No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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The factory 1200GX exhaust is a cast iron, dual outlet manifold, not an extractor, & it uses three "studs" with nuts, not bolts.
These studs are the same as the ones that are used in the standard exhaust manifold, except there are three of them instead of the two on the standard model. The nuts are the same too. I purchased three new studs & nuts a couple of weeks ago from my Nissan dealer, so they are still available over here. They are by my left elbow as i write. The GX flange gasket is no longer available here as i bought the last 5 of them about 15 years ago, but it may well be an available part in South Africa.
Heres what i suggest. Buy three new studs, nuts, & a new gasket. If your old studs break, then replace them. DO NOT use bolts. By preparing in advance with parts that you might need, you will have a job that can procede even if the worst happens. These parts are cheap, so if you don't use them, so what, just stash them away for later.
If the stud breaks & there is enough of it protruding to get a pair of vyce grips on the remaining bit, you will find that heating the flange to a dull red colour will allow the stud to come out, if it is worked back & foward GENTLY. [humored] Do not use a savage flame on the manifold either, use just as big an oxy flame as is needed to heat it up. Once the stud is out, let the manifold cool down & then run a thread tap through the hole to ensure that the thread is good.
Double nut the new stud & install it with the use of a suitable high temp anti-sieze paste. Do it up tight & remove the nuts. Repeat as necessary for other studs. Use the anti sieze on the nuts & do them up tight too. You should have no further trouble with this part of the car.
If your flywheel is marked, is discoloured with blue or straw coloured patches, or has heat cracks in it, then it will need to be re-machined to remove these imperfections, or replaced with a new or good used one. If you re-install a new clutch on a crook flywheel, you will soon wish that you hadn't.
Posted on: 2004/4/2 15:30
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