THIS KIT IS TO BE USED ON ANY Z50A OR 1980 AND 81 Z50R ENGINES. THIS SHOULD BE USED WITH THE STOCK 50CC HEAD. THIS CYLINDER IS 85CC, HOWEVER IT MAY SAY 49CC ON THE CASTING. THIS WILL FIT IN THE TRANMISSION WITHOUT ANY MODIFICATIONS. |
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| THIS IS A REPLACEMENT FOR OUR 85CC CYLINDER ONLY!! THE STOCK CYLINDER WON'T BORE OUT THIS BIG!!! THIS IS FOR THE OLD Z50 HEAD AND THE 51MM OR 85CC CYLINDER. TURNS THE 68 TO 81 Z50'S INTO AN 85CC GO GETTER!!!!! |
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| THIS KIT HAS EXTRA PARTS YOU WON'T USE,, THIS WAY IT WILL WORK FOR DIFFERENT MODELS. FYI STOCK 50'S = 39MM ALL Z50A Z50R XR50 CRF50 = 39MM ALL XR70 CRF70 = 47MM CT70 ALL = 47MM ATC70 ALL = 47MM C70 PASSPORTS ALL = 47MM C70M'S ALL = 47MM 85CC KITS = 51MM 88CC KITS = 52MM TRX90 = 47MM TRX90 103CC = 51 TRX90 106CC = 52 THIS WILL WORK FOR ALL YEARS OF 50'S 70'S AND TRX90'S PICK_BORE_SIZE SEE DROP BOX BY ORDER BUTTON 39MM_ 200008 47MM_ 200009 51MM_ 200010 52MM_ 200011 |
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| THESE ARE SOLD EACH AND WILL NOT FIT THE STOCK HONDA CARBS. THEY ARE FOR THE 20MM AND 22MM MIKUNI CARB'S WE SELL AS A REPLACEMENT CARB. THE SIZE OF JET WILL VARY WITH THE CONDITION, SIZE AND PERFORMANCE ADDITIONS TO THE ENGINE. MOST STOCK 70'S WILL BE AROUND A 130 AND STOCK 90'S AROUND 140. THE CARB COMES FROM THE FACTORY WITH AN 180 MAIN JET SO MOST OF THE TIME YOU WILL NEED A SMALLER JET. ALSO WE HAVE FOUND THAT THE 22.5 IDLE JET WILL WORK IN 90% OF THE APPLICATIONS. |
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| THIS WILL ALLOW THE BIGGER CARBS TO CLEAR THE CYLINDER WHEN USING THE 18,20 OR 25MM CARBS AND THE SHORT 22MM MANIFOLD , ALSO HELPS GET THE CARB AWAY FROM THE CYLINDER HEAT. THIS IS 10MM THICK , THE CENTER HOLE IS 22MM AND CENTER TO CENTER ON BOLTS ARE 44MM. |
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| THIS GOES CLOSEST TO THE HEAD ON THE INTAKE SIDE. FITS KO THRU 1977.
and all atc70's
22MM CENTER 44MM BOLT PATTERN ALL HOLES ARE CENTERED all SL AND XL70'S TAKE 2 ONE ON BOTH SIDES OF THE INSOLATER |
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