Making a custom lower intake

[mannysc]

whats up Wynn ya gonna mount a 8/71 to a 3.8 i mean everything is bigger in texas.

I am working on a m112 inverted on a all manny made lower intake all sheet alluminum as soon as I get my welder back I played with her knobs to much and had to send her out to have her knobs done.

also my die grinder died. so time to get a new one everything is going out at the same time for me damn harbor freight!! lol

home of disposable tools like the bic lighters of tools.

but I do now have a splitport 3.8 to do a mockup on got it free 30k on it

looks like I can make the sc and split ports out of the same basic flange just cut ports in diff places and bolt holes other than that i can use a manifold flange for the split port on both its just taller .

I should have a mockup done if a few weeks . I dont however see a way to fit a water to air ic in manifold valley.

[seawalkersee]

I still think I will do the water to air. If it has to be water cooled, I would plumb it into the intercooler as it sits in the stock location.

Chris

[mannysc]

the problem I had was the 3.8 is small and the ic units i found are all to long or to wide to fit some are tall so I made mine from a heater core works great so far, see my webshots inverted blower. with this ive seen air temps in the ambeint temps on a 104 day with water and small radiator to cool it with ice in tank ive seen manifold air temps in the 40 deg f range.at 15 lbs boost on a 104 deg f day.

[Cliffloehr]

The pictures on your links (above) are worth a 1000 words… thanks Manny!
I'm ready to start fabricating the intake and TB-to-Blower inlet on the inverted blower for my 3.8 Mustang. Because of the split-port heads, I have a slightly different lower intake to create, but I plan on mimicking much of what you have done.

Did you delete the EGR?
Does opening up the rear inlet of the blower make a noticeable improvement?
How’s the heater core holding up? (I’m afraid of leaks and was thinking of making one from scratch out of copper using stronger copper – your thoughts?)

[Cliffloehr]

Manny,

What water pump did you use for your inter cooler?

Thanks.

[mannysc]

Im not using the inverted setup right now but the heater core worked great its used to 16 lbs of hot water in my application it only see's 15-16 lbs of boost and the water is cold .

it does see 18-inches vac and 15 lbs boost within a few seconds but it seems to work great my sc does not have egr 92's did not have it .

the D port has made a big difference I see 11 lbs of boost at 2500 rpms and 14 lbs at 4500 rpms with a ported factory inlet plenum and a 70 mm tb

on the inverted I saw 15 lbs at 4000 rpms and with my lower pulley I seen 16 lbs but be warned inverted the blower makes boost faster and a tune is in order, i saw lower intake temps of 45 deg using iced water in water to air ic .

I made the inlet by cutting wedges out of 3" alluminum pipe and welding them together to make turns weld grind clean then do next then next then i ran a dingle berry hone thru it to smooth it all out . lol dingle berry hone

[Cliffloehr]

This is great information. I studied your pictures pretty closely and saw much of the detail you did. Great job! Why did you switch back from being inverted?

[mannysc]

I had to smog my car so I put stock setup on .

I used a motor home rotory water pump it has a built in pressure reg but dont need it as water flows freely . I used a can I made that I mounted a tbird air cond under dash rad in and put ice in it and water it cools the water in the radiator down to ice temp . then back to ic unit. then back to tank .

I tried to make my own ic unit in the picture of lower manifold and ic unit but it had leaking problems .

the heater core worked best flows air better than the spearco unit I had .

I also had a small motorcycle radiator with fans on it that is hooked in with a bypass switch so i can run air temp water when not at track.


ill send you a drawing of how i had it set up.

[seawalkersee]

In the pic it showed the front of the IC to be the inlet/outlet. Is that correct? Do you have pix of how you made the bends for the IC?

Also, have you ever thought about adding material to the deck of the heads? I know it would take about two days to weld up one head but I think that would be beneficial if you only added .08-.5" of material. Of course you would have to increase the intake length, but you appear to have a good Idea on how to do this.

Chris

[mannysc]

yes inlet and out let are in front I used 1 inch rubber hose to connect and 3/4 inch pipe to route water I bended it in a tubing bender from harbor freight a $5 ITEM

[seawalkersee]

Manny, YOU sir are an ANIMAL.

Chris

[Cliffloehr]

Started milling the split-port lower intake this past weekend.
This picture shows it's progress and intended plan for the intercooler box to be welded on top.