Outer Limits 4x4 Board

Hi Guys. I'm tossing around ideas about improving the nasty alloy intake pipe that runs between my MAF and my throttle body right over the top of my extractors and I'm after comments.

1) Make a heat shield to go over my extractors - I've got some 1.5mm stainless sheet that I was going to fold to shape and line with some heat shield material (like ACL's stuff).

2)Replace the alloy pipe with a small intercooler. It would need a custom bracket that would bolt to the existing intake pipe mounts, a suitable scoop fitted and rubber seals. I would have a second scoop like plate underneath that
It's a little bit ricer I know but would look cool.

3)Wrap the alloy pipe with some of the ACL shield material.

My main question is whether there is any significant benifit to intercooling NA engines - G16B's in particular and is a ~300mmX150mm IC going to do much cooling anyway. If it a waste of time I'll just go the shielding route.

Cheers

running snorkel?

i would have to say a waste but do a shield.

the orig exhaust manifold had a shield on it

nicbeer wrote:running snorkel?

i would have to say a waste but do a shield.

the orig exhaust manifold had a shield on it

Not yet, thats also on the cards.

From what reading around on google I've done IC'ing NA egines seems to be a waste of time when intake temps are already low/ambient (ricers who do it seem to be treated with much scorn). I might try shielding and snorkel first and then stick an air temp probe in to see if things are still hot. If they are then maybe I'll try an intercooler. Worst case scenario I can sell the zook to a 18yo who wants a fully sic strip cruiser.

IMO, the intake obstruction caused by running an intercooler on a n/a motor will result in a significant loss of horsepower

Well its technically possible to charge cool a normally aspirated engine........ but unless your using dry ice ( or an expendable coolant ) then the power taken to pump the heat out of the charge will be more than any power gains.

Now - if it was boosted then that's a very different story.

MightyMouse wrote:Well its technically possible to charge cool a normally aspirated engine........ but unless your using dry ice ( or an expendable coolant ) then the power taken to pump the heat out of the charge will be more than any power gains.

Now - if it was boosted then that's a very different story.

Well I do have a near unlimited supply of LN2 and dry ice

In hindsight i was really overthinking the problem. My thought was if my intake temps are high (ie well above ambient) because I've got an unshielded exh manifold and/or no snorkel then I could intercool back down to near ambient after all this is what IC's are for, cooling hot post charger air back down.

But... If I've got heat issues from no heat shield and no snorkel I might as well address those problems directly. Its proably cheaper and involves less heartache anyway. Forget I asked.

Alternativly I could get a honda generator and one of those portable air cons and hook it up to my intake it would make for a good youtube video anyway.

You would be surprised just how much power it would require to use refrigeration to cool the intake charge, i'd stick with your idea of trying to get cool air into the engine via shielded ducts etc etc.

It certainly can be a challenge as the engine bay internals all heat up after awhile and can be very difficult to do much about.

Keep in mind that in really cold weather a bit of heat added to the air is a good thing.