Cracked Radiator - Subaru Forester Owners Forum
Subaru Forester Forum
ebay search
Subaru Forester Forum
Go Back   Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Problems, Maintenance, and Warranty
SubaruForester.org is the premier Subaru Forester Forum on the internet. Registered Users do not see the above ads.
User Tag List

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 12-07-2008, 01:05 PM   #1 (permalink)
Registered User
 
Join Date: Oct 2006
Posts: 9
Location: Atlanta, GA
Car Year: 2004
Car Model: Forester
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default Cracked Radiator

Was wondering if anyone else had a cracked radiator like mine, 2004 Forester XT 95,000 miles.

It appears as though the weight of the fan assembly /road vibration has caused a stress fracture on the top side of the screw boss.
[screw boss being pulled down]

It has been spraying out coolant through the crack.

I forgot to take a picture of the crack prior to putting a temporary patch over the crack [JB weld]. I don't expect the patch to hold long, just want to get a few more miles in while I await shipment of the replacement radiator.

Is this a common problem?

Chris
Attached Thumbnails
Cracked Radiator-dscn7629es.jpg  
eyefly is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-07-2008, 01:38 PM   #2 (permalink)
admin
Lifetime Supporting Member
 
SuperRu's Avatar
 
Join Date: Jan 2006
Posts: 5,449
Location: Little 5 Points (Atlanta, GA)
Car Year: 2004
Car Model: XT
Transmission: 4EAT
Gallery: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 48 Post(s)
Feedback Score: 6 reviews
Default

No, that is not a common problem. I have had one leak at the seam seal. Where the plastic top attaches to the aluminum core.
__________________
Richard
04 XT.... 98S
SuperRu is online now   Reply With Quote
Old 12-08-2008, 02:06 PM   #3 (permalink)
Super Moderator
 
flstffxe's Avatar
 
Join Date: Dec 2007
Posts: 7,729
Location: Coon Rapids, MN
Car Year: 2008
Car Model: Forester X Premium
Transmission: 5MT
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 1 reviews
Default

I would say this is pretty common, a quick search on nabisco yielded several results for cracked radiators. Some are cracked in the same place, some are not, but most failed due to a crack on the plastic end tanks.


With pics and several others who have had the tanks of their radiator crack:
How's this for a broken radiator? - NASIOC



Need Help! My car is going through radiators - NASIOC
Overheating Issues... - NASIOC
Needed Asap: Wrx Radiator! - NASIOC
Radiator took a dump... - NASIOC
Cracked radiator - NASIOC
radiator cracked!! - NASIOC
__________________
His - 08 X Prem 5mt
Hers - 08 X 4EAT
flstffxe is offline   Reply With Quote
Old 12-08-2008, 02:11 PM   #4 (permalink)
Lifetime Supporting Member
 
tre36's Avatar
 
Join Date: Jan 2006
Posts: 2,884
Location: Kent, WA
Car Year: 2012
Car Model: camry se
Transmission: 6AT
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
Default

Great. More preventative maintenance expenses to think of.
tre36 is offline   Reply With Quote
Old 12-08-2008, 02:39 PM   #5 (permalink)
admin
Lifetime Supporting Member
 
SuperRu's Avatar
 
Join Date: Jan 2006
Posts: 5,449
Location: Little 5 Points (Atlanta, GA)
Car Year: 2004
Car Model: XT
Transmission: 4EAT
Gallery: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 48 Post(s)
Feedback Score: 6 reviews
Default

Quote:
Originally Posted by tre36 View Post
Great. More preventative maintenance expenses to think of.
Oy vey, now more to worry about!
Do you think the failures might be related to over tightening of the hose clamps?
__________________
Richard
04 XT.... 98S
SuperRu is online now   Reply With Quote
Old 12-08-2008, 02:50 PM   #6 (permalink)
Forum Member
 
funkymonkey1002's Avatar
 
Join Date: Jan 2006
Posts: 9,011
Location: Boston
Car Year: 2004
Car Model: 2.5 XT
Transmission: 4eat
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 8 reviews
Default

Quote:
Originally Posted by SuperRu View Post
Oy vey, now more to worry about!
Do you think the failures might be related to over tightening of the hose clamps?
I think its just the nature of using plastic on something that sees heat cycles like the rad. Plastic end tanks just don't make sense to me, especially on radiators and the newer style subaru intercoolers.
__________________
04xt/4eat, 16g, STI bits and bobs
funkymonkey1002 is offline   Reply With Quote
Old 12-08-2008, 02:52 PM   #7 (permalink)
The Seventh Sister
Administrator
Lifetime Supporting Member
 
pleiad7's Avatar
 
Join Date: Jan 2006
Posts: 27,162
Location: Sonoma County, CA
Car Year: 2004
Car Model: Forester XT Premium
Transmission: 4EAT
Gallery: 70
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 201 Post(s)
Feedback Score: 50 reviews
Default

Yeah, the plastic endtanks on Subie radiators are pretty notorious for cracking. I remember first reading about it when the STi radiator caps were all the rage. The endtanks often can't handle the resulting increase in pressure. In the OP's case it could be as simple as fatigue of the material, I suppose, especially at that mileage.
__________________
-Silke
04 FXT PP PSM ~ "Subed"
98 Forester S ~ "Slynki"
pleiad7 is offline   Reply With Quote
Old 12-08-2008, 03:30 PM   #8 (permalink)
Lifetime Supporting Member
 
tre36's Avatar
 
Join Date: Jan 2006
Posts: 2,884
Location: Kent, WA
Car Year: 2012
Car Model: camry se
Transmission: 6AT
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
Default

Quote:
Originally Posted by SuperRu View Post
Oy vey, now more to worry about!
Do you think the failures might be related to over tightening of the hose clamps?

I'm with funkymonkey1002 on this.

I'm going to run my car til the last crank. I probably would look into a aluminum radiator or full steel at the very least for replacement.

I went through two headgasket replacement already and dread anything that leaks coolant. I'm fearful at this point actually.
tre36 is offline   Reply With Quote
Old 12-08-2008, 03:57 PM   #9 (permalink)
Registered User
 
Join Date: Oct 2008
Posts: 53
Location: Nanaimo, BC
Car Year: 1998
Car Model: Forester
Gallery: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default

Check what kind of warranty you have. That's clearly a falt and the rad should be replaced.
British-G is offline   Reply With Quote
Old 12-08-2008, 04:44 PM   #10 (permalink)
The Seventh Sister
Administrator
Lifetime Supporting Member
 
pleiad7's Avatar
 
Join Date: Jan 2006
Posts: 27,162
Location: Sonoma County, CA
Car Year: 2004
Car Model: Forester XT Premium
Transmission: 4EAT
Gallery: 70
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 201 Post(s)
Feedback Score: 50 reviews
Default

At 95k miles on an 04? I think the OP is SOL warranty-wise, unless he has the 100k Added Security Gold Plan...
__________________
-Silke
04 FXT PP PSM ~ "Subed"
98 Forester S ~ "Slynki"
pleiad7 is offline   Reply With Quote
Old 12-08-2008, 06:08 PM   #11 (permalink)
Registered User
Thread Starter
 
Join Date: Oct 2006
Posts: 9
Location: Atlanta, GA
Car Year: 2004
Car Model: Forester
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by SuperRu View Post
Oy vey, now more to worry about!
Do you think the failures might be related to over tightening of the hose clamps?
I really don't see any relationship to the hose clamps. I have never tightened them since new so if they were overtightened it would be that way from the factory. Also if it were the hoseclamp I would expect the the plastic part of the radiator inside the hose to be damaged and it is not.

I think it is just the tank cannot take the road vibration, especially with the weight of the fan assembly hanging off the screw boss. A better design would have fillets and or ribs on the screw bosses /posts to more evenly spread out the stresses.

It seems to be a common problem on the NASIOC forum as flstffxe pointed out. Theirs cracked too and further away from the hose clamps.

How's this for a broken radiator? - Page 2 - NASIOC

However if you do overtighten the hose clamps that would lead to another failure no doubt.

Chris
eyefly is offline   Reply With Quote
Old 12-08-2008, 06:12 PM   #12 (permalink)
Registered User
Thread Starter
 
Join Date: Oct 2006
Posts: 9
Location: Atlanta, GA
Car Year: 2004
Car Model: Forester
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by tre36 View Post
I'm with funkymonkey1002 on this.
I probably would look into a aluminum radiator or full steel at the very least for replacement.
Does anyone sell a good aftermaket aluminum radiator that is better?

I already ordered the OEM part again but maybe next time I'll do something else.

Chris
eyefly is offline   Reply With Quote
Old 12-09-2008, 11:13 AM   #13 (permalink)
Lifetime Supporting Member
 
tre36's Avatar
 
Join Date: Jan 2006
Posts: 2,884
Location: Kent, WA
Car Year: 2012
Car Model: camry se
Transmission: 6AT
Gallery: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
Default

I don't know for certain but I'll be looking into it for sure. I usually swap out the radiator hoses at 100K miles on all the cars I've own and after reading reports of crack Subaru radiators considering swapping the radiator too. It's an easy swap to do and I'll have all the hoses out and such anyway.
tre36 is offline   Reply With Quote
Old 12-09-2008, 11:20 AM   #14 (permalink)
The Seventh Sister
Administrator
Lifetime Supporting Member
 
pleiad7's Avatar
 
Join Date: Jan 2006
Posts: 27,162
Location: Sonoma County, CA
Car Year: 2004
Car Model: Forester XT Premium
Transmission: 4EAT
Gallery: 70
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 201 Post(s)
Feedback Score: 50 reviews
Default

FS CA: Koyo Radiator w/ Flex-a-lite dual fan setup.
__________________
-Silke
04 FXT PP PSM ~ "Subed"
98 Forester S ~ "Slynki"
pleiad7 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Problems, Maintenance, and Warranty

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 08:14 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.