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Originally Posted by hc_416 I fixed it!!! The part i didn't get was the control unit and the waste gates are seperate systems. I had to tap the fuel pressure
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#1 (permalink) | |
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Sorry for ******* up your install, here's a $2k manifold! |
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#2 (permalink) |
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Glad you got fixed before your car pooped. That would be no good. A new manifold is a decent compensation I guess. It's not like you didn't pay them big $$ then they took it then messed up doing an install of what they specialize in. But like I said, a decent compensation due to the fact that your car didn't boom (could easily have with overboosting).
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Glad to see AAM with an effort to make it right. Hopefully no permanent damage done during the overboosting and a $2k manifold is a pretty sweet freebie for your trouble. MAKE SURE THE MANIFOLD CASTING IS CLEAR AND CLEAN!!!!
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I think it is fair, I never wanted to overboost but it looks like the tech hooked it up for a twin instead of a single. Then since i have never hooked up a bov or waste gates i had to learn; which was about 8 hours and a few drinks in lol. I still have to check the vaccum at idle and set the spring. Does anyone have a idea about waste gate springs? I have the seven pound and using the pressure for the BC, should I keep it this way or go to a heavier spring? Still learning....
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Are you using a boost controller? Then here's what you need to know in selecting a spring: In the general case, you want to select the lightest spring that still allows your boost controller to hold the target boost all the way to redline. If you have too light of a spring, the exhaust pressure at high rev/load will be able to push the wastegate flapper open on its own. Too heavy of a spring, and you won't be able to dial the boost down if you need. Now, you may want to go a little heavier that "the lightest you can" so that you have room to raise the boost later down the road... There is probably a range of springs that will work now and in the future.. And don't forget, you can always tension the spring down for adjustment.
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Couple things. Make sure you have your vacuum lines clear of the manifold and securely so. Second after much suspicion I found that the springs in the Tial wastegates read a bit off consistently. At first I thought it was my boost controller buat after checking around I talked with a major shop in the area and found that they would pressure test the springs before install and the same inconsistent readings were found with the springs. I finally went with the the next step lower than recommended. The boost controller can only regulate boost from that point up and no lower. But above all else make sure the vacuum lines stay clear of anything that might burn a hole in them. I got owned by a 1/4 inch hole in a vacuum line to the passenger wastegate. |
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You guys are confusing BOV springs and wastegate springs. Glad you got it all figured out. Let me know what your vacuum is at idle and I'll get you the correct BOV sent.
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Ok will do sasa it wont be worked on till Friday so anout a week. Were is the best place to get the vaccum measurements from? I was going to buy one of tbose five dollar ones from ebay. Or would it be better from autozone?
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Anywhere on the intake manifold. A cheap gauge will do just fine.
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2 updates. First the vacuum gauge didn't come today, so I will have to wait till next week to get the reading. Second is i'm hearing the waste gates open but they sound like they are fluttering and not releasing pressure when they should. the boost just keeps going up.... any idea what it its?
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Hey guys got the vacuum measurement, it came in at 19.5 Hg, What are guys thought's? I also turned off the BC and found that i'm not even getting the waste gates to do jack. The boost just goes up till i hit redline and shift, maybe they are stuck? Well this weekend I will take them apart and take a look at and see what springs they put in, maybe they went way to strong.
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Also, when you tuned the BC off, did you leave the solinoid plumbed in the wastegate lines? Try completely removing the BC from the loop so you can be certain your wastegates are as isolated as they can be.
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Be very careful if you spike you're looking at a new motor. Maybe pull the wastegates to make sure your diaphragms are not pinched. And it may seem like alot of work but having been through what I've been through I'd pull all the vacuum lines and reinstall them.
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