Author Topic: PROJECT "COOL HER DOWN" (Read 33917 times)

crawlerdan · « **on:** Jun 09, 2006, 06:49:47 PM »

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Well im home from school for the weekend, as some of you know i did the con last week....and have driven 2700 miles in the runner in the last two weeks!!

thats alot, it only sees about 1000 miles a year till now.. any way-as some of my marlinite freinds know, i have a high horsepower motor with stainless steel headers ect on it...which is good for power but generates alot of heat!! so now project cool her dowm begins!

plans are to reduce underhood temps by 20%

step one-i bought these vents made for a motorhome and will install them in my hood...yes this means cutting a huge hole in the hood, but all in the name efficiancy

step two-if the vents dont cool as much as i want, i will be installing a puller style fan under them to suck hot air out of the engine bay-i dont want to do this but will if i have to

starting point temp is 213 degrees at 10 minute idle in the driveway

Duffil · « **Reply #1 on:** Jun 09, 2006, 07:32:27 PM »

Don't hold out on us!!

crawlerdan · « **Reply #2 on:** Jun 09, 2006, 07:57:28 PM »

simmerdawna!!! im workin on it

here are pics of the hood as is...and of the vents that will soon live in it

Duffil · « **Reply #3 on:** Jun 09, 2006, 08:02:13 PM »

that vent looks like the one above my oven!!

CTENG in KS · « **Reply #4 on:** Jun 09, 2006, 08:02:24 PM »

Make sure ta louvers open to ta back

crawlerdan · « **Reply #5 on:** Jun 09, 2006, 08:06:27 PM »

Quote from: Duffil on Jun 09, 2006, 08:02:13 PM

that vent looks like the one above my oven!!

it is, i took it while you where at work!!!!! and yes the louvers will face backwards ct..

the vents are made for the "hood" on a monaco deisel pusher motor home-the radiator and fan sit in front of 6 of these guys, i have two...picked um up at monoco in coburg or for 6.19 each

DTB · « **Reply #6 on:** Jun 09, 2006, 08:11:36 PM »

i dunno. i like your ideas dan but I think it looks kind of ghetto to me. No offense but I think u could find something a little more trick. It looks like the vent in my living room for the air system. again, no offense man $Beer Chug\'n$

Duffil · « **Reply #7 on:** Jun 09, 2006, 08:13:55 PM »

Quote from: crawlerdan on Jun 09, 2006, 08:06:27 PM

it is, i took it while you where at work!!!!!

I'm just giving you hell, CD~!!

crawlerdan · « **Reply #8 on:** Jun 09, 2006, 08:28:46 PM »

Quote from: DirToyBoy on Jun 09, 2006, 08:11:36 PM

i dunno. i like your ideas dan but I think it looks kind of ghetto to me. No offense but I think u could find something a little more trick. It looks like the vent in my living room for the air system. again, no offense man $Beer Chug\'n$

im sure it is probably exactly the same as the vent in your living room, and no offence taken thats why i post, to garner opinions, do you have suggestions? i have not cut the holes yet. i do not want a scoop, and i want to keep it as low profile as possible, these are like 3/8th tall...low

crawlerdan · « **Reply #9 on:** Jun 09, 2006, 08:37:16 PM »

heres more pics

RABIDYOTA · « **Reply #10 on:** Jun 09, 2006, 08:58:14 PM »

you said you have headers? have you wraped them? try that B-4 you cut you'r hood

Uncle Jesse · « **Reply #11 on:** Jun 09, 2006, 08:58:49 PM »

How well do you think maybe some heat shields for the headers with ducted air to them would work? Maybe duct ait from the grill area, not from the fan shroud, and send it over the heat shields and down the firewall. I'd hate to see you cut some big wholes in that premium paint you put on your 4runner

Nice 4runner by the way

crawlerdan · « **Reply #12 on:** Jun 09, 2006, 09:03:29 PM »

Quote from: RABIDYOTA on Jun 09, 2006, 08:58:14 PM

you said you have headers? have you wraped them? try that B-4 you cut you'r hood

yes, that didnt help at all, and was really expensive.

and thanks uncle jesse, but the idea im working off of is, hot air rises, and in most cases im driving the truck at 2 or 3 mph, so "ram air" or other ducting wouldnt help

Uncle Jesse · « **Reply #13 on:** Jun 09, 2006, 09:12:44 PM »

You could always do it like those guys with the volkswagen bugs. Put those risers on the hood to space it up an inch or so to let the heat out. Just do yours on the rear of the hood. Something to this effect:

Yeah, I forgot about the lack of ram air. Some heat sheilds would probably still be a good idea though.

BigMike · « **Reply #14 on:** Jun 09, 2006, 09:16:55 PM »

Dan, excellent idea bro

I happening to be wanting the same thing done to my hood as well, I just have not but much thought into yet.

.......So I am VERY interested in your results, and I might have to send you some money in exchange for some of those vents shipped my way (since I have no idea where to buy monoco deisel pusher motor home louvered vent screens

)

crawlerdan · « **Reply #15 on:** Jun 09, 2006, 09:20:02 PM »

Quote from: Uncle Jesse on Jun 09, 2006, 09:12:44 PM

You could always do it like those guys with the volkswagen bugs. Put those risers on the hood to space it up an inch or so to let the heat out. Just do yours on the rear of the hood. Something to this effect:

Yeah, I forgot about the lack of ram air. Some heat sheilds would probably still be a good idea though.

i tried the riser thing, about 1/2 an inch was all i could get before it looke retarded, and it really didnt seem to do a whole lot, maybe a 3-5% change in temp...not enough

BigMike · « **Reply #16 on:** Jun 09, 2006, 09:28:37 PM »

Quote from: crawlerdan on Jun 09, 2006, 09:03:29 PM

yes, that didnt help at all, and was really expensive.

I put header wrap on a 4-1 header on my MR2 and it didnt do anything. Then I got it ceramic coated, and WOAH, WHAT A DIFFERENCE. I believe that Header Wrap works when used futhure downstream on the exhaust system, like right before and the entire length after your cat. There is just too much heat right at the exhaust ports, from my experience wrap didnt do much to cut down the heat there.

All I have done so far to my truck to help with under hood temps is I removed the rubber weather stripping that seals at the Crowl/below the windshield when the hood closes. I hope that the air can now enter the grill and push right straight out through the other end of the hood and then up and over the windshield, or have fresh air be sucked down the firewall from the inside-out, depending on vehicle speed.

Here is a picture of my 4-1 Header from my SC MR2 engine (1.6l 4A-GZE) before I wrapped it. It had some sort of coating before I wrapped it. It wasnt ceramic. And the header wrap didnt do jack. Picture circa October 2001.

Secondly, here is the same header after I got it Ceramic Coated. That coating worked so well you could put your finger half an inch from the pipe and you couldn't even feel the heat. Amazing, definately worth the money. Picture circa November 2002.

Finally, here is a picture of my Downey 4-1 Header on my 3RZ. It came Ceramic Coated, the only way to go

crawlerdan · « **Reply #17 on:** Jun 09, 2006, 09:31:54 PM »

Quote from: BigMike on Jun 09, 2006, 09:28:37 PM

I put header wrap on a 4-1 header on my MR2 and it didnt do anything. Then I got it ceramic coated, and WOAH, WHAT A DIFFERENCE. I believe that Header Wrap works when used futhure downstream on the exhaust system, like right before and the entire length after your cat. There is just too much heat right at the exhaust ports, from my experience wrap didnt do much to cut down the heat there.

All I have done so far to my truck to help with under hood temps is I removed the rubber weather stripping that seals at the Crowl/below the windshield when the hood closes. I hope that the air can now enter the grill and push right straight out through the other end of the hood and then up and over the windshield, or have fresh air be sucked down the firewall from the inside-out, depending on vehicle speed.

Here is a picture of my 4-1 Header from my SC MR2 engine (1.6l 4A-GZE) before I wrapped it. It had some sort of coating before I wrapped it. It wasnt ceramic. And the header wrap didnt do jack.

Secondly, here is the same header after I got it Ceramic Coated. That coating worked so well you could put your finger half an inch from the pipe and you couldn't even feel the heat. Amazing, definately worth the money.

Finally, here is a picture of my Downey 4-1 Header on my 3RZ. It came Ceramic Coated, the only way to go

sexy mike...very sexy

BigMike · « **Reply #18 on:** Jun 09, 2006, 09:34:38 PM »

Man I miss that car soo much..

[thinks back about his past] a sad moment in the Life of Mikey [/thinks back about his past]

$I\'m Down$

crawlerdan · « **Reply #19 on:** Jun 09, 2006, 09:35:48 PM »

i helped build a 10 sec mr2 in high school, wish i coulda kept it..it was running 22 psi...mmmm

toyo487 · « **Reply #20 on:** Jun 10, 2006, 08:41:28 AM »

find a donor hood to cop up if it works then paint it if it doesn't then you still have your nice hood to put back on.

CTENG in KS · « **Reply #21 on:** Jun 10, 2006, 09:15:04 AM »

That is pansy move...JUST CUT IT LIKE A REAL MAN!

crawlerdan · « **Reply #22 on:** Jun 10, 2006, 09:57:28 AM »

Quote from: CTENG in KS on Jun 10, 2006, 09:15:04 AM

That is pansy move...JUST CUT IT LIKE A REAL MAN!

Im with CT on that.... I took the hood off and at 23 mins idling it only got 2 150 degrees. Huge improvement!

CTENG in KS · « **Reply #23 on:** Jun 10, 2006, 09:59:45 AM »

Hmm, maybe I will have to get some gas stove louvers...get ewr done so we can get a runnning temp!

crawlerdan · « **Reply #24 on:** Jun 10, 2006, 12:52:36 PM »

here is some progress pics, i need to go get hardware to attatch vents

DTB · « **Reply #25 on:** Jun 10, 2006, 01:02:29 PM »

Quote from: CTENG in KS on Jun 10, 2006, 09:15:04 AM

That is pansy move...JUST CUT IT LIKE A REAL MAN!

BigMike · « **Reply #26 on:** Jun 10, 2006, 02:05:23 PM »

Looking good Dan

Have you seen these two pages?
http://board.marlincrawler.com/index.php?topic=4368.0

http://andongenuity.com/html/?go=hoodvent

Willy Mammoth · « **Reply #27 on:** Jun 10, 2006, 02:07:03 PM »

Couldn't you find someone to stamp louvers in your hood?

BigMike · « **Reply #28 on:** Jun 10, 2006, 02:08:19 PM »

Is that possible? Point me in the direction. Of course doing it yourself if

Willy Mammoth · « **Reply #29 on:** Jun 10, 2006, 02:26:03 PM »

I did a search and this is all I found. Mike you have a iron worker at the shop, how deep is the throat? You can get dies to cut louvers.

http://www.maneklalexports.com/English/McTools/Nibbling.htm

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