i started to make templates to cut aluminum and to get an idea of what i want tith the ducting. what do you guys think of the setup, i will be running a scirraco puller fan in the back of the rad. and i do have the room to run some 6" pusher fans on the intercooler if needed.

 

looks good, the radiator outlet looks like it needs to be moved further up so you have 5-1/2" to 6" of ground clearance from the lowest part of your radiator also put the bumper back on and make sure there is no gaps in your ducting

 

theres enough ground clearence, but im gonna cut that fitting off and run a 16an fitting for rad hoses

 

make your ducting go to the core of the radiator and not the end tanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RTErnie &raquo;</TD></TR><TR><TD CLASS="quote">make your ducting go to the core of the radiator and not the end tanks

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hahaha. no ****. i always scratch my head when people dont do that.

also, where is the heat exchanger exhausting to? will you have a vented hood? if so, why are you venting the radiator out the bottom of the vs. through the hood just the same as the intercooler? is this simply a packaging thing or are you going for downforce / improved efficiency?

i can make some good suggestions if you are looking for the latter.

 

yeah hood will be vented, and rad will flow out bottom through twin scirraco fan setup, the reason is for increased efficiency while the car is sideways

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drsedaneg &raquo;</TD></TR><TR><TD CLASS="quote">yeah hood will be vented, and rad will flow out bottom through twin scirraco fan setup, the reason is for increased efficiency while the car is sideways</TD></TR></TABLE>

i here drifters say this a lot. please explain how this is supposed to happen.

 

catches air better sideways. a front mount sideways is a flat surface for air to bounce off of sorta, where the v-mount with ducting is like a parachute sideways catching the air better and giving it a place to go. makes sense in my head but iono if thats a good way to put it i guess.


Marcus

 

I second (or third?) having your ducting going from end of the rad core to end of the IC core. Don't include the end tanks in the ducting, it will just create a place for air to stall.

I'd also run it without the middle separator and see how it all does with IAT and CLTs. Then if you feel that one is getting an imbalance, add a piece in that can be adjusted. Slot the side ducts (or drill extra holes) and use brackets to adjust the separator.
My personal V-mount setup is currently without a middle splitter until I find definite info from my data logs that shows I should control the air split.
I have both rad and IC angled also, so that might make a difference in air flow versus one being 90degrees off from the air flow.


I don't have any decent pictures to show my makeshift temporary ducting... but it is from end of core to end of core. My small batch of data logs look quite nice so far... but not enough to provide real data honestly.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ScorpioMk &raquo;</TD></TR><TR><TD CLASS="quote">catches air better sideways. a front mount sideways is a flat surface for air to bounce off of sorta, where the v-mount with ducting is like a parachute sideways catching the air better and giving it a place to go. makes sense in my head but iono if thats a good way to put it i guess.


Marcus</TD></TR></TABLE>

i want to start by saying that i truly genuinely am not trying to sound like a dick when i say this...

that doesnt make sense. lol.

the ducting will make it more efficient, sure, but being v mounted or in the normal configuration wont make any real difference, unless you are simply accounting for more ducting area as a result of mounting further back in the v mount configuration.

i think v mounting has it's advantages as far as packaging, sort of, but if you are going to have the radiator exhaust going through the bottom of the car then you are not making the most efficient use of the ducting. think of it in terms of pressure differential and not so much airflow and it;s easier to visualize. there is more pressure under the car at high speeds that there is o the hood, unless your underbody is designed to produce downforce (such as using a front undertray to keep the airflow under the nose smooth/ higher velocity/ creating an area of low pressure), but if front end downforce is your game, then disrupting that air flow with some high pressure radiator exhaust is going to negate some of that effect and leave you chasing your tail.

if your goal is simply to have more efficient cooling i would consider ducting through the hood.

i can elaborate if you want me to. again, no offense.

 

im gonna have some tabs welded onto to rad and intercooler to mount the ducting too. i like the idea of an ajustable spliter. as for everyone downing v mounts, why cant some things be done just for fun. was there realy a reason to put a subbie motor in a bug?, is there realy a reason to do alot of things??. i think v mounts are bad *** and there proven out in drifting to work well

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drsedaneg &raquo;</TD></TR><TR><TD CLASS="quote">im gonna have some tabs welded onto to rad and intercooler to mount the ducting too. i like the idea of an ajustable spliter. as for everyone downing v mounts, why cant some things be done just for fun. was there realy a reason to put a subbie motor in a bug?, is there realy a reason to do alot of things??. i think v mounts are bad *** and there proven out in drifting to work well </TD></TR></TABLE>

i love how your response is simply, "v mounts are bad *** and proven"
have a nice day

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drsedaneg &raquo;</TD></TR><TR><TD CLASS="quote">i started to make templates to cut aluminum and to get an idea of what i want tith the ducting. what do you guys think of the setup, i will be running a scirraco puller fan in the back of the rad. and i do have the room to run some 6" pusher fans on the intercooler if needed.


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is this for your miata? im kind of confused. in your pics in the other thread it looks as if you cut the frame rails and everything out ahead of the front strut towers, but in the pics in this thread it appears that you have just about everything but the radiator support and a few other supplementary pieces of non integral frame. what gives?

 

Having the intercooler perpendicular to the airflow isn't doing you a lot of favors. Thats what I never got about these V mounts. You would be better off angling the intercooler and radiator at a 45 degree angle and allow a nice smooth area for air to flow out of the intercooler/radiator combo.

Alot like the C6R radiator setup:

http://www.corvetteblogger.com...2.jpg

Justin

 

no its the same as in other pics. just camera trickery in this one

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Justin Olson &raquo;</TD></TR><TR><TD CLASS="quote">Having the intercooler perpendicular to the airflow isn't doing you a lot of favors. Thats what I never got about these V mounts. You would be better off angling the intercooler and radiator at a 45 degree angle and allow a nice smooth area for air to flow out of the intercooler/radiator combo.

Alot like the C6R radiator setup:

http://www.corvetteblogger.com...2.jpg

Justin</TD></TR></TABLE>

you are mostly right, but given good ducting it doesnt matter as much as you think. the pressure differential on either side of the radiator, or more specifically the pressure differential between the ducting entry and exit, matters more flow than the direction of airflow.

it seems almost counter intuitive at first but the direction of the airflow isn't the most important aspect.

in other words, i could make a radiator that is parallel to the ground but has proper ducting work better than a radiator that is perpendicular to the ground but does not have the greatest ducting or any at all (like most street cars).