Hello,
Progress has been made to the 4wd GP drift machine
Upper is 95% complete.
It is necessary to use liquid polish to acheive a shiny surface.
after polishing, it will be 100% complete!
The engine for this car was hibernating for a long time.
There was a slow movement when rotating engine...
It is dirty and needs to be cleaned
needs to be replaced
I took a closer look at the so called "engine sleeve"
Engine ports on low cost engines are straight cut that keeps a sharp edge.
To improve gas and air flow, it is necessary to make changes.
Will the changes be positive? negative?
There has not been a test yet.
..DO NOT COPY UNTIL I HAVE TESTED
Also, when air and gas flow intake is increased..is it good to also improve exhaust??
I think so..
To improve exhaust, modifications have been made.
From this.
To this.
I am eager to try the engine
once the engine is assembled, it is like this
Engine is:
Vertex VX.16
it is not a common size
.12 .15 .18 .21
Here is a mach-up of the machine.
After attempting to assemble I notice..
...I do not have any bolts or hardware to use 
When new parts and hardware arrive I will make another blog
I hope you enjoy the self-made 4wd GP drift machine update
Have a wonderful day