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70 mm throttle body

1tacoplease

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Been wanting to buy this for a while now. I tried car-part.com but was unsuccessful. FJ or 4 runner 70 mm throttle body.
 

sixstringdave

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Will a bit bigger TB help power on a mostly stock set up? This has my curious now. If you know what year FJ/4 runner they are on you could try some wrecking yards in your area
 

Can XR

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I found the 76mm in a wrecking yard. That would be the best place to start.
 
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sixstringdave

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I'll ask again. Does a bigger TB help a NA engine? I was thinking it would just help a FI engine. What kind of numbers we talking here? I might be able to snag one off my cousin's wrecked FJ
 

Toyota Tech

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Justin is correct, its only as thick as it needs to be to be sturdy and have enough threads for both the throttle body and the supercharge iintake or composite intake or whatever else your running it with. It does taper however from large on the throttle body side to slightly smaller on the intake plenum side. This creates a nice venturi effect (from my knowledge / experience not scientifically proven perhaps gadget will chime in?) andd speeds up the intake charge, I especially like this on my TRD Supercharged truck because it picks up the fuel from my 7th injector nicely.
 
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Well my intake sometimes slips. Would a spacer help the fit. It only slips at the throttle body. It's such a tight fit, it takes two people to hold it down to re tighten it
 
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