JonW

On another car i own I have a Garret turbo with water cooling and one of these pipes seems to be leaking coolant from the thread of one of the water pipe fittings in the turbo body, These are all new fittings as teh old ones were knackered...
So I was mulling thru solutions and the most obvious is PTFE tape. I know this is safe on hot water connections in the house, but anyone know if im just wasting my time trying to seal this joint with that product?

Alternatively anyone got any other ideas?

David_Wallis

Interesting.. maybe better of with a thread seal though..

I was thinking just the same thing the other day...

David

Pavlo

PTFE starts to fall apart at 220degrees, but soft from 180degrees.

I don't think the core will be hotter than this due to the water in it (although some will boil off when you stop).

Best bet is using the soft copper washers with a banjo bolt, and you should be able to do the sale with a parallel threaded JIC fitting.

Do you have any seals at all in place?

Copper seals can be given a new life with annealling, which might do the trick if you can't get new ones

Paul

JonW

Thanks for the responses guys!

David - Yes ive got some threadlock n sealer I could use I spose but I'm always worried i'll never get the damn thing off again with that stuff - but then to be honest I shoudlnt need to should I!??! :-)

Pavlo - the fitting ive got is (i think) one which is a parallel JIC fitting, its that or its tapered - i cant really remember. but its a male to male adaptor which is screwed into the turbo housing, then on that ive got a 90 deg bend which is a female fitting. i'm not sure which is the leaky one to be honest, as i cant get to the hoses yet. i can see from below that there is dried light blue tell tale marks where a dribble has run down from that side of the unit.

So in summary; ive no seals but no where to fit something like a copper washer either, hence why i was thinking the thread was the place to seal...

Cheers again for your help, thread lock/seal seems best bet at mo.
Jon.

Pavlo

JIC fittings generally seal with an oring under the hex flange.

You might want to try some Loctite hydraulic sealant or similar, tends to fill gaps and seal better than normal threadlock. But really, tapered threads are required for PTFE tape and thread sealant.

Paul