Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 29

Thread: It's amazing how quickly these machines come apart.

  1. #11
    Join Date
    Dec 2002
    Posts
    5,190
    Total Downloaded
    109.89 MB

    Re: It's amazing how quickly these machines come apart.

    Quote Originally Posted by MuldoonsGhost View Post
    Next job is to strip the heads, clean the paint, carbon and any other crap off of the heads and cylinders, then get them in for rebore and pistons, valves, guides etc. I don't have the tools or knowledge for the engineering stuff so sadly I have to have them done by someone who can.
    We all do that. Many custom shops and H-D dealerships send that work out. That's what machine shops are for.

    I have an engineer mate who works on gas rigs and who knows engines inside out - he has 3 generator Shovelheads - and even he does not have that stuff at home. Why would you?

    Enjoy the project. Been doing somethng similar. Just got the heads and barrels back....

    Join the Harley-Davidson Riders Club Great Britain

  2. #12
    Join Date
    Sep 2020
    Posts
    44
    Total Downloaded
    0

    Re: It's amazing how quickly these machines come apart.

    The next installment. I've just broken the cases and got the crank out. Now I have a dilema. The main bearings either side of the crank are SHOT!. I need to check the oiling as a priority. However, the crank pin 'feels' good. There is just a tiny amount of play side to side and I can't feel any play vertically. I'm about to measure the end float and see if that is in tolerance. HOWEVER, rebuilding an engine with crankpin bearings that are worn seems stupid. Should I replace the conrod and crank pin assembly as a matter of course?

    To this end I have already bought a new old stock original set of rods and bearings. It came from the USA and cost just over £100 with taxes. I was expecting to need to replace it all, but I'm wondering if I should not? I can make the swap without a problem but I don't have the tools (I have 1 dial guage and no 'frame' to mount it on) to make sure the two halves of the crank are true to each other. Here is one of many videos about how to do it. Anyone here done this? I can send it to a shop but it's more money. What are your thoughts, you experts?

    Anyway, I'll measure the end float and reread the book before deciding. My mind says I should, it's the centre of the bike.
    Ride safe, Mike.

    Join the Harley-Davidson Riders Club Great Britain

  3. #13
    Join Date
    Dec 2007
    Posts
    646
    Total Downloaded
    9.16 MB

    Re: It's amazing how quickly these machines come apart.

    hmmm....sounds like Alex time ? As this far in do it right and once....

    Join the Harley-Davidson Riders Club Great Britain

  4. #14
    Join Date
    Sep 2020
    Posts
    44
    Total Downloaded
    0

    Re: It's amazing how quickly these machines come apart.

    Quote Originally Posted by watchman View Post
    As this far in do it right and once....
    Yes.


    Thinking about it, once I get my cylinders and pistons back I still need to have the crank balanced to their weights, so if I can find the right shop it might not be too onerous to get both done together. But, I haven't got the correct socket. 1 3/8". Sussex tools contacted.


    Last edited by MuldoonsGhost; 30-10-2020 at 11:32 PM.
    Ride safe, Mike.

    Join the Harley-Davidson Riders Club Great Britain

  5. #15
    Join Date
    Mar 2006
    Posts
    6,374
    Total Downloaded
    12.33 MB

    Re: It's amazing how quickly these machines come apart.

    You have no choice, imagine reassembling and then finding it does need doing - you'd be saying very unkind things to the bloke in the mirror.

    Join the Harley-Davidson Riders Club Great Britain

  6. #16
    Join Date
    Sep 2020
    Posts
    44
    Total Downloaded
    0

    Re: It's amazing how quickly these machines come apart.

    Quote Originally Posted by Paul P. View Post
    You have no choice, imagine reassembling and then finding it does need doing - you'd be saying very unkind things to the bloke in the mirror.
    You're right, and I know it. Oh well, I need to order some parts, (bearings and seals of various sizes) and a socket to fit. I guess I need to clean and prep the cases, then start on the chassis.
    Ride safe, Mike.

    Join the Harley-Davidson Riders Club Great Britain

  7. #17
    Join Date
    Dec 2002
    Posts
    5,190
    Total Downloaded
    109.89 MB

    Re: It's amazing how quickly these machines come apart.

    Speaking as someone who has torn down his Shovelhead and split the cases at home..... what you are now talking about really is not a job for the home mechanic, that one. It's too critical and unforgiving if you do not have EVERY tool and years of experience. I do not. I do not know any rider who has.

    Send it to a specialist. Wrong time to pinch pennies.

    Join the Harley-Davidson Riders Club Great Britain

  8. #18
    Join Date
    May 2014
    Posts
    74
    Total Downloaded
    54.01 MB

    Re: It's amazing how quickly these machines come apart.

    Well, I took my '89 apart by using 3 bars of ally and some studding to push the crank out of the left hand case, don't hit it!!
    I also have a lathe, so used that as the truing fixture utilizing the centres and to make a crank puller to reassemble same.
    The club have all these tools available but tool supply had been suspended due to bloody Covid.
    I bought a new rod and bearing set rather than use the original rods, as the machine shops were shut and I don't have a hone to true the rod bores.
    A new crank pin and bearing set to fit the trued rod bearings would have been the better option for me.
    Now the one thing I meant to do but forgot, was to weigh the new rod set, big mistake, I think they were lighter and I should have had the assembly re-balanced ---
    i now have more noticeable vibration at around 65+ (that's speed, not me) --- Mind you a silky smooth Sportster is a thing of myth.
    So, it is doable at home with quite basic equipment, just take your time. If truing the crank is outside your comfort zone, send it to a GOOD engine builder to sort out.
    Even a truing stand could be fabricated with 4 ball races and some angle iron, doesn't have to be fancy.
    Failing that talk to Alex ----
    Good luck!

    Join the Harley-Davidson Riders Club Great Britain

  9. #19
    Join Date
    Sep 2020
    Posts
    44
    Total Downloaded
    0

    Re: It's amazing how quickly these machines come apart.

    According to the BBC news none of us will be doing anything next week. My heads will take a month or more longer to get back, bearings are not going to be posted to me. So what. Good luck to everyone this will hit financially. I am fortunate in that I'm a Council Officer for work. (Dog Warden). It's unlikely I'll see a loss in pay. I visit peoples homes who are not so lucky, daily, and it scares me how many people will be hit."Coronavirus: Cabinet to meet as PM considers England lockdown"

    Ride safe, Mike.

    Join the Harley-Davidson Riders Club Great Britain

  10. #20
    Join Date
    May 2014
    Posts
    74
    Total Downloaded
    54.01 MB

    Re: It's amazing how quickly these machines come apart.

    According to the BBC we are ALWAYS doomed. Bloody Londoncentric twats.

    Join the Harley-Davidson Riders Club Great Britain

Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •