3 inch ypipe for macs?
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 356
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From: Texas
Re: 3 inch ypipe for macs? Pro-dyno in Tempe,AZ did mine. Make sure you do the 3" collector mod at the same time. Worthless to build a 3" y-pipe and keep the stock MAC ball flanges.
Todd
Todd
Thread Starter
TECH Apprentice
Joined: Jan 2002
Posts: 356
Likes: 0
From: Texas
Re: 3 inch ypipe for macs? The 3" collector mod is fairly simple. Just find a shop that does good work. It is best done with the MACs in the car, so they can match the flanges for the Y-pipe to the flange to be welded to the headers.
Simple cut the ball-flange assembly off the MACs. That leaves you with the 3" portion of the collector. Get 4 3", 3 bolt collector flanges and weld them up. Weld the header flanges first and then match up the Y-pipe flanges.
It requires custom work on the Y-pipe as well, so I had a shop do it that can work with 3" pipe.
Todd
Simple cut the ball-flange assembly off the MACs. That leaves you with the 3" portion of the collector. Get 4 3", 3 bolt collector flanges and weld them up. Weld the header flanges first and then match up the Y-pipe flanges.
It requires custom work on the Y-pipe as well, so I had a shop do it that can work with 3" pipe.
Todd
