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Home/ Registry/ Lincoln/ Town Car/ 1990–1997/ “Mileage Master”/ Y-pipe install day supermotors.net/registry/9371/28549

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Y-pipe install day

From 1990 Lincoln Town Car “Mileage Master” — documented by Sixlitre.

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1990 Lincoln Town Car - Why not stick with dual 1 7/8" pipes ? 1.) too small 2.) no crossover pipe 3.)duals promote horsepower, not torque 4.) better mileage with… 1990 Lincoln Town Car - We loosened off the headpipes with heat, impact chisel, penetrating fluid and the ratchet. 1990 Lincoln Town Car - Knowing we're only going to use one of the air pump pipes, we cut one and loosened off the other one (we'll cap it later). 1990 Lincoln Town Car - We saved the two headpipes, with pre-cats and cats, intact. Didn't even break the air pipe nipples. These headpipes are seriously expensive… 1990 Lincoln Town Car - Although we saved the driver's side air pipe, intact, the Y-pipe (after the stock cats it "Y"s back into a single) was pretty rotten and ha… 1990 Lincoln Town Car - Got bent over the stealership counter for these manifold studs, but believe me it's best to put new ones in now. Their holes are not really… 1990 Lincoln Town Car - New studs back into the manifolds. The calipers told us that the passenger manifold side stud centers are considerably wider than the drive… 1990 Lincoln Town Car - A little work with the hacksaw and we're back in business, on the passenger's side. 1990 Lincoln Town Car - This was my idea to get us from the 2" headpipe flares back out to 2 1/4" pipe to head for the Flowmaster Y collector with. My pipe bending… 1990 Lincoln Town Car - First he cut off the last 4" of the flared pipe, the part which is expanded to accept a 2" pipe. His reasoning was we could slip the 2 1/4"… 1990 Lincoln Town Car - Jumping ahead a few steps, looks like he was pretty smart to do so. In the top right you can see this allowed more room to make the 105 deg… 1990 Lincoln Town Car - Trial bent 105 degree pipe slips over the flared pipe stub and clears the TV cable with plenty to spare. 1990 Lincoln Town Car - Nice direct bend in 2 1/4" pipe, in spite of the 105 degree turn leaving us little room to make the corner. 1990 Lincoln Town Car - The driver's side headpipe makes another 90 degree towards the rear, completely clearing the transmission pan. The passenger's headpipe run… 1990 Lincoln Town Car - We got the Y collector perfectly centered under the crossmember and as close to it as we could get it for ground clearance. 1990 Lincoln Town Car - Look down that collector and see why they reckon this Y collector to be worth 25-40 ft/lbs of torque. 1990 Lincoln Town Car - Now that we've clocked the header flange on the Y collector to the best setting for the Lincoln's chasis, my pipe bending buddy welds the h… 1990 Lincoln Town Car - The heatshield will go towards the trans crossmember and floor. 1990 Lincoln Town Car - When the welds cooled down enough I cleaned them up with a wire brush. Then I nailed them with Plasticote's 1500 degree exhaust paint to po… 1990 Lincoln Town Car - Couldn't resist cleaning the grease off the pipes and spraying them as well. Note the ample clearance around the TV cable. 1990 Lincoln Town Car - Even happier with the clearance around the tranny lines. Everything is tucked up as close to the floor as the stock dual pre-catted headpip… 1990 Lincoln Town Car - How's that for nice direct runs off the manifolds into the Flowmaster Y collector ! The lowest point is still tucked higher than the front… 1990 Lincoln Town Car - As you can see there is an offset to match up with the stock muffler. I ran 2 1/4" all the way into a muffler with a 2 1/4" inlet and a 2"… 1990 Lincoln Town Car - There's plenty of room for the driveshaft to clear the muffler and connecting pipe. 1990 Lincoln Town Car - Ground clearance is good and everything is actually higher than the engine crossmember. 1990 Lincoln Town Car - Another shot denoting the good ground clearance and the typical nightmare of a tailpipe, that TCs have.