Wagner EM to wastegate adaptor

[malncol]

Iam running a wagner EM with the little adaptor from the four 8mm studs to the V band wastegate and iam having trouble sealing/keeping the studs and nuts tight.
I know there is no gasket and the steel on steel is what it relies on to seal but how do you keep it tight
thanks
mal

[GazzaG60]

do you use brass type nuts, exhaust nuts basically.

should work fine. mine dont come loose on any of the bits

opr use some loctite.

[malncol]

think they are steel exhaust type nuts, dont think loctite would handle the temp. Also should have added its running antilag not that it should change things to much. Just thought id see if its just me or if its common prob??
thanks
mal

[andy10v]

Are the nuts you are using lock nuts?

Normally have a slit, or staked/deformed last thread.

[GazzaG60]

ok temps will be higher with anti lag. mine are a brass type stuff not brass but best description i could give. they are specific for exhaust.

the 16v used a plasticy type one instead, they never came off either. maybe soem type of ceramic outside metal inner.

had that issue on my scirrocco the nuts would come off after a few miles.

the ones i use look like a normal nut but the top mm or so is round and smaller than the main hex part if that helps.

sorry for poor description

[malncol]

The nuts iam using are locking , they have a locking last thread on them. Maybe the studs are poor qual and are streching with each heat cycle , ill try new studs and nuts and see what happens?? thought it might have been something that someone had fixed before, cant do anything until i get the close box back in anyway
thanks
mal

[quattro-nick]

there is an exhaust paste that you can rub between the two parts

http://www.maniflow.co.uk/index.php?view=product&product=1360

I would also measured with a flat bar the two parts to see if they are bend,curved

[malncol]

The manifold is flat but the adaptor is curved slightly maybe due to the welding when made, i thought that was how they are supposed to be as it would force some preload onto the joining faces. I can get it machined flat if thats what it should be??
thanks
mal

[GazzaG60]

both mine are flat all surfaces on my setup, although not adaperbaased like yours are just cnc flanges made for my application

[inne3quattro]

The nuts iam using are locking , they have a locking last thread on them. Maybe the studs are poor qual and are streching with each heat cycle , ill try new studs and nuts and see what happens?? thought it might have been something that someone had fixed before, cant do anything until i get the close box back in anyway
thanks
mal

Close box Mal !!! Tell me more 😃

[newsh]

There was a group buy on WG flange gaskets a while back, try PM Rusty on here.