I have found three different throttle body elbows, each has potential benefits. Any suggestions?
I'm installing a blow through MAF which works best in a long straight section of pipe. The intercooler I'm looking at will discharge behind grill passenger side.
The stock ford has a split plenum, log style upper intake with a 2BBL TB.
I'll be using an Offy 4 BBL.


The oblong outlet seems like the best choice for even flow, but I'm only guessing. The low profile and forward mount are pluses for housekeeping.

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1960 Seneca 225 turbo soon to be EFI

This one faces sideways and has the most exaggerated oval outlet.

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1960 Seneca 225 turbo soon to be EFI

This one, being round could be clocked in any direction. It's the tallest option as well.

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1960 Seneca 225 turbo soon to be EFI

Ford makes the single barrel throttle body on the passenger cars and the double barrel throttle body on the trucks and vans.

Single barrel:





Double barrel:





I plan on using the single barrel version on the MAF injection system on my brother's Duster for simplicities sake. There are far more aftermarket plumbing options for the single barrel throttle body than for the double barrel, and there must be an absolute airtight tract between the MAF sensor and the intake manifold. I am itching to try a speed density conversion on my brother's van which will use the double barrel throttle body.

The problem with the double barrel throttle body is that Ford never made double barrel MAF sensors. There is a one year and California emissions package only factory adapter that mates the double barrel throttle body to the single barrel MAF sensor, but those are hard to find. When I converted my van from speed density to MAF I had to cobble up a home-made intake duct and adapter from aftermarket parts and a 1996 Ford truck piece:



The Ford truck adapter piece I used is close, but not an exact match to what is needed to adapt the double barrel throttle body to single barrel MAF sensor. I had to get creative with RTV sealant, hose clamps, and muffler pipe sections inserted into the thin plastic tube.

I would clear out the plenum on the offy and run a plate to mount the single barrel throttle body.

How are you dealing with EGR?

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Casually looking for a Clifford hyperpak intake for cheap.

The 4.9 2 BBL TB has 2 39MM outlets, too restrictive. Of the three 1 BBLs I have, the first one seems like a good place to start.

EGR will be disabled.

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1960 Seneca 225 turbo soon to be EFI

I have that first one (~ 2000 Mustang 4.6L, IIRC) sitting on top of my Clifford in the basement! Should be in use (NA motor) this spring, and turbo likely later on.

Lou

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Home of Slant6-powered fun machines since 1988

Interesting! The 300 six cylinder throttle body I have was the same size as the throttle body I got off a parts 351. I believe that the truck/van throttle bodies are the same across all motor applications, at least in the late 80s to mid 90s range.

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Casually looking for a Clifford hyperpak intake for cheap.

I took the TB and upper intake off the donor 1996 E150 4.9. I think the divided plenum keeps velocity up (?) for better low end torque. Unsure, I've been reading a lot.

I want to get the EFI running with the turbo I have for simplicity's sake, but soon after I believe I'll be designing a new exhaust manifold that may require a different intake to work the way I want it to. If all that pans out, a split plenum long runner log is in the works.

The new turbo will spool later, so I want to see what EFI plus long runner does off boost.

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1960 Seneca 225 turbo soon to be EFI

Lou,
What made you decide on that one?

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1960 Seneca 225 turbo soon to be EFI

It was cheap and large and available. I am going to run it first with the TB directly bolted to the Clifford flange with a 1/4" alum adapter plate, and the IAC bolted directly to a flat section to the right of the TB plate on top of the intake. Might try the long 90 bend mounting later.

Lou

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Home of Slant6-powered fun machines since 1988

ken, I used a Jeep 4.0 Throttlebody..


My car has no Boost but I have had it on the road a s daily driver with megasquirt since 2008..Probably 40,000 Miles since then


Info / Pics in the link:

http://slantsix.org/forum/viewtopic.php ... c&start=30


Greg

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http://www.youtube.com/hyperpack

So, are you guys both running the TB inlet straight up?
I think I'm gonna run the adapter and TB as it is, forward facing with an adapter only, unless I come up with a way to create a "spacer" that will significantly increase plenum volume.

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1960 Seneca 225 turbo soon to be EFI

Greg,
It was your EFI build that inspired my attempt. I'm really grateful that you guys post so freely. All the tiny details eventually get fleshed out that way.
PS congrats on nuptials.

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1960 Seneca 225 turbo soon to be EFI

I agree with the majority here, IF I were attempting an EFI conversion #1 would be my choice. Not that I know here from sic'cum, but it looks the easiest to adapt and closer area wise to the intake mounting area. And the plus of a straight forward intake opening.


Mro

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MRO....

Cheap, Fast, Reliable.... Pick 2...

I think after looking at Greg's set up, which is tried and true, I can confidently go with plan A

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1960 Seneca 225 turbo soon to be EFI