OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Victa 160 Plastic carburettor

Giday all,
Just a quick note to say thanks to everyone who assisted in this battle.
Case is now closed! .... Replaced the broken bottom ring (top one too but it was OK) and engine sprang into life. It now starts easily, idles beautifully and revs out ro full speed. I was really surprised with the problems that one bottom broken ring posed. Every issue I had with the engine pointed towards the carby but I was on the wrong tram. One suggestion however still puzzles me a little - I think it was Blumbly who suggested spaying Aerostart of "startyahbastard" into the air inlet to determine whether it was carby or "something else" .... I must query how spraying this compound into the engine would help diagnose the problem .... Could you please expand on this fault finding tool??
Anyway it was an interesting journey compunded by the may changes Victa had made to the G4 and LM carburetta ove the years and the uncertainty that exists when a novice strips several units and then mixes up all the parts and starts the reassembley based on using the best bits and the fact that every item mechnaically fitted together.... there were different length main springs, different caps, different poppetts, different diaphragms and even the cams that had subtle differences to their countour profiles(but they did have different part numbers moulded into the unit)and all the bodies "appeared to be the same but part numbers had eroded away so it was impossible to tell if they were in fact differenct from one another. I've attached a few photos to illustrate the differences. I've also added a photo of an Amal 361/1 that I fitted to a Victa 160 for use on my Grand Childs go-Cart .... It superior in every way to that heap of plastic shi#t that Victa produced. I did a lot of research on trying to locate another one but there as scarse as an honest politican ..... they were used on a number of mowers and stationary engines in the 60's msot notably the "Hurrican" Engine (manufactured in Sydney) but Amal (UK) originally supplied it to BSA for use on their 125 cc Bantam D1 motor bikes in the 1950'2 and early 60's. There is a huge cult following in the UK on restoring and even riding the old Bantams and the Amal 361/1 is highly sortafter and I can understand why ....it really fired up the Victa 160 and the gocart literally flys....... and such a simple robust design and manufacture! ...... Don't know why Victa didn't follow Hurricans lead and use them as well???
Anyway as I opened up with .... Case closed!