Author Topic: Differences between the gy6/gy7 and engine found in the sym fiddle 150  (Read 284 times)

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Offline Mat1998

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Hey guys, so I will definitely replace my big boy rct and retro with a sym scooter when the time comes. Don't get me wrong I absolutely love my big boys and I will ride them until they literally fall apart and then fix them :cager: but in the next 10 years or so when the time comes to replace them I'll go the sym route, but I was just wondering, what is the differences between the engines sym uses in there 150s like the fiddle and the gy6/gy7 engine found in Chinese scoots like the big boys and go Motos and jonways etc?


Offline Stanthescooterman

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Hi Mat, which specific differences does your question relate to, i.e. what is the list of aspects that you wish to compare?
Previous bikes & scooters:
BMW C600 Sport
Kymco Grand Dink 250 (300),
BMW F650GS Dakar,
Gilera Runner 180,
Kymco Agility 125,
Kymco TB100,
Kymco Heroism KH125,
Honda CBX550FII,
Suzuki RG50 Gamma

Offline Mat1998

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Basically what im trying to find out is are there plenty of spares available and are some parts from the gy6/gy7 compatible with a sym scooter


Offline SA SCOOTERS

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Basically what im trying to find out is are there plenty of spares available and are some parts from the gy6/gy7 compatible with a sym scooter
99% the same. only slight cvt casing changes between gy6 and gy7.
www.sascooters.co.za 
  
In the beginning God made the heaven and the earth. The rest was made in China.
Loncin 150 Racer, Honda 600XR, BMW R1100S, HD 1340 Electra Glide and a Fishing Kayak...What more can a man ask for?

Offline Mat1998

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I know the difference between the gy6 and gy7 but what is the differences compared to the engine that sym uses

Offline Stanthescooterman

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Mat, where are you going with this?
What is the thinking behind these questions?
Maybe that will help us to answer your questions more specifically.
Previous bikes & scooters:
BMW C600 Sport
Kymco Grand Dink 250 (300),
BMW F650GS Dakar,
Gilera Runner 180,
Kymco Agility 125,
Kymco TB100,
Kymco Heroism KH125,
Honda CBX550FII,
Suzuki RG50 Gamma

Offline Stanthescooterman

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Basically what im trying to find out is are there plenty of spares available and are some parts from the gy6/gy7 compatible with a sym scooter

There seem to be lots of SYM dealerships around and one would hope that they are well stocked with spare parts.

Some Chinese scooter parts will fit on SYMs, and vice versa, some wont. Drive belts don't - AFAIK.
Previous bikes & scooters:
BMW C600 Sport
Kymco Grand Dink 250 (300),
BMW F650GS Dakar,
Gilera Runner 180,
Kymco Agility 125,
Kymco TB100,
Kymco Heroism KH125,
Honda CBX550FII,
Suzuki RG50 Gamma

Offline Mat1998

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  • Town: Centurion
  • Whatsapp: 0788630709
Cool, thanks!


Offline sharkcontrol

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If it is any help i also ride the Bigboy Revival and i always thought that this model had the GY6 engine.I suspect it is the GY7 engine though because my engine code is BN157QMJ.Anyways i rebuilt the engine recently and all the GY6 parts i bought fitted correctly.A bit strange because various sites do say the  BN157QMJ should actually be the long case motor with the bigger-16" wheels.
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Offline SA SCOOTERS

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That is just the thing with all these chinese, taiwanese, chinglish, etc scoots.
Many of the parts are interchangeable. They all copy from each other. Most of them copied from more expensive brands, etc.
Mostly its the plastics, etc that differ...ie the look and the style.
One can reason that the one is better quality than the other.....manufacturing process and or materials used, but in the end the parts are similar.
www.sascooters.co.za 
  
In the beginning God made the heaven and the earth. The rest was made in China.
Loncin 150 Racer, Honda 600XR, BMW R1100S, HD 1340 Electra Glide and a Fishing Kayak...What more can a man ask for?