How should i adapt charge pipe to twin throttle body

[jrbuckne1]

Trying to adapt single 3" charge pipe to the 2" dual throttle body, thinking of getting fab shop to make an aluminum Y pipe and use silicone couplers. Any other ideas?

 

[DON]

How about a plenum box similar to what is used on naturally aspirated intakes? Maybe someone with more knowledge of fluid dynamics background will pitch in

 

[Walken100]

I've seen dual throttle bodies used in turbo setups a bunch. DFW speed syndicate (https://www.facebook.com/DFW.SpeedSyndicate) had a mockup with the stock injection so they may have or know of where to get one. I did find one previously but it took a while......

 

[drag-200stang]

Can someone post up a pic of the plenum without the throttle body.
It is harder to seal an oval with hose clamps than a round tube.

 

[Walken100]

Can someone post up a pic of the plenum without the throttle body.
It is harder to seal an oval with hose clamps than a round tube.

 

[jgregg13]

Adapt a single hole throttle body to the EFI intake. I used one off a 5.0 HO v8 from the junk yard. So the TPS and IAC should be compatible. The flow into the plenum does not look to be ideal, but that's where boost will compensate. I later made a better adapter plate out of a singe piece of 3/4" thick aluminum to replace the one shown made from two pieces of 3/8" plate.

https://imgur.com/a/dxmO3a2

 

[jrbuckne1]

I've seen dual throttle bodies used in turbo setups a bunch. DFW speed syndicate (https://www.facebook.com/DFW.SpeedSyndicate) had a mockup with the stock injection so they may have or know of where to get one. I did find one previously but it took a while......

Thank you, ill check em out

 

[jrbuckne1]

Adapt a single hole throttle body to the EFI intake. I used one off a 5.0 HO v8 from the junk yard. So the TPS and IAC should be compatible. The flow into the plenum does not look to be ideal, but that's where boost will compensate. I later made a better adapter plate out of a singe piece of 3/4" thick aluminum to replace the one shown made from two pieces of 3/8" plate.
View attachment 27393

https://imgur.com/a/dxmO3a2

This is awesome! Great work! I have a new option to think about

 

[Frank]

This is awesome! Great work! I have a new option to think about

As you consider converting to single vs dual, remember that throttle response off-idle will be more aggressive with the single- by a good bit. The factory duals are progressive linkage also. Much easier to take off gently with the factory 300 TB.

 

[jgregg13]

As you consider converting to single vs dual, remember that throttle response off-idle will be more aggressive with the single- by a good bit. The factory duals are progressive linkage also. Much easier to take off gently with the factory 300 TB.

The progessiveness of the TB linkage may not be that much of a concern, after all the mustang didn't have it. If it is an issue, you might be able to make or adapt the secondary lever off the twin throat TB to the Mustang TB.
But don't forget, you're driving a Ford, you'll need all the throttle response you can get! Oops, I'm on the wrong forum for that kinda talk.

 

[Frank]

The progessiveness of the TB linkage may not be that much of a concern, after all the mustang didn't have it. If it is an issue, you might be able to make or adapt the secondary lever off the twin throat TB to the Mustang TB.
But don't forget, you're driving a Ford, you'll need all the throttle response you can get! Oops, I'm on the wrong forum for that kinda talk.

Yes to be clear: I'm not discouraging the single. It's 100% driver's preference. Personally I struggle with my wife's truck and other single TB setups, tend to spin out leaving the driveway, then remember to use a feather touch. Prefer the gentler pedal response.

 

[DON]

But don't forget, you're driving a Ford, you'll need all the throttle response you can get! Oops, I'm on the wrong forum for that kinda talk.

At least us ford guys are driving our fords, —not sitting in the shop!!