[Fot] pop up pistons for the TR2-4 engine ? RE: TR3 Race pistons and liners

yellow04 at tr4racer.com yellow04 at tr4racer.com
Tue Nov 9 10:24:01 MST 2021


A heck of a lot of races have been won by wet-liner TR's running pop-up 
pistons. And I'll bet none of them ever had a head collapse.

Just sayin'...

On 2021-11-09 11:44, Alexandre Camoletti via Fot wrote:
> Gents,
> 
> I recall, but I may be mistaken, that Kas wrote in one of his books
> that he had experimented pop up pistons but because of the specific
> shape of the TR2-4 combustion chambers the pop up design was
> detrimental to the propagation of the flame front and actually this
> was offsetting the compression gain, so he abandoned this route to
> remain on the traditional milling one (with thin steel headgasket,
> which can make quite an additional difference).



More information about the Fot mailing list