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03-31-2003, 03:09 PM | #1 |
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TMI (Top Mount Intercooler) on a KA-T
Would a top mount intercooler be a bad idea for KAT setup? I know it might sound stupid, but i was just thinking.
Also What are the upsides and down sides to TMI FMI and SMI |
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03-31-2003, 03:15 PM | #2 |
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some basics:
tmic: good: airflow to radiator is great, shorter IC piping, bling factor bad: custom setup $$, intercooler sizing might be problem, depending on setup famous TMIC: Koguchi's D1 car fmic: good: airflow direct to intercooler (no rerouting necessary), cheapest aftermarket setup. can use large intercooler bad: radiator loses some of that airflow smic: good: good for everything but the size of intercooler bad: size/possible routing of air |
03-31-2003, 03:18 PM | #3 | |
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It wont be to bad, cuz i get this custom **** for cheap, real cheap, and im hopfully going to be running a 200HP RWHP is my goal, i dont need any more than that. So what kind would be good? Any special brand
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03-31-2003, 03:52 PM | #4 |
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d00d, I thought you were going to be original and build a N/A monster (with the pistons and compression)
You have a s13 so FMIC block all of the airflow that was supposed to go the radiator. I used to run one 12" electric fan on my radiator when I had the SMIC now I have two 12" on with the FMIC and still run a little hot. Top mount seems really cool just go with a Spearco core and endtanks and get your "cheap" piping and you will be set. Just don't forget to get a new hood to get air to that badboy
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03-31-2003, 04:01 PM | #5 | |
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and nrcooled, is their anyway i could go with like a stock WRX one right away, and then just bolt on a Spearco core and endtanks later in life, cuz now im going for a cheap set up, that runs decent, i dont really have money for an expensive IC on a 800$ setup |
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03-31-2003, 05:25 PM | #6 |
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Heat rises, that's all I'm sayin.
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03-31-2003, 05:55 PM | #7 |
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The WRX TMIC will only really fit on a Subaru... the outlet is in the center of one of the long sides... No way to mate that up to a KA.
For 200hp at the wheels, a sidemount would be fine... that's not much airflow. I see SR sidemount ICs go for not much cash. Since you have an '89-'90 you'll need to cut the front bumper or get a '91-'93 bumper or aftermarket for it to work though. |
03-31-2003, 09:37 PM | #9 |
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Yes, heat rises, but a little breeze has much more force than rising hot air. Proximity to the heat source is a bigger issue here, but when you're rolling down the street there should be enoug
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03-31-2003, 10:12 PM | #10 |
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It is not a Subaru setup. It is this kind of concept. Not SCOOP needed, just a vented hood to get the air out. Air goes in front air dam, up through TMIC, and then out the vent. the low pressure outside the vent swill cause the air to get sucked up through the IC and hood.
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04-01-2003, 02:36 AM | #11 |
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FMIC's look cooler. If you're going for sleeper look, get the TMIC. I still think you should go for the front mount IMO.
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04-01-2003, 04:23 AM | #12 |
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you cost effectiveness will be lost for the simple fact of having to buy a hood that will give you the airflow you need. I say buy a SMIC from a SR guy and get piping to run to it.
SMIC worked fine for me at 205hp on my SR @ 10lbs then I started running 14lbs during the winter ::no problems meng::
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04-01-2003, 07:04 AM | #13 |
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Corky's Rule: Beware the interheater.
(Top-mount intercooler = interheater often...where ic temp is higher than compressed air temp...and ic heats air rather than cooling). Don't do it. Heat is a killer. |
04-01-2003, 07:49 AM | #14 |
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I like that thing that Dorifto180sx posted, but that IC is so muc $ i bet, see im going for stock IC, not aftermarket. How bout somthing like this
I know this is a TT set up, but this idea. |
04-01-2003, 08:10 AM | #15 |
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You'll find that once you start getting knee deep in a tmic project, your gonna be spending way more than you expected.
Here are some points I was thinking about while reading this. Can't use the clutch fan anymore. Your gonna have a heck of a time securing it. Your also going to have to make ducts to route the air from the bumper to the ic. in order to proper cool, your gonna have to get a pretty big core. I suspect temps can get pretty hot in there and a smaller core would heatsoak a lot easier in a hot engine bay. lol, better hope none of your belts snap Your best bet in my opinion for an el cheapo turbo kit is to grab yourself and starion/NPR front mount. You can find em on ebay sometimes or junkyards. Than custom fab piping and you'll be good to go. |
04-01-2003, 08:15 AM | #16 | |
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04-01-2003, 08:19 AM | #17 | |
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I would recomend a sidemount. Why did this idea come about Oni?? Are you trying to build a sleeper or just be different? If you want to be different, you allready are on the right track. I don't know anyone in MN with a KA-T, and if someone here has one, it is rare. Don't worry about a TMIC if that is your biggest concern. Just get it running without any strings attached. If it is for a sleeper, then the SMIC will work just fine. Just don't cut holes in your hood, if I see you running around this summer with holes in your hood, I will have to make fun of you.
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04-01-2003, 08:23 AM | #18 |
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For all of you debating the heat issue, how is it that the turbo SE-Rs(the old boxy ones) have top mount intercoolers and still run cool??? I have wondered this for a while. My friend Truc has one with the SR in it and he has a TMIC with no hood vents. It runs fine.
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Anyone from the Twin Cities? http://www.heiruspecs.com/ [email protected] 89 coupe Red top SR Blown Stereo.... Last edited by christopher; 04-01-2003 at 08:25 AM.. |
04-01-2003, 09:44 AM | #19 |
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TMIC are NOT cheap!!! Sleeper? Get pulled over and the cop sees a TMIC in your engine bay (Hood vent, or hood pop) you will be up a certain creek without a paddle. No way to hide it there.
Ducting? Umm sheetmetal is not hard or expensive... I would probably run ducting AND an electric fan to be safe though. (unless it is track only car like Koguchi's green one shown above). Umm... TMIC is best when used for track with a slanted radiator and all that jazz... It would be cool for the street if you don't care about getting caught with an SR or KAT and you are proficient in custom making things. |
04-01-2003, 09:50 AM | #20 | |
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Next time you are w/ you friend grab his cold pipe after some hard runs then grab the cold of a FMIC. On a hot day the cold pipe will genuinely be cold and I guarantee that the TMIC on a nonvented hood will be warm or hot to the touch. With my SMIC the cold pipe was always warm to hot then I got the FMIC it's allways been cold
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04-01-2003, 09:53 AM | #21 | |
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04-01-2003, 10:09 AM | #22 | |
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Didn't people already tell him to go electric fans? Can't find shrouds outside cali? Does he have a telephone? Unstable-hybrids, Heavy throttle... call them up and ask. Hunt the classifieds, pay for shipping a piece of PLASTIC that weighs 4 pounds... I think that is an excuse to be lazy. But hey, I don't have a shroud for my project yet, so the 1 less shroud used could potentially be mine. I have no problem with people going electric, since I am in the "same" boat... only i know what i want to do, I'm not on the fence. |
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04-01-2003, 10:14 AM | #23 |
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I knew who you were talking about and no I am not doubting your or any of your friends knowledge. Like I said I was just giving the man options.
Just a question: Do you have a s13 and do your electric fans work well for you in Cali. I just put the FMIC on and just waiting for summer and getting kind of worried. It works now but it is still pretty cool out
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04-01-2003, 10:23 AM | #25 | |
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04-01-2003, 10:25 AM | #26 |
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i should have looked. i was there most of saturday hahaha..ok, i will find out. have a few others i can check on too for youif no luck there. werd dawg. werd.
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04-01-2003, 11:59 PM | #27 |
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Dude, I bet it would look pretty pimp if you set it up like the pic but placed it REAL close to the hood and just cut a rectangle out of your stock hood so it exposed all the fins and stuff.... I dont know.... maybe not. Im tired..... |
04-02-2003, 12:19 AM | #28 |
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Why is there so much debate going on here? There is no hood clearance for a TMIC.. as my damn turbo is already rubbing on the heat-shielding on my hood. Also, TMICs are not efficient at all. It WILL get heat-soaked from the turbo on a KA-T (unless you mount it bottom-mount somehow), and even then, the piping before the IC will be superheated from the heat rising. We're not talking puny 200* engine heat... more like 1000* radiant heat.
It's also more expensive to do a TMIC setup, both in piping and the new hood / scoop that you'll need to install. So.. ditch the plans on the TMIC, get an FMIC since it's the most efficient IC that isn't watercooled, and go to town. -Jeff
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04-02-2003, 12:53 AM | #29 | |
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Think: little spoiler thing that goes along rear edge of hood. When it is popped up, the deflector deflects air up to the middle of the windshield and it then gets carried over the roof of the car to the rear. This allows the hot gas/air from the turbo and manifold and valvecover to exit between the hood bottom and the windshield. Without the deflector, the outside air would get pushed down into the engine bay and carry the hot air towards the nose. That woud not be a horrible thing if you have a vented hood (check), but since the vents are being used for the TMIC and radiator ducting job, they are not open for that hot air now. Enter the deflector (koguchi invention) porblem solved for him. Now that I think about it, Koguchi's front air dam is split in the middle, and I think his radiator may be angled opposite his IC. The IC's air comes directly from outside, gets ducted ONLY through the TMIC, and then out the vents. The lower deflected air gets drawn through the radiator (possible fan usage) and towards the bottom of the car (ground) and exists underneath the car. In an amatuerly set up TMIC I can see it being counter productive, but NOT in this case. No radiator blockage, no heatsinking, added cooling (air exiting under hood and up/over windshield) and so on.... Best set up I have seen on an S-chassis (no JGTC). It reminds me of an FD3S setup that is very popular b/c of all the room they have in front of their engines. |
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04-02-2003, 01:32 AM | #30 |
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Great. Some super drift guy (stupid assumption) in JDM land did it, so even though it's super expensive, and requires a lot of thought, components other than pipes and intercooler, and even a frickin invention, it's "the way to go".
Lets get a grip on reality here. This guy is doing a budget KA-T project, WHICH EVERY SINGLE PICTURE ON THIS THREAD IS OF AN SR!, and probably won't have the resources to make a TMIC. Come on! TMICs are mainly required for rally racing so that rocks and crap don't damage the intercooler, and they all have tons of ducts. I'd imagine that drift people use TMICs for the anti road crap, and to safely bash their front ends up and not buy a new IC. If you want to debate the merits of TMIC v. FMIC, go for it, in another thread. Also, if you want to help a guy with a KA, don't show pics of SR motors. Can we keep stuff on topic? -Jeff
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