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Who has the V-Mount Intercooler/Radiator?

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Old 01-31-04, 02:47 AM
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oh the tsukuba Ti circuit record was broken....Yamada (ta-zen) broke it with R32.

But Ama car has a record at some other track,,,,crap forgot.

Oh well they are moving onto making RX8 parts now. Chuck...i know you know that Ama san is making the Super G8 bodykit (new type), I know you are excited for that!
Old 01-31-04, 03:02 AM
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Originally posted by Kevin T. Wyum

I'm sorry but my first post in this thread started as follows. "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?" I don't know where this persecution complex is coming from for some people but please keep me out of it. I'm really not "out to get Chuck." As I've said before I'm sure Chuck makes wonderful products. Talking about general theory on different concepts and approaches doesn't mean I'm insulting anyone or saying their product is crap.

As for ducts not lining up on the ASP IC. (bonk) They line up great. Some of the people making copies of the Medium mistakenly used the wrong drivers side end tank, a tapered one instead of the correct rectangular one for that side. I think that's what you must be talking about since it causes a large gap. The other thing is some vendors shift the IC one way or the other from its correct position to make it fit with their particular air intakes or some battery kits. Unfortunately the flexibility of the kit and peoples use of it is resulting in your claiming the kit is faulty which it is in fact not. The fault is in its flexibility in mounting which I thought was a good thing. Oh well.

I noticed there was some price talk but of course there was no mention of the install time or labor cost factored in there. Some of the front mounts and I assume the Vmount as well require upwards of 12+ hours to install compared to 1+ hours to install an SMIC. At $60 cheap shop rates that's an extra ~$700 in just the installation.

Since I'm typing I'd like to also note you mentioned the opening size of the SMIC's as being a problem and how much more air a Vmount intercooler would get. As I tried to point out in that general discussion the amount of air entering the nose area is finite. If you send X more through the intercooler that means your sending X less through the radiator. Yes of course there will be adjustments to that general concept as I mentioned but the simplified model I'm mentioning above still generally holds true with adjustment for more complex mechanics.
Again the pie is a fixed size, if you take a big peice somewhere it means you have less to use elsewhere.


Well fun discussion so far, although for a few people I'd like to request that you please take part in a civil discourse, don't go off the deep end with black helicopter stuff about people being out to get you or your pal.

Sincerely,

Kevin T. Wyum

P.S. Trev, may he rest in peace did want to improve on the ducting system. It was far more labor intensive and required things like moving the radiator and fuse box etc. Trust me, he didn't do it because he thought it was some major failing of the intercooler. He did it because he wanted to tie in the air intake and yes make an improvement to the IC at the expense of simplicity that he could call his own. He wanted to make his mark and I think he was really heading in a good direction unfortunately he didn't get to complete it.

Hey, I call it like I see it, everytime someone asks about a Rotary extreme V-mount kit I can bet money you'll jump on and say negative things about how it isn't going to be a better solution and it is, the finite pie thing is fine, but again ducted right your fine, your starting out with a poorly divided pie to begin with and that is the problem, you will get more air to both than a SMIC, you cannot actually sit there and tell me that the radiator is loosing airflow compared to a SMIC or FMIC setup. Not to mention this all goes out the window the moment there is a aftermarket bumper put on, pretty common i would say.

And I'm sorry to dissapoint you but it's not "bonk" your one of the only people who might be able to say they have handled more installs of that setup than me, if you did installs, I really don't know, but I know I can't even remember how many I've installed from ALL THREE companies they don't fit right the ducting doesn't line up with the IC 99% of the time, the problem could have been solved really easily by allowing some side to side tolerance(make the duct a little wider).
Let me say this also I'm no more a friend of Chucks than you are, the problem I'm having is why are you, a person I believe to be very knowledgeable, having a hard time seeing the benifits of this setup?, and trying so hard to knock it?

-Sean
Old 01-31-04, 03:25 AM
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Re: vspecpgt - do you KNOW who Kevin is?

Originally posted by Beast From The East
Lecturing Kevin Wyum about rotary performance, and intercoolers in particular, is sort of like explaining Newtonian physics to ..., well .... Sir Isaac Newton.....do you KNOW who Kevin is? He's like the Thomas Jefferson of rotary modification.....and probably forgotten more about rotary cars than you'll ever learn.
Yes, I know who Kevin is it doesn't make him infallible, or any more special than Cam Worth, Roger Mandeville, Jim downing,ama san...etc.


I saw from your second post that you may have just been joshing him with the 'fool' comment, but when it comes to intercoolers, my money's on Kevin.....

Beast
That's cool you can put your money anywhere you want it's yours to spend any way you see fit.
Me, I prefer to bet on me, I may be a little biased on this one but I would rather apply my own ideas and accept failure or not, with no one to blame but me.

-Sean
Old 01-31-04, 03:27 AM
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Originally posted by POM HB
ZeroR (Sean),

Well said!!!!!!!!

POM HB
Thanks

-Sean
Old 01-31-04, 03:31 AM
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Originally posted by rotaryextreme

I will not be surprised there is more air flow through the radiator than the stock setup as mentioned by Zero R who had the ASP large before and then modified it into V mount.

Chuck Huang
http://www.rotaryextreme.com
Actually it was/is a Spearco core using modified ASP/M2 endtanks.


-Sean
Old 01-31-04, 09:38 AM
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though i beleive that the vmount is a better design than a stock mount or front mount (hence why i bought it), there is no real info that says which is better...

i don't understand why people are trying to say that it won't work though, or it is a bad design. people said that smic and fmic are tried and tested... and a vmount is not..... just look at the design without lots of numbers and huge equations, just look at the design and ask your self how it could not be as good or better than a front mount or a stock mount....

you don't have to buy one if you don't like, you can keep a fmic or a smic, but just by looking at the design you should be able to see some great characteristics that fmic and smic don't have.
Old 01-31-04, 11:04 AM
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yeah, I saw one that was in the process of being installed, just the IC was in place, no rad or intake, but it looked pretty good. It was Chuck's design and that was why I was asking about the sealing. With it not all in there, I couldn't really tell about that, but the kit looked great and had everything you need for the job.

Tim
Old 01-31-04, 11:34 AM
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Does the VMIC work with the 51R Honda Battery that is smaller than the stock one?

Or will I have to consider that little dinky bike battery?
Old 01-31-04, 01:37 PM
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Joe:

Don't worry about it. I am not like pissed off or anything, otherwise I would have cussed at you.

I was just saying you can't conclude the RE-A car is better than the rest simply because of the FMIC. They are the #1 rotary shop in Japan and all the rest shops look up to them and try to beat them. It's just beating RE-A then you will become #1. FMIC will work if you have a real race setup radiator like the one used on the RE-A car to take away all the heat dumped by the FMIC. If you don't have a good radiator, the car will overheat. If you have tried to drive 100+ mph at a 100+F hot day with a FMIC, you will understand that the car will overheat, even with a 2" upgraded radiator.

I have used all 3 kinds of IC's: SMIC, FMIC and now VMIC. I used to swap IC's between seasons. During summer, I will use the SMIC because my car even with a 2" radiator will overheat with the FMIC during hot summer days when the ambient temp is 85+F.
During winter time, I will swap back to FMIC because FMIC cools down the air better than SMIC and I don't have to worry about overheating during winter. Now with VMIC, I don't have to swap anymore.

If you live in the area that ambient temp is always cold, a FMIC will work just fine. But I prefer a set up that will work in all kinds of environment. I used to make SMIC and FMIC but I don't offer them anymore because I have found VMIC is more versatile than the rest. I don't sell products that I don't even want to use on my personal car to customers. Will I put FMIC or SMIC back on my own personal car? You bet I won't at this time until there is another set up that's better than VMIC. I keep an open mind and see what's out there. If there is a design better than VMIC, you bet I will try it and find out myself. Try it and then comment is my way of doing things. I don't comment on stuff that I never use.

Knight Sports came out with V mount first. Back in 99, the Panspeed car used the SMIC. It looks like a vmount but if you look closely, the air coming out of the radiator blows right into the SMIC. If you have the RX7 mag #2, it's in there. Panspeed used to use front mounts but after they blew the engine due to overheating, they change to that comprosied SMIC. In 2001, they changed to Vmount on their race car and knight sports at the time already had the retail version of the vmount. I went to Tokyo Auto Salon and saw the cars in person.

Chuck Huang


Originally posted by LetsGO7
Chuck Sorry for being so defensive. I'm not trying to put a bad mouth on you. Can we be friends?!

I didn't know Knight Speed was the first to use the VMIC?! If i remember right, around 4 years ago...Panspeed was promoting there VMIC circuit car and at the time, knight sport showed there demo car with that twin core SMIC setup.

You bring in all these different variables like drivers and suspension. But we are talking about IC setups...the winning pakage, am i wrong? In order to find out the we must go straight into the IC setup alone. Why, how about the other setups. Panspeed and RE Amamiya are pretty up there compare to other shops. (Ama being little more money and supported, trust, aspara drinks and list goes on.) But suspension, it's ohlins vs. quantums and drives might be in the same level...RE-Amamiya uses a Super Taikyu series driver (I think he drives the number 15 or 14 FD in class 3). Let's don't get into that...

I was just talking about the IC setup. I see the FMIC with more success, that's all.

Sorry **** you off Chuck.

-joe
Old 01-31-04, 01:54 PM
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umm.. that person should install the radiator first. Why did he put the IC on first? Just to see how it looks? If you want some photos of the shields installed and how the intake looks send me a PM. Thanks.

Chuck Huang

Originally posted by Tim Benton
yeah, I saw one that was in the process of being installed, just the IC was in place, no rad or intake, but it looked pretty good. It was Chuck's design and that was why I was asking about the sealing. With it not all in there, I couldn't really tell about that, but the kit looked great and had everything you need for the job.

Tim
Old 01-31-04, 01:57 PM
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With the HKS one, you can but Cossie should be able to confirm on that.

With mine, you will need to use the PC680 battery or reolcate the battery to the trunk. PC680 works fine if you drive your car at least once a week.

Chuck Huang

Originally posted by BATMAN
Does the VMIC work with the 51R Honda Battery that is smaller than the stock one?

Or will I have to consider that little dinky bike battery?
Old 01-31-04, 03:26 PM
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actually the pc680 is really great... i've not driven my car for over a week and it still fired right up.... its a good battery.....
Old 01-31-04, 06:43 PM
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My PC680 lasted my 3 weeks vacation...from last before Xmas till pass the new years...
Old 01-31-04, 10:35 PM
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I've enjoyed reading this thread, very educational as I am new to RX7's. I have an automatic 93 touring and I'm interested if Chuck's V-mount setup can be applied to my car. Currently I've upgraded to a KOYO radiator and had to add an additional oil cooler for the transmission. One question for Chuck, what are the ID sizes on the hoses used for the intercooler pipes? Please PM me.
Matt
Old 01-31-04, 11:12 PM
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Yeah, you can use vmount on an auto. You can use it on any year of 3rd gen RX7 including manual and auto.

The intercooler pipes are 2.75" just like the stock one. I can custom made it in 3" but the Greddy elbow inlet is 2.75". Unless you modify the Greddy elbow to 3", it pretty much makes no difference going to 3". Bigger pipe will slow down the air flow velocity so there isn't a real benefit if you don't really need it.

The bad news is that Spearco discontinued the tube and fin IC core that we use for the regular v mount so I have to discontinue it for a while until I can find the same size of IC core that flows as well. I only have one more regular v mount left.

The good news is that I already made a monster v mount to use with the stock twins. You can't use an air box with this one but the massive core size of 20"x11"x4.5" is big enough to cool anything coming in. The core flows 1400 CFM at 15 psi. Efficiency of the intercooler is always above 90% when you drive more than 10 mph. I have the flow chart from Spearco to prove this.

Here is the pic of the unpolished one. Sorry about the bad quality of pic.



Chuck Huang

Originally posted by RX7-2NR
I've enjoyed reading this thread, very educational as I am new to RX7's. I have an automatic 93 touring and I'm interested if Chuck's V-mount setup can be applied to my car. Currently I've upgraded to a KOYO radiator and had to add an additional oil cooler for the transmission. One question for Chuck, what are the ID sizes on the hoses used for the intercooler pipes? Please PM me.
Matt
Old 02-01-04, 09:27 AM
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Thank you Chuck, I'm thinking of using my Apexi intakes also.
Matt
Old 02-01-04, 01:02 PM
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Cossie - I have installed the HKS vmount intercooler. The car is currently with out the frontend, hood, and fenders. They are still at the body shop freshly painted. My question to you is. Does the position of the radiator allow you to use the factory undertray?

I can't tell if there will be enough room under there without a frontend to look at. I don't read Japanese (obviously). So the directions aren't a big help.

I read that you already ran this set up at the track. I would like to know if you used the undertray or not. It should only be a few more weeks and I will post pics.

thanks
Graig
Old 02-01-04, 02:48 PM
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Originally posted by rotaryextreme

The bad news is that Spearco discontinued the tube and fin IC core that we use for the regular v mount so I have to discontinue it for a while until I can find the same size of IC core that flows as well. I only have one more regular v mount left.
So what brand do you think you might be going with? Also how long do you think it will be until you are able to put them back up for sale?
Old 02-01-04, 03:16 PM
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Are the ducts only made to fit the 93-95 bumpers or do you have ducts that will fit the bigger 99 spec bumper?
Old 02-01-04, 04:09 PM
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Originally posted by jgtcspec7
Cossie - I have installed the HKS vmount intercooler. The car is currently with out the frontend, hood, and fenders. They are still at the body shop freshly painted. My question to you is. Does the position of the radiator allow you to use the factory undertray?

I can't tell if there will be enough room under there without a frontend to look at. I don't read Japanese (obviously). So the directions aren't a big help.

I read that you already ran this set up at the track. I would like to know if you used the undertray or not. It should only be a few more weeks and I will post pics.

thanks
Graig
PMed u
Old 02-01-04, 06:50 PM
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I was wondering if anyone has any pics of the radaitor mounted, without the ic in, just a shot of the radaitor? Also pics of the brackets? I am just trying to get a better idea of how well everything is kept solid.
Old 02-01-04, 06:56 PM
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Spearco does not make the exact size of the bar and plate core that will fit. They have one that's the same size as the medium size SMIC which is smaller but I would like to use the biggest core I can fit in there.

I am waiting for PWR to get back to me on the size I need. I am also considering Garrett. As long as I can find a core that fits, it will be back for sale. Until then, I don't know how long it's going to take. If I can't find a core that's the same size as the core I used for regular vmount, it will be discontinued or I will use a slightly larger core that still fits with the vmount air box but will require battery relocation. That means the mini-battery kit can't be used.

I still have one more regular v mount IC core in stock. If you are interested, please let me know. Thank you.

Chuck Huang

Originally posted by rx7raca
So what brand do you think you might be going with? Also how long do you think it will be until you are able to put them back up for sale?
Old 02-01-04, 08:24 PM
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I would stay away from the PWR core. It has very low pressure drop, but lacks a good amount of turbulators which is what helps cool down the air. The xs engineering core and spearco/precision are two of the best for cooling down the air with minimal pressure drop. I thought Spearco could make any custom size IC that you wish? Maybe give precision turbo and engine a call. www.precisionte.com

Last edited by krazywli19; 02-01-04 at 08:30 PM.
Old 02-01-04, 08:33 PM
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Spearco only has certain sizes of the bars. They can add as many bars as you want for the height of the IC core but they can't cut the bars to different lengths, according to them.

I don't have any experience with PWR core so far so I don't know about the core efficiency. Before I purchase any core, I ask for a flow chart that shows efficiency and pressure drop.

Thanks for the help.

Chuck Huang



Originally posted by krazywli19
I would stay away from the PWR core. It has very low pressure drop, but lacks a good amount of turbulators which is what helps cool down the air. The xs engineering core and spearco/precision are two of the best for cooling down the air with minimal pressure drop. I thought Spearco could make any custom size IC that you wish? Maybe give precision turbo and engine a call.

Last edited by rotaryextreme; 02-01-04 at 08:44 PM.
Old 02-01-04, 08:48 PM
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Originally posted by rotaryextreme
Spearco only has certain sizes of the bars. They can add as many bars as you want for the height of the IC core but they can't cut the bars to different lengths, according to them.

I don't have any experience with PWR core so far so I don't know about the core efficiency. Before I purchase any core, I ask for a flow chart that shows efficiency and pressure drop.

Who is precision turbo and engine? Do you have a website or phone number?

Thanks for the help.

Chuck Huang
I know about how well the different type of intercoolers work is because the guy who drives jotechs honda race car has had a lot of experience with all the different intercoolers on honda's, and this was his observation from all the different cars he has tuned.

I edited my post with a website link, you must have quoted me before I did so. It's www.precisionte.com
They have some core sizes listed in their intercooler section but if you want a custom size it would probably be a good idea to call them and see if they can work with you. What size is yoru regular sized vmount?


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