Modding a Honda clone Engine??
- Thread starter deezildennis
- Start date
lil Ike, Home Alone, Drew, and my Avatar bike are the fastest gasoline minibikes in the alley. We all run the 1.2 ratio rockers and small aftermarket carbs. Drew runs a PZ22 carb (22mm) from me, and the others are tillotson gas carbs. All have the timing advanced, with ported small chamber heads. We all are runing stock size valves, and a stock cam. All of these bikes are pretty close between 66-68mph.
I sale the 22mm carb, intake, rockers, and I even have a Zama/tillotson carb.
The 22mm carb works perfect on the 6.5hp version clone. That's what most of the kids run, because they get them from me. I get the rockers from a stock class cheater I can't name. But they make your motor sound a bit radical. They really help being that Hondas, and clones only have a .227" max cam lift. Which is way smaller then the briggs 6.5hp .255" lift.
I can tell you how to advance the timing, but if you don't have the correct tools you might screw it up. You can always buy a offset key that has already been cut. NR-Racing sells a lot of parts, but there extremely pricey.
You can get the tillotson carbs brand new from E.C. but they are a bit expensive. Usually for the carb, intake, and velocity stack it's around $160. Two models work great HL357A, and HL334wx. It's best to find one used, or new at a deal. The most expensive thing you will need is a billet rod for safety.
The 22mm carb works perfect on the 6.5hp version clone. That's what most of the kids run, because they get them from me. I get the rockers from a stock class cheater I can't name. But they make your motor sound a bit radical. They really help being that Hondas, and clones only have a .227" max cam lift. Which is way smaller then the briggs 6.5hp .255" lift.
I can tell you how to advance the timing, but if you don't have the correct tools you might screw it up. You can always buy a offset key that has already been cut. NR-Racing sells a lot of parts, but there extremely pricey.
You can get the tillotson carbs brand new from E.C. but they are a bit expensive. Usually for the carb, intake, and velocity stack it's around $160. Two models work great HL357A, and HL334wx. It's best to find one used, or new at a deal. The most expensive thing you will need is a billet rod for safety.
The Walbro PZ slider is a nice carb- around $100. I bought a new (NOS) 26mm Mikuni slider off ebay with the mounting flange cast in. I made a cable- thing works FANTASTIC on my 8hp Flathead Tecumseh. 2 years ago I bought a brand new 6.5 hp briggs Intek Pro OHV engine. Got a heck of a deal on it. I never ran it but turned around and sold it to a coworker who was building a barstool racer. It would fall on its face due to the "emissions" carb. He bought a new Walbro PZ slider carb and adapter (carb used on a Briggs Raptors)- $100 for carb, $10 for adapter. He claims the engine runs like a complete different engine. Very very fast. For what its worth I have a 6.5hp JiangDonger engine on my daughters TrailBronc. Runs real strong! I was pleased that the carb does not starve the motor as the Briggs Intek did AND a 5hp Honda GC residential engine I owned did as well.
