S2000 Under The Hood S2000 Technical and Mechanical discussions.

Heated Throttle Body???

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Old Jan 16, 2003 | 05:32 PM
  #1  
Chiung's Avatar
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From: veritas caput
Default Heated Throttle Body???

I read in a post that the throttle body has coolant running through it. Is this correct?

If so, would it be possible or beneficial to bypass the throttle body so that hot coolant does not heat soak the TB?

Coming from the Corvette world, this was a common mod for us southerners not concerned about the benefits of heating the TB on a cold day. For those of you up north, I don't know that this mod, even if do-able and beneficial, would be advisable year-round. Something about the butterfly possibly freezing open
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Old Jan 16, 2003 | 06:56 PM
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I've performed this modification on my car.

Yes there is coolant running through the Throttle Body in stock form. You are also correct that this is a measure meant to prevent the plate from freezing open! Just grab some 8mm ID hose and run the bypass. I cannot verify if there is a statistical gain in wheel horse power or anything like that. This is just too small a modification to spend the money to dyno.
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Old Jan 17, 2003 | 04:51 AM
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From: veritas caput
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OK!

Can't hurt. Cooler is always better down here. Any other virtually free mods?

Thanks
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Old Jan 17, 2003 | 06:10 AM
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If you change out the intake manifold gasket with a Hondata gasket ($60), it will block the coolant to the TB, and reduce heat soak into the manifold. You can read about it Here.
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Old Jan 17, 2003 | 07:24 AM
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[QUOTE]Originally posted by gernby
[B]If you change out the intake manifold gasket with a Hondata gasket ($60), it will block the coolant to the TB, and reduce heat soak into the manifold.
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Old Jan 17, 2003 | 07:51 AM
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[QUOTE]Originally posted by Chiung
[B]OK!

Can't hurt.
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Old Jan 17, 2003 | 08:07 AM
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From: veritas caput
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Jerry - is it fairly obvious where the bypass needs to go? I think I will do this until I get around to the Hondata gasket.

Gernby - thanks for the link. I have heard good things about the Hondata gasket, but that is the first comprehensive article I have seen about the install and subsequent evaluation. May be a good rainy day project. Did the article mention how long the mod took to accomplish?

Peter - spare and tools already gone! Thanks. I think that
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Old Jan 17, 2003 | 09:16 AM
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Plan the best part of a day for the gasket install, mostly because of a few bolts that are very difficult to reach. Also, marcucci's site (the link above) shows the TB bypass at the very end of the instructions.
[Edit: Oops, I guess it doesn't show the bypass! I'll try to remember to take some pics; in the meantime try a search.]

Honda went with cast iron A-arms for strength, and since aluminum wouldn't save *that* much weight (they are already very slender). I've never heard of lightweight control arms for this car.
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Old Jan 18, 2003 | 10:29 AM
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dont forget to leave you washer fluid reservoir empty...thats almost a gallon and a half of liquid....gotta geep that near 50/50 weight dist if you remove the spare and jack.....not to mention an intake....PRM is very light, and about 30 min to install.
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