I cannot find one of the nuts that holds the thermostat housing to the head. I have the bottom one on, (there are only two) and it is a 12mm nut with unknown threading. The problem is i cant find the upper one, and all the nuts ive tried on it dont fit....even the lower thermostat housing nut doesnt fit on it. Can someone check somehow?
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Urgent: Thermostat housing nuts, size/threading
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If the lower nut doesnt fit on there then you have something else going on. Both nuts and washers from the housing plus all 12 of them on the intake manifold should all be the same.
It's an M8 with standard metric thread, 1.5 pitch I think, which is of course different from standard american thread.Adam Fogg- '88 M3
Common sense- It's the new 'gifted'
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