AgntorangeDSM
15+ Year Contributor
- 288
- 18
- Oct 31, 2005
-
Sioux Falls,
South_Dakota
ISSUE:
I recently installed a USED 38mm MVS with a new bull fab open dump O2 housing and "new/rebuilt" 20g turbo setup (turbo came from Jeremiah Morrow.)
-Currently I am not able to reach more than 1 PSI of boost pressure at any point in the RPM band. it runs smooth and strong like an NA 4G63T just missing a turbo. No chugging, or loss of power through the RPM band. I'm lost on other issues and looking for other opinions.
Installed parts during this process:
-new VRFS Front mount
-1g Dodge Mod BOV
-freshly tested 560 evo injectors
-Evo 8 fuel pump (I did the rewire as well prior)
-20g MHI turbo
-Alan Bull Fab 02 housing with open dump
-Used Tial 38 MVS
-ARP manifold studs
-gasket on head-manifold
-gasket from manifold to turbo
-O2 manifold gasket
What I have tried or tested with no results:
-I have done 13+ boost leak tests and I can't find a single leak any more at this point.
-I bench tested the EWG and it seems in my eyes to be fine. no physical damage on the diaphragm, 13 PSI spring, top ports are open
-verified the 1g BOV to be working properly
-verified the turbo is spinning freely
-verified no exhaust leaks that i can see or hear
-verified the Tial fire ring is present
-I have found the fire ring doesn't seat tight meaning it will move in and out with bench tested pressure and me pushing on it.
-after a 30 min drive home, no exhaust traces around the turbo system, manifold, head, or O2 housing, not even in the open dump (thinking if it were stuck open, it would have exhaust traces in there.
-re-installed the 450 stock injectors
-smoke tested the exhaust system to test for leaks
Anyone have some other thoughts on this? its a new one for me in the DSM world so its been racking my brain for the last 4 days.
I recently installed a USED 38mm MVS with a new bull fab open dump O2 housing and "new/rebuilt" 20g turbo setup (turbo came from Jeremiah Morrow.)
-Currently I am not able to reach more than 1 PSI of boost pressure at any point in the RPM band. it runs smooth and strong like an NA 4G63T just missing a turbo. No chugging, or loss of power through the RPM band. I'm lost on other issues and looking for other opinions.
Installed parts during this process:
-new VRFS Front mount
-1g Dodge Mod BOV
-freshly tested 560 evo injectors
-Evo 8 fuel pump (I did the rewire as well prior)
-20g MHI turbo
-Alan Bull Fab 02 housing with open dump
-Used Tial 38 MVS
-ARP manifold studs
-gasket on head-manifold
-gasket from manifold to turbo
-O2 manifold gasket
What I have tried or tested with no results:
-I have done 13+ boost leak tests and I can't find a single leak any more at this point.
-I bench tested the EWG and it seems in my eyes to be fine. no physical damage on the diaphragm, 13 PSI spring, top ports are open
-verified the 1g BOV to be working properly
-verified the turbo is spinning freely
-verified no exhaust leaks that i can see or hear
-verified the Tial fire ring is present
-I have found the fire ring doesn't seat tight meaning it will move in and out with bench tested pressure and me pushing on it.
-after a 30 min drive home, no exhaust traces around the turbo system, manifold, head, or O2 housing, not even in the open dump (thinking if it were stuck open, it would have exhaust traces in there.
-re-installed the 450 stock injectors
-smoke tested the exhaust system to test for leaks
Anyone have some other thoughts on this? its a new one for me in the DSM world so its been racking my brain for the last 4 days.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.
You must be logged in to view this image or video.