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Author Topic: HG Failed, Guess Who  (Read 18388 times)

Offline tenpenny

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Re: HG Failed, Guess Who
« Reply #60 on: February 03, 2017, 08:21:40 pm »
I've read that it may be related to the thermostat location/design, which allows higher temps that cooks the gaskets.

Who knows?  One thing for sure, if you don't live in Kingston, you'll have to do your head gaskets.

I'm off to find a bottle of scotch.


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Offline makuribu

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Re: HG Failed, Guess Who
« Reply #61 on: February 04, 2017, 10:18:03 am »
Quote from: tenpenny on February 03, 2017, 08:21:40 pm
I've read that it may be related to the thermostat location/design, which allows higher temps that cooks the gaskets.

Who knows?  One thing for sure, if you don't live in Kingston, you'll have to do your head gaskets.

I'm off to find a bottle of scotch.


And your whisky costs less. If you drink enough Blue Label you'll offset the cost of those three HG jobs.

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Offline tenpenny

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Re: HG Failed, Guess Who
« Reply #62 on: February 04, 2017, 11:00:14 am »
There's your problem, Harry!


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Offline tenpenny

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Re: HG Failed, Guess Who
« Reply #63 on: February 07, 2017, 02:12:35 pm »
Does the 6cyl have as many HG issues as the 2.5?

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Offline blur911

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Re: HG Failed, Guess Who
« Reply #64 on: February 07, 2017, 02:16:22 pm »
Quote from: tenpenny on February 07, 2017, 02:12:35 pm
Does the 6cyl have as many HG issues as the 2.5?

They don't for the most part.  The SVX engine is apparently not bad.  The 3.0 like I have seems to have them sometimes go later in life (possibly due to not using coolant conditioner).  I don't know much about the 3.6.
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Offline Blueprint

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Re: HG Failed, Guess Who
« Reply #65 on: March 31, 2017, 06:38:14 pm »
Some news from the neighbours, who own two Subies. The replacement engine in the previous-gen Outback has started to drink coolant (engine installed this winter), and the leased 2 year old Crosstrek has its "low oil" light coming on halfway through an oil change interval. Neighborette is asking for car advice, so I expect un-Subing next door.
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Offline tenpenny

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Re: HG Failed, Guess Who
« Reply #66 on: March 31, 2017, 07:13:47 pm »
Quote from: makuribu on February 04, 2017, 10:18:03 am
Quote from: tenpenny on February 03, 2017, 08:21:40 pm
I've read that it may be related to the thermostat location/design, which allows higher temps that cooks the gaskets.

Who knows?  One thing for sure, if you don't live in Kingston, you'll have to do your head gaskets.

I'm off to find a bottle of scotch.


And your whisky costs less. If you drink enough Blue Label you'll offset the cost of those three HG jobs.

Did you get that bottle?  When can I have some, anyway?  Oban or lagavulin for the women's hockey game tonight?  I don't know what to do.


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Offline johngenx

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Re: HG Failed, Guess Who
« Reply #67 on: March 31, 2017, 08:11:39 pm »
Quote from: Blueprint on March 31, 2017, 06:38:14 pm
Some news from the neighbours, who own two Subies. The replacement engine in the previous-gen Outback has started to drink coolant (engine installed this winter), and the leased 2 year old Crosstrek has its "low oil" light coming on halfway through an oil change interval. Neighborette is asking for car advice, so I expect un-Subing next door.

The 2.0L engines seem to be oil consumers.  Subaru has long made engines with large tolerances - though our own EJ25 has used minimal oil in it's life (even now with the HG leaking) it's not uncommon for them to need a top-up between changes.  That said though, the 2.0L seems to be on the higher end of oil consumers as Subaru engines go.

Coolant consumption in the Outback is a BAD sign.  Ugh, 99% certainty that the head gasket is on it's way out.
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Offline dirtyjeffer

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Re: HG Failed, Guess Who
« Reply #68 on: March 31, 2017, 09:28:43 pm »
Quote from: johngenx on March 31, 2017, 08:11:39 pm
Coolant consumption in the Outback is a BAD sign.  Ugh, 99% certainty that the head gasket is on it's way out.
yup...only two places it can go...on the ground (exterior leak somewhere) or in the engine (either crankcase or combustion chamber, depending on where the HG failure is)...if there's any coolant puddles under the car in the garage, that's a good sign as it might just be a bad hose, or perhaps a leaking rad (not good, but certainly better than a head gasket failure)...if there's no coolant puddles under it, have them look at the oil dipstick...if it's milky, it's leaking into the crankcase (which can bury that engine rather quickly), otherwise it will burn it in the combustion chamber.
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Offline rrocket

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Re: HG Failed, Guess Who
« Reply #69 on: March 31, 2017, 09:47:17 pm »


Quote from: Cadure on February 12, 2017, 10:30:12 pm
s.  Having said that, not sure on the new 2.0T DI motor.

I know the engine in the FRS/BRZ is stout. After the guys from Accelerated Performance made one of the first turbo kits for it, they just kept boosting it until it blew up. They were well into the 500s. And it was a piston ring/land failure.



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Offline Fobroader

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Re: HG Failed, Guess Who
« Reply #70 on: March 31, 2017, 10:22:43 pm »
Wouldn't a set of aftermarket pistons easily take care of the ring land problem?? Same with the head gasket issue??

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Offline johngenx

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Re: HG Failed, Guess Who
« Reply #71 on: March 31, 2017, 10:48:12 pm »
Quote from: rrocket on March 31, 2017, 09:47:17 pm

I know the engine in the FRS/BRZ is stout. After the guys from Accelerated Performance made one of the first turbo kits for it, they just kept boosting it until it blew up. They were well into the 500s. And it was a piston ring/land failure.


The early Crosstreks have the FB20 and the FRS has the FA20B.  Pretty much completely different engines.  The 2017 Imprezas and Crosstreks have the FA20, which is supposedly the FA20B without D4S and AVCS.  But, I'd gamble that the plain-jane FA20 is built differently than the FA20B.

The FB series engines - FB20B and FB25B don't have a particularly good rep for build integrity.  The FB25B had some early issues and I'm not sure they're really sorted, especially as mileage accumulates.  The FB20B is showing similar weakness.
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Offline rrocket

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Re: HG Failed, Guess Who
« Reply #72 on: March 31, 2017, 11:26:28 pm »


Quote from: johngenx on March 31, 2017, 10:48:12 pm
But, I'd gamble that the plain-jane FA20 is built differently than the FA20B.



I don't know for sure. But Subaru is a small company and I'm not convinced that the basic internals would be different.



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Offline johngenx

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Re: HG Failed, Guess Who
« Reply #73 on: March 31, 2017, 11:53:40 pm »
Yeah, I'm not sure at all of the differences between the FA20 and FA20B.  The "B" of course has the Toyota D4S system, and originally the engine was designed in concert with Toyota and it's my understanding that Toyota played a key role in the head design so it would work with  both their D4S and the Subaru AVCS variable valve timing system.

Given that the FA20 has no D4S, I suppose that the head is different, and if so, perhaps other changes as well.

I do know that I'd much rather have either FA-series engine than any FB engine.  The new block and bottom end of the FA20B are fantastic, and the D4S system of course is pretty much the best DI style system on the market.
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Offline wing

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Re: HG Failed, Guess Who
« Reply #74 on: April 01, 2017, 10:44:30 am »
Lol ask Norm how boosting went for him.  2 engines.... Later...

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Offline rrocket

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Re: HG Failed, Guess Who
« Reply #75 on: April 01, 2017, 04:43:17 pm »
Quote from: wing on April 01, 2017, 10:44:30 am
Lol ask Norm how boosting went for him.  2 engines.... Later...

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Wasn't the engines fault IMO...

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Offline johngenx

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Re: HG Failed, Guess Who
« Reply #76 on: April 01, 2017, 10:24:50 pm »
Was it the tunes?  Any of the boosted FA20B failures I've heard of were issues with improper tunes - usually a lean-out issue.
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