I don't think I twisted anything; You were wrong in those threads and to your credit, you admitted that. Anyone can do a search and read the threads for themselves. Only "hard time" that I have around here is battling insults, with facts. Or trying to, at least. This may not apply to you, or it may...but that is the only "hard time" that I have here. Using those other threads to make a point was probably a lot harsher sounding than it needed to be. The point was, and probably the way that I should have said this, was: just b/c some guy on a forum said something, that certainly isn't proof that it is so. BTG tried to take your comment and use that to "slam dunk" his weak, fact voided case.

FYI, I wouldn't expect anyone to take a comment that I had made, and use it to attempt to "slam dunk" a case they were trying to prove, either; I'd hope they'd fact find and post based on that, instead.

Others are right; this thread is hopelessly mired in BS -and I contributed to that too, unfortunately. It's a fall-out for seek fact, I guess. I'll post my results, as I've said. In the end, it doesn't matter what the reality is (hot, cold, or "tepid" air), to the OP b/c most C4 "CAI"s are drawing the same air, from the same location as the stock one...so as I originally posted, they're a waste of money. OP could make more hp/$ else where.

 

in your own words explain how air gets from behind the radiator to the front of the air box

I've heard of pretzel logic, now show me pretzel physics Go ahead make me a Diagram

question for ya

could you draw me a second diagram that shows said flow at hwy speed

 

Like me, someone is curious/interested in some data. I have noticed varying reports in IAT's over the years too. I've wondered what the diff is, between early and late cars, up front. BTG has tried to poke (yet more) fun of me b/c "I have looked at mine a million times" and seen no opening for air...then he posts a pic of his car (I'm guessing?) that shows what looks like a hole to the ground/under bumper area. The implication is that I must be and idiot or blind, right?

See attachment.


...then tell me where the hole is for air? There isn't one.



Obviously, this car has an opening. It isn't discriminatory, but at least there is an opening which my car does not have. Is this why people report different IAT readings? Seems pretty likely. Is the pic of the car that BTG posted, stock? IDK, maybe he does. Would I still call that a "CAI"? No, *I* wouldn't. Not w/o piping that isolates the incoming air, from under hood air.

 

Wouldn't that be crazy if all someone had to do was deform the plastic "cowl panel ?" (I don't know what to call it) or cut a hole in it and you could lower intake air temp by 30 degrees or so ? Maybe that's where this thread is going ...

 

I thought everyone had accepted that as truth already. Frankly it sounds like the earlier cars might have an advantage (as it relates to intake air temp) that the newer cars don't. Not that its going to make a huge difference. Tom might be able to incorporate that idea into his testing. It might be to much hassle and I wouldn't go cutting any holes but it might be easy.

 

First, I think it's a stretch to say that the cars have "absolutely nothing in common" They have quite a lot in common and share many, many of the same exact part numbers.

Second, you're right; the '92 appears to be irrelevant w/regard to the 89. Appears to be. We still don't know who's car is in the pics that you posted, or if that car is stock. Kind of like how we didn't know the back story on that air flow image. Is that car stock?

3rd and more importantly, who is claiming that the '89 intake and '92 intake are the same? I probably implied that with my first post to you about (all) C4's having a hot air intake, but we have moved way, way past that, a long time ago, to a state of exploration/fact finding. Even you, with all your C4 knowledge, must have learned something here. Earlier, you made a similar blanket claim to mine, that "all C4 breath through a hole in the bottom"...the hole Tom couldn't see after looking "a million times"....remember that? I posted a pic of mine; no hole. Exploration is happening, and so is learning. I'm interested to see that hole in the pic you posted. Would like to know more about that particular car, though. I don't recall ever seeing a hole like that on any '80's 'Vette, in person or on the 'net.

I'll pull my filter housing and look at 'bending' that rad shroud down. You're right that I don't want to chop it up for the purpose of this thread, but I'll give it a look and see if there are any easy/obvious solutions.

 

Ok went out and took some pics.


My 1987 Convertible does NOT have an opening to the ground like my 86 did. Its very sealed off actually and would draw hot air mostly if I had a normal hood.

 

Lucky for me I don't have a normal stock hood. I actually have a true cold air induction system built into my hood it seems.

 

Air is sucked into the hood at based of the windshield and travels down the two pillars formed into the hood. It comes out at the two holes at the base of the hood at the front right on top of the airfilter housing. The filter housing has slits in it that draws in the air from the hood.

I used the air compressor spray nozzle to confirm it actually travels thru it.

 

This shows how the airflow does with a cowl induction hood like I have.

 

^Neat!^ That is a really interesting design....I dig it. Do the outlet holes seal to the air filter assy? Or is it just really close when closed? It look from the vid, as if there is quite a lot of air volume moving into the system.

It's interesting that the '87 would be closed off entirely -as I've always thought...but then odd that the '89 would have a fairly decent sized hole in the bottom...but then a year later, closed off again (90-96 are the same part number)? Hmmm. I wonder if we'll get more details about that car with the hole?

 

The video I found on youtube The pics above it are of my hood.

The 89 pics look like a mod we would do in the old days to open up the breather. There should be some pics, info and howtos on the site here somewhere.

My 86 was open though. Heck it was bad about freezing over on moist cold mornings.

But my 87 is definitely cut off from the front end for the most part.

The hood design on my toledo pro hood forms a pocket over the air filter and the two holes blast air onto the cover. Im going to rig up some temp probes and test it while moving. I figure 3 probes would do it. One at the filter lid cover, one in the middle of the engine compartment and one at the base of the hood. That should show how well it works or not at least. Wont help anyone else but Im curious now

 

With the cowl seal intact most of the radiator air is going out under the car. An unsealed cowl will be fine if you're not interested in down force.

 

Good lord man! Ever hear of soap and water?!?

 

That's one trip up the driveway. The fan layout acts like a dust/mud blower.

 

Ahh, the trade-offs of living in the country. Like you crowz, I deal with a long and dusty driveway also. No need in actually trying to clean under the hood. One 5 mph run down my driveway and the engine is covered in dust.

Like others here, now I'm really curious about air intake temps.

 

Im always self-conscious posting pics on her since I know everyone else keeps their cars spotless but where I live that's impossible. I try the best I can

 

This might help explain it some. This is the time my lifted f250 got stuck in my driveway.

Ive repaired the driveway as best I could since this but you can see what Im up against.

 

Yeah, same here. I keep the outside clean, but under the hood is simply impossible unless I just don't drive it, and why have it if I'm not going to drive it.

My driveway isn't as bad as yours (except during the winter), but my driveway is the red line in this pic-

 

Bit longer view of the problems