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Old 08-20-2004, 07:47 AM   #1
mallion
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Subaru Stars what is better a ea82t or a ea81t?

I am looking for more power for my subie and was thinking of putting in a ea81t or a ea82t.
which is better? not so much in terms of power but more in the way of reliability. I have heard that the ea81t blows head gaskets preety easily but it does not have a cam belt to break(does it?). Anything esle I should know about when looking at these engines?
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Old 08-20-2004, 11:32 AM   #2
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Biggest issue with EA81T is that they are tough to find and just as tough to find parts for. EA82 is just as, if not more reliable.. I don't get everyones fear of timing belts.. I have yet to break one.. its a little thing called maintenance..

Plus, EA82s are a lot more abundant and you can use stuff from NA EA82s on Turbo EA82s
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Old 08-20-2004, 12:42 PM   #3
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I'd build me a EA-82t, grab a carb'ed oe SPFI block (higher comp), and use a stand alone EMS. you'd be set
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Old 08-20-2004, 01:37 PM   #4
Calebz
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SPFI block + Turbo stuff = BOOM!!

Ask will.. his ran like a raped ape.. but only for 24k miles before it ate a piston.

Carb block on the other hand.. well.. Miles has done it, and I will be done with it in the next 2 weeks or so.. I'll let you know.
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Old 08-20-2004, 09:12 PM   #5
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Quote:
Originally Posted by Calebz
SPFI block + Turbo stuff = BOOM!!

Ask will.. his ran like a raped ape.. but only for 24k miles before it ate a piston.

Carb block on the other hand.. well.. Miles has done it, and I will be done with it in the next 2 weeks or so.. I'll let you know.
That thing ran like a friggin cheetah on 'NAWWWZzzz' on racing gas. Pump gas it was REALLY good in the low end and mid range...but past 5200 nothing but detonation...and that killed it. 24k miles, rings were going and the exh valve on #1 had a melt down. 8~8.5 compression is a good performance compromise.

Quote:
Originally Posted by dusktilldawn
on the broken timing belt thing, is the ea82t an interference engine?
NON-INTERFERENCE engine design...stock that is. change the pistons and cams (lift/duration) and it might be an issue.

Quote:
Originally Posted by subyluvr2212
Agreed.

I'll state the obvious. An EA82T is very reliable and can produce surprising HP numbers, but you gotta keep em cool, or the heads will crack like eggshells...
It IS reliable when taken care of properly....synthetic oil, and keeping the oil and engine coolant COOL. 180 deg t-stat, and oil cooler.

The stock internals can handle 240~250 hp.
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Old 08-21-2004, 03:54 AM   #6
mallion
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Quote:
Originally Posted by WJM
It IS reliable when taken care of properly....synthetic oil, and keeping the oil and engine coolant COOL. 180 deg t-stat, and oil cooler.

The stock internals can handle 240~250 hp.
250hp on standard internals? realy!?
Does the ea82t come with a oil cooler or does a decent one need to be suplied?
Nothing special to do to keep the engine cool? just watch the temp guage and drive accordingly?
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Old 08-20-2004, 02:00 PM   #7
DerFahrer
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Quote:
Originally Posted by Calebz
I don't get everyones fear of timing belts.. I have yet to break one.. its a little thing called maintenance..
Agreed.

I'll state the obvious. An EA82T is very reliable and can produce surprising HP numbers, but you gotta keep em cool, or the heads will crack like eggshells...
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Old 08-21-2004, 04:00 AM   #8
mallion
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Quote:
Originally Posted by subyluvr2212
Agreed.

I'll state the obvious. An EA82T is very reliable and can produce surprising HP numbers, but you gotta keep em cool, or the heads will crack like eggshells...
The head gaskets or the actual heads them selves (or both)?
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Old 08-21-2004, 04:08 AM   #9
mallion
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Okay I guess I'll be going for the ea82t then.
The car I want to put it in though is a 83 wagon which runs a ea81 as standard, will the ea82t bolt straight onto the existing engine mounts?
I just realised this a major assumtion I have made.
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Old 08-21-2004, 08:33 AM   #10
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In europe, the oil coolers were standard...even on most non turbo models. So...you need to find a setup. We (Folger SUBARU) sell the oil cooler adapters. they are $30.99+shipping.

As for engine cooling...find a twin row rad, either new or used (if used, FLUSH well) and that should keep the engine happy, and make sure to install a 180 deg thermostat of high quality.

The stock OE turbo headgaskets are the best things you can use for these engines....unless you use a copper one and do it right.

The EA82 in an EA81 car....well, search on usmb.net for all the right stuff to make that happen...as Ive not dont that one.
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Old 08-20-2004, 06:19 PM   #11
dusktilldawn
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on the broken timing belt thing, is the ea82t an interference engine?
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Old 08-20-2004, 09:32 PM   #12
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are the intake runners/ports on the ea82t completely seperate? i was thinking of SDS EFI, but they say they do not support engines with siamese intake ports. they do not have any suby 1.8 motors listed as being 'compatible', but that just might mean that no one has done it yet on an ea82t.. or are you all getting big power out of the OE management? cause if i can the oe, i won't spend $$ on a standalone
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Old 08-20-2004, 09:53 PM   #13
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Quote:
Originally Posted by dusktilldawn
are the intake runners/ports on the ea82t completely seperate? i was thinking of SDS EFI, but they say they do not support engines with siamese intake ports. they do not have any suby 1.8 motors listed as being 'compatible', but that just might mean that no one has done it yet on an ea82t.. or are you all getting big power out of the OE management? cause if i can the oe, i won't spend $$ on a standalone
The intake is separate, but the exh is siamese. The port is PLENTY big on that side...the ony downside is taht there is no headers (except for the limited TWE run for now) readily avalible.

You cannot get BIG numbers (250+) with the stock system. The dizzy is the main limiting factor in power...I think the stock fuel management is ok...but not for 250+ either.

Either way, staying with the stock system and playing with it, you could have a nice reliable 190-210 hp setup, depending on how you build it and what you use.
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Old 08-21-2004, 08:59 AM   #14
dusktilldawn
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is that just a sandwich adapter that fits between the pump and the oil filter? is it a specific piece to the engine, ie no 'universal' type kit?
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Old 08-22-2004, 10:21 PM   #15
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Quote:
Originally Posted by dusktilldawn
is that just a sandwich adapter that fits between the pump and the oil filter? is it a specific piece to the engine, ie no 'universal' type kit?
it works on all other engines that have the same threads....IE the Ford engines and similar.

it is a universal part....but there is no kit avalible yet. Seeing as how different people have different plans and setups, i dont offer a kit, just the adapter.
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Old 08-26-2004, 11:23 PM   #16
dusktilldawn
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what kind of money would a new dual core rad set me back? what is the stock hp figure for an ea82t from an 87 gl10? and what kind of numbers should I see when running a compression test?
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Old 08-27-2004, 06:21 AM   #17
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Quote:
Originally Posted by dusktilldawn
what kind of money would a new dual core rad set me back? what is the stock hp figure for an ea82t from an 87 gl10? and what kind of numbers should I see when running a compression test?
radiators.com i believe has then....i do not remember the price...but it was less than 150 shipped.

115 stock HP.

anything between 110-160 is good...as long as each cyl is within 10 psi of each other, its all good.
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