No more head gaskets?? - Subaru Outback - Subaru Outback Forums
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post #1 of 12 (permalink) Old 02-10-2017, 08:00 PM Thread Starter
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No more head gaskets??

I was reading this in the March '17 Car & Driver when I noticed it's something Subaru is working on.



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post #2 of 12 (permalink) Old 02-10-2017, 08:39 PM
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That sounds so cool! I love the engineering concept. It would be interesting to know how far along they may be in testing and trials.

It doesn't sound like it's anything that will be seen any time soon by the consumer, though. I got the impression that this is first headed for the racing market. And it has to have a premium cost. Something that may not be worth it to the average consumer that may only need to deal with a blown head gasket after years of driving, if ever, where a race car driver may be worried about it every time he is out on the track.

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post #3 of 12 (permalink) Old 02-10-2017, 10:45 PM
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That's a full race engine based on the semi closed deck STI 2.0. The passenger engines in all other current North American Subarus are quite different and I don't think this could work.

My other Subarus are Subarus.


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post #4 of 12 (permalink) Old 02-11-2017, 07:24 AM
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Quote:
Originally Posted by patrikman View Post
That's a full race engine based on the semi closed deck STI 2.0. The passenger engines in all other current North American Subarus are quite different and I don't think this could work.
I think it is very possible. Just pull apart any old VW beetle engine and voila, no head gaskets.
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post #5 of 12 (permalink) Old 02-11-2017, 07:50 PM
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...having lost a HG on our OB and knowing that Subaru is infamous for HG failures, this could be what they need.

I used to drive the old school beetles...had three during my college and university years. Never had a head problem but the oil cooler sat over...I believe...cylinder #3 and as a result of that extra heat they were prone to drop the spark plug into the cylinder...not fun on a busy highway...

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post #6 of 12 (permalink) Old 02-12-2017, 05:30 AM
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Copper o-rings are not new. They've been used in high output engines for years.

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post #7 of 12 (permalink) Old 02-12-2017, 12:00 PM Thread Starter
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Copper o-rings are not new. They've been used in high output engines for years.
You're right, o-rings are not new but, it's not the o-rings that the story is about, it's the valves that release too much compression.

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post #8 of 12 (permalink) Old 02-12-2017, 10:07 PM
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I think it is very possible. Just pull apart any old VW beetle engine and voila, no head gaskets.
Lolz

My other Subarus are Subarus.


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post #9 of 12 (permalink) Old 02-13-2017, 02:22 PM
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I believe Subaru eliminated the head gasket problem on the FB engines by removing coolant passages that required coolant to flow directly between the block and the head. Electrolysis slowly ate away at the gasket and caused the failures. Please correct me if I'm wrong.
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post #10 of 12 (permalink) Old 02-16-2017, 05:40 PM
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You're right, o-rings are not new but, it's not the o-rings that the story is about, it's the valves that release too much compression.
I wonder how many miles before the sensors get "carboned up"?

Seems like a silly set up.

How about instead of a overly complicated electronic set up, they just machine the surfaces to a better finish, add MLS HG's and install head studs. Problem solved.


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