my very fast gx390 minibike!!!!!!!

[boostdoctor]

First time to the dragstrip with my modified Byrd Wren.:smile:
https://www.youtube.com/watch?v=uvojZw5JRU4

 

[Outlaw Ace]

That is fast, congrats on a successful first time out.:thumbsup:

 

[Moedog07]

Give us a run down of what's inside the motor?

 

[boostdoctor]

Give us a run down of what's inside the motor?

Welded head with huge ports and valves, modified stock rod, custom hand ground cam(.350" lift), 39mm carb and custom stainless exhaust.
We are two tenths off the record for fastest minibike with disc clutch. We will make another attempt on Friday.

 

[boostdoctor]

Oh yeah, Modified Kohler vtwin rocker arms, shortened Chevy push rods and Suzuki Hayabusa valve springs.

 

[MB165]

sounds good :thumbsup: