i would have to charge alot more to run each engine 1.5 gallons which is usually around the area where this happens but the r2r is 3/4 to 1 gallon of fuel of a proper run in . i dont rev the engine out really hard during this time but usually tune the engine in good enough to run races

Ok sweet. I just didnt' know if I should expect it or not. Thanx man.

Hey Monty, on the P5X head buttons there are dimples. On my standard button there are 3 in a row and on the turbo's there is 2 on one side and 3 or 4 across from it. Do the 3 go over the exhaust port? Also, what is the reasoning for this? I was thinking it was for indexing the plug in the chamber but I'm not really sure. Thanks!

no reason really , it is a cylinder which doesn't really need any indexing but novarossi installs the most dots towards the exhaust

Ok thanks!

im getting a plus for and exhaust set ready to race!!!! Cant wait to get this engine and pretty much be ready to go to the track!!!!

Monty are you still finding the Nova 41005 ] header to work pretty good with a Dyn053 pipe?

ya , or just use the ofna one

Monty my mill showed up today and is in my 808 and ready to rock. Gonna run it bit tommorow to make sure it's good for the weather here. Thanks a bunch for the KILLER service! I'll be leaving a nice note on your site.

thanks matt


enjoy , call if you need anything

drake is gonna be doing a tutorial on how to tune the new carbs sometime soon

Got a tank through the 21-5 this evening finally. After 10 minutes it temped 235-240. Wound out real nice without really pushing it too much. I felt "electric" smooth!

It's supposed to be 90's and hmuid as heck tomorrow. Any suggestions Monty?

little rich on the bottom and dont drop your idle too low


what did you think of the engine

plus 21-5 is still my favorite buggy engine