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  #1  
Old 29-09-2013, 04:05 PM
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SpecB SpecB is offline
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Default HG gone?
Took the old bug out for a run today and it appears that the new radiator cap has not fixed my coolant issue so I think it could be a bit more sinister! What do you guys think?

Spec:
Forged 2.5 with cometic gaskets & ARP head studs, AVCS heads. MD321x turbo (T+) running 1.5/6 bar 440bhp
Symptoms:
Coolant in overflow rising after driving and not returning to original level on cooling.
Bubbles in coolant overflow tank when running (warm) and after driving for a few minutes.
Expansion tank level fallen once cooled - no loss of coolant it's all the the overflow just displaced by air.
No obvious exhaust smell in coolant, coolant looks slightly dirty but no oil film/ residue.
No obvious contamination of oil.
Possible slightly excessive moisture/steam from exhaust but car has been standing for over 2 months.
Car runs perfectly.
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
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Old 29-09-2013, 04:18 PM
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Banstead Stig Banstead Stig is offline
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The bubbling seems to be the most consistent symptom of Subaru engines with HG failure from all the threads I have seen on it.

The other "classic" symptoms seem to sometimes materialise, but not consistently.
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  #3  
Old 29-09-2013, 05:04 PM
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Hongkongfooi Hongkongfooi is offline
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Two months standing!? What's the point in having it?

Thought you knew it was hg?
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  #4  
Old 29-09-2013, 07:42 PM
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MIDLIFE MIDLIFE is offline
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Sniff test?
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Old 29-09-2013, 08:06 PM
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C. J. C. J. is offline
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Not commenting as you do the opposite any way !
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  #6  
Old 29-09-2013, 08:20 PM
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Steve_PPP Steve_PPP is offline
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Quote:
Originally Posted by Hongkongfooi View Post
Two months standing!? What's the point in having it?
To be fair if I had a Legacy Spec B on the drive i'd get in that all the time and use my bugeye even less than I do now as well!

Can't help you with the HG question mate as i'm no expert, but hope it doesn't work out too much of a pig to fix!
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  #7  
Old 29-09-2013, 08:21 PM
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SpecB SpecB is offline
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What do you reckon though Chris time to pull the engine and have it checked?
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
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  #8  
Old 29-09-2013, 08:24 PM
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SpecB SpecB is offline
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Quote:
Originally Posted by Hongkongfooi View Post
Two months standing!? What's the point in having it?

Thought you knew it was hg?
I just haven't had the chance to use the car over the past few moths what with the kids etc. also the Legacy is a hell of a capable car so I've not actually missed the performance that much, even though the impreza is significantly faster in comparison!

I swapped the Rad cap for a higher pressure one and it appeared to cure the symptoms must have just been a coincidence.
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
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  #9  
Old 30-09-2013, 09:29 AM
harvey05 harvey05 is offline
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you can test the head gasket with test kit brent at smd can do it
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  #10  
Old 01-10-2013, 08:17 PM
Sti mayhew Sti mayhew is offline
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Quote:
Originally Posted by harvey05 View Post
you can test the head gasket with test kit brent at smd can do it
Littlehampton might be a bit far for a head gasket test by Brent in newhaven!!!
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  #11  
Old 02-10-2013, 06:18 AM
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I'm going to get a sniff test done locally then will decide on what to do based on the results! Should be ok to drive to Brent to get the work done but I can get a sniff test done around the corner!
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
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  #12  
Old 02-10-2013, 10:31 AM
Sti mayhew Sti mayhew is offline
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Yes exactly
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