Engine for super nutro rs4

[SpeedFreak15]

Can you put a .21 size engine in the hpi super nitro rs4?

 

[DirtRacinFool]

With the proper mods you can. Steve Pond at RC Car Action magazine did it a couple years ago.

 

[DirtRacinFool]

I found these links to the article that RCCA did on the build of they're 100 mph super rs4, it's in 2 parts.
http://www.rcnitro.com/articles/SuperNitro1.asp
http://www.rcnitro.com/articles/SuperNitro2.asp
They also have videos of it in action, its at the bottom of this page.
http://www.radiocontrolzone.com/cars/video.asp