Freestyle Rad Dudes Product Review of the C4 Chamber By NYNJA

[LegDragger64]

I tied chamber back to cases with heavy zip tie around stinger , back to en eyelet bolted to flywheel cover. Also put a block of rubber below hose going to water box to support chamber and keep hose from pulling it down. Could also resort to springs if needed. Would need to weld small ring on chamber and one on headpipe. Don't think it will be needed.
During testing , chamber never got anywhere near hot enough to sizzle water. Top screw was shut so need to close bottom some. That means there are more RPMs and mph possible but I don't want to rev this stroker that hi due to piston speed. Will go to taller prop.
There is no telling which chamber you had Gil. Lots if test pipes were made by TNT.

I would like to see more versions of this pipe made. Maybe a little longer. I don't need 7800 RPMs. Can't afford a new crank three times a year.

 

[scottie mac]

Ralph,

Let her rev!!!!!!!! We ran those things are 7850 plus with no issues. Those RAD cranks are so much better than stock. You won't have to rebuild anymore than once a year. Plus, if you go with a bigger prop, you will load the motor more which creates heat and detonation. Ask TJ, he would much rather you rev it than lug it.

Scottie

 

[LegDragger64]

Running 112 octane so should not be any detonation.
One mans season could be another mans month on engine hours.

Piston wear is also an issue due to availability. Riva still make an 85mm flat top but 85.5 and 86.5 have been discontinued by riva and R&D. Not sure how long pistons will last at those RPMs Will be re ringing often to help save them.

 

[Twinturbostang]

Ok we took the time to make the C4 fit on a X2. Ski has a 750, single 44, big hub swirl prop, and had a SJ chamber before.

I'll say it again, I'm shocked at the power this thing makes. It woke chews ski up. Much harder and nicer snap and it pulled to whole way to top end.
One crazy thing was its quieter than it was with the alum SJ chamber. (that's a good thing trust me)

Chewy rode it down the river first and he pulled up to the boat and said "wow this thing has more power" then we got to the island and I could talk to him more. He said the out of the hole power was way better and it felt like it has more power everywhere. "worth every $" Now chewy rides this ski like every day so he knows it better than anyone.

So I took it for a ride and man it's a brand new ski. For the 750 guys this is a hot ticket.

 

[Joker]

Will one fit in an fx1?

 

[Twinturbostang]

I would think it would. But I don't have a fx1 around to try

 

[madness maker]

For the record, it Fits in a superfreak.

 

[feartheride]

You sure can any time. If it wasn't for you I wouldn't even have this motor or have bought one of the other three in existence. Will be sending the second motor to judge soon for lo profile PV update and 85mm setup. The second motor will eventually be installed in Hydro hull if and when the 4stroke motor blows . Due to the fact the Hydro gas tank is behind the motor , I will be able to fit it with power factor pipe with room to spare.

what motor are you referring to

 

[madness maker]

Any news? You think this will fit in a Superfreak with a stock gas tank or am I going to have to start shopping for jaz tanks? Any news on a Dasa motor, inquiring minds want to know. I'm really interested but don't wanna be a guinea pig paying full fare.

its a little tight, but not that bad,im still in the build process, i'll post updated pics of chamber in the freak when complete.

 

[Twinturbostang]

The Rickter after a long time down now has a new C4 with a Rickter/SJ Rad dudes mod.

 

[madness maker]

nice!, loving the c4 chamber in my new freak.

 

[naithgroves]

Have mine fitted up tuning this week. Will be fitting advent TL and fly wheel next week keen to see what it does

 

[Therizzlejebus]

Any ideas how this pipe would do on a ported 650 in an x2?

 

[Twinturbostang]

There is a review on pwctoday for it. And we have the x2 kit on our site. It's a tight fit but we made it work

 

[jo5hi3]

getting ready to put this pipe into my ski....ss850...i have heard that the pipe needs to run super dry to make power? is this ture?

 

[liquidforce5010]

2 questions im looking at the pics of the c4 on the x2 and it looks like its touching the gas tank...it def does on mine is that gonna melt the tank? also yall sent the bracket but what are u mounting it to

 

[Twinturbostang]

You have our Kawi bracket?

 

[liquidforce5010]

ya

 

[Quinc]

Bump! Everyone still loving these?

 

[Twinturbostang]

Great chamber but too bad NYNJA no longer has them.