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 Post subject: 2.5L head gasket
PostPosted: Sat Apr 08, 2017 6:19 am 
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Joined: Tue Oct 28, 2014 8:06 pm
Posts: 35
So my car is over heating, I believe it is the head gaskets, one is leaking externally oil or the oil pressure sensor is leaking, making it a little harder to tell on the passenger. On the driver side there is a very small amount of oil. With the car running I cam see bubbles now and then in the over flow tank and I think heavy moister in the exhaust. But how do I now which cylinder head is leaking? And can they be changed in the car or remove the engine?


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 Post subject: Re: 2.5L head gasket
PostPosted: Sun Apr 09, 2017 5:11 pm 
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I'd recommend pulling the spark plugs and see which plug looks different.

The headgaskets can be changed with the engine in the car, but it's a pain in the butt.

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 Post subject: Re: 2.5L head gasket
PostPosted: Sun Apr 09, 2017 5:18 pm 
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Joined: Tue Oct 28, 2014 8:06 pm
Posts: 35
So far I've taken the passenger side head off, in the car and know I an working on Taking the drivers side off. I forgot to mention that this is the 2.5 DOHC engine. I am also curious about how the FAL-PRO MLS head gasket does that's the best the auto parts store can order in are they any good? Or should I order a different one off line?


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 Post subject: Re: 2.5L head gasket
PostPosted: Sun Apr 09, 2017 5:22 pm 
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Thank you josh, it's been fun so far the passenger side was not to bad the spark plugs both looked wet and inside the cylinder looks like it was damp. I am just assuming that you should probably change both had gaskets at the same time is this true?


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 Post subject: Re: 2.5L head gasket
PostPosted: Sun Apr 09, 2017 5:32 pm 
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If the other side isn't leaking it's not mandatory to change it.

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Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


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 Post subject: Re: 2.5L head gasket
PostPosted: Wed Apr 12, 2017 4:48 pm 
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Joined: Tue Oct 28, 2014 8:06 pm
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I am having the heads milled and then I am looking at putting the heads back on with Fel-Pro 26167 PT MLS perma tex head gaskets any thoughts on these they sound good.


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 Post subject: Re: 2.5L head gasket
PostPosted: Thu Apr 13, 2017 7:18 am 
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Joined: Mon Aug 31, 2009 9:09 pm
Posts: 1204
Location: Rochester, WA
Use the Subaru OEM gaskets. The Fel-Pro are known to fail again posthaste.

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 Post subject: Re: 2.5L head gasket
PostPosted: Thu Apr 13, 2017 1:23 pm 
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Location: Lakewood, Wa 98439
thatsme87 wrote:
I am having the heads milled and then I am looking at putting the heads back on with Fel-Pro 26167 PT MLS perma tex head gaskets any thoughts on these they sound good.


Always choose oem unless you're putting together a fun car then cometic is what I would use.

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 Post subject: Re: 2.5L head gasket
PostPosted: Fri Apr 14, 2017 5:33 pm 
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Very cool I will do that thank you I just got the heads back so I will be putting it back together hopefully this weekend


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 Post subject: Re: 2.5L head gasket
PostPosted: Mon Feb 26, 2018 12:54 am 
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Joined: Fri Mar 25, 2016 2:48 pm
Posts: 191
Location: Beautiful Downtown Goode, VA
question on the head gasket....I read on NAUSIOC :) some of these guys that are building really high power 400 hp motors and up are using pure copper head gaskets...any experience with those and are they recommended?


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 Post subject: Re: 2.5L head gasket
PostPosted: Mon Apr 09, 2018 5:57 pm 
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I know this is an old post, but regarding the pure copper head gasket, that's BS. Copper has a melting point of 1,984°F, so if copper is being used it's an alloy and/or has steel cylinder sealing gaskets.

What did Nasioc say the benefit of copper was?

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

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 Post subject: Re: 2.5L head gasket
PostPosted: Wed Apr 11, 2018 10:05 pm 
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Joined: Mon Feb 28, 2011 6:08 am
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Location: 86406
cj91legss wrote:

Always choose oem unless you're putting together a fun car then cometic is what I would use.


+1 on this IMO. I hate to say, with the EJ25D, if one gasket has gone, the other probably will too. I haven't heard of anyone having enough luck with that specific engine replacing one side and being good to go for a while.

I've been down the same road. Great engine except for that one freaking thing.

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 Post subject: Re: 2.5L head gasket
PostPosted: Mon Apr 30, 2018 8:51 pm 
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Joined: Mon Apr 16, 2007 12:55 am
Posts: 89
Location: Near Seattle wa
Legacy777 wrote:
I know this is an old post, but regarding the pure copper head gasket, that's BS. Copper has a melting point of 1,984°F, so if copper is being used it's an alloy and/or has steel cylinder sealing gaskets.

What did Nasioc say the benefit of copper was?


This may help.

http://scegaskets.com/wp_super_faq/give ... ad-gasket/


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 Post subject: Re: 2.5L head gasket
PostPosted: Tue May 01, 2018 5:41 pm 
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Thanks for sharing.

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


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