ATR Stainless Steel Downpipes

with external wastegate, ATR stock replacement, and stock

DOWNPIPES	WASTEGATE
Features of Note: The stock downpipe (left) has a swedge down where the flange mates to the elbow The ATR stock replacement pipe (center) has constant diameter all the way to the flange (no swedge) The ATR external wastegate pipe has the wastegate attached externally and is 3" in diameter (right) The smaller tube takes the output from the wastegate and routes it back into the exhaust	Features of Note: This is a close up of the ATR style wastegate It is very similar in design to the Rajay/Bell Engineering Racegate Notice the "hat" contains the diagphragm and spring mecahnism that lifts a poppet style valve in the lower cast iron section off a seat on the flange of the downpipe
Features of Note: Left to right Stock downpipe ATR stock replacement downpipe ATR external wastegate downpipe Terry Houston downpipe Notice the "swedge" on the stock downpipe that restricts it up by the seal Notice the ATR stock replacement downpipe does NOT have the swedge The ATR external wastegate downpipe is a "first generation" version. Some slight changes have been made to accomodate other styles of headers The Terry Houstong pipe has slightly different bends to accomodate other header styles The cover shown is modified to clear the the 3" downpipes	Features of Note: Another view of the downpipes in the same order as the picture to the left You can clearly see the clearance "notch" cut for the 3" downpipe radius bends The "Y" shaped piece is a testpipe with a cutout made out of T304 stainless steel

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