Author Topic: Tiger T100s 500cc engine knock  (Read 300 times)

Offline T100striumph

  • Advanced Member
  • ***
  • Posts: 16
  • Karma: +0/-0
    • View Profile
    • Email
Tiger T100s 500cc engine knock
« on: January 29, 2024, 11:19:05 PM »
Hi all,
On the way to work today 10 mile trip, my bike developed a deep thumping noise, sounds like bottom end under acceleration. Have owned 51 years so used to all the normal noises. Any ideas would be welcome before I start a complete strip down.
Nev in NZ

Offline R

  • Advanced Member
  • ***
  • Posts: 1472
  • Karma: +26/-10
    • View Profile
Re: Tiger T100s 500cc engine knock
« Reply #1 on: January 30, 2024, 12:09:01 AM »
sounds like bottom end under acceleration.

We think you have hit it in one ?
Drain the oil, and see if any debris comes out.
Big end shells in particular.

51 years is pretty good service. ?
Have fun !

Offline iansoady

  • Advanced Member
  • ***
  • Posts: 715
  • Karma: +6/-1
    • View Profile
    • Email
Re: Tiger T100s 500cc engine knock
« Reply #2 on: January 31, 2024, 03:16:00 PM »
Does it have the bronze timing side bush or ball bearing?
Ian
1952 Norton ES2
1986 Honda XBR500
1958-ish Tre-Greeves

Offline Rex

  • Advanced Member
  • ***
  • Posts: 1500
  • Karma: +11/-68
  • I love YaBB 1G - SP1!
    • View Profile
Re: Tiger T100s 500cc engine knock
« Reply #3 on: January 31, 2024, 04:25:35 PM »
My old T100S had the plain bush main bearing. I think it was a model designation which only lasted from 1967 to the 1970 model year.

Offline Barryhill8

  • Advanced Member
  • ***
  • Posts: 8
  • Karma: +0/-0
    • View Profile
    • Email
Re: Tiger T100s 500cc engine knock
« Reply #4 on: February 10, 2024, 07:05:41 AM »
The engine, finally found the number, is a Villiers 147cc 30C. Does anybody know what spark plug to use?

Offline Rex

  • Advanced Member
  • ***
  • Posts: 1500
  • Karma: +11/-68
  • I love YaBB 1G - SP1!
    • View Profile
Re: Tiger T100s 500cc engine knock
« Reply #5 on: February 10, 2024, 09:18:30 AM »
probably get more replies if you start a new thread about Villiers spark plugs?