11-29-2016, 08:02 PM
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#1 |
Join Date: Dec 2015
Location: coastal SC.
Posts: 206
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Big bore
Has anyone put a 50mm big bore on a taotao thunder with a gy6 I will be doing it in the next few days just looking for someone that has if I run into any problems
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2016 TT250 2014 NSS300 FORZA 2014 UN200 BURGMAN |
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11-29-2016, 09:57 PM
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#2 |
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Join Date: Jan 2008
Posts: 221
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Research resource . . enhanced odds of bearing failure.
If this style muffler. . only remove top ear bolt, then pivot on loose bottom ear bolt, after removing 2 bottom head exhaust pipe nuts. Suspend muffler from upper frame with a cord. During assembly, install top and bottom cooling shrouds prior to muffler attachment. |
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12-09-2016, 10:43 PM
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#3 |
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Join Date: Dec 2015
Location: coastal SC.
Posts: 206
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Jets and idle
I put in the 80 cc kit runs great but hard to get started and idle is bad and it is needing more gas I have put a cone filter on as well but still have stock muffler and suggestions
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2016 TT250 2014 NSS300 FORZA 2014 UN200 BURGMAN |
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12-10-2016, 12:06 PM
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#4 | |
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Join Date: Jan 2008
Posts: 221
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Quote:
If using the stock head which has around a 5cc combustion chamber . . . 39mm bore (50cc) = around 10:1 static compression ratio 44mm bore (63cc) = around 12.6 static compression ratio . . resource 47mm bore (72cc) = around 14.4:1 static compression ratio . . resource 50mm bore (81cc) = around 16.2:1 static compression ratio 52mm bore (88cc) = around 17.6:1 static compression ratio For comparison . . . Sym 50 11.8:1 Honda Ruckus 50 11.9:1 Yamaha Vino 50 12:1 Static Vs. Dynamic Compression Ratio 1 teaspoon (4.9 cc's) in a stock 139QMB cylinder head . . .  
Last edited by tortoise; 12-14-2016 at 01:15 PM. |
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Linear Mode
