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 RC test mule 
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Newb
Newb

Joined: Mon Dec 25, 2017 11:03 pm
Posts: 8
Post Re: RC test mule
Hello Chris

Thank you for the last e-mail (Dec 29th , Fri) for the list of parts and I will purchase them soon. Are you selling 158cc Nikasil bore finish BBK now instead of the 155 BBK (58.5 mm) ? I would be interesting in the 158 cc BBK kit (59.0 mm piston). Are the KOSO roller rockers better made ? I wonder if up grade to high torque starter would be better than stock one when going to bigger piston size ? I finally found the way to be a member of this great Zuma forums !!!

Zuma lady 59


Thu Jan 04, 2018 10:34 pm
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Joined: Tue Jul 06, 2010 11:06 pm
Posts: 2496
Location: Taiwan & Hawaii
Post Re: RC test mule
zumaseniorlady59 wrote:
Hello Chris

Thank you for the last e-mail (Dec 29th , Fri) for the list of parts and I will purchase them soon. Are you selling 158cc Nikasil bore finish BBK now instead of the 155 BBK (58.5 mm) ? I would be interesting in the 158 cc BBK kit (59.0 mm piston). Are the KOSO roller rockers better made ? I wonder if up grade to high torque starter would be better than stock one when going to bigger piston size ? I finally found the way to be a member of this great Zuma forums !!!

Zuma lady 59


great to hear from you!

the 59mm is currently out of stock and only 58.5mm is in stock.
the koso roller cam kit is better but you need special tools to change out the valve springs. best to take it to a professional shop or mail me the cylinder head and i can install it for you.

for stock crank shaft you do not need a high torque starter. it's only for stroker crankshafts.

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Fri Jan 05, 2018 3:29 am
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