Customer Praises DMW for a GY6-50cc Build and Dynojet Tune!

Recently a customer came to us with issues he was having with his almost new Peace Sport 50cc scooter. He had bought 2 of them and one was performing normally, the second scooter was very sluggish.  He had gone to several places and could not find someone that would work on it until he was given our information by our good friends at Cycle Gear, so he contacted us. After a thorough inspection we found the clutch was over heating, and melted the grease onto the bell and contaminated the shoes, and also engine compression was a little on the low side for a new engine. After much conversation and figuring out his needs we made recommendations on what parts would be needed to tune and satisfy his power needs. We went with a full set up of hi performance parts that would all work together smoothly. In first order we chose Dr. Pulley for the clutch and variator they are very high quality hi performance products and can be tuned very precisely. That fixed the slipping clutch problem which you can see the results on our dyno chart torque reading at the bottom of the page.  We also wanted more power so we addressed the engine.


Upon inspection of the cylinder head we found the exhaust valve looked over heated. I've seen this damage before as a byproduct of using fuel with ethanol. Since it was easier to drop the engine to perform the work we chose to install a new 52mm big bore kit and a hi flowing head, along with a hi performance carburetor, intake and exhaust. This allowed us to be able to tune the scooter on our Dynojet SD12 without any restrictions.

When it was all said and done we had doubled the horsepower and increased the grip of the clutch all across the power range sending more power to the wheels! His top speed went from 43mph to 54mph!

I was thoroughly impressed with the performance of we were able to achieve with these combinations.  Our customer was most grateful! Here is what he had to say:


"DMW is a great partner to have if you own a scooter. Junior completely rebuilt my scooter and turned it into a brand new incredible machine. His efforts to perfection were noticed and appreciated. Not only did DMW build me a new scooter they also gave me a piece of mind for future scooters for my family. I am very thankful for the work Junior does and will do for me in the future!" - Cody Ramthun