Oil Leaking Past Exhaust Studs?

[sleepydsm]

Does anyone know if the exhaust manifold stud holes in the 1G 6bolt turbo cylinder heads are blind or do they go all the way through into the head? I will investigate myself with a thin poker in a day or so. I only ask because it seems as if oil is leaking past my exhaust manifold studs. This has actually happened on a previous car of mine, and the only solution was *gasp* high temp RTV on the threads... which is kinda stupid considering hydraulic locking or whatever it's called. Any one have any similar issues?

[turbotalon1g]

i remember someone telling me/or reading somewhere that a few of the studs go into oiling passages in the head.

[Super Bleeder!!]

The lower middle stud passes right through an oil return galley. That is why you need to RTV the end of the stud before you install it.

[Pushit2.0]

The bottom middle stud needs some RTV on the threads, or it will leak, as you have found out.

~John

[sleepydsm]

That is the first I have ever heard of this. Thanks for the info!