Syndicate13
20+ Year Contributor
- 1,511
- 30
- Jan 5, 2003
-
Ft. Myers,
Florida
I said I was going to do this because when I was asking questions I could not find the answer I was looking for. Everyone knows (or should) that an external wastegate is a lot more effective at controlling boost than an internal. Most people are cheap and unless going full garrett there was no cheap or easy way to go external with a Mitsu style turbo. SBR recently released another iteration of their cast manifold with a built in 38mm wastegate flange. I have yet to find someone else running one with an external gate so I'm posting this here for anyone else who was looking for the same answers I was.
First the manifold. It came packaged nicely and looked great. I ordered it ported of course, no use buying new parts and not getting the best right? Port job was smooth and complete, I had heard some rumors that SBR was not going into the runners, merely porting the entrance and the collector area. This was not the case with mine and I believe not with anyones. Here is a pic next to my mildly ported 2G manifold, don't mind that crack.
The sole reason I decided to go with this manifold was the ease of mounting an external gate. No messy welding to have crack on me, no wrestling with some custom O2 mount setup that is subject to the same creep problems from improper porting of the turbine housing, just simple effective, solid boost control. I will tell you now that on my 2G I had to relocate my dipstick tube slightly but the Tial 38mm clears the PS pump without a problem. My stock AC fan was melted from an exhaust leak so I removed it and it will be replaced with a slim style fan anyway. The stock AC fan will not fit with the wastegate mounted so take that into consideration if you wanna go this route. One thing I noticed about my manifold was that the bolt holes on the manifold were slightly wider than the holes on my wastegate, requiring me to make the holes on the wastegate slightly larger to make some room. I don't know what Tial wastegates are made of but it's some tough damn stuff!! After this little modification it went on fine. SBR makes the flange at the head thicker to provide additional clearance from the waterpipe for turbos with large compressor covers. I am running a Green and the waterpipe required some "convincing" to let my Green occupy it's space. The rest of the install went smoothly and I have no real complaints, other that SBR forgot to include my 7cm gasket and even after calling I still have not received one. Lucky that I have the DSM Professor as a close neighbor and he had one laying around. Here are a few more pics showing the whole thing mocked up on the bench and finally all together in the car, as well as a comparison of the small 16g and Green.
First the manifold. It came packaged nicely and looked great. I ordered it ported of course, no use buying new parts and not getting the best right? Port job was smooth and complete, I had heard some rumors that SBR was not going into the runners, merely porting the entrance and the collector area. This was not the case with mine and I believe not with anyones. Here is a pic next to my mildly ported 2G manifold, don't mind that crack.
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The sole reason I decided to go with this manifold was the ease of mounting an external gate. No messy welding to have crack on me, no wrestling with some custom O2 mount setup that is subject to the same creep problems from improper porting of the turbine housing, just simple effective, solid boost control. I will tell you now that on my 2G I had to relocate my dipstick tube slightly but the Tial 38mm clears the PS pump without a problem. My stock AC fan was melted from an exhaust leak so I removed it and it will be replaced with a slim style fan anyway. The stock AC fan will not fit with the wastegate mounted so take that into consideration if you wanna go this route. One thing I noticed about my manifold was that the bolt holes on the manifold were slightly wider than the holes on my wastegate, requiring me to make the holes on the wastegate slightly larger to make some room. I don't know what Tial wastegates are made of but it's some tough damn stuff!! After this little modification it went on fine. SBR makes the flange at the head thicker to provide additional clearance from the waterpipe for turbos with large compressor covers. I am running a Green and the waterpipe required some "convincing" to let my Green occupy it's space. The rest of the install went smoothly and I have no real complaints, other that SBR forgot to include my 7cm gasket and even after calling I still have not received one. Lucky that I have the DSM Professor as a close neighbor and he had one laying around. Here are a few more pics showing the whole thing mocked up on the bench and finally all together in the car, as well as a comparison of the small 16g and Green.
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