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Where to mount intercooler on N/A?

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Old Oct 3, 2001 | 11:55 AM
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Question Where to mount intercooler on N/A?

OK, so it sounds like a stupid question, but where should I put a FMIC on my NA FC? In front of the rad? Behind the rad?

Basically, I'm starting a turbo conversion as soon as I can find a beater to drive while the Rex is in pieces, and want to get a jump on the project....
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Old Oct 3, 2001 | 01:35 PM
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i was thinking about using a 300zx tt intercooler in the space below the battery, where the brake vent is or get that isuzu intercooler and mount it near the oilcooler it isnt that big

I'll try to post some pics that i got at nopi of a fc with the isuzu intercooler.
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Old Oct 3, 2001 | 01:43 PM
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I have a stock TII intercooler that I have started converting to front mount. I removed the back plate, and will get the 90 degree outlet relocated once I decide where to mount it. Right now I'm thinking behind the rad, to simplify the piping...
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Old Oct 3, 2001 | 02:35 PM
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First off, don't put it behind the radiator. That defeats the purpose of having an intercooler...to cool the air down. Mount it in the front and if I were you, I'd use a Starion/Conquest intercooler or something a bit bigger than a TII intercooler.
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Old Oct 3, 2001 | 02:38 PM
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300zx tt intercoolers are tiny. are you going to use bothe of em?
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Old Oct 3, 2001 | 03:14 PM
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The intecooler in the FD is located behind the rad, so it can't be that bad a location. Even the air coming from the rear of the rad is significantly cooler than that coming from the turbo....

All I really need is the TII intercooler, since I am not planning on running crazy boost on a 6 port engine...
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Old Oct 3, 2001 | 03:28 PM
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The FDs radiator is also very low and almost horizontal. So a stock FD IC doesn't really sit behind the radiator. I'd say in front of the rad is the best place to mount it.
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Old Oct 3, 2001 | 05:19 PM
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FD IC is above the rad, not behind it. it gets it's own air
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Old Oct 3, 2001 | 09:10 PM
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OK. Then I guess it'll go in front. I'll probably have to move the battery then....

Thanks!

(Oh, I'm sure I'll have more questions down the road...).
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Old Oct 3, 2001 | 09:37 PM
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Hey Aaron, just out of curiosity, are you going to wire open your 6 ports or leave them as is. If you are leaving it as is, how are you going to handle the increase in boost when the 5th and 6th ports open?

Thanks
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Old Oct 3, 2001 | 10:15 PM
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Was your engine rebuilt? or does it acually have 200k+ miles on it?

How much do you think the Turbo conversion will cost ya overall ?
I would love to do this on my 86 Base =)
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Old Oct 3, 2001 | 10:58 PM
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Originally posted by RX-7 GT
300zx tt intercoolers are tiny. are you going to use bothe of em?

No just one, or maybe a FD intercooler, but I am planning on doing the same thing Aaron is, adding a turbo kit to an NA so I dont need mad boost
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Old Oct 3, 2001 | 11:15 PM
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Originally posted by ZachSpazz
First off, don't put it behind the radiator. That defeats the purpose of having an intercooler...to cool the air down. Mount it in the front and if I were you, I'd use a Starion/Conquest intercooler or something a bit bigger than a TII intercooler.
I agree. I'm not sure if putting the small stock unit up front will be worth the pressure drop caused by all that plumbing. I guess you could try it, but a Starion/Conquest unit would be better, and only costs about $40 at the salvage yard.

I realize that you may not care much about increasing your detonation threashold (although maybe you should if you are using the NA rotors), but a larger IC will generally be more efficient and have less of a pressure drop. Yes, I know, not all IC's are made the same, but a friend of mine has a Starion IC on his TII, and you don't need a dyno to tell that it is better.
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Old Oct 4, 2001 | 08:55 AM
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Cost for the project is probably going to be between $1500 and $2000 (Canadian). I already have my turbo and intercooler which I bought for $530....Now I need some piping, an adapter to connect the turbo manifold to the 6 port engine, a BOV, TII injectors, fuel pressure regulator, some misc nuts/bolts/fittings and probably a few gaskets and stuff (boost guage, etc.). In theory, it's a weekend project, but it'll probably take me the whole winter because EVERYTHING ALWAYS GOES WRONG.

Oh, and I need an exhaust shop to modify my Bonez cat to fit the turbo.

The engine is not rebuilt, it really has 240,000KM on it. Still makes excellant compression, always starts, never floods, and doesn't smoke. It's in good shape.
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Old Oct 4, 2001 | 04:22 PM
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Damn... How'd you get your plan for only $1500 can?? I plan on my conversion to cost me $2500-$300 US. Though I plan on getting new 550cc/min and 720cc/min fuel injectors. A new spearco front mount intercooler, stock tII manifold and turbo, costom extension (2 flanges and 2 pipes welded together). The hardest part about this conversion is probably gonna be running the oil and cooling lines to and from the turbo. Well, that and the front mount plumbing.. I'm also considering mounting the intercooler above and behind the radiator. Which would make installation much easier. We'll see this summer. I hope to have it running by June.
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Old Oct 5, 2001 | 12:34 AM
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Aaaron,

Are you upgrading to the T2 ECU? If not what are you doing about your timing? If I understand correctly you should have 1 degree of retard for every lb of boost. Simply adding fuel is not the solution. Are you using a T2 turbo?
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Old Oct 5, 2001 | 12:35 PM
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From the pricing I've seen, $1500-$2000 seems like a reasonable estimate.

As far as timing goes, I have a Crane ignition box that is able to retard under boost if you add the sensor...
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Old Oct 5, 2001 | 07:29 PM
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Not to bust on ya...
..but I'm doing an actual GTR TII swap...and now that I've done most my researching and I have already began to buy the parts and take out my NA motor...I've realized that it would be really difficult to convert the NA to a turbo and still keep a strand of reliability...
...BTW, you may want to invest in the T2 tranny..the NA ones are only really good for up to 230HP...just a suggestion...but best of luck to ya...and I know what you mean by the whole winter thing..i'm hoping to have mine done by november...we'll see....
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Old Oct 9, 2001 | 03:07 PM
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I don't want to do the TII engine swap. Why? Well, because first and foremost I like to experiment. I want to find out exactly how the 6 port will behave with forced induction. Also, others have done it before me. There have been both superchargers turbochargers installed on NAs with good success. As long as the engine is in good shape and you don't run crazy boost, you'll be fine. I also want to do something that most people say can't be done.

Also, TII parts are a little hard to find around here. Getting the engine would be easy, but then getting the required wiring harnesses and misc other parts (AFM, boost sensor, etc..) would quickly inflate the price.

Besides, if I blow my NA engine I can always rebuild with TII rotors for the lower compression ratio to make it more turbo friendly. As I recall, there is a guy somewhere around here running that exact configuration (with a Haltech) on a GTU. He's dynod at 396 HP. A lot more than I'm going for though..
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Old Aug 25, 2005 | 04:44 PM
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see what i mean, we all asked questions about something at some point...

someone couldve easily told you to search instead of actually helping.


im no exception, i still ask questions about things i dont know, i think i asked a question like 2 weeks ago.
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Old Aug 25, 2005 | 05:04 PM
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I'd say right infront of the rad would provide the best idle air flow as the fan would be pulling the air there harder than at the front bumper.
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Old Aug 25, 2005 | 05:17 PM
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lol, this thread is 4 years old, im just making a point 1987
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Old Aug 25, 2005 | 05:22 PM
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I'm aware of it.
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Old Aug 25, 2005 | 05:23 PM
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Old Aug 25, 2005 | 05:27 PM
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for the sake of being nice... edited

Last edited by Agent_D; Aug 25, 2005 at 05:43 PM.
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