View unanswered posts | View active topics It is currently Tue Nov 21, 2017 3:56 pm



Reply to topic  [ 3 posts ] 
 engine spec, 
Author Message
Newb
Newb

Joined: Sat May 28, 2016 1:10 pm
Posts: 8
Post engine spec,
hi fellas, can someone please clarify, i have looked over the engine spec for the 125cc zuma / bws and its saying 4v...
is this correct, it looks a lot like a 2v engine to me

Engine[edit]
The engine is a 123 cc 4-stroke SOHC 4-valve with 10:1 compression. The fuel injection system is similar to the ones installed on most Yamaha bikes, and uses a 24mm injector. The exhaust manifold comes equipped with an O2 sensor. The rated power output is close to 11 bhp (8.2 kW).[citation needed] After the break in period, the Zuma 125 can achieve a maximum speed of around 61 mph (98 km/h).[citation needed]
This same engine (minus the fuel injection) is also used in Yamaha's Cygnus-X scooter. There is currently an established aftermarket with numerous parts that allow the engine to be enlarged up to 287 cc.[citation needed] Depending on driving style and riding conditions, the Zuma 125's fuel economy is around 89 mpg-US


Sun Jun 05, 2016 12:57 am
Profile
Scooterologist
User avatar

Joined: Thu Jun 13, 2013 2:46 am
Posts: 35
Location: Ottawa Canada
Post Re: engine spec,
the head on a stock z125 / bws 125 engine is 4 valve. 2 intake 2 exhaust.

_________________
2011 BWS-125 - Michelin Power Pure SC (oem sizes) / GJMS Low Down Forks / GJMS GP2 40mm lowered rear shocks / GJMS 260mm Rotor with NCY Caliper Adaptor / TST Variator / HARDY low handlebars / KOSO Clutch Bell / KOSO clutch / Daytona Kevlar Belt / NCY bearing kit / 1000 RPM Contra Spring / Zubiku : Carbon CVT Cover + Airbox Cover + Short Rear Spoiler / Simota Air Filter / Dolphin CNC Drain Heatsink / KOSO Afterburner Tails / Smoked Signal Covers / Race Fan / GJMS CNC Speedo Cable holder / dual 15w CREE LED headlights with ecode clear headlight housings.


Tue Jun 07, 2016 10:54 pm
Profile
Newb
Newb

Joined: Sat May 28, 2016 1:10 pm
Posts: 8
Post Re: engine spec,
threshold wrote:
the head on a stock z125 / bws 125 engine is 4 valve. 2 intake 2 exhaust.



thanks threshold


Wed Jun 08, 2016 9:01 am
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 3 posts ] 

Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware for PTF.