Why does it seems everytime I see a big turbo rx7 they go with a front mount instead of a v-mount? and most seem to mount the radiator traditionally as well? Just curious why this is? Thanks

 

because most of those guys only go 1/4 mile at a time. not enough time to heat things up.

street or track driven cars need to be treated a little bit differently.

ask them what their water temps are at on a 100+F day in the city.

 

That and I'm assuming their style of turbo manifold sits the turbo too far forward to fit a v mount.

 

A front mount can be bigger in volume too, so the huge amount of air being shifted can be cooled better in those ten seconds or less......

 

A v-mount is really only 'necessary' for cars that see the road course.

 

not only that, alot of those guys with huge turbos and big power numbers like that are running on e85, which cools the motor down a lot, therefore there's no need for a v-mount

 

and FDs don't have additional heat from the oil cooler to deal with.

 

+ easier to install and more clearance for a even bigger turbo

 

Fmic is less clutter in the bay. And properly ducted with an aftermarket front bumper is just as cool as a vmount.

 

There are more off the shelf FMIC kits and they are cheaper.

Jack

 

If you went with a quality fmic and radiator with the proper ducting and say dual 25row oil coolers and e85. Would that be enough to keep the temps down enough for those times I make it to a road course or vmount be best. oh yea and a vented hood to

 

My big turbo front mount car does not overheat and is daily driven not a track only car.
Oem stats and radiator cap.
Ebay thick *** aluminum rad.
Gilmer pulleys with oem fan and shroud
Oem under bellypan.
S5 front bumper no extra cuts or ducting
Went with a electric fan setup and it did ran way hotter,went back 2 oem fan and no issues at all.

 

i hate front mounts s4 rx7s dont have enough vent for them thats why im selling my kit . i have a aluminum rad too with and electric fan on speed 2 all the time when i drive around . all the air gets blocked from the frontmount. im doing a custom vmount cause after doing 2 hardhighway pulls on car gets soo hot in summer time

 

V mounts have less piping which usually helps spool...since filling up a smaller volume is easier than a larger one with extra piping....and a huge truck sizes FMIC.

I have a FMIC just because my car came with it and its cheaper to stick with it. I would do a V mount if I chose from the get go, because of easier cooling, faster spool, etc.

 

Cosmetic????

 

Exactly!! I have 35r in first gen big custom alum rad and ebay fmic... Beehive oil cooler... After beating on the car for an hour in summer,either in town or not it stays cool... Key is stock FAN... Oh yeah... No fan shroud either.... I will never use a E fan unless its absulutely necessary

 

The main reason a big turbo car will have a FMIC is simply packaging. Most big turbo manifolds aren't made with a VMIC in mind, and of course a FMIC can work, it's just not the better of the two when it comes to solving the problem.

 

Running the HKS cast manifold and the Garrett T04S turbo... V-mount fits fine.. even the airpump is left on there =)

LINK Garaget | Mazda RX-7 (1994)

wanna play "hide the turbo" ? =)

but yeah most have a manifold that sets the turbo to far up and forward to get a goos V-mount fitted

 

I went with a v-mount for the Following reasons;

Both radiator and intercooler access equally fresh air.
Total volume of system, turbo to throttle, is kept at a minimum.
Looks ******* sick

Check my First gen Setup, this is how I left it around the beginning of Nov. Im in MN, so Ill be back out there in a few weeks.

 

Large turbos and large v-mounts will be very cluter in the engine bay as already mentioned. FMIC clears up lots of room for the big snails.

 

Plenty of room for big turbos and Vmounts in an FC anyways. Here was a HX52 on an eBay manifold for my old REW setup

 

my Freddy FMIC has been the biggest pain in the *** to install...

i wish i had just went with an apexi- like unit that sits under the hood latch. the extra inches of the intercooler doesn't seem worth it to cut the **** out of my crash bar.

 

Id argue that doesn't look like a big turbo..

If were talking gt42's and smaller yeh V mount shouldnt be a issue.

 

It is hard to see it from this view, but we use a very tall Ron Davis Radiator, and Greddy 2 row intercooler directly in front. The greddy intercooler blocks less than half the radiator. Both water and intake temps remained cool even in 120deg F AZ days( old shop location). We do use water injection to help with the undersized intercooler core. The intercooler piping is very short, and the air does not have make a 90 degree turn( which it does not like to do naturally). We also get a much larger radiator than one can fit in the V-mount position which is necessary for high boost applications.

 

That huge turbo has that fitment with your off the shelf manifold?

sk8world is wanted to step up to a s475, but i dont think his A-spec manifold will filt the thing.