car is finally finished (lots of pics)
05-08-03, 12:46 PM
#26
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You have yourself a full blown drag car thats ready to put up a few notches on the old bed post!
WHOA!!! Did I just say that out loud?
Anyway looks just right! Ive bin followin your build up on a silent basis, kinda like a stalker, and you have done all the right stuff now go get some time slips.
WHOA!!! Did I just say that out loud?
Anyway looks just right! Ive bin followin your build up on a silent basis, kinda like a stalker, and you have done all the right stuff now go get some time slips.
05-08-03, 05:11 PM
#31
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it will be a couple of months before i hit the track, i need to buy some new slicks, and another set of rims for the drag tyres, another exhaust etc so it will be a while!
Dale
Dale
05-08-03, 07:01 PM
#33
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Umm I believe that a wastegate in on the EXHAUST side of the turbo, It allows excess exhaust gasses to vent into the exhaust system downwind of the turbine when the boost gets too high. The blow-off valve is on the intake side and like was said releases the boost into the air when the throttle closes, to keep the turbo spooling and prevent the boost from crashing into the throttle plate or back into the intake turbine.
But I could be wrong
Pretty car. That motor is fat as hell.
But I could be wrong
Pretty car. That motor is fat as hell.
05-08-03, 07:27 PM
#35
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Originally posted by wes2k3
Umm I believe that a wastegate in on the EXHAUST side of the turbo, It allows excess exhaust gasses to vent into the exhaust system downwind of the turbine when the boost gets too high. The blow-off valve is on the intake side and like was said releases the boost into the air when the throttle closes, to keep the turbo spooling and prevent the boost from crashing into the throttle plate or back into the intake turbine.
But I could be wrong
Pretty car. That motor is fat as hell.
Umm I believe that a wastegate in on the EXHAUST side of the turbo, It allows excess exhaust gasses to vent into the exhaust system downwind of the turbine when the boost gets too high. The blow-off valve is on the intake side and like was said releases the boost into the air when the throttle closes, to keep the turbo spooling and prevent the boost from crashing into the throttle plate or back into the intake turbine.
But I could be wrong
Pretty car. That motor is fat as hell.
and the higher boost and/or bigger turbo the less you need a wastegate
people always think the bigger the turbo and boost the bigger wastegate you need ....wrong
05-09-03, 08:51 AM
#37
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yup and the higher boost and/or bigger turbo the less you need a wastegate people always think the bigger the turbo and boost the bigger wastegate you need ....wrong
BTW thats a badass car
05-09-03, 07:32 PM
#38
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I think what he means is that the larger turbo needs all the exhaust gasses it can get to make more boost. Thusly it does not need as much wastegate. Also the smaller turbo would suffer more damage if the wastegate were not there, where the larger turbo can handle much more exhaust.
05-10-03, 03:53 PM
#40
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Originally posted by wes2k3
I think what he means is that the larger turbo needs all the exhaust gasses it can get to make more boost. Thusly it does not need as much wastegate. Also the smaller turbo would suffer more damage if the wastegate were not there, where the larger turbo can handle much more exhaust.
I think what he means is that the larger turbo needs all the exhaust gasses it can get to make more boost. Thusly it does not need as much wastegate. Also the smaller turbo would suffer more damage if the wastegate were not there, where the larger turbo can handle much more exhaust.
if you take the same motor with a big turbo on it and put a smaller turbo on it then it would require alot less exaust to spin the smaller one so more would have to routed around the turbo (wastegate)
as far as spring presure to control high boost that just a matter of changing springs in the wastegate...my deltagate wastegate would only allow me up to 23# with stock spring in it so I popped the cover off and added a second spring in it now I can make the boost gauge spin if I want
a wastegate is used to turn boost down so in all acuallity the lower boost you run the bigger wastegate you need
05-10-03, 06:22 PM
#41
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I think you're a bit confused on the issue of wastegates. If what you're saying was true why would almost all factory turbochargers have small internal wastegates (aside from cost) while aftermarket turbo's use big external gates?
The reality is, big turbo/high boost applications need a bigger gate to control boost because the engine's producing a lot more exhaust flow. Winding up the boost on a turbo with an internal wastegate can cause all sorts of problems with boost fluctuation. In some cases it can even cause boost to drop off at high rpm. This is because the wastegate can't flow all the exhaust gas the engine is making which causes a buildup of backpressure in the exhaust manifold and a loss of efficiency.
In short, the higher your performance the bigger wastegate you need.
The reality is, big turbo/high boost applications need a bigger gate to control boost because the engine's producing a lot more exhaust flow. Winding up the boost on a turbo with an internal wastegate can cause all sorts of problems with boost fluctuation. In some cases it can even cause boost to drop off at high rpm. This is because the wastegate can't flow all the exhaust gas the engine is making which causes a buildup of backpressure in the exhaust manifold and a loss of efficiency.
In short, the higher your performance the bigger wastegate you need.
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