Anyone gutted a 01+ intake manifold? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-08-2009, 01:51 AM   #21
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Interesting loss of tq down low.

Might not be what I am looking for afterall since I do autoX and need that tq to pull out of low speed/low rpm corners :(
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Old 11-08-2009, 11:53 AM   #22
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Originally Posted by Doppelgänger View Post
Interesting loss of tq down low.
That's going to happen. It is a very similar setup to Toyota's TVIS system on Toyota's 4AG's and 3SGTE. The reduced intake runner area creates faster air velocity and more torque at lower RPM. Looking at the 01+ manifold, I think it'll offer the best of both worlds. You can open up the plenum volume AND retain the plate system to increase low end torque.

The plates do not offer that much of a restriction. Their cross sectional area does not effect the flow enough to really matter at higher RPM. With a properly designed manifold, you would barely see any top end loss and nice gains in low end torque using a variable runner system.
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Old 11-08-2009, 12:29 PM   #23
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Yah Im not terribly impressed by that dyno, maybe just building a manifold from scratch is a better idea
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Old 11-08-2009, 12:46 PM   #24
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Originally Posted by ArtieParty View Post

This Gutted 99 manifold is currently for sale if anyone wants it.
If anyone is thinking about doing this you might want to buy it. I gutted mine and it is a fair amount of work, say 8-10 hours even with a die grinder and the proper die tools.
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Old 03-22-2010, 09:14 AM   #25
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Still got that gutted Intake Manifold for Sale???
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Old 03-22-2010, 10:00 AM   #26
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Still got that gutted Intake Manifold for Sale???
I do actually. I have to check with a local guy first if he wants it for a 2.0 built motor. Otherwise, I'll post it for sale here. Damm, I have a lot of stuff that I have to post for sale. I guess it's time to get in the garage and start taking pics.
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