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Post by DLBgt on Jun 18, 2004 11:53:04 GMT -5
Does anyone know how to bore out the throttle body on a 3S-FE
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Post by White87GT on Jun 18, 2004 12:13:14 GMT -5
Does anyone know how to bore out the throttle body on a 3S-FE I dont know how to, but.... It's do able, but you have minimal power gains unless you port the intake manifold at the same time. Think about your engine as a tunnel, you have different sections. Intake/Throttle Body/Intake Manifold/Pistons-Cylinder Head/Exhaust Manifold/Header/Exhaust. To get good power gains, you have to open up each of those. Just doing the throttle body will open up one section, but with out an intake or a ported manifold, it wont do squat. I hope that you can understand that analogy, I can try another one if you didn't.
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Post by DLBgt on Jun 18, 2004 12:15:00 GMT -5
thanks for the reply
i'll try the whole manifold
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Post by White87GT on Jun 18, 2004 12:19:11 GMT -5
thanks for the reply i'll try the whole manifold Get an intake at the same time. Then you'll be able to notice more power gains. Or, just to the standard I/H/E or Intake/Header/Exhaust. Maybe add a hi-flow cat. That's the best bang for the buck. Then go to the most expensive stuff such as porting/polishing. No problem man, if you have anymore questions, ask away.
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Post by blck87gtconv on Jun 20, 2004 5:26:09 GMT -5
Well, you have the issue of having only so much you can bore out of the stock TB before you've exhausted the supply of metal.. which would also be useless if the intake manifold's port is the stock size.. since restriction is still inevitable. If you are serious about this, then check out the NA forum at www.celica.net 's messageboard.. John L. and Schmleff have had a project going with it for quite some time.. for a 5sfe (which is eerily similar in design to the 3sfe.. I swear.. half of the parts are interchangeable :hehe: ) -Jason
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Post by RioCyber on Dec 28, 2004 12:31:00 GMT -5
which would also be useless if the intake manifold's port is the stock size.. since restriction is still inevitable. hm not quite true, because, if u get more air comming to the restriciton u have higher air flow (pressure) coming out of the restriction (VENTURI EFECT) , IMO the diffrence will be marginal and no gains will be noticable.
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Post by White87GT on Dec 28, 2004 13:21:11 GMT -5
hm not quite true, because, if u get more air comming to the restriciton u have higher air flow (pressure) coming out of the restriction (VENTURI EFECT) , IMO the diffrence will be marginal and no gains will be noticable. Right. Very marginal.
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Post by racerb on Dec 28, 2004 15:47:15 GMT -5
Hey your best bet for this mod, is to have the whole assembly extrude honed, as it's the only real way to get a complete job from top to bottom. This process is best because it actually flows through just like the air will flow, as it is an abrassive goupe under pressure. Check with Extrude Hone Corp. (562-531-2976) in Paramount, CA, they can give you all the details of how it works and what it cost.
racerb ;D
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