Exhaust Leak at flange / pipe junction

[PistonBroke]

I have a wee exhaust leak at the junction shown here. Is there a way to seal this up that I'm not aware of? The pipe flange has a small internal male lip which fits into the turbine housing casting. Mitsu 16T on an MCX Apex. Or maybe I shouldn't worry about it?

I pressure tested last night and this is the only leak in the whole system.




Thanks,
PB

 

[NM]

I would think once it gets hot and expands the pipe, that it would not leak. At least not enough to worry about. Or maybe this is a good excuse to upgrade to a 19T.

 

[PistonBroke]

thanks

Right on - I'll put the rest of the sled together and fire 'er up, see if the leak quits.

Cheers

PB

 

[zebiraross]

Isn't there a gasket in there? If there isn't, that's what I would be looking for .

 

[PistonBroke]

gasket

There is no gasket in there - should there be one?

Thanks guys,

PB

 

[NM]

There is no gasket in there - should there be one?

Thanks guys,

PB

I don't use gaskets from header to turbo. I think it's just more to go wrong, and have never had a problem.

 

[Motleyone]

I use a metal crush type gasket and Stage 8 locking fasteners. I have seen is done both ways though. GL

 

[zebiraross]

I would use a gasket. That's what they are for-when the flanges are not 100% true. That's why Yamaha use gaskets between the header and the exhaust ports of the head. And if you have a leak now that means your flanges are not true, and the longer you have a leak the worse you will warp the flanges.

 

[PistonBroke]

I use a metal crush type gasket and Stage 8 locking fasteners. I have seen is done both ways though. GL

OK sounds like a plan to me. Do you have a source/part # on that gasket?

Thanks again guys, appreciate the help!

PB

 

[Sammy]

There is no gasket at that joint! There are liquid gasket materials available for exhaust joints such as these but i find them difficult to clean whenever the joint is disassembled. I simply clean the two joints and run them dry. In fact both my turbine housing and exhaust joint are being ceramic coated right now and will be assembled dry. Unless there is a noticable leak while running (run your hand around to feel for leaks.... while the exhaust is still cold) then i wouldn't worry about it. Most exhaust leaks that require attention will leave soot tracking at the leak and will be quite visible.

 

[BigFish BC]

yes there is gaskets for the flange i dont use one like nm & have no probs but use too. just google it you will find lots

 

[TTE]

Mcx don't use a gaskets between the turbo and exhaust pipe flange on their kits. There is no need if all parts are in a good condition due to the shape of the exhaust pipe flange and inlet of the exhaust side of the turbo.

If you have a leak - make sure that the turbo crate/basket is not cracked or turbo is loose - and causing stress on the turbo/flange conection due to the weight of the turbo. I would also check all exhaust pipes and look for pipes that could be twisted out of shape/ heat wrapped (sorry for the bad English)