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Originally Posted by dirty hands
another possibility is the two exhaust manifolds have different openings at the ports
quote im running the ford exhaust manifold, the mazda one is longer.
did this glow start with the manifold swap ???
if your not using ford to ford or mazda to mazda exhaust manifolds check if there is a difference even slight might restrict the hot gasses flow away from the engine
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the manifolds appear to have the same sized ports and they bolt up very easily
the mazda one was 1 cm longer before the flange, it fits but when u start it the exhaust hits the crossmember badly
its done the glowing trick since the engine swap.... the only reason why the motor was swapped cos it dropped a valve and put it straight thru the piston destroying the head and piston
im now sure its a motor related issue cos it hadnt done it prior to when the motors where swapped
what are the valve clearances meant to be on the inlet\exhaust????
i loosened them up a little (cyl4 exhaust was riding like crazy)
cos i would rather a little tappet noise but(so i know ther blood y working when they should be) i still cant hear them even when set looser than they should be