it.

    All done in Australia.



    Quoting tussuck on 28 Sep 2018 08:44 PM
    There was a great article a few years back about welding vs pinning vs other approaches to the flywheel and the shear strength of each solution.  Oddly enough welding came out as the weakest.
    could be right, but I had a Twin Cam dyna from new, the crank pin was the 1.5", I don't know what the HP & TQ was as had a few tunes on that motor, but it was stock Harley flywheels. well the crank pin never broke but it slipped & took out the oil pump at end of the cam side shaft . throw away flywheels, had to get new set, got lucky as got a low k set, from a motor that was made big inch . welded the pin, just like this one, the motor still going ten years on. I did a lot of pass's at drags & road the bike to race, as far north as QLD & VIC south, reving to 7,200 rpm in speed traps ( rev limit I had set ).
    then with Nitro Harleys ( Shumaker 120 cubic inch ) every crank rebuild the pin was welded in same as this & they had a smaller pin than the twin cam. they could not run roller bearings as the shock from burning high % of nitro just shatters the roller bearings. John Treese made a sleave type bearing . latter I saw bigger inch  ( 180 cubic inch ) Alloy male female rods no bearings at all just alloy to case hardened crank pin. saw , they were billet rods, saw a lot of male female rods brake, was always the female rod that breaks . when that happens it takes everything with it.
    In all my years riding Harleys ( all build for speed ) I have only seen three crank pins broken, they were all EVO big Twin bolt together type crank pins. ( not saying they are not strong ). I did not have the crank pin welded for strength, I had it welded to keep it true. not worried about the strength .
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    29 Sep 2018 01:41 PM
    Hi Hilly, we had a very knowledgable HD factory trouble shooter, very smart man.
    When I was building to go fast with twin cam. I mentioned to him I was worried crank pin would slip. he said they are fitted at tighter tolerance 's than the XR 750 flat track racers. but mine slipped.
    S&S never slip as fitted like your saying, but Harley crank pins do, seen a few but not all riders put them to the limit.
    this motor won't see the stress my twin cam has seen as not building it for high rev's or high HP. I'm confident and will take to the track & race.
    thanks for your thoughts.
    I think if I was planing on higher revs crank could break. won't stop me riding it everywhere & enjoying it.
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    29 Sep 2018 09:25 PM
    Thanks Hilly, the Twin Cams , now making lot of HP & TQ, but they have strong Flywheels!!
    my one had 70,000k up when it slipped and that many passes down quarter. I used to go to the track almost every week if not raining.
    surprising it still ran 11's with the crank pin slipped, but trap speed went from 120's mph to 112mph.
    pulled heads & could not believe how hard it was to turn motor over. surprised me it even done 112mph standing quarter.
    welded new crank pin in and that was 10 years back still going.
    I loved that bike! 
    the sporty lighter, but can feel the vibes! but lot smoother than the old Shovel I had. just have to see how it goes down quarter.
    cheers
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    05 Oct 2018 06:46 PM
    HD Forums Australia - IMG_2484.JPG
    Well Her heart almost together, she has a nice set of Hammer Billet lifter block's and Hammer adjustable push rods, Hammer Billet intake manifold ( only manifold in the world made to bolt Carb to late EFI ) have a Hammer Billet air cleaner, all the Hammer products nicely machined & look first class. she has the old cone ignition like my old cone Shovelhead, could use points if wanted too. you see all the guru's making ignition timing curves, but back a few decades was in USA and a guy with an old Sporty with just points ran 9 seconds standing quarter. still a good time for a street HD. but just have to wait see how this one runs.

  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    05 Oct 2018 10:17 PM
    Hey thank's Hilly, the points I had in my Shovel same as a V8 chevy used. yeh not too long.
  • tussuck Posts: 1663
    Melbourne
    Motor Head tussuck
    05 Oct 2018 10:22 PM
    yell out if yah want to sell the EFI?  I'm looking to fit EFI to my 86 FXR
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    06 Oct 2018 07:29 AM
    Quoting tussuck on 05 Oct 2018 10:22 PM
    yell out if yah want to sell the EFI?  I'm looking to fit EFI to my 86 FXR
    hey tussuck, I picked up heads from a forum member who was selling as he got heads from Hammer. this bike has always been a carb. these heads same as 04 up  XL or 07 up big twin, 03 up XB Buell, only reason late XL EFI heads need a special manifold to use a carb is the intake has been machined back to allow a throttle body to fit between the heads. XB Buell have throttle body down draught so are not between but above heads. so normal carb manifold not wide enough to reach the ports to seal uses different flang too, I was lucky Aron at Hammer gave me a used set as they were on back order. I know you can tune EFI perfect, but the carb light I want this bike as light as I can. but the iron barrels heavy.
    if you want to go EFI on yours could get an Aussie Autronic ecu they are good but I don't know how much, just friend uses them a lot with race boats & cars. cheaper than motec.
    I'm using the carb as had the carb I'm using on a twin cam 88" & jetting & tune was perfect on that & got good economy.
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    15 Oct 2018 12:44 PM
    HD Forums Australia - IMG_2487.JPG

    She is a runner!!
    Started up easy, three year old battery was standing for 6 months. it was on bike when I got it and the lady owner said it was two year old, I have not see this brand before don't know what type. was bought at Battery world in Queensland. motor 1450cc 10.5 comp, so good battery good tune out the box.
    it's turned out good I'm happy.


  • paulybronco Posts: 11143
    Forum Legend paulybronco
    15 Oct 2018 04:53 PM
    Nice result
  • Baloffski Posts: 1587
    Victoria
    Motor Head Baloffski
    15 Oct 2018 06:08 PM
    Am not a mechanic"s arseole, but I know when to appreicate working art. Ohoh, Mrs, just hit me on the head again for looking at bike porn.. Good read, and good riding......
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    15 Oct 2018 06:31 PM
    Quoting paulybronco on 15 Oct 2018 04:53 PM
    Nice result
    thanks Paul.
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    15 Oct 2018 06:32 PM
    Thanks Hilly.
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    15 Oct 2018 06:33 PM
    Quoting Baloffski on 15 Oct 2018 06:08 PM
    Am not a mechanic"s arseole, but I know when to appreicate working art. Ohoh, Mrs, just hit me on the head again for looking at bike porn.. Good read, and good riding......
    LOL Mick, thank's.
  • speedzter Posts: 1740
    The 'Rat
    Motor Head speedzter
    15 Oct 2018 09:03 PM
    Krash, good to see it come together.
    I would love to hear the old girl fire up !
  • Krash Kinkade Posts: 2446
    Motor Head Krash Kinkade
    16 Oct 2018 08:17 AM
    Quoting speedzter on 15 Oct 2018 09:03 PM
    Krash, good to see it come together.
    I would love to hear the old girl fire up !
    Hey Speedster Thanks, if I can get someone to take a vid of her starting up. won't be for a few weeks as going away.
    Must be the old style ignition that starts up easy, my twin cam used the crank sensor ignition and was never as quick to start as the old carb Buell or the Sporty. I have no experience with the late XR or sporty's that use same ignition as the twin cam did.
    but have to also remember this is same style ignition I used ( almost ) with a kick start only shovel, they had to fire up quick & easy or you were stuck.
    Talking about my old shovel, my friend who now owns it, got a Rivera 6 speed with the 3" open belt primary but with a late style geared up starter & that motor also is one of the quickest easiest to start Harley's I've seen, as it's still basically same set up as I used to kick start, so it's just a touch of the button and it bursts into life quick . amazing to watch as he turns on petcock for fuel & the starter button is hidden and you don't see him use it, like the handle bar button, and the old shovel bursts into life. but I know EFI starts up real quick, I was talking about carb crank sensor ignition. the shovel starts like an EFI
  • speedzter Posts: 1740
    The 'Rat
    Motor Head speedzter
    16 Oct 2018 11:18 AM
    Krash, when you get time, the start up Vid would be good to see.

    I have a strong 120" Twin Cam that I built running a 48mm Mikuni.
    I'm using an aftermarket Daytona Twin Tec ignition, and it can struggle to fire.
    It doesn't have the Cam sensor fitted as it had originally, just the crank sensor, so it uses the MAP sensor to decide when the correct cylinder
    is on TDC to fire. The Auto comp' releases  bleed off too much compression, and it has trouble sorting itself out.
    If I don't use the comp' release's it will fire straight away, but it is too much stress for the starting system !
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