Originally Posted by afm

The shape and size of the turbo scoop will affect the gasification of fuel. i.e. small size = high flow and will improve gasification but reduce the flow speed.

If the turbo scoop has been cut beyond the sweet point, fuel will be excessive and stay in the lower chamber. That is the case of flooding at low rpm...

The size of the crank hole and scoop is directly related to crankcase volume , size and number of transfer ports, and it will affect positively or negatively the maximization of gas mass flow and speed, from the case through the ports and into the combustion chamber.

So if badly done there will be losses and no gain. If properly done, even minimal gains will be gained.

AFM

Originally Posted by Grinder

Here is a short video of one of my Novarossi 35+21's on the dyno.

http://www.youtube.com/watch?v=htaW_...qtwPWmdNd9huyq

Originally Posted by FaanP

Why is everybody so quiet on the M21? I'm nearly done with my bench break-in and I'll put it on the track early next year.

Anybody racing it yet?

Originally Posted by Grinder

All the reports are very positive. The engine is fast. You will have to keep us posted.

Originally Posted by FaanP

I ran 2 different motors the past week, the M21 and a Murnan 35+ and to be honest - there is not much difference between the 2. The M21 is a monster!!

Originally Posted by FaanP

I ran 2 different motors the past week, the M21 and a Murnan 35+ and to be honest - there is not much difference between the 2. The M21 is a monster!!

Originally Posted by Grenade10

So what you are saying is that the M21 is a match for the modified 35+21. How is the fuel economy of the M21? My Munan 35+21 is a little thirsty. What header and pipe were you using with both engines? Size of track, lap times.

Just wanting to compair to where I will be running this summer.

Originally Posted by FaanP

Track: Quick track with long sweeping corners and one tight section - not to sure about the length.

Running both engines with the Novarossi 2015 pipe with medium conical header.

The fuel consumption on the M21 is better.

The bottom end power of the Murnan 35+ is a bit better but the M21 match the 35+ through mid and top end power - or that is how it feels to me.

Can't tell you about lap times since both days were practice days with no timing.

Originally Posted by staikosn1

Good evening!
Grinder how you compare RB T10 RC - T11 RS??

Originally Posted by FaanP

Track: Quick track with long sweeping corners and one tight section - not to sure about the length.

Running both engines with the Novarossi 2015 pipe with medium conical header.

The fuel consumption on the M21 is better.

The bottom end power of the Murnan 35+ is a bit better but the M21 match the 35+ through mid and top end power - or that is how it feels to me.

Can't tell you about lap times since both days were practice days with no timing.

Originally Posted by Grinder

The T11RS has more bottom end power than the T10RC. Both have very good top speed. I would go for the T11RS.

Originally Posted by staikosn1

Thank you for the reply!!
Which pipe do you suggest?