OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Victa Twin Carb Question

Firstly no, no plans on a nostalgic racing twin carby setup. I was thinking about my Victa twin and how I swapped the carby many years ago in an effort to get it running. I'm sure I remember seeing somewhere around here that the twins use a different needle in their carbys. Is this really needed or will a normal 160 needle work just fine? I assume their specific needle would give them a few hundred extra revs?

I am sure I also read around here somewhere that the only difference between the half crank V35, V40 and V45 is the needle so would a V45 needle or entire carby be better?

Or am I just over thinking things? After all, it won't be doing any quarter mile passes or coming down conrod straight.

Hi Slashnburn, firstly i think you mean the jet, not the needle. The powertorques use the same jet with the exception of a few of the specific models like slashers, later model VSX160's and possibly the the VE50's.
The twins use a diiferent carby afaik but the jet may be the same. Like you said, it'll just be cutting grass and not doing any 1/4 mile passes.

G'day folks,
It looks like the jet was changed in the 1977 Twins, to the same as in the 125/160 engines.

See this past thread: https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/38878

Mr Davis doesn't seem to have gotten around to posting the further 'carby info' mentioned in the first post, worse luck.

Thanks gentlemen. I was sure i read around here somewhere the 160 and 125 used different jets.
Yep Bigted I meant jet.

G'day all,
Yep, the 125 and 160 used different jets in the LM carby, but not in the earlier G4, AFAIK.

The only standard jet P/No I can find for the G4 is that CR03459A [which superseded the original CR03405A]- the P/No for the original [larger] Twin G4 jet was CR03460A.

And I've now found that Mr Davis carby info, it's here: https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=38908

Just for completeness, there are/were 4 different jets for the LM carby:

Thanks Gadge