I have an old tool very similar to this:
http://store.royalenfieldusa.com/top-dead-center-tdc-finder-tool
It has worked fine for me with motorcycles.
However, who ever came up with this bubble trick all I can say is,
THAT'S CLEVER!!!
Thanks for sharing Kees.
Bob
Oudesluys wrote:
>
> One way of doing that is to make an adaptor from a sparkplug to blow
> bubbles from soapy water. Inserta few drops of heavy oil on the piston
> to create a really good seal. Put the piston in TDC as well as you
> can, fit the adaptor, stretch a film of soapy water accross the
> opening and find the position the bubble is at its biggest.
> That is TDC.
> It does not sound like very sophisticated technology but it works, you
> do not need special tools apart from making up an adaptor from an old
> sparkplug and it is extremely accurate.
> Kees Oudesluijs
> NL
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