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  #16  
Old 09-06-2018, 02:26 PM
92 SVX 92 SVX is online now
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Re: Might have a blown headgasket

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Originally Posted by Sean486 View Post
Nice. I may pick up one just for the hell of it. Necessary tools for a Subaru owner!
Its crazy how many "unnecessary" tools I have picked up since I bought this car because they really did become Necessary.

For example, I bought the tester you quoted, the vacuum refill linked to earlier in the post, and here is my youtube version, though I didn't make it into a real how to which I thought about doing but didn't. A/C vacuum pump, I resisted this one for a long time but when I moved to florida and found that I had to redo my a/c every 5 months because I had a negligible leak ( turned out to be the shrader valve in the R12 fitting) I decided I would get the pump and save money. I had already had the a/c manifold gauges.






I think I have a few other tools but I don't recall them at the moment.
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  #17  
Old 10-07-2018, 02:16 PM
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Re: Might have a blown headgasket

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Originally Posted by 92 SVX View Post


This is a how to to find out if the head gasket is leaking combustion gasses into the cooling passages.

Disregard the rattly noises, bad bearing in the power steering pump.

Here is the Tester I own and use, but any shop will have one, or any of this type will help.

The blue fluid when in contact with the carbon-monoxide (I believe is the gas that does it) turns green if just a small amount, or yellow if large leak.

https://www.amazon.com/UView-560000-...on+Leak+Tester

One question about using this or bleeding the system. If I take the radiator cap off and run the engine, the coolant will expand when it gets hot. How do you avoid coolant from eventually pouring out of top of the radiator?
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1996 Subaru SVX LSi, 149,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 0W40 and 5W30 High Mileage Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, StopTech Cross Drilled Front and Rear Rotors, Akebono ProACT Brake Pads
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  #18  
Old 10-07-2018, 02:17 PM
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Re: Might have a blown headgasket

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Originally Posted by Huskymaniac View Post
One question about using this or bleeding the system. If I take the radiator cap off and run the engine, the coolant will expand when it gets hot. How do you avoid coolant from eventually pouring out of top of the radiator?
with the cap open and idle you won't ever overflow it, the expansion is under pressure
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  #19  
Old 10-09-2018, 05:22 AM
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Re: Might have a blown headgasket

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Originally Posted by 92 SVX View Post
with the cap open and idle you won't ever overflow it, the expansion is under pressure
I thought the expansion causes the pressure when the cap is in place to constrain the expansion. Without the cap I would think the coolant would just freely expand.
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1996 Subaru SVX LSi, 149,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 0W40 and 5W30 High Mileage Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, StopTech Cross Drilled Front and Rear Rotors, Akebono ProACT Brake Pads
2005 Acura RL, 128,XXX miles, Redline D4 ATF, Mobil 1 0W40 and 0W20 High Mileage Oil Blend
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  #20  
Old 10-09-2018, 07:19 AM
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Re: Might have a blown headgasket

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Originally Posted by Huskymaniac View Post
I thought the expansion causes the pressure when the cap is in place to constrain the expansion. Without the cap I would think the coolant would just freely expand.
this isn't a simple explanation, as long as your not reving the engine which causes the waterpump to push harder the coolant does not overflow, so at idle with the cap off even up to "normal" operating temp you won't see boiling, which remember happens at 212F and the temp of the thermostat is 180 even on cars that use a 195 temp t-stat if your idling your not going to boil the water. The cap, and pressure is actually in place to increase the normal boiling point, so as mentioned normal boil is 212F when you enclose the system and let the pressure build (builds because as the water gets hotter the air starts separating out) the pressure forces the water not to boil, at 15 psi, typical oem coolant system the temp inside the engine can get to be 225 and still not boil the water. they also make high pressure systems for race cars, 30 to 50 psi F1 cars run at 265F all day long

here is a website that has some information.

http://automotivemileposts.com/garage/v2n15.html

Last edited by 92 SVX; 10-09-2018 at 07:23 AM.
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  #21  
Old 10-09-2018, 06:22 PM
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Re: Might have a blown headgasket

Used the tester. Head gasket is toast. But, also, yes, the coolant will overflow the radiator. I am guessing that exhaust was displacing coolant in the system.
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1996 Subaru SVX LSi, 149,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 0W40 and 5W30 High Mileage Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, StopTech Cross Drilled Front and Rear Rotors, Akebono ProACT Brake Pads
2005 Acura RL, 128,XXX miles, Redline D4 ATF, Mobil 1 0W40 and 0W20 High Mileage Oil Blend
2009 Toyota Venza, 78,XXX, Mobil 1 5W30 High Mileage Oil
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  #22  
Old 10-09-2018, 06:25 PM
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Re: Might have a blown headgasket

How much is a head gasket kit and how many hours for an experienced mechanic to do the job? Also, how much to get the heads machined? Based on what I saw tonight, the leak is bad and I am hoping they can be machined and assuming the will need to he machined if they can be machined.
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1996 Subaru SVX LSi, 149,XXX miles, Redline D4 ATF, Redline 75W90 gear oil, K&N HP-4001 Oil Filter, Mobil 1 0W40 and 5W30 High Mileage Oil Blend, Motul RBF600 Brake Fluid, AC Delco A975C Air Filter, NGK BKR6EIX-11 plugs, StopTech Cross Drilled Front and Rear Rotors, Akebono ProACT Brake Pads
2005 Acura RL, 128,XXX miles, Redline D4 ATF, Mobil 1 0W40 and 0W20 High Mileage Oil Blend
2009 Toyota Venza, 78,XXX, Mobil 1 5W30 High Mileage Oil
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  #23  
Old 10-09-2018, 09:50 PM
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Re: Might have a blown headgasket

Tony,

Try to give Tom Krynock a call on this (304) 582-6735. He can probably give you more accurate time and cost estimates, machining rates, etc.

The MLS head gaskets by Cometic are .066" thick and a 98mm bore for your stock engine. They run about $230.00 for a pair.

https://www.cometic.com/i-24766993-s...bore-each.html

Since the manifold and heads have to come off, this is the time to do the timing belt and water pump, plugs, PVC, etc if it hasn't been done. Not sure if your rubber vacuum manifold hoses are in good shape.

The complete engine reseal kit is available from Subaru, part number 10105AA060, is about $240.00. Check this post for a list of parts it contains. Cheaper than buying them individually.

http://www.subaru-svx.net/forum/show...47&postcount=6

Think this repair will be in the $2,000 range, maybe a little more. Probably pulling the engine is the easiest way.

Here is what I paid AWD, Inc. back in 2009 for my Polo engine work with 127,000 miles. YT was charging network members about $65.00/hr. back then.

Subtract about $1,000 for my exhaust work, front axles, etc. from the total.


Check with Jackie at Annapolis Subaru for great prices on parts.
(443) 851-1420.


You can always call me at 410-746-6770.

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Last edited by svxcess; 10-11-2018 at 11:12 AM.
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