Builds 80 series where to start! Again.... (14 Viewers)

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Hmmm so with Hypertune likely not making a 1FZ manifold. I am kind of looking for other options. Not a lot out there. I did find a cheap one that definitely looks cheap, but I wonder if I could have it reworked a little and then coated?


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The goal is a couple things. Mostly to change the position of the inlet. With a large front mount crossflow intercooler the hot side will be on the passenger side where the turbo is and the cold side will be on the driver's side. Additionally a larger plenum would be ideal. Plenum size is supposed to be 1.48-1.58x the engine displacement. So 4.6Lx 1.53 = 7.38L. Pretty massive.
 
Well that includes the runner volumes as well.

The 1FZ is a big engine. If you take the length of the head roughly 18" and make the plenum 4" deep and taper from 5-7" in width and 1.5" runners 3.5-4" long you would have roughly 7.5L

Here are some good pics of MS75's custom intake
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1FZ vs 2JZ manifold. It is a big beotch. lol
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Yeah really cheap! $375au. The Hypertune would likely be $2200-2400. :-/ But since Hypertune won't even make them I need something else.

Seriously, there isn't much to the design. A couple of flanges, some runners and a manifold. If you don't get too crazy with the aesthetics it should be a fairly direct custom job.
 
If only I weren't...busy...doing...stuff :p

I see flanges CNC laser cut. I see the runners CNC bent and cut. I see the intake flanges getting some mill work. I see a CNC lasered box which could be CNC brake'd and then all welded. You have random bosses for mounting s***. In my eyes it would cost more to have my engineer do up the solid works file than it would be to make a handful.
 
Could the stock intake be used for the flange, injector bossed and runners? or is it too small?

Are the injectors retained somehow for boost, or are they just press fit o-ring style?
 
The stock intake could maybe be used to retain the flange, but the runners are curved because the bottom and top together make a 180 degree turn, so each section makes a 90 degree. The injectors are sandwiched in the runners by mounting the fuel rail. But they just mount into both the runners and fuel rail with an o-ring. The fuel rail bolts down so that is the retention.

This is a manifold built off the stock lower manifold.
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