Combating the heat

[Tcoat]

Originally Posted by pallen

I have read the entire thread, but curious if anyone has tried venting heat out the fake side vents on the front fenders?

There are some threads on it someplace. Was a pile of work for almost zero overall effect. The resulting vents were just simply too small to make any real difference.

[Kiske]

Originally Posted by Gamace

I would like to vent heat though the fender garnishes but I don't see any garnish that's made with mesh anymore since the Prova one got discontinued.
!

C-West, T-Craft and Sard replacement garnishes are vented and still sold. It is still cheaper to buy a 2nd-hand set of stock ones and just cut them though...

Originally Posted by Tcoat

There are some threads on it someplace. Was a pile of work for almost zero overall effect. The resulting vents were just simply too small to make any real difference.

Not too small of a difference. It's been a nice addition for the turbo crowd. Useless for the stock group though. It is still a good mod for anyone wanting to keep the OEM hood. The mod along with removing the rear hood seal and replacing the lower aluminum underpanel are really your only options.

Originally Posted by pallen

I have read the entire thread, but curious if anyone has tried venting heat out the fake side vents on the front fenders?

Read this whole thread: https://www.ft86club.com/forums/showthread.php?t=70815


https://www.ft86club.com/forums/showthread.php?t=139387

[pallen]

Sorry, typo - I meant to say I haven’t read the whole tread
��

[pallen]

Originally Posted by Kiske

Read this whole thread: https://www.ft86club.com/forums/showthread.php?t=70815


https://www.ft86club.com/forums/showthread.php?t=139387

Looks nice. I would think the effect would be measurable. Looks like more than a simple swap of the trim piece with an open piece though, so I can see why its not common.

[ML]

Buy one of these and be done with it.

https://racelouvers.com/brz-fr-s-86-...-86-2012-2019/

[Lonewolf]

Originally Posted by pallen

I have read the entire thread, but curious if anyone has tried venting heat out the fake side vents on the front fenders?

Originally Posted by Gamace

Well to combat the heat with my setup (HKS Super Manifold Boxer Spec) I just installed the Laile Beatrush Underpanel and that totally takes care of the Headers. I would like to vent heat though the fender garnishes but I don't see any garnish that's made with mesh anymore since the Prova one got discontinued.

Toyota 86 in the building!

I know that Lunatic used to have an FRS he used to track with functional fender vents. He said that he could feel the air be evacuated from the engine bay once the fans turned on. Since it is a high-pressure area, I'm not sure how objectively well they work, but the pragmatist in me think it probably helps vent some heat and pressure from under the hood.


Go see Page 46 in this thread for some fender vents used by The Racers Line, Lunatic, and Jetbill: https://www.ft86club.com/forums/show...unatic&page=46

[TurboBRZ_UAE]

Adding my two cents here. Ambient temps are from 20C/70F in winter to 50C/120F in summer so this may be the best test environment for heat issues.

Temperatures are absolutely fine during DD, stop and go traffic, and spirited driving. During a series of hard street pulls can just about get the oil temp to 100C/210F. All of this is with the Air Conditioning on at all times.

On track however, oil touches 120C/250F after 5 laps (8 minutes ish) forcing me to do a cooldown lap or pull into the pits for 5 minutes.

Basic engine setup:
Avo Stage 2 turbo setup, built motor, 13-18psi depending on map, Redline 10W-40 oil.
FMIC in front of radiator
Turbo blanket
Heat wrapping from turbo to midpipe

Cooling setup:
Koyorad radiator & high pressure rad cap
Samco / Mishimoto hoses (rad and heater)
OEM fans (Middle East spec fans seem to be more capable than other markets)
Custom oil cooler with thermostatic plate mounted in cut open fog light area
Custom vented hood
Gold heat shielding on areas near headers

Further parts installed but not tested:
AEM Water/meth injection
Water misting kit for FMIC and oil cooler (operating but have not gathered data)

To me it seems the vented hood makes all the difference. During traffic I can literally see the heat haze rising out of the hood.

Pictures below:

[malubawla]

i had issues for a while with all the normal cooling mods made. switched to spal fans and issues are gone.

[86TOYO2k17]

Originally Posted by TurboBRZ_UAE

Pictures below:

That’s not a lot of airflow to your oil cooler. You should try something like this, at least with the exhaust fans, worked wonders for dropping oil temps.

[Lonewolf]

Bump for newer members looking for more cooling discussion...

[Ashikabi]

Originally Posted by 86TOYO2k17

That’s not a lot of airflow to your oil cooler. You should try something like this, at least with the exhaust fans, worked wonders for dropping oil temps.

Honestly that air flow should be fine. Possibly too much. He should be running ducting, which I dunno if he is. But properly ducted, the opening should be about 30% of the heat exchangers size. Ideally the air would be ducted out on the back side to that same 30% dimension. Usually there isn't room for that. But that's "ideal". As far as airflow with no ducting, I'm not sure it's even possible to know what's best without trial and error, since so much air is going to travel around the heat exchanger instead of through it

Sent from my ONEPLUS A5010 using Tapatalk

[86TOYO2k17]

Originally Posted by Ashikabi

Honestly that air flow should be fine. Possibly too much. He should be running ducting, which I dunno if he is. But properly ducted, the opening should be about 30% of the heat exchangers size. Ideally the air would be ducted out on the back side to that same 30% dimension. Usually there isn't room for that. But that's "ideal". As far as airflow with no ducting, I'm not sure it's even possible to know what's best without trial and error, since so much air is going to travel around the heat exchanger instead of through it

Sent from my ONEPLUS A5010 using Tapatalk

Necromancer.
He said he had oil overheating issues with that setup.
But yes ducting (which doesn’t look like he has) and rear vents (which not sure if he has but is in the setup I recommended) would help. Still a small opening regardless.

[DarkPira7e]

Major necro here but this was the first time I've really beat on the car in its current form.
Did autocross on an 89 degree day. 15 runs with just a few minutes in between each. Each lap about 44 seconds and mostly redline 1st and second gear. Oil temps got up to 215f max, and coolant didn't reach 210f the whole day.
Front mount JDL turbo, 3076r size.

Considerations -

Verus hood vents
No oil cooler. Oil not returned to pan, it is vacuumed out of the turbo by the rear cam (fa20 wrx style)
Entire a/c system removed, including condenser
3" thick bar and plate Garrett FMIC covering entries radiator, pushed back as close to the radiator as possible.
FRS front bumper, plastic grille intact
Truefocus fab crash bar, stock crash bar removed
Stock radiator
Stock coolant hoses
Mishimoto slim fan shroud and fans
Factory Toyota coolant
PTP turbo blanket
DEI black fiberglass wrap on whole downpipe
Turbo manifold ceramic coated
Turbo wastegate recirculated into exhaust.

I believe that the top 4 largest impacts here are-

Removing a/c condenser - much less air restriction in cooling stack

Mounting intercooler close to radiator - Air doesn't go stagnant between them while in motion

Hood vents - this is critical for this platform in any use capacity

Recirculating wastegate - not dumping hot exhaust under the engine in open air is HUGE

My car absolutely has not seen extended heavy load and I am not saying that my car would not overheat under other circumstances. But to be able to hotlap autocross on airport tarmac on a 90 degree day with not a cloud in the sky? This is a great recipe for a street build. Just wanted to give someone in the future some ideas.

[RongTurnRacing]

Originally Posted by DarkPira7e

Major necro here but this was the first time I've really beat on the car in its current form.
Did autocross on an 89 degree day. 15 runs with just a few minutes in between each. Each lap about 44 seconds and mostly redline 1st and second gear. Oil temps got up to 215f max, and coolant didn't reach 210f the whole day.
Front mount JDL turbo, 3076r size.

Considerations -

Verus hood vents
No oil cooler. Oil not returned to pan, it is vacuumed out of the turbo by the rear cam (fa20 wrx style).......

How are you vacuuming the oil? Are you using the automatic transmission vacuum pump or are you using some other contraption? I know PTuning has done this kind of thing but they won't sell any of their parts individually.

Just curious.