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Originally Posted by wolf22m
Mike,
I am interested in what you mean about the OBX having a mismatch between the primary and secondary pipes. I cannot see a difference in the matching of the cylinders. Do you mean a difference in pipe size?? Just curious Also what is your experience with Hotshot headers cracking? Are they prone to do this, or just after extended use and if so how long? Thanks in advance.
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On the sample I had the holes in the secondary were smaller than the piping and the holes in the secondary so their was about a 1/8" step in the tube. Stuff like this usualy costs a bunch of power.
I have never seen a later than gen 4 HS header crack athough I suspect there was a bad batch of them made because a bunch of people I know in the NE have had them crack. Either that or its the difference in climate in the NE vs California. But none of the race cars we run has had a header carck and road racing is pretty hard on headers due to the extended high temps and vibrations.
Mike
