Quote:
Originally Posted by jeff68
A little late, but the exhaust manifold heat riser should be installed so that the weight is on the outboard side.
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Are you sure Jeff? I asked Mike and Andrew to install it just like JohnZ said and to make it look like his Z/28 engine pictured below. They did exactly what I asked.
JohnZ wrote: “The “extension” was used on all cars at the RH exhaust pipe-to-manifold attachment, in addition to the heat riser valve; it supports the inside diameter of the packing, keeping it from disintegrating (it was also used on the other side). The illustration in the A.I.M. is incorrect – it should show the heat riser valve too. If you look in the “non-illustrated parts” sheet at the beginning of the L34/L35/L78 sections, under UPC 6, where it has the line item for “intake & exhaust manifolds & heat control”, it shows the “assembles same as production” symbol (the “heat control” is the heat riser valve). ”