Any suggestions for upgrades?

[ImpulseRocket]

I was looking at the bbr tuning f2 thrust pipe.

I would say to look at the CDH67 pipe in that instance. It's not perfect, but a better design than the f2 in terms of function

 

[DAMIEN1307]

I would say to look at the CDH67 pipe in that instance. It's not perfect, but a better design than the f2 in terms of function

Do you mean like this one Rocket???

Amazon.com

 

[DieselTech]

Do you mean like this one Rocket???

Amazon.com

Wow them have came up in price.

 

[Chainlube]

I was looking at the bbr tuning f2 thrust pipe.

There is a debate.

Is a real mz65 pipe really all that and worth it

I have an f2 thrust pipe rn and I'm getting about 37 mph and I can't seem to get over that no matter what I do would this mz65 put me over the top

motoredbikes.com

 

[DieselTech]

Running a reed valve without high enough intake duration or a windowed piston can cause a decrease in power due to the intake restriction.

Rocket you mentioned a high enough intake duration for running a non windowed piston. What kind of intake duration would a guy be looking at to do so. Thanks.

 

[ImpulseRocket]

Do you mean like this one Rocket???

Amazon.com

Yep.

 

[ImpulseRocket]

Rocket you mentioned a high enough intake duration for running a non windowed piston. What kind of intake duration would a guy be looking at to do so. Thanks.

Depends a bit on the engine, but between 140 to 150 degrees is getting aggressive enough that you can run piston port without a reed, but it may be able to run with one without taking a hit in power. Past 150, It starts to become more necessary. The blowback becomes significant enough that you start to see a loss in power, thus the reed helps recover it.

 

[DieselTech]

Depends a bit on the engine, but between 140 to 150 degrees is getting aggressive enough that you can run piston port without a reed, but it may be able to run with one without taking a hit in power. Past 150, It starts to become more necessary. The blowback becomes significant enough that you start to see a loss in power, thus the reed helps recover it.

Ok thanks, it's a 49mm steel bore engine that I raised the jug almost 2mm then decked the cylinder. .7mm squish. I'll just have to try a reed just to see what happens. It runs real good now, so that will give me a idea, if it falls on its face with reeds & non windowed piston. Thanks

 

[ImpulseRocket]

Ok thanks, it's a 49mm steel bore engine that I raised the jug almost 2mm then decked the cylinder. .7mm squish. I'll just have to try a reed just to see what happens. It runs real good now, so that will give me a idea, if it falls on its face with reeds & non windowed piston. Thanks

In my own experience with reeds, I first installed one on a lightly ported 66cc. I neither gained or lost power. It felt no different. The only real benefit I got was a mild increase in torque down low and a less oily air filter long term.

 

[Gordy]

I would say to look at the CDH67 pipe in that instance. It's not perfect, but a better design than the f2 in terms of function

I'll probably get that one then.