Posted June 19, 201312 yr Hello! I have a Yamaha tzr 50 and i have bought me a New carburator a dellorto 21mm. The original tzr 50 carburator is 16mm and i must have 120 jet for not get it overheated or damaged only With a leovince v6 exhaust. How big jet do i need With a 21 dellorto carburator? it came With 92 main jet as standard. Should i use the big jet as 120 like the original carburator or must i have more normal jets like a 85-95 jet? The bike have no speed limits and it have leovince v6 exhaust, before its work fine With a 115 jet on original 16mm carburator.. I ask because im afraid to overheat or get damage to the cylindre if i not use big jets on the New dellorto 21mm? Be whery happy for answers!
June 19, 201312 yr Moderator Thr problem is...if both carbs were the same make you could assume the numbers on the jets would relate to the same thing, but if one carb is one make and the other is a different make, how do you know the numbers mean the same...? you'll have to do some plug chopping but I know from experience these days it isnt easy...especially if you are set too rich!
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