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Post by tr1ppyy4m4h4 on Jul 8, 2012 1:25:58 GMT -5
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Post by lshigham on Jul 8, 2012 2:37:32 GMT -5
30mm carb's way too big. I'd be using a 24 max, 21 if possible on your state of tune.
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Post by tygertung on Jul 8, 2012 5:36:53 GMT -5
Maybe changing to a 19mm carburettor would be a good mod?
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Post by 90GTVert on Jul 8, 2012 6:25:24 GMT -5
:welcome: to the forum. I replied in another thread about the carb. I deleted about 4 other pretty much clone threads. I'm glad you're making yourself at home, but please do not create the same thread in every section. It's not necessary to get an answer here.
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Post by jmkjr72 on Jul 8, 2012 7:07:24 GMT -5
yeah i see you joind another board with the same question
but like o said over on zf you will find that the carb is way too big and you need a 17.5 or 19mm carb
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Post by tr1ppyy4m4h4 on Jul 8, 2012 9:19:02 GMT -5
Not a problem, i was just trying to get as many replies as possible. i didnt really know what thread to post it in i guess. i should have just posted in the 2-stroke performance thread. thanks for the help
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Post by stepthrutuner on Jul 8, 2012 12:28:10 GMT -5
A wild ass guess would be to start with a 140 for a carb that big.
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Post by tr1ppyy4m4h4 on Jul 8, 2012 21:38:01 GMT -5
yeah ive decided to run the 24mm carb with 140 main jet and 38 pilot jet. do you guys know about power jet and if its needed?
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Post by lshigham on Jul 9, 2012 2:38:45 GMT -5
Around 112-115 with an open filter would be expected. Start at 125. You'll need a smaller pilot jet too.
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Post by skuttadawg on Jul 9, 2012 8:15:17 GMT -5
A Suzuki RM 80 uses a 28mm so yes 30mm is way too big I would go with a 21 or 22 mm
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Post by stepthrutuner on Jul 9, 2012 8:17:41 GMT -5
My suggestion was for your initially stated carb size of 30mm.
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Post by tr1ppyy4m4h4 on Jul 9, 2012 10:07:28 GMT -5
well a guy that had a 70cc kit with a 28mm carb is running 144 main jet and 40 pilot he recommended the 140 main and 38 pilot to start with then go down from there and he said to buy some jets from 120-140. he said it would run rich enough for me. the lowest pilot jet i can find on ebay is 35. any help would be gold right now
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Post by lshigham on Jul 9, 2012 12:35:31 GMT -5
My advice is to get a 21mm like we said, max 24. It'll be a dog to jet and loose low end power with no gain up top.
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Post by tr1ppyy4m4h4 on Jul 9, 2012 15:03:25 GMT -5
i guess we will see. the carb gets here tomorrow. lets cross our fingers. :light:
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Post by stepthrutuner on Jul 9, 2012 15:06:40 GMT -5
He can always adjust his throttle slide to travel a limited distance, say, 2/3 the way as a means of compensation provided he gets the idle circuit working acceptably. Also there's always solder-filling and redrilling to at least decide on pilot size provided he has some sort of bit. A straight small sewing needle will drill the solder when cut off square with sharp diagonal cutters at the desired major needle diameter or dremmeled to a similar resulting boring type cutting tip. De burr the corners so they don't exceed needle cutting diameter. Center drill the solder if you got the appropriate bit to locate the hole along the axis of the jet. Chuck the needle in an electric drill or grip it in a pair of vice grip pliers and carefully drill your hole. If you got a drill press you're on cloud nine.
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