Australian Karting Forum
Vintage and Historic Karts Australia
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This is from my UK corespondent sometime ago!!
"The Sirio 51 TT was a TT, homologated in 78. The Sirio 50 was the later motor with the nuts for the barrel / crankcase recessed from the top. This was homolgated in 1986. In the uk versions were sold with the three TT ports larger TT and a National version with the normal TT. I dont think this was internationally homologated. The TT45 is the reed from 83."
Hope that clears it up
Yes anthony you are right - the siro 50 was 1986. I typed 1983 twice.
ooops - stop press.
The matcher made a boo boo.The 78 homol does have the barrel held on with short studs, nuts inserted towards the bottom.Looks like this version is Era 4 ... - still waiting to hear what year it was homologated.
just had mine matched up to the homol. papers and it is a 78 homologation - so Chippo - I reckon, bashed on the pictures yours is too.
all 50mm (zenith excluded)
TT45 Reed only?
9 ports apparently
Thanks H and M,Is there a way to distinguish the TT45 (Zenith).Were the earlier version 50 mm bore or 48?The one I have is a 50.
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