1FooknTiteFD

I'm getting rid of my m2 medium and jumping ship to a front mount IC, I am looking at greddy or apex, which one is betteR? I will be road racing my rx7 and possibly going single turbo in the future, which one do you guys have experience with? Will i have to relocate my battery or miniuturize the greddy one? I know it's required from the apex

JoeD

Apex...here is why:

1. looks the coolest both under the hood and from outside.
2. comes with intakes.
3. delta-fin design.

performance wise, there should be no difference.

7-sins

I would say the Apexi as well. The whole kit (intake/piping/IC) looks sweet.

SleepR1

I was looking at this IC on Rx7.Com's website. They have it available for $1650 which includes the intake. Rotary Performace is located in Garland Tx (very hot weather climate!).

Have any road racers had good luck with this FMIC? I've read the delta fin design allows more air to pass through the IC, and as a side-benifit, allows more cooling air to the radiator? What other aspects of the delta fin design make this superior to other designs?

Will my Koyo radiator fit with this IC?

Will the A/C condenser fit on the radiator with this IC?

Anyone with road racing experience, chime in (Victor??)

GoRacer

iTrader: (2)

The drawback on the delta fin being it will accumulate little pebbles and bigger debris will dent the fins.

Jason

iTrader: (5)

I prefer the Greddy over the Apex.
Its half the price of the apex
Dont like the blue pipes with the Apex kit
A/C is useless with the Apex unless you do modifications.
Greddy looks better.

Jason
www.rx7store.net

SleepR1

Is the A/C better with the Greddy?

tk5dan

Why you getting rid of the M2? I thought they were great SMIC's

SleepR1

Why not install steel mesh screen in the FD's mouth opening? I've seen this done on race cars. There's a screen for the oil coolers too...

the_glass_man

iTrader: (2)

If you road race, you don't want a FMIC.

DK

iTrader: (5)

It's funny when people say that ... like the air you're cutting through would make a u-turn and go back in the opposite direction with other intercoolers. I'd be interested to see an actual wind test diagram of different designs and see if there really is a difference. Because the path of least resistance would be around an intercooler (if that path is afforded by the setup), there will be an essential vacuum coming from the intercooler. If the delta fin holds true, this local vacuum would theoretically be less than in the other designs. That being the case, I wonder if the local vacuum would balance out the apparent "lack" of airflow efficiency in the other non-delta fin designed intercoolers. If you have all other airflow paths around the intercooler blocked, the air entering your air dam either has the choice to go through or turn around, come out of the air dam, and then go around the car. This is all, of course, implying that the actual flowthrough area of the intercooler designs are equal.

In other words, my head is telling me that delta fin theory is a crock.

jimlab

There wouldn't be, to someone who based their recommendation primarily on appearance...

Perhaps you could tell everyone what the pressure drop across the core is, and how it compares to the other models that are available. You do know what pressure drop is, don't you? What about fitment issues? Any idea what the surface area of the core is and how much of it is exposed when mounted behind a stock front bumper? How about any effects on coolant temperature and A/C efficiency from blocking airflow to the radiator and condenser? No? It just looks cool? Great.

Does anyone else find it mildly ironic that the first person to reply is someone who has never owned an FD or an intercooler in his life?

rotaryheavenrx7

Can i have one of those membership cards jim?

jimlab

Sorry, fresh out.

Chronos

hehehe, nice post Jim

anyways, a fmic as stated above is not a good idea for road racing...Fookntite, if you feel your M2 IC isn't sufficiant take a look at this set up I posted in a similiar thread not too long ago: https://www.rx7club.com/forum/showth...hreadid=132608

that IC aside from channeling heat out of the engine bay and radiator, which is extremely important, also flows much better at 935cfm than even the M2 large at 750cfm...I would immagine it might even flow better than some fmic's.

SleepR1

Hmmm...thanks for confirming my suspicion regarding FMICs and road racing

fd3st04

how come all the japanse race cars has a fmic?

SleepR1

Well according to Chuck Huang of Rotary Extreme, the Japanese race cars, at least the ROAD RACING cars use V-mount IC/Radiator setups...

https://www.rx7club.com/forum/showth...94#post1267094

fd3st04

anybody who watch japanese option video will see all of the cars in the video are using fmic.

RecKleSs

Most of the RX-7s in my Option and RX-7 videos use front mount ic.

Anyway, I'm using the GReddy 3 row front mount ic and I love it. My A/C works pretty well and I relocated my battery to the back for better weight distribution and to cut down on weight. I'm also using the Fluidyne radiator and there was no problems installing the radiator. With the 3 row you have to hack the bumper so it can fit. Dave from KD Rotary said that this ic is great and is better than the A'pexi ic.

SleepR1

reckless, do you road race, ie, do you instruct at driver's schools or lapping days on a regular basis at tracks like VIR, Mid Ohio, Laguna, Gingerman, Road America?

This is the kind of driving I do with my FD...approximately 9% of the mileage on my car comes from track driving. I have 102,250 miles on my car, so you can do the arithmetic

I'm reading conflicting views on FMICs. Some say it's ok for road racing, some say no way should I use FMIC for road racing...

I need a definitive answer, PLEASE, as I certainly don't want to overheat a new motor from KDR (ported with reliability mods)!

SleepR1

I'm wondering if those videos are for showing off...ie, those cars are NOT in competition with other cars for a sprint race or enduro?

Anyone know what type if intercooler, Cam Worth is running on his Pettit Racing 73 car?

TailHappy

I'm interested what you guys did with your AC. I just have mine sandwiched horizontally below the radiator and FMIC and belly pan. Certainly not ideal......... But surprisingly it does still manage to cool.

Anyway, I did one track event at VIR since my FMIC install. I don't currently have any ducting whatsoever, and after several hot laps, my water temps did go over 100. However, that's with a brand new engine and single turbo which hasn't been tweaked yet, and plus, like I say, no ducting. I had friends running over a bar of boost on their stock twins with the same FMIC I have and they didn't have any water temp issues. I wouldn't be too quick discount FMICs for track events. At least not for your average joe. Maybe if you're running huge boost and staying out there hours at a time.........

I'll be at another event this Monday, so we'll see how it does then.....

TailHappy

Crap, I just looked at Cam's car about a month ago, but I can't remember what FMIC he had. I wanna say Apexi........I do remember he had a HUGE radiator behind it in comparison with my little Koyo!

SleepR1

So Cam does use an FMIC???