Author Topic: Tiger T100s 500cc engine knock  (Read 2090 times)

Offline T100striumph

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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

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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

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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
1964 Norton Electra
1969 BSA/Suzuki
1992 Yamaha 250SRV

Offline Rex

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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

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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

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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?

Offline Rex

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Re: Tiger T100s 500cc engine knock
« Reply #6 on: March 20, 2024, 03:55:49 PM »
So, how did the 500S engine knock turn out, or even the Villiers spark plug? ;)