MCX TCV valve relocate.. Need opinions

[Dimebag]

Hi,

Im seeing some heavy ice buildup and almost every ride i seem to loose pressure at the end of the day. It seems like the valve is icing up.

Have tought about replacing the hose from the turbo to the TCV to be able to move the TCV closer to the exhaust. Anyone done this? And how did it work?

The ice buildup around the turbo is extreme, but i have only seen ice around the muffler a couple times..

What are your opinions on this? And does the valve have to be mounted vertically?

Pictures of your placement of the valve is much appreciated.

Thanks!

 

[thamax]

go to manual boost controller or the tunnel dump exhuast

 

[thistle]

or build a plate that covers the turbo....

 

[bjerrang]

Hi,

Im seeing some heavy ice buildup and almost every ride i seem to loose pressure at the end of the day. It seems like the valve is icing up.

Have tought about replacing the hose from the turbo to the TCV to be able to move the TCV closer to the exhaust. Anyone done this? And how did it work?

The ice buildup around the turbo is extreme, but i have only seen ice around the muffler a couple times..

What are your opinions on this? And does the valve have to be mounted vertically?

Pictures of your placement of the valve is much appreciated.

Thanks!

The TCV can only increase pressure not decrease.
Aprox 0.1bar at each 1000meters.
My guess it that your airinlet filter is clogged.

The problem with the TCV is that it blows engines, caused by to high boost. Mine is installed over the silencer.

 

[Dimebag]

The TCV can only increase pressure not decrease.
Aprox 0.1bar at each 1000meters.
My guess it that your airinlet filter is clogged.

The problem with the TCV is that it blows engines, caused by to high boost. Mine is installed over the silencer.

I know it does not decrease pressure, but if the TCV freezes up it will not increase the pressure as you go up in elevation. That means that if you run 0.4 bar at sea level, with a frozen TCV you'll see the same pressure at 2000 meters instead of 0.6 like it should be..

I moved the TCV close to the silencer and it seems to work very well.. No icing at all on the valve..

But it still does not increase pressure as much as i hoped.. Maybe the valve does not work properly in such low elevation changes... I ride from 500 to 1500 meters, and see no change in pressure.
Except one time when it went up 0.2 bar from 500 to 1500 meters.. Havent seen this change ever since..

And the air filter is not clogged.. I run a snorkel kit and watch out for icing on the filter.

 

[bjerrang]

Not heard about the frezing of the tcv causes it to halt. Only max boost. But somebody has to be the first. try to swap tcv and/or mcx box.

 

[Dimebag]

I called Erik Marklund about the problem and he told me that the TCV can freeze, and if that happens it will most likely stop to increase the pressure as you go up in elevation.

The TCV itself should not increase the boost enough to blow the engine, to do that it has to freeze in the fully "closed" position. But icing in the hose between the turbo and the tcv could have this effect..

I've had this hose freeze before, and the boost gauge suddenly read 1.8 bar..

With the TCV frozen it reads 0.2 instead of 0.5 like it should.