TMIC vs. FMIC, stock turbo and where does the heat go?
05-09-12, 06:43 PM
#26
For all the people saying they're having cooling issues once they went FMIC, do it right!
Ducting is 80% and then placement of the IC. I put foam in the corners around my radiator.
I sandwiched my Isuzu NPR up against my Koyo radiator. I have maybe 3-4 feet of piping at most. It was 1 U bend pipe cut up and a straight piece.
I run a Taurus Efan on my car and run at 180 driving around town on low speed. Once it starts hitting 100-110 out here, I'll switch it over to high speed. I've done full throttle 20 minute track sessions without overheating.
Thread to install when i was still clutch fan.
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/installing-isuzu-npr-fmic-782097/
Ducting is 80% and then placement of the IC. I put foam in the corners around my radiator.
I sandwiched my Isuzu NPR up against my Koyo radiator. I have maybe 3-4 feet of piping at most. It was 1 U bend pipe cut up and a straight piece.
I run a Taurus Efan on my car and run at 180 driving around town on low speed. Once it starts hitting 100-110 out here, I'll switch it over to high speed. I've done full throttle 20 minute track sessions without overheating.
Thread to install when i was still clutch fan.
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/installing-isuzu-npr-fmic-782097/
05-09-12, 08:18 PM
#27
digi7ech hit the nail on the head.. factory ducting SUCKS. i was running tmic, and after about 10 min of track driving it would start to overheat. i later found out most of the air was getting around the radiator at the bottom.. the undertray does not seal against the radiator very well at all. i trimmed the undertray, so that it ended at the bottom of the radiator. i ziptied the undertray to the radiator, and all cooling problems disappeared. i believe if you had an IC in front it would not make much of a difference, since the IC is not really making that much heat. as long as you have good ducting, and the air has no place to go but through the radiator, you will have no problems
05-09-12, 08:44 PM
#28
So, while this great thread exists and is active, I'd like to get some feedback.
I have a stock S5 TII that I am prepping for autocross. The class it is running in allows any intercooler setup, so long as I don't cut into anything. I'll be removing AC, but I need to keep power steering, the stock turbo, and cannot touch the wastegate.
Would it be worth it to go FMIC, or would I be better off soaking the stock TMIC in water between runs?
I have a stock S5 TII that I am prepping for autocross. The class it is running in allows any intercooler setup, so long as I don't cut into anything. I'll be removing AC, but I need to keep power steering, the stock turbo, and cannot touch the wastegate.
Would it be worth it to go FMIC, or would I be better off soaking the stock TMIC in water between runs?
05-10-12, 12:37 AM
#33
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-Damn, 2300 for a V-mount kit? And it still diverts done air down under the car.
-Here is another potential idea. Say one hand lays a carbon/kevlar hood and uses hood pins to secure it. No need for the hood latch, so it's removed. And hypothetically, if one could find a suitably shaped unit, relocate the radiator overflow reservoir to the empty space formerly occupied by the air box. This leaves a small amount of space between the tops of the radiator and bumper supports. Trim the top of the radiator support, reinforce with a span of square tube, and theoretically one would have the room to horizontally mount a small intercooler, one that would be just right for the stock turbo. Then all that would be needed would be a splitter to divide incoming air between the intercooler and the radiator. This would, in theory, give the radiator+condenser and the intercooler their own airflow. The intercooler exhaust flows over to top of the radiator, the hot side of it, and joins the radiator exhaust and leaves through the vent in the hood.
-Of course it is unlikely that one could find a suitably shaped reservoir to put in the airbox's location.
-And then there's is the cream of cockamamie absurdity: Stick the radiator behind the driver and passenger, and cool it via roof/side scoops like the DSG 240RS.
-Here is another potential idea. Say one hand lays a carbon/kevlar hood and uses hood pins to secure it. No need for the hood latch, so it's removed. And hypothetically, if one could find a suitably shaped unit, relocate the radiator overflow reservoir to the empty space formerly occupied by the air box. This leaves a small amount of space between the tops of the radiator and bumper supports. Trim the top of the radiator support, reinforce with a span of square tube, and theoretically one would have the room to horizontally mount a small intercooler, one that would be just right for the stock turbo. Then all that would be needed would be a splitter to divide incoming air between the intercooler and the radiator. This would, in theory, give the radiator+condenser and the intercooler their own airflow. The intercooler exhaust flows over to top of the radiator, the hot side of it, and joins the radiator exhaust and leaves through the vent in the hood.
-Of course it is unlikely that one could find a suitably shaped reservoir to put in the airbox's location.
-And then there's is the cream of cockamamie absurdity: Stick the radiator behind the driver and passenger, and cool it via roof/side scoops like the DSG 240RS.
05-10-12, 01:08 AM
#35
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I never asked where to find such a reservoir. I'm just thinking out loud. I know my ideas can be silly, but it's not like I'm declaring intent to DINK my RX-7, or 'stance' it with 30 degrees of negative camber, or stuff a 2JZ under the hood to build a dyno queen.
05-10-12, 01:39 AM
#36
I never asked where to find such a reservoir. I'm just thinking out loud. I know my ideas can be silly, but it's not like I'm declaring intent to DINK my RX-7, or 'stance' it with 30 degrees of negative camber, or stuff a 2JZ under the hood to build a dyno queen.While you are not declaring malicious intent, the type of foolhardy blabbering espoused in this thread serves to do little more than waste bandwith and and potentially get you flamed. It would be best if you posted in the lounge as to not waste the time of contributing members of the forum.
overandout.
05-10-12, 03:16 PM
#38
Finding a reservoir is cake. After reading almost two pages of this, I've already forgotten what his original intentions were. Something about too much piping for an FMIC, I think.
And I have no idea why a non track car needs to have much in common with a Chaparral 2J.
To the OP, have fun. Maybe take some time to really understand what you want to use your FC for and what mods/projects best suit that goal.
08-11-12, 04:01 PM
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-Damn, 2300 for a V-mount kit? And it still diverts done air down under the car.
-Here is another potential idea. Say one hand lays a carbon/kevlar hood and uses hood pins to secure it. No need for the hood latch, so it's removed. And hypothetically, if one could find a suitably shaped unit, relocate the radiator overflow reservoir to the empty space formerly occupied by the air box. This leaves a small amount of space between the tops of the radiator and bumper supports. Trim the top of the radiator support, reinforce with a span of square tube, and theoretically one would have the room to horizontally mount a small intercooler, one that would be just right for the stock turbo. Then all that would be needed would be a splitter to divide incoming air between the intercooler and the radiator. This would, in theory, give the radiator+condenser and the intercooler their own airflow. The intercooler exhaust flows over to top of the radiator, the hot side of it, and joins the radiator exhaust and leaves through the vent in the hood.
-Of course it is unlikely that one could find a suitably shaped reservoir to put in the airbox's location.
-And then there's is the cream of cockamamie absurdity: Stick the radiator behind the driver and passenger, and cool it via roof/side scoops like the DSG 240RS.
-Here is another potential idea. Say one hand lays a carbon/kevlar hood and uses hood pins to secure it. No need for the hood latch, so it's removed. And hypothetically, if one could find a suitably shaped unit, relocate the radiator overflow reservoir to the empty space formerly occupied by the air box. This leaves a small amount of space between the tops of the radiator and bumper supports. Trim the top of the radiator support, reinforce with a span of square tube, and theoretically one would have the room to horizontally mount a small intercooler, one that would be just right for the stock turbo. Then all that would be needed would be a splitter to divide incoming air between the intercooler and the radiator. This would, in theory, give the radiator+condenser and the intercooler their own airflow. The intercooler exhaust flows over to top of the radiator, the hot side of it, and joins the radiator exhaust and leaves through the vent in the hood.
-Of course it is unlikely that one could find a suitably shaped reservoir to put in the airbox's location.
-And then there's is the cream of cockamamie absurdity: Stick the radiator behind the driver and passenger, and cool it via roof/side scoops like the DSG 240RS.
the japanese like to do a 1.5 intercooler, they take the stock IC plus half of a second one and weld it together, and run that. even with hybrid turbos. nothing wrong with thinking out of the box, but simple is really tough to beat.
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immanuel__7
2nd Generation Specific (1986-1992)
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09-05-15 10:23 AM
