HTT Manifolds VS ATS Manifolds
09-22-2005, 09:02 AM
#16
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09-22-2005, 09:10 AM
#17
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Originally Posted by duke1n
My HTT came assembled and with pyro ports. I don't get the whole porting deal. The HTT matched exactly. Even the gaskets were an exact fit. I don't think it did jack for spool up EGTs but it looks pretty and won't crack. I did have to re-route the heater core hose as the stock metal tubing would not work with the HTT manifold.
ATS replaced the manifold.
09-22-2005, 09:34 AM
#18
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Originally Posted by duke1n
My HTT came assembled and with pyro ports. I don't get the whole porting deal. The HTT matched exactly. Even the gaskets were an exact fit. I don't think it did jack for spool up EGTs but it looks pretty and won't crack. I did have to re-route the heater core hose as the stock metal tubing would not work with the HTT manifold.
Good job!
09-22-2005, 09:53 AM
#20
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Originally Posted by 13FOX
Cummins also makes a two piece for the B series.
09-22-2005, 10:51 AM
#22
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Originally Posted by duke1n
My HTT came assembled and with pyro ports. I don't get the whole porting deal. The HTT matched exactly. Even the gaskets were an exact fit. I don't think it did jack for spool up EGTs but it looks pretty and won't crack. I did have to re-route the heater core hose as the stock metal tubing would not work with the HTT manifold.
I fabricated an extension for the heater hose bracket when my HTT was installed.
09-22-2005, 11:19 AM
#24
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I really like how the HTT manifold is tapped and ported for both the front and rear three exhaust ports. However, I do not wish to re-route the heater lines from the stock location.
duke1n - Was it an abslolute necessity to re-route the lines, or do you think you could have gotten by without doing it?
I've heard the stock manifold can also damage the head itself. If you look down the front manifold bolt, you'll notice the stock manifold is closer on one side of the bolt than the other. Eventually, the stock manifold will be touching the bolt and will put pressure against it. This pressure will eventually crack the area of the head that the bolt threads into.
duke1n - Was it an abslolute necessity to re-route the lines, or do you think you could have gotten by without doing it?
I've heard the stock manifold can also damage the head itself. If you look down the front manifold bolt, you'll notice the stock manifold is closer on one side of the bolt than the other. Eventually, the stock manifold will be touching the bolt and will put pressure against it. This pressure will eventually crack the area of the head that the bolt threads into.
09-22-2005, 11:26 AM
#25
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In my opinion yes. It's hard to explain but the extra girth of the HTT causes the metal tubing to not be able to be mounted in the stock position. One could probably fab up a bracket that would allow the tube to be moved out further from underneath the manifold but I felt like re-routing was a cleaner solution. It also allows easier access to the lower manifold bolts for re-torquing. It's pretty easy and costs next to nothing to do it. I can show you pics how I did it if you want.
09-22-2005, 11:37 AM
#26
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Originally Posted by royta
I really like how the HTT manifold is tapped and ported for both the front and rear three exhaust ports. However, I do not wish to re-route the heater lines from the stock location.
duke1n - Was it an abslolute necessity to re-route the lines, or do you think you could have gotten by without doing it?
I've heard the stock manifold can also damage the head itself. If you look down the front manifold bolt, you'll notice the stock manifold is closer on one side of the bolt than the other. Eventually, the stock manifold will be touching the bolt and will put pressure against it. This pressure will eventually crack the area of the head that the bolt threads into.
duke1n - Was it an abslolute necessity to re-route the lines, or do you think you could have gotten by without doing it?
I've heard the stock manifold can also damage the head itself. If you look down the front manifold bolt, you'll notice the stock manifold is closer on one side of the bolt than the other. Eventually, the stock manifold will be touching the bolt and will put pressure against it. This pressure will eventually crack the area of the head that the bolt threads into.
09-22-2005, 12:57 PM
#27
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That what's some refer to as a hack job lol. Trust me it's not going to be a clean setup if you do that. It's mounted on both the back and front of the manifold. The back would require a new bracket be fabbed which would space it away from the manifold. It would then be in there all cockeyed. Leaving it hanging would be cheesy too. Different strokes for different folks I guess. Judging by some of the stuff I've seen this would not surprise me to see it just left hanging lol.
09-24-2005, 01:24 AM
#28
Originally Posted by Bart Timothy
The HTT manifold isn't sent drilled and tapped. At least mine wasn't. HTT claims their manifold flows slightly better than the ATS.
09-24-2005, 12:43 PM
#29
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So far nobody has actually verified the claims of the manufacturer about spoolup or egts. Isn't there anybody out there who has done no other changes and seen a difference in egt's? Has anybody had one ported and seen a difference, either pulled off a three piece and ported it and found a difference or took off the stock manifold and installed a ported/non-ported one and seen a difference? We all know they will replace a cracked stock manifold, c'mon guys, give us something helpful!
09-24-2005, 10:47 PM
#30
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Originally Posted by bigragu
Just finished my install of the HTT last month, yes this came tapped with a choice of 2 locations.(Thanks DieselGuru for the refferal to HTT) Nice set up, very clean and beefier than OEM. For a clean finish, ask for the allen head bolts. Very tough lookin'. Carmyne
Bill, I switched from a B1-2 to the SPS66 at the same time I installed the manifold so I can't give a direct comparison but visually, I don't see how you would gain anything. It wasn't anymore opened up than the stocker. Looks cool and shouldn't crack...