intake manifold - Toyota Tacoma Forum
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#1 (permalink) Old 02-20-2009, 08:08 AM
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intake manifold

This coming weekend im planning on porting my intake manifold i have a 1gr-fe jus got one question is it really worth all the work i gotta go through?
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#2 (permalink) Old 02-20-2009, 10:51 AM
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Re: intake manifold

dunno, but DEF interested in how it goes and the results

I plead the 5th, unless copping to the crime is of my benefit...
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#3 (permalink) Old 02-20-2009, 11:17 AM
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Re: intake manifold

well i dunno about the 1gr but with the 2rz intake mani its been said that the design is pretty damn spot on and while, yes there is room to port and polish, the money and time to do it can be better justfied elsewhere.
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#4 (permalink) Old 02-20-2009, 03:00 PM
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Re: intake manifold

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Originally Posted by LilWhtTaco View Post
well i dunno about the 1gr but with the 2rz intake mani its been said that the design is pretty damn spot on and while, yes there is room to port and polish, the money and time to do it can be better justfied elsewhere.
Just took out the top intake plenum during a recent install, and looking into the manifold, I would say the same for the 1GR. But, if you have the time and or money it could be done. It would probably be a fun project.

What would be awesome is if you got before and after Dyno runs. But then again that will cost more

Have fun.
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#5 (permalink) Old 02-20-2009, 04:23 PM
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Re: intake manifold

LCE claims 10-15 hp gain with their ported intake manifold & bored TB. Would imagine even greater gains with a header, CAI / elbow mod / deckplate mod, URD MAF Calibrator, etc.


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#6 (permalink) Old 02-20-2009, 04:32 PM
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Re: intake manifold

Maybe extrude hone...? abrasive silly putty....

I plead the 5th, unless copping to the crime is of my benefit...
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#7 (permalink) Old 02-20-2009, 04:55 PM
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Re: intake manifold

I'm not familiar, are 1GR manifolds plastic? If so then extrude hone would be a good idea.


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#8 (permalink) Old 02-22-2009, 07:53 AM
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Re: intake manifold

did you mean port matching to the gasket?? I can see that may gain you a few ponies but worth the effort? Its all up to you. If you have time to kill then yeah sure.

Supercharged Cammed Header 3rz!
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#9 (permalink) Old 02-22-2009, 08:18 AM
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Re: intake manifold

-cough-sigh-


the intake manifold on the 1GR 4.0 is plastic.


on the older 2RZ and 3RZ you can get some noticable gains because the aluminum is so think and can be machined down to allow more air flow. i SERIOULSY doubt you are gonna do aything but start grinding on your plastic manifold and punch a hole thru it. five bucks says that the 1GR 4.0 manifold is barely 1/4" thick in its thickest place. i have mine taken off since i have the TRD S/C and i've eyeballed the stock intake a few times, its not thick enough to go grinding on, and it doesn't weigh enough to need to worry about trying to make it lighter. i think if you are wanting more ponies, you need to look into a different "proven" modification rather than screwing you stock intake manifold up.
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