Twister Engine

RC Trucks Home Page
Home Page of RC Trucks with many more links to other pages.

Go Carts
Full scale go cart fun!

Fast Go Carts
How fast are fast go carts?

Racing Go Karts
The thrill of racing!

Off Road Go Karts
A look at off road go karts.

Honda Odyssey
One of the original off road karts that started it all years ago.

Twister Hammerhead
An example of a popular off road go kart.

Twister Hammerhead Engine
Engine design is based on Honda GY6 engine.

Twister Hammerhead Parts
Where to find parts.

GY6 Engine Mods
Some ways to increase the power of a 150cc GY6 engine.

Dazon
Manufacturer of  popular off road go karts.

Carter Go Carts
A popular go cart company.

Carter Interceptor GTR250
An exciting off road go kart.

Manco Go Karts
Another popular go kart company.

Build Your Own Go Kart
Ways to build your own go kart.

Go Kart Engines
Choose the right engine for your go kart project.

Site Map
Directory showing all pages on this website.

The Twister Hammerhead karts are powered by a 150cc engine based on the Honda GY6 engine design.  The GY6 engine was originally designed by Honda in 125cc form.   Now this copied GY6 engine is offered in 150cc.  The Twister Hammerhead engine is one of these GY6 based engines that are a copy of the original Honda GY6 design.  This engine does a surprisingly good job moving such a big kart around.  Sure, a little more power would always be nice (when is it every enough!), but considering the small displacement of this GY6 based 150cc engine, it really is impressive how it can move the Twister Hammerhead around like it does.   Below are a few pictures and some comments about the Twister Hammerhead engine design. 

Honda GY6 Engine Design - Head & Cylinder Exposed

One of the first things that is noticeable underneath the valve cover is that the rocker arms appeared to be high strength forged pieces.  This was apparent because of the surface finish on the rocker arms which looked to be from the forging process.  The die cast aluminum cylinder looked very nice, and it has a cast iron cylinder sleeve which should give the GY6 engine long life potential as far as cylinder bore wear is concerned. 

GY6 Engine with Cylinder Head Removed

The camshaft rides on high quality double ball bearings which is very nice.  The quality of the GY6 engine components looks to be good.

Piston and Rod of Honda GY6 Engine

The piston and rings also look like decent parts.  The connecting rod appears to be another high strength forged part.  The Honda GY6 engine crankshaft is supported by big ball bearings (very nice). 

This engine can spin up to 9000+RPM!  This is a testimony in itself to the good design of this engine.  The Honda GY6 engine design has an oil pump and the pressure lube system supplies the lubrication needed to help the engine survive at such high RPM's.  In the picture below with the flywheel side engine case removed, you can see a small sprocket at the bottom right that is chain driven off the crankshaft and it appears to spin the oil pump.  In the upper left side, is the gear set up for the electric starter. 

Side Case of GY6 Engine Removed

Overall, the Honda based GY6 engine in the Twister Hammerhead is impressive.  It is a relatively powerful little 150cc engine.  The Honda GY6 engine design appears to be good, and with proper maintenance it should last a long time (especially keeping air filter clean).  This little Twister Hammerhead engine does work very hard - which makes it all the more impressive when you consider how small the 150cc engine displacement really is!

RC-TRUCKS.ORG 2004-2008 ALL RIGHTS RESERVED