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Old 07-20-2010, 10:44 AM   #1
presidential
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Default '97 EJ25D BHG questions

I know this has been beaten to death here and I didn't find an exact answer when I was searching so here goes.

185,000 mile old '97 EJ25D DOHC Legacy comes into the shop with a dead cylinder. Tons of coolant in the dead cylinder itself. If the vehicle were mine, I'd choose to build some hybrid monster but this vehicle belongs to a 70 year old guy who wants it to be stronger than it was.

So when we rebuild this thing, we're looking to put stronger head bolts and stronger head gaskets in this thing. What do you recommend? I've only messed with factory turbo stuff, I honestly have no idea what the N/A motors like for longevity.

Thanks for your opinions!
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Old 07-20-2010, 11:48 AM   #2
Patrick Olsen
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If it has the original head gaskets, then the updated head gaskets the Subaru has spec'd for the EJ25D for the past few years are stronger. And there's absolutely no need for stronger head bolts.
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Old 07-20-2010, 12:11 PM   #3
presidential
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Just new OEM bolts will do, correct?
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Old 07-20-2010, 12:15 PM   #4
iluvdrt
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OEM new gasket and head bolts. Just make sure the holes are clean before installing the bolts. ARP does make head studs for the motor and they will probably be cheaper then buying new bolts.
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Old 07-20-2010, 12:28 PM   #5
presidential
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Thanks for the advice. Not really used to the N/A stuff, this helps out a lot.
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Old 07-20-2010, 12:39 PM   #6
69subaru360
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If it blew the gasket bad enough to get coolant in the cylinder, the engine is scrap metal. Don't even try to fix it or it will come back on you.

If the old guy wants it to be stronger than it ever was, swap in an EJ22. 95 EJ22 from an automatic car is a direct replacement everything is the same. 96-98 EJ22 from an automatic you just need the matching single port exhaust y pipe. All the plugs are the same, the 2.5 ecu will run it fine.

If you want to go all out reseal the replacement 2.2 with a new gasket set, put in a new timing belt and it will run forever.

I've done tons of these swaps for people and it works great. They should have built them that way new.
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Old 07-26-2010, 12:05 AM   #7
22BeaSTI
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theres a special additive subaru sells for the coolant system. definately buy and install with coolant after rebuild...
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Old 07-26-2010, 12:08 AM   #8
69subaru360
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You don't need the additive with new gaskets. It's just rebranded stop leak.
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Old 07-26-2010, 12:03 PM   #9
GEE-OTTO
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Rebuild the engine per stock specs that will be fine,. hes 70 something can he really out live the Subbue ???
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