Cossie

Link to my review

There has been mention of the HKS kit having fitment issues.
1) Power steering is there
2)Fitment issues on front bumper is due to the fact kit is made for the 99 and up front end and also I have a thicker core raditor in the car. HKS suggests stock.

BATMAN

who else has this?

Cossie

I do

SpeedKing

iTrader: (4)

I just looked this up the other day. These are the two best threads:

https://www.rx7club.com/showthread.p...hreadid=185761
https://www.rx7club.com/showthread.p...hreadid=185329

Fumanchu

Hopefully DCrosby will chime in here.


His setup is nice.

vspecpgt

i've got the rotary extreme monster vmount and it is the ****!!!! i love it. my intake temps are lower than my friend with an apexi front mount, and i don't even have a hood yet, my water temps are usually around 83 or so (i do have a pfc) and now my turbo gets nice cold air. i didn't have to modify anything to get it to fit, just drill a a few holes. ac will work with this kit, however mine never worked so i am not using it..... ps works fine with this kit and just requires you to lower the ps cooler ( a 1 min job) um.... yea i love it..... i can't wait to get my vented hood and then see my intake temps.

the other weeked i drove from orlando to ft lauderdale... it was pretty cold in the morning....but my intake temps were like 9 degrees when i left and slowly rose up to about 18-20 by the time i reached ft lauderdale, and thats because it was getting warmer.... water temps stayed at 80 the whole way..... and its a 3 hour trip. over all i beleive i'm getting intake temps that are 7-10 degrees above ambient... maybe even a little less.....

all in all i love the vmount and i would never do any other set up.... chuck at rotary extreme is awesome!

RedX7

Nice! The rotary Extreme V-Mount is my next performance upgrade.

D1Import2nr

I wonder what type of hp numbers the RE v-mount with the new stage 3 BNR's would pull with other minor mods. (ecu, full exhaust, etc etc)

Scrub

iTrader: (25)

Mine put down 360 before my engine went at 15 psi. I think that my engine wasn't running right. Now I have a new ported motor with the same setup and it pulls like a MOTHER!!! Im guessing in the neighborhood of 400 at 16psi. I love my V-mount..I've had it for a long time. I think I was the second one to get it from rotary extreme. The intake temps this time of year are rediculous......start the car cold it'll be -12......the intake temps will stay around -3....if I let it heat soak to about 30 it will drop like a rock back to -3...I haven't driven it in a while though. It's way to cold out to be driving my car. But definatly a nice investment. I still have to put my RE-ad9 hood on....can't wait to see temps then

Scrub

iTrader: (25)

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Kevin T. Wyum

I'm not talking about the quality or function of Vmounts so let's not go there but why in the world are people talking and actually bragging it seems about temperatures on the highway after driving for 3 hours as testimony about Intercoolers?

"the other weeked i drove from orlando to ft lauderdale... it was pretty cold in the morning....but my intake temps were like 9 degrees when i left and slowly rose up to about 18-20 by the time i reached ft lauderdale, and thats because it was getting warmer.... water temps stayed at 80 the whole way..... and its a 3 hour trip. over all i beleive i'm getting intake temps that are 7-10 degrees above ambient... maybe even a little less....."

Boggle.

"i do have a pfc) and now my turbo gets nice cold air. "

What does your intercooler have to do with the air temps entering your turbo's?


Again my point has nothing to do with any particular product, just the wacky testimonials.


Kevin T. Wyum

scratchjunkie

Chucks v-mount is superior engineering, A+++++. If you dont have chucks v-mount your rx7 sucks ***. buy his vmount. your intake temps will drop like my pants. your coolant will be so cold you can drink it like iced tea on a summer hot day. blah blah blah. buy his vmount or shut the f$%# up.

Tim Benton

iTrader: (1)

I guess in a round about way, they assume the v-mount allows more air from the front of the car into the air-box.
I haven't seen one in person to see how air gets to the box though.

Tim

BATMAN

How many folks make v-mounts?

rynberg

I agree, Kevin. You can have low air temps with any intercooler driving on the highway in cold weather....

I'm not dissing on the v-mount either (I've seen the Rotary Extreme v-mount in person and it looks very well done), but I have yet to see a single person post results in a track situation in warm weather.

When someone posts good results after running 20-25 minutes on the track, THAT will be a good testimonial.

BTW, Tim Benton: The RE v-mount intake is pretty much open to the "V". You can actually see the primary turbo air filter from the looking into the front of the car! I don't think there's any airflow issues with that setup!

vspecpgt

i don't get it.... what is your point then? did you post before under another name or something???
and its not just about the intercooler you fool, driving for a long while on the interstate, my fans didn't even have to come on low speed, the radiator gets enough air to just keep it cold, also, intake temps stayed very low because there is no hot air at all going on to the intercooler....(ya know... since the radiator is positioned the other way...)

i do have a PFC, which is why my fans are set to come on at 83 85 and 87... but i guess you are not familiar with a PFC,

and yes my turbo gets nice cold air, the radiator pushes, or pulls rather, the air down toward the road, the air that gets between the intercooler and radiator is just normal cold air from outside and thats how my turbo gets cold air. thats another reason the vmount is so good, your intake and your intercooler and your radiator all get cold air....

tim, i beleieve the normal vmount has a duct that runs in between the intercooler and the radiator, like in the "V" so the cold air gets scooped up... i have the monster one and am not running an air box, my filter just sits behind the "V" and ingests whatever cold air doesn't go through either the radiator or the intercooler....

batman, rotary extreme, hks, and i beleive signal.. but i don't think they really have akit.... more of a custom thing... also most big japanese tuners have thier own version, but they don't sell it over here.

vspecpgt

rynberg... i beleive the vmount was created especially for the track... that way you get cold air to the intercooler and to your radiator, eliminating the over heating problem.........

cagefreak

rynberg

I understand the design principles behind the v-mount, but it doesn't mean anything until I've seen real track results....

rynberg

double post

Tim Benton

iTrader: (1)

For those who've seen the setup in person, how does it look at far as sealing around the setup and intake to keep all the air going through both? Do you need to get some foam filler to stuff around the sides to help it seal the air path?
I like the design of it, but since I have a M2 med and intake and Mazdacomp rad, it's never going to be on my shopping list, but I would get it if I was just starting to mod the car.

Tim

Cossie

On the way up to Thuderhill on Sunday morning....left Los Altos ard 5 in the morning...initial temps

water ard the 80-85sC mark
air temps 9-11sC
Air temp outside was probarly in the mid 40sF to low 50F


Sunday on the track
water temps low 80sC all day long
air temps low to mid 30sC
Air temp outside varied between 60sF to low 70sF

Monday on track
water temps hit 90C once, stayed on in the mid 80s all day
Air temps were in the mid 30sC all day

On both days, I would average about 6-9 laps.
Car is set at .8bar boost.

Lap times hovered ard the 2.15s~2.16s
My fastest laptime was a 2.14.33s.

rynberg

Thanks for the info Cossie. I ran at Thunderhill in 50F degree weather at about 0.75 bar, so it's a good comparison. Ignoring the fact that I still have the stock furnaces and you are single and that I just have a single stock oil cooler, your water temps are a little cooler than mine were. Your air temps are about 10C cooler in warmer weather.

Kevin T. Wyum

"and its not just about the intercooler you fool, driving for a long while on the interstate, my fans didn't even have to come on low speed,..."

ROFL you might want to refrain from calling people fool so quickly in the future. You do know that even with a stock radiator and intercooler at highway speeds your fans should never really come on right?

"...the radiator gets enough air to just keep it cold, also, intake temps stayed very low because there is no hot air at all going on to the intercooler....(ya know... since the radiator is positioned the other way...)"

Sigh, at highway speeds none of this matters my friend. Every SMIC made stays just as cold on the freeway. That's the reason I posted. You could essentially get the same results you posted with an entirely stock car in those conditions.

The other issue I think you're missing is the frontal opening or mouth of the front clip is the same size, meaning the total airflow is going to be about the same with some exceptions I suppose for restrictions inside the cavity creating a little pressure bubble in front of the opening but then we're getting into to windtunnel testing and really fancy computer models.

For the sake of simplicity in discussion let's assume we'll see the same airflow into the front of the car with the same nose. We'll ignore vented hoods because they'll have the same benefits for all the IC's with less to front mounts. So we then have 3 factors to think about.

1. Does all the air coming into the nose of the car either go through the radiator, IC or air intake? If there are gaps around the radiator or IC's air will take the path of least resistance and you'll lose a large amount of air from going through anything. This is why people with properly sealed radiators have very few issues with overheating relatively speaking.

2. Is the flow of air restricted or inhibited by directional changes, cores too tightly packed or no escape chamber behind the radiator or IC which stops or reduces flow through it?

3. Since we have the same amount of air for the most part to divy up between the three components how will it help your water temps to reduce the amount of airflow through the radiator and instead send it to the IC? It's essentially the same size pie. What's the best ratio to cut it up into is the question.

Here's something else that has confused me for awhile. The only real downside SMIC's have ever really had is people claiming heatsoak worries them at a stop because the IC is almost above the radiator. In looking at these Vmounts setups isn't the IC directly above the radiator? Is it safe to assume then at a stop that Vmounts will also heatsoak? If not please explain why.

The real issues are core efficiencies, pressure drops and the like. As some others have posted you really need to get on the track for extended lapping sessions on a normal summer day and tell us some numbers then, what something does at highway speeds is about as telling as if your windows were tinted extra dark. For $2800 I'm sure it work okay, but for double the price I'd like to see some actual results.


Kevin T. Wyum

LetsGO7

iTrader: (2)

Kevin,

I think people feel that SMIC is above the fans more so than radiator...the hot air sucked by the fans will hit the IC thus some kind of heatsoak. I'm not sure if this is true but a possible factor.

For the Vmounts...that heat flow is down stream, it avoids the IC (the hot air sucked by the fan). But the top tanks of the radiator becomes very closely to the IC.

I think all IC setup runs into some king of heatsoak. But car moves most of the time, so at a stop is only when the traffic is effected or trying to hook up with a girl.

The problem that "I" see for Vmount...

The underpanel. Either you put on a underpanel with BIG holes for the fan to blow the hot air away and get the fins damages faster and wouldn't cool for ****. OR don't cut it and block the air from flowing.

BUT

As you mentioned, if something is blocking the radiator or any heat exchanger, it will not flow well which it will try going to a less restrictive area, for this case, going to the IC.

Also the air travel under the car...the create grip or down force the air (i think) needs to travel faster at the bottom and slower on top. To create lift or up force, faster on top and slow at bottom. ANYHOW, the Vmount hot air-flow (since it's shooting down) will create turbulence and thus losing the potential to create down force without rear wings and such.

OK, before BUSHING, this my opinion, try to tell me where i'm wrong and why, so i don't throw wrong info next time.

Thank Kevin and to all

-joe