Welcome to the North American Subaru Impreza Owners Club Friday July 3, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Motorsports

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 05-25-2011, 10:13 AM   #1
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default overheating issue while on track, please help.

My WRX hybrid overheats after about 10 minutes on the track. From the research that I've done, I should replace the thermostat (I have a grimmspeed 160* ready to go in) and flush and fill. Supposedly that fixes the problem most of the time, but my mechanic doesn't think that it will alleviate my issue.

Here are some parts that might help you to help me:
mishimoto radiator
high pressure radiator cap
Turbo XS FMIC
2.5 block
WRX heads
vf48 turbo

Any help or guidance you could provide would be much appreciated.
* Registered users of the site do not see these ads.
ted dibiase is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 05-25-2011, 12:07 PM   #2
Bones702
Scooby Specialist
 
Member#: 205115
Join Date: Mar 2009
Chapter/Region: RMIC
Location: Clinton, Utah
Vehicle:
06 Sti Dom4.0XTR
Blue

Default

I had the same issues...

I would double check your radiator caps and test them.

and if you have ac the condensor could be causing some issues. I ended up taking my ac out, Well the condensor... wasn't worth overheating it on the track and blowing up my motor.
Bones702 is offline   Reply With Quote
Old 05-25-2011, 01:25 PM   #3
mav1c
Hoodbridge!
Moderator
 
Member#: 560
Join Date: Nov 1999
Chapter/Region: MAIC
Location: Woodbridge, VA
Vehicle:
2006 STi, '11 A4
Crystal Gray, Silver

Default

Get your coolant tested. If there's oil in it you have a head gasket leak.

Check the Mishimoto radiator for leaks. My brand new Mishimoto radiator leaked the first time on track.
mav1c is offline   Reply With Quote
Old 05-25-2011, 03:16 PM   #4
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

thanks for the help, guys.
ted dibiase is offline   Reply With Quote
Old 05-25-2011, 04:22 PM   #5
slowguy
Scooby Specialist
 
Member#: 4326
Join Date: Feb 2001
Vehicle:
2010 turdle

Default

mav1c, you still running the mishimoto?
slowguy is offline   Reply With Quote
Old 05-25-2011, 04:35 PM   #6
Scott_2.5TS
Scooby Specialist
 
Member#: 163806
Join Date: Nov 2007
Chapter/Region: VIC
Location: Victoria, B.C.
Vehicle:
2002 WRX
Silver

Default

Doesn't the 2.5/2.0 hybrid have coolant flowing issues? That would make a little sense since this only happens at the track when the car is under pressure.
Scott_2.5TS is offline   Reply With Quote
Old 05-25-2011, 04:49 PM   #7
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

Mine definitely does...
ted dibiase is offline   Reply With Quote
Old 05-25-2011, 04:52 PM   #8
AQ Motorsports
Former Vendor
 
Member#: 60836
Join Date: Apr 2004
Chapter/Region: SCIC
Location: Torrance, CA
Vehicle:
2006 Mod Class STI
TIMEATTACK!!

Default

A better radiator and improving the airflow through the front of the car will help. Even just replacing the hood scoop with a vent will probably show a noticeable difference. What, if any gauges do you have?

a cooler thermostat just opens earlier. It doesn't change the heat the engine generates or coolant flow through the motor so it will probably not help you. But, since you've overheated the car slightly you will want to at least put in a new OEM thermostat. They tend to get scuffed up and stick after the car gets too hot.


Quote:
Originally Posted by Scott_2.5TS View Post
Doesn't the 2.5/2.0 hybrid have coolant flowing issues? That would make a little sense since this only happens at the track when the car is under pressure.
No, all the passages in the block, HG, and heads line up just fine.
AQ Motorsports is offline   Reply With Quote
Old 05-25-2011, 05:05 PM   #9
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

Currently I only have a boost gauge. I had oil temp, boost, egt, and wbo2, but I got frustrated by the oil temp gauge malfunctioning and didn't really have any use for the others. I may have to look into a different radiator and reverse scoop.
ted dibiase is offline   Reply With Quote
Old 05-25-2011, 05:07 PM   #10
cenk
Scooby Newbie
 
Member#: 282567
Join Date: May 2011
Location: San Diego
Default

if you are running mishimoto fans, take them out and put back the factory fans. Mishimoto stuff doesnt work right, we trashed couple those chineese crap cans.

Besides radiator / fan setup, your hybrid engine setup doesnt help much neither. The 2.0L heads have flow issues, and you upset them even more with the 2.5L block flowing more air. And if you are boosting more than 17-18 psi, you are asking for it.

good luck.


cenk
garageGT
cenk is offline   Reply With Quote
Old 05-25-2011, 05:10 PM   #11
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

I am not running the mishimoto fans, just stock, but that shouldn't make a difference at speed anyway. I also have sti cams and boosting about 21.
ted dibiase is offline   Reply With Quote
Old 05-25-2011, 05:43 PM   #12
cenk
Scooby Newbie
 
Member#: 282567
Join Date: May 2011
Location: San Diego
Default

Your problem might be running too much boost on those choky heads. But there is still a lot of unknowns.
cenk is offline   Reply With Quote
Old 05-26-2011, 07:44 AM   #13
mav1c
Hoodbridge!
Moderator
 
Member#: 560
Join Date: Nov 1999
Chapter/Region: MAIC
Location: Woodbridge, VA
Vehicle:
2006 STi, '11 A4
Crystal Gray, Silver

Default

I dumped the Mishimoto and got a Koyo. I was having problems with the car pushing coolant. Never overheated, but would add about a quart of coolant to the overflow after every session. Drained and flushed the radiator, replaced the radiator hoses with new Samco, and installed with just water and Motul MoCool. Took a few tries to get all the air out, but now the cars runs fine. No coolant being pushed at all.
mav1c is offline   Reply With Quote
Old 05-26-2011, 10:11 AM   #14
Rokkit
Scooby Specialist
 
Member#: 84181
Join Date: Mar 2005
Chapter/Region: NESIC
Location: CT
Vehicle:
NASA #530 GTS2

Default

I see nothing about an oil cooler... get one - should lower temps overall
Rokkit is offline   Reply With Quote
Old 05-26-2011, 01:11 PM   #15
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

Quote:
Originally Posted by Rokkit View Post
I see nothing about an oil cooler... get one - should lower temps overall
I do have the killer b oil pan and pick up. I was looking at oil coolers online last night.

I am going to switch to a koyo, get an undertray, and get a reverse hood scoop, along with running distilled water and some water wetter. I'll see how that works before dropping another $300 on an oil cooler, but that is definitely on the radar.
ted dibiase is offline   Reply With Quote
Old 05-26-2011, 01:11 PM   #16
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

also, I'm running 15-50 mobil 1.
ted dibiase is offline   Reply With Quote
Old 05-26-2011, 02:06 PM   #17
growling_boxer
Scooby Specialist
 
Member#: 165744
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: Eastern PA
Vehicle:
2000 LGT
2007 STi

Default

definitely go OEM on the new t-stat. it is more open than any of the other t-stats I have seen, including the GS 160, and as a result, my on-track temps were the lowest with it, all else being relatively equal. the OEM is fully open by ~194F, so a colder t-stat won't help with overheating; it just slows down warm-up.
growling_boxer is offline   Reply With Quote
Old 05-26-2011, 02:11 PM   #18
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

thanks. will do.
ted dibiase is offline   Reply With Quote
Old 05-26-2011, 02:26 PM   #19
mav1c
Hoodbridge!
Moderator
 
Member#: 560
Join Date: Nov 1999
Chapter/Region: MAIC
Location: Woodbridge, VA
Vehicle:
2006 STi, '11 A4
Crystal Gray, Silver

Default

Quote:
Originally Posted by ted dibiase View Post
also, I'm running 15-50 mobil 1.
Where do you get it? I used to get the 5-qt jugs from Wal-Mart, but they don't sell them anymore.
mav1c is offline   Reply With Quote
Old 05-26-2011, 02:30 PM   #20
ted dibiase
Scooby Specialist
 
Member#: 94752
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Jeffersonville, Indiana
Vehicle:
2003 wrx
wrb

Default

I tried to get it at Walmart but they didn't have it. I just bought 4 1 qt bottles at AutoZone. I attempted to get some from the shop that does work on my car, but they recommended getting it from Walmart.
ted dibiase is offline   Reply With Quote
Old 05-26-2011, 02:49 PM   #21
dangerousatom
Scooby Specialist
 
Member#: 70710
Join Date: Sep 2004
Chapter/Region: Tri-State
Location: Quakertown/AREA1320 391whp
Vehicle:
2002 04STi Swaped RS
w/PPGS & 02 Wagon w/PPGs

Default

-IMO dont run a thermostat at all. I dont have one in either of my cars and they both run fine.
-An oil cooler will help or even just a remote setup for the filter will be an improvement. Either will move a bit of the oil to a cooler location and increase oil volume.
-Put a switch in line for the fan relays so you can force them both on full time.
-Get some sort of coolant additve to help drop your temps.....Redline/Royal Purple/Motul
- When at the track remove your rear hood gasket along the wiper cowl, also spacing up your hood 1/4"-1/2" on the back side will help with fresh air flow
-If you have the AC condenser up front make sure its clean. Go to a local HVAC supply store and get outdoor Home AC condenser cleaner. Mix it 3-4 parts water to 1 part cleaner in a spray bottle ( use gloves big time ) spray it and let sit for 15-20min then wash off with garden hose. This is by far the best way to clean the exterior of your radiator too.....looks like this:

dangerousatom is online now   Reply With Quote
Old 05-26-2011, 03:25 PM   #22
RB5 Clone
Scooby Specialist
 
Member#: 30909
Join Date: Dec 2002
Chapter/Region: NESIC
Location: lastditchracing.net & 03 STI
Vehicle:
RA East Open Class
Champs 07-08-09

Default

Quote:
Originally Posted by dangerousatom View Post
-Put a switch in line for the fan relays so you can force them both on full time.
or, just turn your heater control to defrost, which engages AC and forces both fans on all the time.

if your AC is disconnected, there won't be add'l load on engine anyway
RB5 Clone is offline   Reply With Quote
Old 05-31-2011, 05:21 PM   #23
newclutch
Scooby Newbie
 
Member#: 222415
Join Date: Sep 2009
Vehicle:
03 WRX
W R BLUE

Default

I have an 03 bugeye with 0 overheat problems. You say overheat problems but get more specific. Overheated water? Oil? or heatsoak? or All three.
My advice to have no problems with heat, 1. stock radiator, 2. Moroso aluminum finned oil pan. ( it acts like an oil cooler, but no plumbing). 3. APS top mount intercooler.
When my car was stock I would get heatsoak after 10 minutes. Now with double the power I have no heat issues except seeing my exhaust gauge read 1800 degrees.
newclutch is offline   Reply With Quote
Old 05-31-2011, 07:50 PM   #24
growling_boxer
Scooby Specialist
 
Member#: 165744
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: Eastern PA
Vehicle:
2000 LGT
2007 STi

Default

Quote:
Originally Posted by newclutch View Post
When my car was stock I would get heatsoak after 10 minutes. Now with double the power I have no heat issues except seeing my exhaust gauge read 1800 degrees.
how do you heatsoak your topmount on track with all that air moving over it? how cool are you actually running on track with double stock power on a stock radiator with just an aftermarket oil pan?
growling_boxer is offline   Reply With Quote
Old 06-01-2011, 10:54 AM   #25
jnathan68
Scooby Newbie
 
Member#: 191580
Join Date: Oct 2008
Default

Quote:
Originally Posted by ted dibiase View Post
I do have the killer b oil pan and pick up. I was looking at oil coolers online last night.

I am going to switch to a koyo, get an undertray, and get a reverse hood scoop, along with running distilled water and some water wetter. I'll see how that works before dropping another $300 on an oil cooler, but that is definitely on the radar.
I think you are on the right track with these changes. If you do the radiator, the water/water wetter and the aero, and still overheat, I would follow the suggestion of having the coolant checked for oil. I had a head gasket issue on another turbo car and it would run fine on the streets but at the track, it would overheat. Took us a while to track it down to the headgasket.
jnathan68 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Over reving while shifting problem. Please Help! VBwrex13 Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 46 04-10-2014 03:46 PM
Timing mark issue while finishing build... need help. 340Duster Built Motor Discussion 8 10-26-2010 01:04 AM
VF22, FMIC, Issues With Spiking/Creep?? Please Help ctwrxwagon Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 4 07-19-2004 11:39 AM
2.5 overheating, dunno what to do, please help ! NicEJ25 Normally Aspirated Powertrain 9 08-22-2003 03:48 PM
1st time at the track....please help !!! WR_eXe Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 23 02-07-2002 03:13 PM


All times are GMT -4. The time now is 12:05 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.