ptuomov

The runners look money.

Apropos nothing: The 4-valve modular Ford engine is a 928 knock off with some improvements. This is good news for us 928 owners for two reasons: First, as imitation is the sincerest form of flattery, this provides a helpful collective ego boost. Second, in case someone is working on a sheet-metal intake, all the intake manifold R&D that has been done on the 4-v Fords should pretty much "bolt on" to 928. For example, see:

http://www.musclemustangfastfords.co...est/index.html

http://www.amazon.com/Building-5-4l-.../dp/1932494200

ptuomov

This looks similar to the Boss 290 Ford intake that makes all sorts of power from a 5.4 liter 4-valve engine:

ptuomov

If you have a horn split, I think it might be worth it to put it in a flow bench and record the flow with the joint clocked at different angles.

I have no idea what angle would best, which probably doesn't come as a shock to many! ;-) . However, if I'd have to guess I'd guess the cork screw angle that makes the air screw in in a helical pattern would be the best flowing. If you measure the flow, I'd love to learn whether it makes a difference.

atb

It's close, so far so good.
I won't know for sure until I get the air box constructed. The tray will sandwich between the ITB and adapter, so that will raise the horns slightly. Then I have accomodate the thickness of the lid, and then allow enough wiggle room for the engine to cavitate without forcing the airbox into the underside of the hood.

The airbox will feed from the front like Louie and Hammer.

atb

I hear ya, I could be chasing design details forever. Ken was saying the same thing. Get it so it fits, run it, and then if its not enough then start tweaking with it. He wanted to fab up some lock collars to hold the horn halves together so that we could rotate the horns on the dyno and optimize them that way. At some point you just have to go with "good enough" I guess.


I'm okay if it has to come through the hood, but I honestly think your tray will work. The mouths of the horns are still inboard of the ITB's somewhat. If you look at the pic from the top, you can see that they end about 3/4" inboard. I think that should be enough clearance between the side of the box and the inlet. Definitely more room than a stock S4.


Hey Tuomo,

Probably not going to invest in the flow bench work, at some point I thnk I just gotta run it and see what happens. It would be interesting to see what would happen with the flow, if anyone is real curious and has access to a flow bench, I could send one of the horns out for testing.

atb

Actually in thinking it about it, I could probably just rotate the inboard horns (#3 and #6) and that would create enough clearance for the other 6 to stay as they are. We'll see. Still curious if anyone has any input on whether having the horn rotated so the bell faces upward is a big no-no.

john gill

Great work Adam

If only my dyno lab was in your country I would love to be involved in the testing , good luck with it all .

mark kibort

awesome!!

6.0-928S

Hi Adam,
My intake feeds from the rear, near the base of the windshield. The scoop faces the rear..........

Hammer

atb

That is awesome Hammer, did you hand-form the scoop? Looks like a lot of time invested there.

6.0-928S

Thanks Adam. A friend of mine in the Hemi club made it to my specs. He makes fenders, hoods, etc. from scratch for the old factory Hemi Super Stockers. I had some Hemi parts he wanted so we made a deal. He made the scoop & I made the opening, the screen, & retaining plate using titanium bolts. (gotta keep the weight down) It'll stick through a hole in the hood & be a shaker scoop. The scoop IS my airbox.

Hammer

Mongo

Hammer how would that look on the motor? For some reason I can't visualize it? (Lack of coffee for adequate brain power right now)

6.0-928S

Just imagine it facing forward & then just turn around!
I'm not hijacking Adam's thread. I'll start a seperate thread soon & show it in progression.

Regards, Hammer

Mongo

Cowl induction... I like it!

Tom. M

Just look at a 78/79 trans am........ same look