intercooler gets extreeeeamly heat soaked

[NAisBST]

So the ms3 is decently quick until it warms up and stop and go night cruising the intercooler gets so heat soaked the car becomes a lagging pig.. can i halfway fix this still using the stock intercooler?

[red95_240sx]

spray nawz on dat hoe

[TreFlip999]

So the ms3 is decently quick until it warms up and stop and go night cruising the intercooler gets so heat soaked the car becomes a lagging pig.. can i halfway fix this still using the stock intercooler?

Look in the how-to section.. theres a thread on a DIY intercooler sprayer

[shaodome]

So the ms3 is decently quick until it warms up and stop and go night cruising the intercooler gets so heat soaked the car becomes a lagging pig.. can i halfway fix this still using the stock intercooler?

Ali?

[hectik1]

I notice the heat soak, but once you start moving it wakes up.

[Bonafide_Spd3]

My car seems like once you drive for a couple of hours, it doesn't have as much power on a long drive. Not sure if this is the same problem or not

[numbnuts22715]

meth injection

[dkswim]

**** Fmic ****

[mrjoshyman]

**** Fmic ****

i'll likely be taking this route -- seems like the best way to go....

[AutoXRacer]

There is a heat relective tape that the Subbie owners use. Its gold in color and I've been told it reduces up to 30* of heat...

I'm planning to look into this...though a roll is a little expensive.

Check it out: http://www.pegasusautoracing.com/productselection.asp?Product=1838

[hectik1]

There is a heat relective tape that the Subbie owners use. Its gold in color and I've been told it reduces up to 30* of heat...

I'm planning to look into this...though a roll is a little expensive.

Check it out: http://www.pegasusautoracing.com/productselection.asp?Product=1838
I have seen this stuff before but where would we put this...

[clos561]

**** Fmic ****


=====[::::::::]=====

[controlo]

I have seen this stuff before but where would we put this...

+1...

[lestat13]

=====[::::::::]=====

Ordered! (headbang)

[turbo23]

So I have also though this through. I have a old 87 rx7 turbo2, back when it was close to stock form, I had a stock top mount, which of course would heat soak, and I never really did anything about it till I went with the fmic (mounted horiziontally to the ground, so not really a fmic, but flows super amazing!) So for my 3, Im not going fmic, too much money, Im trying to keep the car basically stockish, not going to crazy hp. So recently I purchased a spal fan,which Ill be mount on top of the IC. During slow crusing and stop and go ill have a switch on the fan. Fan flows 810cfm so it should work quite well. During long highway drives your IC shouldnt heat soak, as long as you have sufficent airflow. So thats my fix, ill have pics up maybe next week when Im done

[Bonafide_Spd3]

yeah, I don't know if its because of the humidity or what. But when I would want to get on it after driving a couple of hours it seemed like it would have no balls. Don't know what is up with that

[Zimmer]

So I have also though this through. I have a old 87 rx7 turbo2, back when it was close to stock form, I had a stock top mount, which of course would heat soak, and I never really did anything about it till I went with the fmic (mounted horiziontally to the ground, so not really a fmic, but flows super amazing!) So for my 3, Im not going fmic, too much money, Im trying to keep the car basically stockish, not going to crazy hp. So recently I purchased a spal fan,which Ill be mount on top of the IC. During slow crusing and stop and go ill have a switch on the fan. Fan flows 810cfm so it should work quite well. During long highway drives your IC shouldnt heat soak, as long as you have sufficent airflow. So thats my fix, ill have pics up maybe next week when Im done

ya i'd like to see this install.... (uhm)

[AutoXRacer]

I have seen this stuff before but where would we put this...

You would basically wrap the whole underside of the intercooler...any area that would be hit by direct heat.

[AutoXRacer]

So I have also though this through. I have a old 87 rx7 turbo2, back when it was close to stock form, I had a stock top mount, which of course would heat soak, and I never really did anything about it till I went with the fmic (mounted horiziontally to the ground, so not really a fmic, but flows super amazing!) So for my 3, Im not going fmic, too much money, Im trying to keep the car basically stockish, not going to crazy hp. So recently I purchased a spal fan,which Ill be mount on top of the IC. During slow crusing and stop and go ill have a switch on the fan. Fan flows 810cfm so it should work quite well. During long highway drives your IC shouldnt heat soak, as long as you have sufficent airflow. So thats my fix, ill have pics up maybe next week when Im done

What about the possibility of reducing airflow into the intercooler by having the fan in the way. The fan at highway speeds will basically be a blockage to airflow. Any thoughts?

[turbo23]

I thought about that and did some checking. According to some things ive read it doesnt block much airflow. If i ever decide to by a dash hawk, or find someone near me who can let me borrow one, I want to watch my air temps. The fan I picked up is only 2" thick, above 50-60 the pressure from the air coming in should have no problems getting through. This is the fan http://www.the-fan-man.com/shop/size-push-part-0365-p-195.html?cPath=33 as you can see it shouldnt block the airflow

[turbo23]

what I also like about a fan is, unlike a water mist system, you dont run out of water:) It can just run and run, I guess this is kind of a experiemental thing.

[skilletrx]

i think the fan idea is pretty interesting, is it an easy drop in like replacing a computer fan?

[Kurt07]

Has anyone else thought about venting the hood? I have thought about and it looks like you could put a vent on each side of intercooler duct work.

[lestat13]

I think I remember hearing that it would not be a benefit to vent the hood, as the grill opening, hood, and intercooler have been specifically designed together to provide airflow.....

then again, I might be wrong

[Kurt07]

I think I remember hearing that it would not be a benefit to vent the hood, as the grill opening, hood, and intercooler have been specifically designed together to provide airflow.....

then again, I might be wrong

The vents would just allow the heat to exit the hood while you are sitting at a light and not for getting more airflow for the intercooler. I don't know if it would really help or not.

[Mid_Life_Crisis]

You would basically wrap the whole underside of the intercooler...any area that would be hit by direct heat.

I don't think you would wrap the intercooler. You need to create a nice wide heat shield to go between the IC and the engine, as far from the IC as possible to limit interference with air movement and insulate that. It would be extra trick if you could shape it to funnel the air to the back of the engine compartment and put a vent in the hood to carry the hot air out. Complete the path. There is already a reasonable supply of cool air coming in, we need to help it get out after it heats up.

[AutoXRacer]

I don't think you would wrap the intercooler. You need to create a nice wide heat shield to go between the IC and the engine, as far from the IC as possible to limit interference with air movement and insulate that. It would be extra trick if you could shape it to funnel the air to the back of the engine compartment and put a vent in the hood to carry the hot air out. Complete the path. There is already a reasonable supply of cool air coming in, we need to help it get out after it heats up.

Thats what the Subbie guys did...they wrapped or should I say taped-up their whole intercooler (basically the end tanks and a little of the tubes) and claimed they saw cooler boosted air temps.

I haven't tried it yet...so I can not speak by experience.

Regarding the vented hood, for the FMIC guys, it would be perfect...for us TMIC, I think we are SOL...

[turbo23]

i think the fan idea is pretty interesting, is it an easy drop in like replacing a computer fan?

Thats basically what Im working on. I want to see how much room is underneath my intercooler, but I think the room is too small. So Ill be cutting my intercooler shroud grill section in the shape of the fan. Im working to make this install is simple as possible. I also will not be running a relay. Ill be running a aircraft style resetable circuit breaker, and a 40amp switch. Im going to try and get this done next week so Ill have some pics. I also emailed the guys from spal fans. They said the fan shouldnt block airflow, and if so very little. They did recommend a pulling fan underneath, but I dont beleive we have the room to accomplish that, hence why im going with a top mount.

[turbo23]

eventually to get rid of some heat issues if i ever go with a dp, ill be jet-hot coating the piping, manifold, and hotside of the turbo.

[AutoXRacer]

eventually to get rid of some heat issues if i ever go with a dp, ill be jet-hot coating the piping, manifold, and hotside of the turbo.

Hmmm, I'm R&R my DP next month for some service work...I wonder if I could get it coated. (2thumbs)


This won't work with an ETS TMIC... the 3.25" core has very little room and the 3.5" has no room what so ever...

[ericrapp]

Late again . the stocker is questionable at best. Move to a frount mount and be done. Responding to the original subject . excuse please. I have a bigger top mount and the heat soak when not moving in the higher ambient temps[ 90+] will get you sometimes. But it is much better than stock!

[Kurt07]

Open your hood when you fill up for gas. Trust me, it helps.

[turbo23]

I do that if I drive a good distance, or just when I come home. The heat just pours out

[dkswim]

i have to do that when i fly a fuel injected cessna land to fuel up then open the bonnet so you dont run into vapor lock.

[SwampAss]

I fixed my heat soak by previously owning a VW 1.8T with a side mount IC the size of a lunchbox.


YOU DON'T KNOW HEAT SOAK. (flame2)

[jaydubz]

I fixed my heat soak by previously owning a VW 1.8T with a side mount IC the size of a lunchbox.


YOU DON'T KNOW HEAT SOAK. (flame2)

+1 You speak the Gospel Brother! Heaven forbid a reflash without upgrading the intercooler!

[john blutarski]

**** Fmic ****

nuff said

[ericrapp]

There is a method of removing the weather stripping on the drivers end of the hood and jacking it up at the hinges to move air out of engine bay. I would imagine that might effect the front side hinge a little but whatever. I think about how to remove the hot air quickly and efficiently as you guys have. Will the fan run off temp sensor at cool side of IC? And yes I could believe that to draw air with fan, compared to push would be best. But moving hot air to the top of the motor should be avoided also. The downfall of the top mount. The best idea, one cent here, mentioned already would be to move air out of the hot side of the intercooler area and out the of engine bay asap. with out creating aero turbulence or reducing down force for the high speed applications.

[cageyvet]

FMIC & extra cold air FTW!!!

[CoolWhip]

**** Fmic ****

+1

[mazdaspeed32007]

originally i was thinking the fan idea also. my cousin is an engineer for a company that makes things with similar products and he said he could make one with a temp gauge to read when the air got a certain temp at the top of the IC so the fan would auto kick on like the stock fan. cool idea. but then again.....i honetsly dont car because after about 10 sec. of driving the heat soak problem has pretty much gone away. you could always carry around a cooler of dry ice.

USER GUIDE: exit car at intersection, apply dry ice to IC, return to vehicle. repeat if necessary. In case of accidental overdose, please do not induce idle, speed and drive recklessly until proper dry ice level has been obtained.

[turbo23]

I guess for street use a fmic is ok, I however feel its terrible for racing. A top mount works just fine under loads, if your crusing slow down a strip, and you are looking for a race, stop it :-) But if you must have that edge, i could see how the fmic would be an advantage.

[aalonso]

FMIC or put a hood scoop like the subies IMO ;]

[Gmac03]

Meth inj. or Front mount. Don't spray anything over it. NO2...engine go boom. CO2...engine go slow.

Gmac

[jville]

taping over the bottom of the intercooler up would defeat the purpose of it, this would prevent airflow throught the fins preventing the cooling of the charged air. however sheilding the heat from the motor while still allowing ariflow would most def. be benificial.

[mazdaspeed32007]

i think they ment leave the fins open but cover bth ends of the core....i think. either way just shield the valve cover from the IC and youll block loads of heat from the engine to your IC. maybe we could fab something to cover the sides and bottom of the IC but leave the top good for airflow. it would block the hot air up but leave cold air in and around the IC. anyone think this would work? i hink it would be a good cheap mod but very beneficial. maybe find some old sheet metal to bend around and drill holes through to make it fit. ill try it this weekend if i get the chance. sounds like a decent add on for nothing at all. i mean something like almost to seal the IC to the top of the motor...???

[jville]

i think they ment leave the fins open but cover bth ends of the core....i think. either way just shield the valve cover from the IC and youll block loads of heat from the engine to your IC. maybe we could fab something to cover the sides and bottom of the IC but leave the top good for airflow. it would block the hot air up but leave cold air in and around the IC. anyone think this would work? i hink it would be a good cheap mod but very beneficial. maybe find some old sheet metal to bend around and drill holes through to make it fit. ill try it this weekend if i get the chance. sounds like a decent add on for nothing at all. i mean something like almost to seal the IC to the top of the motor...???

+1 i have tues wed and thur off i am feeling inke this shouldn't be a hard project, bring home some tools from work and take lots of pics of the proccess so if it works out my fellow speeds can try.

[matsuda]

So the ms3 is decently quick until it warms up and stop and go night cruising the intercooler gets so heat soaked the car becomes a lagging pig.. can i halfway fix this still using the stock intercooler?

It's not just the intercooler.

In stop and go traffic, the intake air temp can go way up. The ECU does not ignore the IAT sensor.

If the cooling fan comes on, you could be seeing 150 degree intake temps on a summer day.

[mazdaspeed32007]

It's not just the intercooler.

In stop and go traffic, the intake air temp can go way up. The ECU does not ignore the IAT sensor.

If the cooling fan comes on, you could be seeing 150 degree intake temps on a summer day.

thats only at idle more than likely. once you touch the gas you get a suck through your intake like you wouldnt believe. your intake pulls in so much air that even when its hot air inside its gone within the first rev of the motor. its never a stagnant air in your intake either. your IC is in such a shitty place to grab the hot air and has a lot more vulnerability being directly on top of your motor to trap some hot air until you get that turbo spooling then your pulling in hot air like you wouldnt believe. (flame2)

[Kurt07]

It's not just the intercooler.

In stop and go traffic, the intake air temp can go way up. The ECU does not ignore the IAT sensor.

If the cooling fan comes on, you could be seeing 150 degree intake temps on a summer day.

I saw 154 degrees for the IAT the other day sitting in traffic.

[AutoXRacer]

I saw 154 degrees for the IAT the other day sitting in traffic.

On saturday, I had 165 intake temps and 160 boosted air temps!!!!

I've officially decided to wrap my DP, turbo, turbo inlet, and intake tubing.

[Mid_Life_Crisis]

On saturday, I had 165 intake temps and 160 boosted air temps!!!!

I've officially decided to wrap my DP, turbo, turbo inlet, and intake tubing.

Don't forget your turbo manifold.

[ericrapp]

2007 that little smiley thing you did is nifty!

[matsuda]

thats only at idle more than likely. once you touch the gas you get a suck through your intake like you wouldnt believe. your intake pulls in so much air that even when its hot air inside its gone within the first rev of the motor. its never a stagnant air in your intake either. your IC is in such a shitty place to grab the hot air and has a lot more vulnerability being directly on top of your motor to trap some hot air until you get that turbo spooling then your pulling in hot air like you wouldnt believe. (flame2)

If you monitor the IAT in real time (like I do), you would find that this is not the case. Keep in mind that when the cooling fan is running, hot air is blasted throughout the engine compartment. The air temperature under the hood (and near the intake) does not magically become cooler just because the intake is drawing in more air.

[matsuda]

On saturday, I had 165 intake temps and 160 boosted air temps!!!!



Holy mackerel...

If there was a contest for the highest IAT, you would probably win.

Even if the intercooler was at 70 degrees, those IAT temps would severely hurt performance.

[mazdaspeed32007]

If you monitor the IAT in real time (like I do), you would find that this is not the case. Keep in mind that when the cooling fan is running, hot air is blasted throughout the engine compartment. The air temperature under the hood (and near the intake) does not magically become cooler just because the intake is drawing in more air.

unfortunately i do not have a monitor so my thoughts were just speculation. how long do the temperatures take to cool down then. i wouldnt suspect more than 10 seconds after your in motion. im talking something along the lines of this scenario. driving down a highway for maybe 30 mins. get off the highway. hit a stop light. temperatures rise to that 150. you start to move and air flow is restored at about 15-20 mph and your temps should be back to normal short after no?

it would also depend on whether you have a SRI or a CAI also. where the hp isnt much different the isolation of the CAI cone would greatly effect this would it not?

[jville]

well i have removed the intercooler in attempt to get an idea for what size/shape sheild i iwll be leaning towards. now i'm off the auto stores to search for some sufficient materials. wish me luck.

[ericrapp]

luck to you then.

[dkswim]

i have hit 174 iat and 163 boost while idleing during pic shoot temps came down as soon as i started to move.

[astraelraen]

The engine compartment on the cars seems pretty well insulated. On my CX7 I can easily see 130-150F IATs if idling in traffic. The heat just builds up in there and there is no where for it to go. Moving helps a little, but not much.

On a day when Boost temp and IAT are up in the 140+ range, nothing will help. I can park my car in my garage and go back out 4 hours later and the engine bay is still pouring heat out.

Usually when I go home I open the hood for at least an hour so the heat isn't just sitting in the engine bay. The DISI cars need a vented hood, or some other way to quickly evacuate engine bay heat.

[lestat13]

unfortunately i do not have a monitor so my thoughts were just speculation. how long do the temperatures take to cool down then. i wouldnt suspect more than 10 seconds after your in motion. im talking something along the lines of this scenario. driving down a highway for maybe 30 mins. get off the highway. hit a stop light. temperatures rise to that 150. you start to move and air flow is restored at about 15-20 mph and your temps should be back to normal short after no?

it would also depend on whether you have a SRI or a CAI also. where the hp isnt much different the isolation of the CAI cone would greatly effect this would it not?

I logged a bunch of IATs right as summer was starting to hit us with 100+ degree heat. I found that it only took my car a few seconds even in the hottest weather to get IATs back to ambient air temps.... as long as you give it some acceleration ;) Cruising slowly or driving like grandma won't do it, you really gotta get upto a speed where air is gonna flow, I'd say at LEAST 45mph. When it's cooler out, IATs become ambient almost instantly when you start moving.

I have the Cobb SRI btw, we were having one of those SRI vs CAI discussions about hot underhood temps.

[jville]

well so much for the good luck, the power steering pump went out on me! but awell took it in to mazda this morning, it will be in tom. at 10 so hopefully i'll have my speed back by 2ish, they got me in a slow ass accord as A rental.

[ericrapp]

jville, this is just a lesson in appreciation. you might love the mazda even more when you get her back.

[jville]

yea got her back at 6. The even detailed the whole thing for me and put on a new serp belt while they were in there. So i decides to revamp the K&N and fill her up and now my babie back. Hopefully when i return to work tommorrow i will be able to conjur up some type of heatsheilding to fab up something.

[mazdaspeed32007]

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GTFO!!!!!!!!!!!!!! (blowup) no soliciting asshole.

[dkswim]

spam-a-fied

[turbo23]

I saw one one of the forums someone mentioned the COBB air box really didnt do much for temps, just more for looks. If I pick up the box, Ill be either putting gold heat tape on the outside of the box, or some sort of insulation. A local s2k guy wrapped his intake in that stuff that you used to make sun visors. Since its insulated, the outside stayed hot, and the inside stayed cool, he noticed a great drop of intake temps, so Ill be doing something along those lines.

[jville]

OK after 4 ten hour days i'm finally home and off for the next 3 days and will be attempting to fab up something or wrapping to try and reduce the amount of heatsoak or atleast prolong it from occuring.