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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 07-22-2016
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throttle body swap

I'm looking to swap out my throttle body with something larger. I don't know their dimensions off hand, but would a throttle body from a 5.0 explorer or 4.0 explorer bolt up?

Looking for a bolt-on throttle body, as I don't possess a welder at this time nor very strong fabrication skills.
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Old 07-23-2016
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So far it's appearing that a throttle body swap is (according to various sites) a net 0 gain. Well, it was a nice thought anyway.
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Old 07-23-2016
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You have a 50MM throttle body now, on the 3.0l Vulcan engine

The Ford Escape 3.0l Duratec engine has a 60MM Throttle body, and will bolt on but does require modification, there are "How-Tos" for this

Morana Racing offers bolt on intake/throttle body parts: Tom Morana Racing Engines

No on the 4.0l/5.0l throttle body

Yes, unless you are changing the engine parameters, so it needs more air, putting a larger throttle body on doesn't really do much.
Like putting on a larger air filter doesn't do a whole lot for performance

Automakers don't tend to want less performance from an engine, so usually don't restrict intake or exhaust flow, for that reason.

But cost is also a factor, a fan clutch is less expensive than an electric radiator fan, so you have a fan clutch.
If you want a little better performance and better MPG then changing to an electric fan will for sure do both, not much but not 0 either

Last edited by RonD; 07-23-2016 at 09:54 AM.
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Old 07-23-2016
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Well, that's a shame. I guess that's why very few people have done that sort of swap. thanks for the info. Would rather find out now, than get a throttle off something and find "oh hey, this doesn't fit" to the tune of 25 bucks or so. Thanks for the info.
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Old 03-23-2017
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just a quick question what about the 09 4.0 sohc models will the 4.6 or 5.0 tb swap or not just wondering because i may have a doner for this crazy idea that i have.
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Old 03-24-2017
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Quote:
Originally Posted by jugerknot View Post
just a quick question what about the 09 4.0 sohc models will the 4.6 or 5.0 tb swap or not just wondering because i may have a doner for this crazy idea that i have.
Welcome to the forum

You should start your own thread just so you get more readers of it.

Buy a vacuum gauge and some vacuum hose.
Connect hose to intake vacuum port, may need a "T" to get the extra port
Run the vacuum hose into the cab, E-brake cable opening usually has enough room

Put vacuum gauge where you can easily see it while driving.

Drive somewhere where you can get maximum speed without getting a ticket, lol.
Drive truck up to speed and watch vacuum gauge at WOT(wide open throttle) for 30second to a minute, you want to be cruising at WOT.
You should see under 2" of vacuum at this time.
1" to 1.5" is great, but under 2" is OK on most engines

This means there is no air restriction on the intake system.

If you get below 1" then you could have exhaust restriction

Intake vacuum is what keeps air/fuel mix flowing into the cylinders when intake valve opens, if exhaust is restricted then there will be pressure in the cylinder when intake valve opens so little or no new air/fuel can flow into cylinder and you "top out" on power.

So low vacuum at WOT under load is good, but too low is not good

Vacuum gauges are cheap, $20, and a great tool to have to diagnose engine problems.
Engines are self powered air pumps, so a pressure gauge can tell you ALOT about engine/pump condition

Last edited by RonD; 03-24-2017 at 10:51 AM.
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