Heat Shield

hmmm, just wondering... is the heat shield over the exhaust manifold on a b16 neccesary? and, does it really help that much ?
its kinda hard to aim the dip stick into the thinggy( you know what im talking about )... especially in the dark... its probably just me, but im lazy.
anyways, just wanted to know if the heat shield could come off without disrupting anything else.:screwy:

You can take it off, but it helps block some heat off your fan assemblies/radiator

hmmm, will it reduce my performance?
at least itll look cooler... * rolls eyes *

I don't think it will reduce "performance". might run a little hotter, and be a little harder on your fan motors, but I don't think it will hurt it really, just possibilities.

too much warm air would easily be fixed by a CAI. im not runnin one on my b16 but the jdm header doesnt have the mount holes anyways.

yeah i have a CAI

I have CAI on my B16, but I also have aftermarket 4-1 headers. But basically I dont think it'll matter if you have it off, my engine bay gets so hot anyways that a little thin metal shield dosent change much.

Well the main difference you guys with the header are missing is the header is a different type of metal, doesn't transfer as much heat as the stock cast iron does. That thin sheet of metal absorbs quite a bit.

Also, having a CAI doesn't effect how hot your fans are running, just effects your intake temp and gives you a spike in power rather than a smooth band like a short ram does.

Can you explain the CIA vs short ram?

CAI = cold engine intake air temperature
Short ram = hot engine intake air temperature

Also, shorter intake tube the louder the sound.

CAI = cold engine intake air temperature
Short ram = hot engine intake air temperature

Also, shorter intake tube the louder the sound.

I get the hot vs cold, but wouldn't cold always be better? How can hot give you a longer power band?

I used to have a link to a indepth comparison between the 2. Pretty much, on the CAI, at a certain rpm the HP spikes and that is where most companies will say the CAI gains "so much HP", whereas the short ram in the end will give you the same HP increase, there is no spike, its a constant gain. They had dyno charts of the same car with both intakes on it. It was a really good read.

Also, an easy fix for a Short ram to get cold air is make a heat shield around it. Most likely not as cold as a CAI but cuts down on the heat some. You could probably also run some ducting from where the CAI would sit to direct some more air to the Short Ram.

Tony,
Thanks for the explination. I understand that the CAI and the Short Ram both are less restrictive than the stock intake, so increased power is obvious. So does the short ram provide the constant power because it is shorter?

as long as you take off your stock intake(pos) and put something else on you'll be fine. i buy cheap ass ebay pipe. why? because i'm not gonna pay 200 plus dollars for a cai from aem or more for other companies. them i just buy a good filter. in the end my intakle cost me like 60 bucks. that's only because the damn filter cost so much. and if you are worried about heat from your headers. heat wrap them.

yea, the filter is the biggest thing on the intakes. I don't know the exact technicalities between the 2, but if I remember in the end they both had close to the same gains, but the CAI just had a power spike.

and yea, heat wrap will work too.

great problem solved.

He wasnt really referring to the intake temps here, he meant that by removing the heat shield, you would be allowing more ambient heat to get to your radiator and fans, exposing them to heat and also running your engine temps higher, causing your fans to run longer. Again, just specualations.

He wasnt really referring to the intake temps here, he meant that by removing the heat shield, you would be allowing more ambient heat to get to your radiator and fans, exposing them to heat and also running your engine temps higher, causing your fans to run longer. Again, just specualations.

Yes, exactly what I meant in my original response, somehow we got thrown on intake temps.

meh, who cares... this thread got more interesting... :P

Thanks, I know I hyjacked it, but I think the two kinda went together.

I know this thread got off topic with the intake stuff but just to make a point about those tests comparing the short ram vs. the CAI. It seems pretty obvious that on a dyno the CAI wouldn't really work the way it's meant to (even if you put a fan right in front of the car like most dyno places do). When the car is driven on the street the air gets forced into the filter seemingly faster exponentially as the car accelerates. It may still spike depending on rpm and/or speed. I've noticed at 5500 rpms I'd feel a slight pull and louder sound.

Anyway, the original question has already been answered when explained that an aftermarket header is made with more heat absorbing materials (ceramic coated or stainless) so a heat shield for the manifold isn't necessary.

Yes, Ive touched my ceramic coated header before while running..granted, it burnt the shit outta me, but I didnt really feel it before my hand hit it, not much ambient hot air surrounding them. And no, I wasnt purposely touching it :P

A shorter, fatter intake is better for performance. Now, if you can get cooler air routed to it, you have the best of both worlds. I'd take a shorter, fatter intake tube w/ a velocity stack over a cold air any day. Cold air's are way over-hyped.

holy crap bambam posted. that's a good point. if you could use a bigger pipe on a short ram and the use like a scoop or velocity stack then you would be doing good. the best of both worlds.

A shorter, fatter intake is better for performance. Now, if you can get cooler air routed to it, you have the best of both worlds. I'd take a shorter, fatter intake tube w/ a velocity stack over a cold air any day. Cold air's are way over-hyped.

Fully agree with that, thats why I said get a short ram and run some induction tubes from where the CAI filter would be.

a short ram and induction tubes doesnt sound that bad. ill look into that more tomorrow. im starting to look more down tawards cai.
plus, short ram sounds deeper

holy crap bambam posted. that's a good point. if you could use a bigger pipe on a short ram and the use like a scoop or velocity stack then you would be doing good. the best of both worlds.

Lol...most people don't know I'm in the military. I get on here when I can but generally I spend upto 6 months a year under the ocean in a submarine.

Lol...most people don't know I'm in the military. I get on here when I can but generally I spend upto 6 months a year under the ocean in a submarine.
bambam, we talked on the phone about going obd-1. i'm in the navy too. me and the wife live in cali. damn submariners. leave 'em in the dark for too long, and they forget everything. lol

bambam, we talked on the phone about going obd-1. i'm in the navy too. me and the wife live in cali. damn submariners. leave 'em in the dark for too long, and they forget everything. lol
Ok...yep, I remember now too. I noticed a few other guys on here that were in the Navy too. We should start a squad :P

Ok...yep, I remember now too. I noticed a few other guys on here that were in the Navy too. We should start a squad :P
well i got a b16 powered crx. my friends have a b16 crx then a 95 ex/si then i got a buddy with a c5 powered crx. and two turbo integras. what you got over there?
i feel like i'm playing poker or something.

well i got a b16 powered crx. my friends have a b16 crx then a 95 ex/si then i got a buddy with a c5 powered crx. and two turbo integras. what you got over there?
i feel like i'm playing poker or something.

Not really sure. Most guys in the navy drive either mustangs, evo's or STi's. If not, then they're usually pushing rice burners that they bought from someone else.
I run a crew that's comprised of myself, an H22 EK coupe, GSR EG hatch, K20 EG hatch, an S2000, and a 1.8L B16 CRX. Quality not quantity is what I'm about.

my security buddy warren wants to swap his b16 for a k20.

my security buddy warren wants to swap his b16 for a k20.

tell him to save his money for a 1.8L block, some cams and pistons. I wax the K20 EG from a stop and a roll. He run's a 13.2 w/ 12:1 compression and IPS cams AND slicks, while I run a 12.7 on street tires. Waste of 11k if you ask me.

he's one of those hardcore spoon fanatics. paid 2200 for his spoon rims. and i think he's freakin crazy but to each his own right?