Intake Manifold modification. Input Please!

Mad Menace · Post by **Mad Menace** » Wed Nov 18, 2009 8:18 pm

Quick question for everyone,

Has anyone ever made a "riser" of sorts to modify or "flip-flop" the intake manifold by means of making/buying 2 identical flanges, flipping them 180 degrees out from each other and adding 4 pipes inter connecting them?

If you have what was the outcome? Did it cause any Vacuum or flow problems?

Edit:
What if said "riser" were to be cooled by means of heatsink? (an easy mod)
I believe that could help to dramatically reduce intake temperatures.

This thing could be made up to 6" long in my case and never interfere with anything else under my hood. (93' Mitsu Mighty Max)

Bill Hincher · Post by **Bill Hincher** » Thu Nov 19, 2009 11:24 pm

risers are used in wet intake manifolds, when more mixed air/fuel volume can be collected under the carburates throttle plates, that way you have less time required to accelerate under load

the intercooler should be able to control the income air charge temp

Mad Menace · Post by **Mad Menace** » Thu Nov 19, 2009 11:27 pm

but i am looking to FLIP the intake, not so much reduce temps.

Im swapping a 2g 4g64 DOHC into my 93 MM where a 4g64 already exists.

Problem I faced today on this was actually finding a pipe to work with.... didnt find one that would work.

Bill Hincher · Post by **Bill Hincher** » Fri Nov 20, 2009 10:30 am

I will not knowingly sell any work that would fail an EPA test, if you are street driving, I will not alter an intake manifold, having said that, you can PM me and make arraingements for your racing vehicle

the first gen intake was pretty easy to exchange ends on

but on requests I also convert the EVO intake and install the EGR ports to comply with EPA standards

I just built the EGR passageway into the intake flange, it works well and it out of sight so it doesnt raise any red flags

Mad Menace · Post by **Mad Menace** » Fri Nov 20, 2009 7:51 pm

That is some pretty AWESOME work you've done there my friend!, and in the future if I have a need for some custom milling work I will definitely make sure that you are the first to know!

But as for this intake I think I got it covered now, and it was inspired by some of the pics of your 1g intake manifold above. I believe I have a 2g (not that it makes much difference other than port size) but what I did today was took inspiration from you and ran with it, first I drilled a BIG hole on the south end,

and chopped off the throttle body flange on the other end.
Welded the flange back on the south end over the hole, welded an aluminum plate over the hole where the flange used to be, and voila! RWD 2g Intake manifold.

Thanks for the Inspiration Bill!!! Your a life saver.

Bill Hincher · Post by **Bill Hincher** » Fri Nov 20, 2009 9:32 pm

good work

Mad Menace · Post by **Mad Menace** » Fri Nov 20, 2009 10:37 pm

Thanks man, it took me about an hour to do once I got my idea in mind and it cost me a staggering .60 cents for a 3/4" x 3/4" x 4" and a 4" x 4" x 3/8" piece of aluminum for blocking off the hole and building a new throttle cable mount for the top.

tektic · Post by **tektic** » Sun Jan 29, 2017 10:55 am

I know this is super old But I'd really like to see the way this fits in your mighty max! would like to see the new the throttle cable mounts too.