R90/6 engine issues

Discussion in 'Old's Cool' started by flexfoot, Jan 26, 2013.

  1. flexfoot

    flexfoot Been here awhile

    Joined:
    Sep 7, 2006
    Oddometer:
    208
    1974 R90/6 with 140k miles. Needs timing chain replacement in addition to valve/cylinder work. I sent the heads and cylinders to Randy Long. He can repair the heads OK, but the cylinder and pistons are out of spec. First over size pistons are $365. each..... Cylinders need boring also. I was thinking that spending nearing $800.00 for pistons is not an option.
    Any thoughts? i was considering a 1000cc kit for $1200. Does that make sense? Thanks in advanced for your wisdom!


    Steve
    74 R90/6 side car
    09 F650GS Twin
    #1
  2. jackd

    jackd Long timer

    Joined:
    Dec 9, 2006
    Oddometer:
    3,083
    Location:
    North Cowichan
    Maybe this would get more responses if you put it in 'Airheads'.
    #2
  3. flexfoot

    flexfoot Been here awhile

    Joined:
    Sep 7, 2006
    Oddometer:
    208
    Thanks for the tip!!

    steve
    #3