Intake Restrictor Plate???
07-20-06, 05:29 PM
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Intake Restrictor Plate???
Is there any downside to running an intake restrictor plate to control a slight boost creep. Intake pipe is 2 1/2" ID, was thinking of 2" flange to keep boost @ 13psi, right now 15psi. T04E 57 .84 a/r p wheel, stock ports, 3" open exhaust, HKS 50 mm wastegate 11 psi spring. A high flow cat keeps me at 13-14psi however the car is track oriented (road race) and want to keep the exhaust open for flow and heat..Feed back welcome..
07-20-06, 07:35 PM
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in my opinion its a bandaid fix, and cause an overall drop in output being that its giong to restrict airflow at any rpm
Try porting the hotside outlet, or upping to the next available a/r or something else. ill go get my books see if i can think of anything else
Try porting the hotside outlet, or upping to the next available a/r or something else. ill go get my books see if i can think of anything else
07-20-06, 07:50 PM
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Originally Posted by CrackHeadMel
in my opinion its a bandaid fix, and cause an overall drop in output being that its giong to restrict airflow at any rpm
Try porting the hotside outlet, or upping to the next available a/r or something else. ill go get my books see if i can think of anything else
Try porting the hotside outlet, or upping to the next available a/r or something else. ill go get my books see if i can think of anything else
Thanks for the feedback...how would upping the hotside (1.00) help keep the boost pressure down? I would think it would flow more due to less restriction??
07-20-06, 08:11 PM
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my thoughts are (and correct me if you think im wrong)
with the current setup your running, you are overspinning the compressor wheel. a larger hotside would alow you to flow more/the same exhaust volume with a slower turbine / compressor speed
i wouldnt jump to a 1.0 right away, id try to move up a little slower
with the current setup your running, you are overspinning the compressor wheel. a larger hotside would alow you to flow more/the same exhaust volume with a slower turbine / compressor speed
i wouldnt jump to a 1.0 right away, id try to move up a little slower
07-20-06, 08:26 PM
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Originally Posted by CrackHeadMel
my thoughts are (and correct me if you think im wrong)
with the current setup your running, you are overspinning the compressor wheel. a larger hotside would alow you to flow more/the same exhaust volume with a slower turbine / compressor speed
i wouldnt jump to a 1.0 right away, id try to move up a little slower
with the current setup your running, you are overspinning the compressor wheel. a larger hotside would alow you to flow more/the same exhaust volume with a slower turbine / compressor speed
i wouldnt jump to a 1.0 right away, id try to move up a little slower
I think clipping the turbine wheel would give the effect you speak of. I would think going down in hotside a/r would choke the max flow creating backpressure and slowing down the turbines ability to keep spinning faster.
07-20-06, 08:35 PM
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clipping would work also, i have no personal experince in it but have read about it many times
A smaller a/r IE .7x would cause the turbine to spin faster at the same load/rpm than a larger a/r
picture blowing on a pinwheel though a straw. blow though the big straw and the wheel spins slightly, blow on it though a small straw and it spins much quicker
theres a paragraph on what i just mentioned and the turbo inlet restrictor in corky bell's 'Maximum Boost', however i cannot find my copy to accuratly quote it
-Jacob
A smaller a/r IE .7x would cause the turbine to spin faster at the same load/rpm than a larger a/r
picture blowing on a pinwheel though a straw. blow though the big straw and the wheel spins slightly, blow on it though a small straw and it spins much quicker
theres a paragraph on what i just mentioned and the turbo inlet restrictor in corky bell's 'Maximum Boost', however i cannot find my copy to accuratly quote it
-Jacob
Last edited by CrackHeadMel; 07-20-06 at 08:37 PM. Reason: i suck at teh spelling
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07-28-06, 12:44 PM
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Originally Posted by stylEmon
Thats what they did in the 70s to control boost before using a w/g lol
I'd say not only switch to a 1.0 but goto a better manifold, let me guess u have an hks cast unit?
I'd say not only switch to a 1.0 but goto a better manifold, let me guess u have an hks cast unit?
How does moving up in hot side a/r control boost creep? With respect to manifold. Feed (ss autochrome) copy..
07-28-06, 02:05 PM
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Originally Posted by 1Revvin7
Is you're w/g discharge rerouted back into the DP? If so post some pictures of how thats done.
07-28-06, 02:12 PM
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Originally Posted by 1Revvin7
Is you're w/g discharge rerouted back into the DP? If so post some pictures of how thats done.
07-29-06, 08:12 AM
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Originally Posted by 1Revvin7
Thats defineatly far enough out from the turbine, however are there any right angles in the dump tube?
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