nad1
15+ Year Contributor
- 81
- 0
- Sep 5, 2006
-
Festus,
Missouri
Okay, I'm going to write a short book here about my current issue, and my past success with the HX-35 setup. I posted this on 'Talk yesterday, and haven't had any response, so I figured I'd see if anyone here had any insight on the topic.
To start, I had an HX-35 that did not have the provision for an internal wastegate, and had no issues with compressor surge at all. However, I did blow the turbo up due to a oil drain issue. This was using the BEP .55 A/R exhaust housing.
So now I have an HX-35 that came WITH an internal wastegate, but I removed it and set it up for an external gate just like the previous HX-35. This was also using the same BEP .55 A/R exhaust housing.
Since I've had this turbo on, I've been having compressor surge issues, DURING boost, and after letting out. If I hold it at about half throttle, and push about 10-15 PSI for more than a couple seconds, I start getting surge, and it doesn't stop unless I let off, then I hear BOV flutter, which could be surge, or just my crappy GReddy Type S.
I've heard that installing cams would fix this issue, so I've installed 546/547 WebCams, and that did not solve the problem. I've checked for boost leaks numerous times, with no leaks. I do know I have a couple exhaust leaks, but they're very minor, not sure if that could cause it.
So basically, I've had 2 HX-35s, one had no issues, and this one has constant surge issues. NOTHING else had changed between the two, I literally swapped the turbo and changed nothing else.
So is there a difference in the internal gated HX-35 that would cause me to have surge?
And as far as ways to fix this problem, would I be better off just selecting another turbo? Or is there something else I can do to remedy this? If a turbo change is necessary, what Mitsu turbo would be recommended?
Sorry for the longwinded post, but I'm tired of trying to figure this out on my own, and just need some input from some of you guys. Thanks for the help.
To start, I had an HX-35 that did not have the provision for an internal wastegate, and had no issues with compressor surge at all. However, I did blow the turbo up due to a oil drain issue. This was using the BEP .55 A/R exhaust housing.
So now I have an HX-35 that came WITH an internal wastegate, but I removed it and set it up for an external gate just like the previous HX-35. This was also using the same BEP .55 A/R exhaust housing.
Since I've had this turbo on, I've been having compressor surge issues, DURING boost, and after letting out. If I hold it at about half throttle, and push about 10-15 PSI for more than a couple seconds, I start getting surge, and it doesn't stop unless I let off, then I hear BOV flutter, which could be surge, or just my crappy GReddy Type S.
I've heard that installing cams would fix this issue, so I've installed 546/547 WebCams, and that did not solve the problem. I've checked for boost leaks numerous times, with no leaks. I do know I have a couple exhaust leaks, but they're very minor, not sure if that could cause it.
So basically, I've had 2 HX-35s, one had no issues, and this one has constant surge issues. NOTHING else had changed between the two, I literally swapped the turbo and changed nothing else.
So is there a difference in the internal gated HX-35 that would cause me to have surge?
And as far as ways to fix this problem, would I be better off just selecting another turbo? Or is there something else I can do to remedy this? If a turbo change is necessary, what Mitsu turbo would be recommended?
Sorry for the longwinded post, but I'm tired of trying to figure this out on my own, and just need some input from some of you guys. Thanks for the help.
