frm_808

iTrader: (1)

DUDE i envy you!!

FR_Javier

most if not all air to air fmic setups follow this trend. with out mass flow/airflow across the fmic, there will be very little heat transfer. from what i have seen, a turbo car/truck standing still will see an increase in IATs up to a point, but then levels off. temps go right back down as soon as you start moving. shouldn't be a problem though, as most EMS's (MAP and MAF) have fuel/ignition corrections based on IATs and or coolant temps.

here's an old datalog of a turbo civic that moved a little, then sat still, then moved a lil faster. you can see the IATs rise when its still then drop when its moving. iirc, it was between 110-115 deg that day.

TC22RE

Well good to know my intercooler is functioning properly, now I don't have as much of a desire to relocate it in front of the fan.

dcg9381

Here's a log of some of my data.. this is on a fairly cool day for TX, 78-80degrees ambient, I believe.

Key:
MAP (Manifold Absolute Pressure) = 100KPA is no vacuum, 150KPA = 7.35 psi, 200KPA = 14.7psi

RPM = RPM

MAT = (Manifold Absolute Temperature) in degrees F

So this is a 13-14 psi run, reaching intake temps of 158 degees.

dcg9381

I'm working on mounting an RX7 intercooler behind the skid plate.
There isn't enough air flow with the stock skid plate angle, so I'm fabricating a scoop that gradually comes up to the lower front cross member. It shouldn't impact ground clearance that much, but I'll need to stay out of anything really mucky.

We'll see how it works out... I still have to redo most of the intake tubing.. Darn couplers alone cost me $150.

TC22RE

I thought about doing that... installing it on the skid plate... It seemed like a lot of work at the time so I went between the frame rails... turns out it was just as much work... eck.... I like the way you're doing it. The scoop will make a big difference. I need to get around to making a bigger scoop on mine. Air temps are dropping up here in the mountains... 50 degrees intake temps in the morning with the intercooler... all I can say is WOW... huge difference in performance.

Turbo4Runner

Cool idea DCG...

I think that if you want a FMIC thats really holds up to the "F" in its name, muck is going to be an issue no matter what.

Looking forward to your completed pictures.
Yeah those couplers will get you! It's kinda like when you buy a stereo system thats within your budget but then you have to buy all the cables.

mt_goat

There is quite a bit of space inside a winch bumper for the winch, if you could find an intercooler the right size to take advantage of that space you could cut the front of the winch bumper open for air flow to the intercooler. Something like this:


As far as the liquid to air intercooler there is lots of room under my ext-cab for a standalone radiator/cooler and pump. Here is a small system I'm installing for a different purpose but same idea would apply. You can see there is room for a larger cooler or radiator too:

dcg9381

I've already got a tube based winch bumper. I located the winch down on the bumper to keep it out of the way of radiator airflow.

If i could get a radiator down in that bumper, the winch itself sits in front of the air flow, I'd have to use a scoop.

We'll see how this thing does at cooling.. The bumper redesign is the 2nd choice.

Air to water would be fine also, but I've got enough electrical stuff going on already and I'm trying to keep it simple..

frm_808

iTrader: (1)

anyone ever did a "V" mounted intercooler and radiator?

Bskey

I am totally new to the Toyota Turbo engines, but have been a member of the Subaru tuning community for some time, so I have enough info to be dangerous. But I am curious if anyone has tried meth injection? It has tons of benefits and I cant see why it wouldn't add tons of benefit on this setup.

Also, what about the Nissan 300zx inter coolers that are side mounted. They add more I/C piping, but may provide for more convenient mounting options.

Again, I may be missing a lot of factors that are specific to the Yota Turbo setup, but that's my thoughts.

dcg9381

It would provide some benefit, certainly.. The biggest limitation of the toyota 22RET setup is the factory ECU. We've got a ~7.5:1 CR motor limited to about 8psi due to factory design. Doing water or meth injection at 8psi would have some benefits, but it's still limited in how much you can cool the intake charge at 8psi.


The MR2 had a side mount IC with a fan, I considered using it, I just couldn't find one easily...

mt_goat

I'm using 50/50 water/meth injection set to come on at about 4-5 psi. But I can't use an intercooler because I'm boosting with a supercharger.

frm_808

iTrader: (1)

i used to have am s14 with an sr swap and did a few basic mods to it. i had someone else do the tuning for it but i watched and tried to pick up some things tho. i would like to learn more on tunning tho to build my yota properly but i now work at a diesel shop and we do quit a few of mods on dodges, fords and chevys.

dcg9381

Well, I installed an intercooler from whatever the latest generation of turbo RX7 is. It's a fairly small thing, maybe 8 x 20 or so in terms of core.



I found it quite challenging to install an intercooler when I've already got a tube bumper and a winch... Simply put there was no way to get an intercooler on to my front end without significantly dropping the approach angle or starting over with a new bumper.

As such, I decided to integrate it behind the skid plate. For air flow, I built a scoop - No loss of ground clearance, no IC hanging off ready to be damaged. Note, scoop isn't complete in these photos - but you get the design idea.
I have a slight extension of the skid plate - so some impact to approach angle, but not much.








Plumbing the thing was another challenge - I ended up buying a pretty decent selection of silicone hoses - most of which I didn't use. It's a very tight fit. It can be done by the backyard mechanic, using pre-bent tube (exhaust) and a simple abrasive saw.

Results:
I went to an IC after logging a lot of heat soak in my intake manifold.
After being brought up to operating temperature, my intake temperatures could easily be as high as 180-200 degrees F.
Note, stock intake temps are *not* good either - in the range of 125 degrees F - probably due to the level of heat given off by the radiator and exhuast system.

After installing the IC, I see intake temps of 90-104 degrees. That's a decrease of 70-95 degrees, which is definitely worth while.

I'll post up more photos later...
BTW - not an expensive mod. Intercooler ran about $30 on ebay. Most of it was labor and overkill on silicone hoses.

Turbo4Runner

Looking good! Looking forward to seeing a picture of the entire front of the truck with it mounted.

I'm also curious to see if a core that small will heat soak on longer runs with higher load (I.e. highway).

dcg9381

I commute about 45 minutes one way to work every day. I'm sure ambient temp will impact this, but peak temps were at 103-104 today on the way to work while in boost. They'd drop off after peak. I don't cruise in boost, just generally 60% throttle and above.

Other guys with ICs were reporting intake temps at or very near ambient temps - my IC isn't as good as theirs.. Probably due to the fact that it's located close to the underside of the motor and that I'm blowing hot air past it on the rear side. However, it's a big improvement over 180-190 degree intake temps.

dcg9381

I need to put a grate on the "scoop" itself, but there isn't any direct line of fire between the road and the IC itself.. Here are additional photos. I think the plate I used is 14GA - whatever it is, it's thicker than the skid plate.

frm_808

iTrader: (1)

just make sure to keep an eye out for when it gets dirty