Asmund,


I did write this before.

The 15,000 claim is not even for the Jett .76L BSE engine....
It requires 2.04 HP to spin a 12.25x3.75W this fast.

Lies are not true claims...

This is not within the capability of any engine I can think of right now.


My break-in thread deals with 'when can you start using the engine normally', to signal the end of the break-in process.
MVVS engines do gain a lot of additional power; around 600 RPM within the 6-10 hours after the break-in.

Your engine seems to be too low on power, for it to be a case of needing more break-in time.

Something is out of adjustment and most likely it is the tuned exhaust.


Do try to find a way to measure RPM, in daylight, without using the torch/flashlight.
It can also be a case of an inaccurate sampling.

Did you try to tach another engine at the same time and got a more positive result?