My 30 minute mod for the evening...BBK 70mm TB

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Ecoboost_xsport

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So @FiveLeeter918 at Ortiz Performance hooked me up on a VERY quickly shipped BBK 70mm throttle body (yes, it IS from 1 2005-2010 V6 Mustang). Been thinking bout this mod but was never 100% sure it fit until I came here. Anyway, got it and test fit it to the IM I have sitting on the bench.

Although it is an awesome piece, there were two small details my OCD had issues with. 1) I'll be porting the IM just that small bit to get it to match the TB, but have some concerns about how close it comes to the ring-style gasket groove if I do that and 2) the bolt holes where a bit larger than the hardware and just fit very sloppy. If you ever wanted it dead-nuts centered, you'd kinda have to eyeball it and tighten it down. Well, I figured I'd address issue #2.

I had some 5/16" OD 304 stainless tubing laying around and decided to see if there was any sort of "dowel" setup I could do. Lucky for me, the holes in the TB are EXACTLY 5/16". The OD of the tubing was soooooo snug (insert joke here). And the ID for the hardware sooooo perfect. So only problem was...the recessed holes in the IM weren't 5/16". Well, tubing was easy, measured what I needed and cut a few pieces on the lathe (you only need 2 to center). Unfortunately, the IM doesn't lend itself to be easily mounted on a table for a mill, so I had to do this one by hand...just took a 5/16" drill bit and sunk it in about 1/4"-3/8" deep.

Slapped the dowels in place, and fit is perfection. No movement whatsoever, centered exactly to the opening of the IM (which I will now port to match) and all this with some extra tubing laying around and a quick turn of the lathe and some careful drilling. Viola!

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BBK 70mm vs stock. Stock is 65mm, for those who were wondering.
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Ecoboost_xsport

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very cool! I completely forgot to mention the tediousness of getting it to not look off center, but this is a great idea.

Yeah, was thinking that BBK made those holes pretty large (5/16") for some hardware that is metric M6 I think. Pretty sloppy fit. Worked nicely with the dowels.

Now I'd like to port the opening to IM to match the 70mm (its 68mm). It doesn't sound like much, but when I take my dial calipers to see how far it would go, it gets VERY close to that groove for the IM/TB gasket. If it doesn't cut into the groove, it may be pretty thin of an edge. Am I getting too deep into the woods trying to get that 2 mm so that its smooth? I'd like to port it, but if it gets into the area of the gasket, I may have to entertain the idea of making a flat gasket for it, which I'm on the fence about.

Anybody port their IM to match the BBK? If so, how close was it to the gasket? Or am I just worried over nothing? lol
 

FiveLeeter918

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I just shipped my manifold out for porting. Once completed I'll post some pics. Was quoted $225 so we shall see how it does once the phenolic spacers are ready.
 

Ecoboost_xsport

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You'd likely be better off starting with a block of aluminum and machining your own honestly.

Yeah, kinda was thinking this may be the route I have to go. Only reason I was looking at the various TB spacers out there was to see if their ID was smaller or equal to 68mm, I could use it as a starting point to port it from 68mm to 70mm instead of starting completely from scratch...
 

Angrymongoose

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Plus one for the yeeting. Followed by custom work.

That does get pricey though.
 

skyshadow07

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Stupid question here, what model are you buying the TB for from BBK? I can only find 73mm 3.5 ecoboost TBs
 

skyshadow07

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Well ****, that's how much Ford wants for one. Obviously go with the upgrade.
 

2014RedBull

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Any updates on the BBK 70mm TB mod? I bought another intake manifold. I plan on sending them out to shop like Super Six or Wilson manifolds. See what a professional could do to make the engine breathe better. Thanks!
 

skyshadow07

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What happened since I left? How did you guys run off Ecoboost_xsport? Dude was one of the main modifiers and was constantly pushing the limits of the platform.

 

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