November 22, 20196 yr does anyone know which intake bolt goes into the coolant passage on an EA82? I know one of them is leaking coolant into the intake. gonna try and throw some RTV on the bolt and see if that stops the leak. Only thing is.....which one?
November 22, 20196 yr They are not supposed to be into the coolant. Even if one [of the 2 near the coolant port] was drilled too deep, it would intersect a head bolt. The outermost one - on each end, those might eventually hit a coolant passage if you were to drill deep enough, but they do not connect in a stock head. The head bolts are not really sealed off from the crank case, but the head bolt and washer make it not really open either. In a stock head, if there is coolant in the space around an intake bolt, it is coming from a failing intake gasket, or crack or warp in the manifold.
November 22, 20196 yr Author 24 minutes ago, DaveT said: They are not supposed to be into the coolant. Even if one [of the 2 near the coolant port] was drilled too deep, it would intersect a head bolt. The outermost one - on each end, those might eventually hit a coolant passage if you were to drill deep enough, but they do not connect in a stock head. The head bolts are not really sealed off from the crank case, but the head bolt and washer make it not really open either. In a stock head, if there is coolant in the space around an intake bolt, it is coming from a failing intake gasket, or crack or warp in the manifold. ah thanks dave. I've struggled with keeping intake gaskets from leaking on this engine. I've gone through 3 sets in the last year alone. They fail in the same place every time, drivers side intake bolt closest to the front of the engine. Totally possible the intake is warped.
November 23, 20196 yr Buying your gaskets directly from Subaru? I have heard of problems with aftermarket intake gaskets.
November 23, 20196 yr Author 2 hours ago, 88SubGL said: Buying your gaskets directly from Subaru? I have heard of problems with aftermarket intake gaskets. yes they are subaru gaskets. that's the only way to go. I'm pretty sure my intake needs machining.
November 23, 20196 yr Take off the manifold. Clean the faces. Set it in place, try a feeler gauge to see if you can pick up on how flat the faces are lining up to each other. You might need to use a set of gaskets while doing this, depending on clearances, etc. Maybe lightly installing a couple of the bolts
November 23, 20196 yr Author 9 hours ago, DaveT said: Take off the manifold. Clean the faces. Set it in place, try a feeler gauge to see if you can pick up on how flat the faces are lining up to each other. You might need to use a set of gaskets while doing this, depending on clearances, etc. Maybe lightly installing a couple of the bolts ah! of course. thanks dave!
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