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Old 08-08-2008, 06:52 PM   #1
charliew
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Member#: 125304
Join Date: Sep 2006
Location: Crawford, TX.
Default Blown headgasket test kit

It took awhile but I found a blown headgasket test kit and ordered one.
I found it on Thermagasket's site. 69.00 plus I ordered a extra bottle of solution for another 12.00.

http://www.rxauto.com/

To me it is easier to check the coolant than do the compression and leakdown and wonder if it's only leaking on high boost.
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Old 08-08-2008, 07:11 PM   #2
Dom'sGurl
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Chapter/Region: NWIC
Location: Lake Stevens
Vehicle:
2006 Legacy GT
Blue

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It is very handy to have this kit. However, it is not always going to be correct.
I pulled my hair out for two weeks trying to figure out if I had a blown headgasket.
Compression test, leakdown test, coolant pressure test,coolant hydrocarbon test etc etc.

all of them said "no leak". however, when I pulled the engine out it was obviously a blown headgasket. Sometimes a headgasket can leak in ONE direction only (cylinder to cooling jackets and not the other way) and only under the high pressures found during combustion.
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Old 08-08-2008, 07:17 PM   #3
charliew
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Yes but that would put exhaust gas in the coolant. You probably know more about this than me though as it's a new thing to me.
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Old 08-08-2008, 07:23 PM   #4
Dom'sGurl
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Blue

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yeah, normally you would think so.

But apparently it must not have been enough because it wouldn't trigger the hydrocarbon test.
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Old 08-08-2008, 07:29 PM   #5
charliew
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Every since we put the new motor in wittmer 25's car and it pucked the coolant twice we have worried about the headgaskets. It seemed to be ok after we made a bigger overflow can.
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Old 08-08-2008, 11:27 PM   #6
mick_the_ginge
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Location: Portland, Oregon
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2003 Sleeved 2.5
Oil Dry Sump Goodness

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Nice find, for that price I am going to get one
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Old 08-11-2008, 06:02 PM   #7
charliew
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Default

I ran into a coworker from a few years ago. He's a old hot rodder and a full time forklift mechanic and he also said the hydrocarbon tester sometimes wouldn't show up a headgasket leak. He also said you could save the used solution if you just sucked fresh air back through it, even if it had turned yellow it would go back to blue and put it in a glass jar to use the next time. Just don't put it back in with the virgin stuff to save.
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