Help. Low numbers, Newb Turbo questions?
11-30-2006, 07:13 PM
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Help. Low numbers, Newb Turbo questions? Ok, I have done some research but did not come up with much...Im a little new this this turbo stuff, I purchased a Car with an STS kit on the the car. I was told it has a T67, but when I was cleaning the car I noticed that the turbo housing said .60mm. Is a T-67 a .60 mm housing with an upgraded impellar? Or do I have a t-60 on the car.
Also, I just got back from the dyno and the power is not there... I purchased this car a few weeks ago and it made 460/480 on 4 lbs of boost with the previous owner... Now it is set to run 7 lbs and it only turned 434/476. When i was on the dyno it only turned 6 lbs for about a second then stayed around 5 lbs for most of the pull. What could be wrong for this amount of power loss? The graph is fairly smooth and the car pulls like it should though it is down about 25rwhp on more psi.....WTF
Thanks for your help
Sorry for the Newb questions...
Also, I just got back from the dyno and the power is not there... I purchased this car a few weeks ago and it made 460/480 on 4 lbs of boost with the previous owner... Now it is set to run 7 lbs and it only turned 434/476. When i was on the dyno it only turned 6 lbs for about a second then stayed around 5 lbs for most of the pull. What could be wrong for this amount of power loss? The graph is fairly smooth and the car pulls like it should though it is down about 25rwhp on more psi.....WTF
Thanks for your help
Sorry for the Newb questions...
11-30-2006, 08:38 PM
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Originally Posted by cablebandit
maybe one dyno loaded the car more than the other...fueling could have changed due to fuel trims changing....all sorts of stuff. Where did you dyno?
11-30-2006, 08:50 PM
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Originally Posted by 99silverWS6
Ok, I have done some research but did not come up with much...Im a little new this this turbo stuff, I purchased a Car with an STS kit on the the car. I was told it has a T67, but when I was cleaning the car I noticed that the turbo housing said .60mm. Is a T-67 a .60 mm housing with an upgraded impellar? Or do I have a t-60 on the car.
Also, I just got back from the dyno and the power is not there... I purchased this car a few weeks ago and it made 460/480 on 4 lbs of boost with the previous owner... Now it is set to run 7 lbs and it only turned 434/476. When i was on the dyno it only turned 6 lbs for about a second then stayed around 5 lbs for most of the pull. What could be wrong for this amount of power loss? The graph is fairly smooth and the car pulls like it should though it is down about 25rwhp on more psi.....WTF
Thanks for your help
Sorry for the Newb questions...
Also, I just got back from the dyno and the power is not there... I purchased this car a few weeks ago and it made 460/480 on 4 lbs of boost with the previous owner... Now it is set to run 7 lbs and it only turned 434/476. When i was on the dyno it only turned 6 lbs for about a second then stayed around 5 lbs for most of the pull. What could be wrong for this amount of power loss? The graph is fairly smooth and the car pulls like it should though it is down about 25rwhp on more psi.....WTF
Thanks for your help
Sorry for the Newb questions...
460 sounds like too much for 4psi unless you have a built motor.
If the boost falls off, it is either a boost leak, or the load changed. Does it hold 7psi on the street? If so, then its how the dyno loads it. If it still peaks and falls, especially in higer gears, then its a leak.
11-30-2006, 09:34 PM
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Originally Posted by trtturbo
The outside of the turbo will look the same if its a 60-1 or 67. Its just the size of the compressor wheel thats different. If you want to go to the trouble, post up a pic.
460 sounds like too much for 4psi unless you have a built motor.
If the boost falls off, it is either a boost leak, or the load changed. Does it hold 7psi on the street? If so, then its how the dyno loads it. If it still peaks and falls, especially in higer gears, then its a leak.
460 sounds like too much for 4psi unless you have a built motor.
If the boost falls off, it is either a boost leak, or the load changed. Does it hold 7psi on the street? If so, then its how the dyno loads it. If it still peaks and falls, especially in higer gears, then its a leak.
here is a dyon graph
