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07-22-2014, 02:59 PM | #1 |
Join Date: Jul 2014
Location: Kapaa, HI
Posts: 2
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Noob Questions about BBK
Aloha. I picked up a brand new TaoTao BWS-50 and love my new scoot with the exception of one thing....Hills. My speeds are great everywhere until i get caught on a hill putt putting up em at 12-15 mph. IT drives me nuts. So I went ahead and purchased a BBK kit off of Ebay with the intention of upgrading the scoot. Before beginning installation, I have some questions/reservations about continuing. .. Hopefully some of u out there will be willing to take some of your time to help me out and alleve some of my worries.
I am not so concerned with top speed as much as increasing my speed up hills. Will upgrading to the bbk increase my speed up hills? Or will I still need to hit a hill at 40mph so I can maintain 20mph up the thing? Also, When I purchased this new from the shop, They said they pulled the factory"sealed" carb off and replaced it with an adjustable one... So I'm hoping I can put the BBK on and not have to fuss with the carb much? Also, is this upgrade going to massively effect my mpg? Any help would be much appreciated. I'm a little hesitant as this scoot runs cherry....And sometimes if it ain't broke don't fix it ya know? Mahalo for taking the time to read this. |
07-22-2014, 08:49 PM | #2 |
Join Date: Jul 2014
Location: Kapaa, HI
Posts: 2
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Let me clarify.. I'm not looking for any advice when it comes to installation. I am more than capable mechanically to swap the parts out... just looking for some questions answered before I do the upgrade from 49 to 100. Also... I didn't just buy a 150... because here you just register mopeds/scoots as bicycles if they are under 50cc... so no insurance needed.. Anyone out there done this swap? Can share experiences/outcome?
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07-23-2014, 12:43 AM | #3 |
Join Date: Sep 2013
Location: VA
Posts: 37
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I agree that if it ain't broke don't fix it. My three year old scoot is still so reliable that I wouldn't want to tear into it. Pretty sure I'd make it less reliable. I would experiment with the variator and weights before I tore down the engine.
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07-29-2014, 06:27 AM | #4 |
Join Date: Jul 2011
Location: Connecticut
Posts: 493
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Here's the deal with BBKs;
1) You'll have THE SAME top-end, you'll just reach it faster, you WILL NOT climb hills better or faster. 2) The 139 engine is NOT stable with a 100cc BBK, it is TOO THIN in the "jug" and prone to over-heating, GREATLY reducing longevity of engine. 3) It's not an easy job to do a BBK. In fact, I have seen only two people without engine/mechanical backgrounds succeed in installing a BBK. 4) Most BBKs are very low quality. There are good kits, like the Tadia and the Malossi, but most are serious garbage. 5) A BBK is a complete waste of time without all other mods done FIRST. A BBK will not improve your bike's performance without properly tuning the engine, carb, and CVT. Therein lies the rub; as you gain a whole lot of performance with modded ANCILLARIES. I'd do the ancillaries FIRST, then determine if you want a BBK.
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2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats. |
08-01-2014, 06:02 PM | #5 |
Join Date: Feb 2014
Location: las vegas
Posts: 100
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the above post is is very wrong, 2 stokes will not gain top speed but 4 strokes will, when we do a BBK the top speed is about 45mph, and climbs hills at about 35 instead of 15, especially on the zuma clone, its a heavy bike.
just make sure you are jetted correctly, if you post what size kit, cam , air filter, and other upgrades you will have ill tell you your exact jet size needed, usually for a 50mm piston (100 kit) its about a 90 jet. but that kit is actually 81.28cc
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2012 Jonway X 44mm Hoca crank 52mm Hoca big bore MMS big valve head raised ports, polished, milled .023 Hoca 26mm carb NCY titanium valve springs NOS wet nitrous system Holley fuel pump MMS variator Naraku CDI HT coil 4' Wheelie bar MMG stainless slip-on exhaust NGK "11" spark plug UNI filter 2014 Icebear Maddog too much to list http://mmsscooters.com |
08-16-2014, 09:54 PM | #6 |
Join Date: Aug 2014
Posts: 8
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i had same problem with the hills and after I had BBK installed it climbs hills perfect now
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08-16-2014, 10:43 PM | #7 |
Join Date: Jul 2014
Location: San Juan Islands, NW Wash.
Posts: 25
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Bbk kits scare me, I've thought about it but I might just play with the carb and intake to look for a little more power, post how it does if you do it though as I'm curious as well
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Lovin my lil china scoot.. taotao50 nothin aftermarket....yet 2014 TaoTao CY-50A.. VIP future champion |
08-20-2014, 02:28 AM | #8 |
Join Date: Mar 2013
Location: Vancouver, BC
Posts: 198
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Try lighter rollers first, that made a difference back when I had a 4t scoot. BBK will definitely help your hill climbing, but you will also need to change a bunch of other things along with it for it to run properly.
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2005 Yamaha BWS (Zuma) "Garfield" TP Black Trophy 70cc, Giannelli Reverse Pipe, 5g Dr. Pulley Sliders, Delta Clutch with Yellow Springs and Yellow Contra, Malossi Torque Controller, Naraku R-Vent Bell, NCY Adjustable Secondary Sliding Sheave, CF Reeds, Kege Analog Tach, Dual Headlight Mod, N.A. Rear Fender Delete, OEM Short Windshield. |
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