Okay guys,
Here is what happened to me, I blew an oil seal out of my TE-44 about three weeks ago, it was oil coming out if the space between the exhaust turbine and the DP running down to my wastegate flapper and dripping on the lower radiator hose. In other words, it was oil every freaking where. A buddy of mine said that he has never seen a turbo oil seal blow out that bad. I got the turbo rebuilt and reinstalled it with out any problems.
I also dyno the car just because I felt like it and doing it again today since its cool out unlike the 90* ambient and 80% or so humidity of my last session.
Okay here are my questions:
1) Do I need to replace my mufflers? Every time my exhaust gets hot the car smokes at stop lights like if I was doing a burn out. Yes, I removed the DP to check if the turbo was leaking oil again and nothing, she is perfect. I open the dump and no crazy smoke, just the normal stuff. Once I cap the dump, smokes flows out if the tail pipes. I think my nice SS ATR mufflers may be full of oil…this sucks!
2) When on the dyno, HOW DO I lock the converter so I can get correct readings? I was thinking about shifting it manually from 1st to 3rd, then flooring the gas at 3,000 rpms or so.
3) On my last dyno I noticed that my A/F were below the 10.0 mark. Heck, my A/F is fat even though my Scanmaster read in the 789 to 777 range. I think my car likes to be lean. I pulled a little bit of fuel on the TT chip and the car picked up about 12rwhp and 30rwtq. A/F was still in the 11.0 to 10.6 range. For you guys who have done some dyno tuning, what A/F does your GN typically likes? I have about an hour and a half of dyno time this afternoon with my car; I am shooting for A/F in the 11.8 to 12.0 range thus putting me about 12.3 on the road. Screw the O2 reading on the scanmaster, as long as I am NOT knocking, and the car is continuing to make power, I am leaning her out….well, not too lean, I’m not crazy.
Thanks for your inputs:smile:
Here is what happened to me, I blew an oil seal out of my TE-44 about three weeks ago, it was oil coming out if the space between the exhaust turbine and the DP running down to my wastegate flapper and dripping on the lower radiator hose. In other words, it was oil every freaking where. A buddy of mine said that he has never seen a turbo oil seal blow out that bad. I got the turbo rebuilt and reinstalled it with out any problems.
I also dyno the car just because I felt like it and doing it again today since its cool out unlike the 90* ambient and 80% or so humidity of my last session.
Okay here are my questions:
1) Do I need to replace my mufflers? Every time my exhaust gets hot the car smokes at stop lights like if I was doing a burn out. Yes, I removed the DP to check if the turbo was leaking oil again and nothing, she is perfect. I open the dump and no crazy smoke, just the normal stuff. Once I cap the dump, smokes flows out if the tail pipes. I think my nice SS ATR mufflers may be full of oil…this sucks!
2) When on the dyno, HOW DO I lock the converter so I can get correct readings? I was thinking about shifting it manually from 1st to 3rd, then flooring the gas at 3,000 rpms or so.
3) On my last dyno I noticed that my A/F were below the 10.0 mark. Heck, my A/F is fat even though my Scanmaster read in the 789 to 777 range. I think my car likes to be lean. I pulled a little bit of fuel on the TT chip and the car picked up about 12rwhp and 30rwtq. A/F was still in the 11.0 to 10.6 range. For you guys who have done some dyno tuning, what A/F does your GN typically likes? I have about an hour and a half of dyno time this afternoon with my car; I am shooting for A/F in the 11.8 to 12.0 range thus putting me about 12.3 on the road. Screw the O2 reading on the scanmaster, as long as I am NOT knocking, and the car is continuing to make power, I am leaning her out….well, not too lean, I’m not crazy.
Thanks for your inputs:smile: