 Subaru exhaust with the Coldwater (Ian) engine mount, What works? |
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| blitZ |
 Nov 18 2014, 09:57 AM
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#1
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Beer please...  Group: Members Posts: 2,223 Joined: 31-August 05 From: Lawrenceville, GA Member No.: 4,719 Region Association: South East States  |
I picked up an OBX header to use on a Subaru 2.5 and Ian's engine mount. It's not going to fit and would hang to low if it did. What is everyone using as an exhaust solution?
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| mgp4591 |
Nov 21 2014, 02:26 PM
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#2
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914 Guru Group: Members Posts: 5,908 Joined: 1-August 12 From: Salt Lake City Ut Member No.: 14,748 Region Association: Intermountain Region 
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The thing with headers is they flow better than a mass produced cast iron manifold and weigh less. A manifold however will retain heat better so if your pipe length is shorter your flow rate may be higher due to the exhaust gases not coolin down, slowing before they hit the turbo. You want high exhaust gas speed to spin your turbine for less lag, better response. If your piping is short enough just port your manifolds and save your money.
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| matthepcat |
Nov 21 2014, 03:13 PM
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Meat Popsicle Group: Members Posts: 1,462 Joined: 13-December 09 From: Saratoga CA Member No.: 11,125 Region Association: Northern California |
QUOTE(mgp4591 @ Nov 21 2014, 12:26 PM)  The thing with headers is they flow better than a mass produced cast iron manifold and weigh less. A manifold however will retain heat better so if your pipe length is shorter your flow rate may be higher due to the exhaust gases not coolin down, slowing before they hit the turbo. You want high exhaust gas speed to spin your turbine for less lag, better response. If your piping is short enough just port your manifolds and save your money. ^^ Agree ^^ No need for headers at all. Grimspeed used to provide porting and coating services for stock manifolds, plus a high flow crossover pipe. http://www.rallysportdirect.com/GrimmSpeed...X-2004-2011-STI I am sure there are other vendors doing this now. |
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Posts in this topic
blitZ Subaru exhaust with the Coldwater (Ian) engine mount Nov 18 2014, 09:57 AM
76-914
I picked up an OBX header to use on a Subaru 2.5 ... Nov 18 2014, 04:11 PM
mgp4591
I picked up an OBX header to use on a Subaru 2.5... Nov 18 2014, 06:14 PM blitZ Cool, thanks.
These from OutFront looks like they... Nov 19 2014, 08:49 AM Chris H. I have the 3.3 version of those and they did not w... Nov 19 2014, 09:02 AM scotty b anyone looked into these guys ? :confused:
http... Nov 19 2014, 09:28 AM mgp4591
anyone looked into these guys ? :confused:
htt... Nov 19 2014, 09:38 AM matthepcat In the turbo subaru community, in general headers ... Nov 19 2014, 07:08 PM r_towle What does Ian say fits? Nov 19 2014, 09:02 PM effutuo101 I am using Ian's cradle. I have an early versi... Nov 20 2014, 11:37 AM gryphon68 For those looking to build their own headers, one ... Nov 21 2014, 09:45 AM matthepcat Does the stock exhaust manifold not work? Nov 21 2014, 11:25 AM |
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