Online: beaglebasher, Ultramick

Twin Cam FXRS

9/9
  • John.R
    John.R
    4 years ago
  • Adam76
    Adam76
    4 years ago
    Congrats mate, that's an amazing build. I bet you're enjoying it. 😁
  • John.R
    John.R
    4 years ago
    Cheers mate. Still breaking it in and doing lots of checks as it all settles in. But it's good fun
    Tossing up whether to throw it up for sale haha.
  • brucefxdl
    brucefxdl
    4 years ago
    ya know john [ imho ] even if it didnt perform to ecspectations,it looks the goods just sitting there.certainly a credit to.you
  • Scoot
    Scoot
    1 year ago
    Very nice bike. Well done. 👍
  • Hilly
    Hilly
    1 year ago
    I saw it and thought I know that bike, it's a beauty.
  • John.R
    John.R
    13 days ago
    7 years or so ago I had this bike built in my head, then 2 or so years to build it in reality.

    Its now being torn down and rebuilt, tweaking most things except the tins.

    New drivetrain setup, new geometry and suspension, handlebars, controls, brakes etc.

    Been slow going but have made some progress recently, pulling down motor to start the tweaks. Wanted to check runout before really committing to bits and pieces, and its come out nicely at around 3-4 thou.

    Plan is to change up the CVO 110 setup a little. Its a bit of a pain in the ass to get it Squared away if im honest. Springs need to be sorted, compression needs to be sorted, big heads etc. The good SE high comp 110 pistons are NLA which is a pain...


  • Hilly
    Hilly
    13 days ago
    Nice, what comp and cams are you looking at? 3 thou run-out isn't too bad either, mine is worse. Those big valves need decent springs, especially at high rpm, the SE springs are quality items, just hard on the train.
    If they are high lift cams the over the nose the pressure will be up there anyway, conicals would be nice, the way they handle frequency has got to help longevity. 
    Random thoughts, hope you keep posting, always interesting stuff you get up to.

  • John.R
    John.R
    12 days ago
    I've got 259E's ready for it. The motor only has 5k kms on it and I'm not really interested in going bigger cubes. The drop in high comp pistons are NLA which is annoying. Im thinking of shelving the CVO heads at this stage and getting a set of new 103 heads I have in the garage done @ Rams. Will help get compression where I want, have a reasonable size cylinder head chamber, sort the springs out, and then any gains from the porting etc. 
  • Hilly
    Hilly
    12 days ago
    Solid plan 👍
  • John.R
    John.R
    12 days ago
    Quoting speedzter on 07 Feb 2026 11:23 PM

    I would definitely look at using the 103 Rams heads if the comp numbers crunch OK.
    I always thought the 110 heads were an unusual choice for the factory build.
    Keeping the original 110 pistons would make a cheap build.
    I'm sure the Rams heads already have suitable springs for the 259's ? 


    Yep this is exactly my line of thinking at the moment. The comp numbers become achievable on the 103 heads because the cylinder chamber drops by 10cc or so. And yep, the springs should be fine, Ive heard people have run them with stockies anyway. 
    I dont think I'll be 'losing' anything by swapping out CVO heads for worked 103 heads for what I'm doing. If I was building a max effort 117-124ci, then maybe different story. Im with you in that the more you look at the build for the CVO110 the odder it gets.

    Couple of reasons I want to keep the stock pistons (if I cant find the drop in SE high comp 110 pistons, and I think ive exhausted most avenues), is:
    1. Theyre still very fresh
    2. Keeps cost down and avoids doubling up an expense to sort the same issue (compression)
    3. It's a bit of hassle IMO to get cylinders bored here, or I have to send them off to someone, not much stock of pistons atm anyway.


    I didnt even want to 'build' the motor, all I wanted to do was change the cams because the 255's and setup currently doesnt suit what I want. Its just been a slippery slope of where theres very few decent drop in cams options with the stock setup... I may aswell fix the valve issues for reliability etc etc. 
  • speedzter
    speedzter
    12 days ago
    I have a nice new set of 113 CP pistons on the shelf 😮
    Also a very nice set of WFO larry stage 2+ heads looking a bit lonely !

    Off topic, this is basically the 110 head I'm running now on the 120 .
    https://www.facebook.com/share/v/1Ubj7gwxVj/

  • Hilly
    Hilly
    12 days ago
    347@28 is..... above average 😁👍
  • John.R
    John.R
    12 days ago
    Quoting speedzter on 08 Feb 2026 01:11 AM

    I have a nice new set of 113 CP pistons on the shelf 😮
    Also a very nice set of WFO larry stage 2+ heads looking a bit lonely !


    Off topic, this is basically the 110 head I'm running now on the 120 .
    https://www.facebook.com/share/v/1Ubj7gwxVj/

    Talk to me, Im listening 😅
  • John.R
    John.R
    12 days ago
    Front head off, just printing a razor blade scraper to get the remaining head gasket off, then will see how i go with measuring deck height and whether I can get a measurement im happy with using a straight edge and feeler guages or if I print up a tool to use a dial indicator 
  • Hilly
    Hilly
    12 days ago
    I see one of these in your future 😁
  • John.R
    John.R
    11 days ago
    Im on it currently.

    Did some preliminary measuring last night, looking like 10-15 thou in the hole. Making a tool to both verify my measurements, and more easily take measurements from other areas of the cylinder to get an average. Its not rocket science in the end though.
9/9