Pettit STMIC vs Rotary Extreme v-mount
 

I have two 94 FDs, one has a vmount (silver) set up and the other is mostly stock (black) with intake and exaust mods. I want to keep my a/c on the black one. I have come up with two options for intercooler and radiator setups while retaining my a/c. Option one is the pettit racing coolcharger 3 with a fluidyne radiator. option two is the rotary extreme vmount for twinturbo Fd. The pettit racing kit is about 1300 bucks but requires a few extra things to finish it off i.e. fluidyne radiator, greddy elbow, battery kit, pettit intake, efiny y pipe, fuel pump. Altogether it would be around 3,000 bucks to finish. The rotary extreme kit is is 2400 and I also would need other items for a total of around 3500 bucks. My black Fd is not going to be a monster like my silver one is, its going to be mostly street driven. what intercooler kit should I go with? does anybody have any info on these two setups? :scratch:

get the Vmount setup in the group buy section
I think it was 1250$ or something
I think u can keep the A/C better check

v-mount no matter what

regardless of what you do with the car, these cars heat soak so bad with smic that its not worth wasting your money

i remember just going to a fmic from my smic i dropped a minimum of 20 degrees C on the pfc in air temps and at least 10 degrees C in water temps during regular cruising on the highway

I have a knightsports vmic available in the forsale section if you are interested.

Hehe...take that FMIC on a track and chances are you will have issues.

Even a $3000+ v-mount will be ineffective if it isn't ducted and sealed properly.

OP, know your purpose. Design appropriately. Each configuration has it's benefits and drawbacks.

Not that this subject hasn't been beaten to death....

Regards,
Crispy

the car is not going to be on the track, thats why I have the silver fd. this is more of a reliability mod for a street car. Also, im not using front mount, its Stock mount vs v mount. you guys forget to read or something? my silver FD has vmount setup already. my black fd is going to be just a street car.

honestly I would not spend the money for a real coolcharge III.

I have a godspeed smic (same size as pettits) with a coolcharge III duct and my setup works great for the street. The best part was that it was around $400 total.

I made my own version of the Cool Charge 3. Used the Pettit duct, the same size/spec intercooler, but made my own piping.

I'm ready to go V-Mount...

Dear Pot,
Please note who's post I quoted in reference to the FMIC. Also please note you said "mostly street driven." So what the hell is that supposed to be then? Read what you wrote. To *some of us* that would mean you might be taking it to a track occasionally. Piss on your colleagues with inflamatory statements and you aren't really engendering support.
Oh and good luck with your build.
Kettle

Where does your extra $1k come from on each?

The Vmount is a better design. If you have the budget, go for it. Even unducted, it is better than any other option. I haven't bothered to re-install the ducting on mine after I removed it a few years ago to do some work.

While a vmount is clearly a great design, I would think the ASP/Pettit IC with a fan would be better. Mind you, I'm personally more concerned over high water temps than a few degrees of air temp increase. The radiator is going to get more airflow in it's stock position and the IC should get good airflow while moving and have the fan for street driving/traffic.

For those that made their own, any idea what the pressure drop is of the cores you used? I know the ASP cores (not sure what exact brand Kevin used to use) had ridiculously low pressure drop. But, I'm not even sure if Pettit uses the same cores as Kevin did...

They were Spearco cores.

I'm using an M2 Large for the IC on my custom Vmount. :)

link please

vmic all the way. ben at rotary extreme is cool as hell an i approve of how he fits his proucts!! hahaa :icon_tup:

Apexi front mount...keeps ac, doesn't obstruct radiator, drops air temps, looks cool :)

I have one on my 20b and have a spare for sale with a complete pipe kit for twins

To your first point, the v-mount excels all the way around--it's not even close. Radiator gets more air in the v-mount configuration: 1) there is less obstruction behind it; and, 2) there is more differential pressure across the rad as it has a more direct exit out the lower portion of the engine bay and beneath the vehicle. Consequently, the IC works against less pressure in the upper portion of the engine bay as it not competing with the radiator (which exits down and out).

In any event, a good V mount really transforms the car and the engine bay. So much simpler to get to everything than with the stock 'layered' arrangement. That alone is worth the conversion. A good SMIC would be my second choice.

As to the pressure drop, I am seeing 1-->1.5# loss (max) across the IC with an ASP clone medium sized unit.

+1 On this.... I am thoroughly happy with my track kit. The fit and finish is nothing short of spectacular. Ben is professional, friendly, and prompt. Retaining the AC was the primary reason I bought it. However, every aspect of the setup proved to exceed my expectations.

My build thread shows full pics.

You may be right, but I've never seen any data confirming the better air flow, or better water temps. I agree that a v-mount is likely better, or at least as good, for cooling the IC over a SMIC design. I'm not so sure that the increased surface flux of air hitting the radiator in the SM position doesn't outweigh the possible benefits you mentioned above. Either way, they are a great design, and it's likely that in most driving applications it really doesn't matter which one goes with.

What brand is your ASP clone?

I would definitely go v mount, just make sure whatever intercooler you use is a Spearco or Bell core. Many of the cheaper core (ebay, etc...) have high pressure drop and are nowhere near as efficient as a high quality Spearco or Bell core.

yes i am aware, but when you get a real greddy kit thats never been installed for 50 bucks, you would probably take it too, and as i said anythings better then stock mount

im building a v mount this season anyways

he is right. I've posted my temps on various of the other Vmount threads. What kind of other data are you looking for?

I just haven't seen it, can you post a link? I did a quick search and didn't find it.