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EA81 engine year?


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93 replies to this topic

#26 GeneralDisorder

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Posted 05 June 2006 - 01:40 PM

That's what we are trying to determine - the pattern.

Actually it seems that they may have "rolled over" - hit the 1,000,000 mark sometime in '82. Hence the 01/82 of 931272, and the 04/82 of 009899.

GD

#27 Sweet82

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Posted 05 June 2006 - 04:35 PM

It doesn't seem to be- I know it has solid lifters, and there are no golden stickers. I wonder if it's a factory replacement block?
Some other numbers-
From the 82 block, built 4/82- 009899. Nice low number there.


Do we know if this is an original motor?:confused:

#28 4x4_Welder

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Posted 06 June 2006 - 08:09 PM

That one was an original motor, I bought it from the original owner, only about 80k on the clock, the car rotted out on me.

#29 GeneralDisorder

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Posted 07 June 2006 - 09:02 PM

Updated my list - check out page 1.

GD

#30 Sweet82

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Posted 08 June 2006 - 11:21 AM

Ok - so to summarize (I'll update as people post):


Engine serials / build dates:

- EA81

799337 - 07/81
931272 - 01/82
009899 - 04/82
300305 - 05/83
460419 - 01/84
809067 - 05/85

GD

I was trying to see if this small sample would pass the "does this make sence test".
I was wondering if production quantities based off our limited numbers seemed consistant/reasonable.
----------------Months----Units-----Units/month---Units/day ---Units/hour

799337 - 07/81
931272 - 01/82--6--------131,935---21,989.17-----732.97------30.54
009899 - 04/82--4---------78,627---19,656.75-----655.23------27.30
300305 - 05/83-13--------290,406---22,338.90-----744.63------31.03
460419 - 01/84--8--------160,114---20,014.25-----667.14------27.80
809067 - 05/85-16--------348,648---21,790.50-----726.35------30.26

What I see is relatively consistent production numbers when our sample is broken down into months.
This would make sence. When you break our numbers into production/day you begin to see the capacity of the factory.
When you break it into an hourly production it you realize just how fast these motors roll off the line.
If your really get board, you'll see they averaged around a half a motor a minute!
Overall I think our small sample seems to be reasonable.

For what that's worth,
Glenn
82 SubaruHummer
84 GL Mad Max
01 Forester

#31 IdahoJak

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Posted 08 June 2006 - 03:14 PM

My '85 Hatch GL has a replacement engine in it, but the owner gave me the original engine: Build date 11-84, original engine S.N. EA81 665918

#32 GeneralDisorder

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Posted 08 June 2006 - 08:18 PM

Thanks Jak. It's on the list.

GD

#33 Sweet82

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Posted 12 June 2006 - 09:54 AM

Ok,

Here is another.

This is from Mad Max

Build Date 10/83
S/N 034828


It would appear this is also an original engine.
It seems to fit in with numbers and production patterns we have.

Glenn,
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#34 GeneralDisorder

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Posted 13 June 2006 - 11:36 AM

You sure you didn't typo that number? Seems to not fit well to me....

GD

#35 Sweet82

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Posted 13 June 2006 - 04:04 PM

Your right, the leading 0 needs to be in a different spot to make it fit well.

340k would fit 34k would not. It could be this engine is not an original?
It's history is not known.
If my math is right this motor would have been produced in June of 1982?

#36 SuBrat84

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Posted 02 August 2006 - 04:22 PM

EA81 588506 - 07/1984 Subaru Brat Should be original.
Can anyone tell me the sure fire way to check if it's solid or hydro lifters? Thanks.

#37 SuBrat84

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Posted 02 August 2006 - 04:33 PM


Build Date 10/83
S/N 034828


That would fit a lot better if the build date was 10/82. Is this a possibility, but you were accidently told 10/83 because the CAR would be an '83?

#38 Sweet82

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Posted 10 August 2006 - 05:13 PM

That would fit a lot better if the build date was 10/82. Is this a possibility, but you were accidently told 10/83 because the CAR would be an '83?


I thought the same thing, but the car is an 84 which would make the build date right on. From the stats we have gathered so far, it has to have had a motor swap at some point. I'll see it this weekend and I can check the vin and see if the 10th digit is valid for an 84.
I don't know the history of the car. I bought it for $40 and didn't ask questions.

#39 GeneralDisorder

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Posted 10 August 2006 - 07:49 PM

EA81 588506 - 07/1984 Subaru Brat Should be original.
Can anyone tell me the sure fire way to check if it's solid or hydro lifters? Thanks.


Just tried to add that to the list, but I am no longer able to edit my list post..... mods?

Unless it's an automatic, it's solid. Look for the gold stickers on the valve covers that say "Do not adjust valves". Or remove the valve cover and look at the pushrod - solid lifters have aluminium pushrods with steel caps, and hydro lifters have steel pushrods with no caps (smooth).

GD

#40 IdahoJak

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Posted 25 August 2006 - 06:38 PM

My '86 Hatch GL 4x4, built 01/86, engine sn: 015963

#41 bgd73

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Posted 28 August 2006 - 01:07 PM

I saw some ea82 posted- not sure if this what you want.
07/92 107177 - with a 7 legged spider in the bumper :lol:
Posted Image

#42 TomRhere

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Posted 03 September 2006 - 10:22 AM

My turn.....

'86 BRAT Build date unknown at this time, may have that tag here somewhere....... Body has gone to scrap yard.
VIN - JF3AU53B3GE500148
Eng ID - 912990

'86 BRAT 12/85
VIN - JF3AU53B2GE501078
Eng ID - 428702

Pretty darn sure this is a replacement engine due to the numbers difference, and especially after reading GD's note on the difference in pushrods. The ones in this engine have a cap on them = solid lifters.

#43 Loyale 2.7 Turbo

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Posted 16 February 2007 - 02:19 PM

That's what we are trying to determine - the pattern.

Actually it seems that they may have "rolled over" - hit the 1,000,000 mark sometime in '82. Hence the 01/82 of 931272, and the 04/82 of 009899.

GD


Oh!... :eek: ...I didn`t knew that... But EA81`s where made untill... ?

I saw some Subies from the 90`s that came with the EA81, and EA71... and maybe the EA65? -I`m not Sure-

I say that `cos in my country, subaru did sell the Loyale Shaped model, with just 1.3 L (economic model, just 4 gears FWD) 1.6L and 1.8L untill 1994, and also Hatchbacks and Brats did come with 1.6L and 1.8L Engines... I`m not sure, so the Question I got is:

What is (or Was, I Guess) the Last Date of Manufacturing those EA Engines? (all, EA65, EA71, EA81, and EA82?)

Thanx! :)

#44 NV Zeno

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Posted 02 June 2007 - 05:56 PM

Americans: That's possible that the smaller, older-tech engines like the EA81/71 were still built and installed into the "EA82 era" cars. Someone in Israel (IIRC) wrote of a his Loyale-bodied wagon having a EA71 (1600) engine, and now we have another example, this time in the Central/South America market.

I'm thinking that the EA82 was introduced to the US market (in the beginning anyway) because of stricter emissions standards and America's general need for more power. Example: look how long the Volkswagen flat 4 was manufactured for new cars outside the US until being completely discontinued.

( I know I had more I wanted to add, but I've lost my train of thought:banghead: )

My 2 bucks

#45 waimaks

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Posted 02 June 2007 - 11:38 PM

I can vouch for ea71's in ea82 style vehicles. It happened. Not too bad little cars either.

#46 RelicGL

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Posted 05 June 2007 - 10:07 PM

'83 GL Wagon, build date 11/82, EA81 stamped on passenger cylinder case front top, bellhousing has a sticker: T81PA2H-BE followed by another sticker with 039802 [I assume that's the number we want].

Inside of hood has 109ci and valve adjustment specs with engine cold.

#47 greencar294

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Posted 06 November 2007 - 04:31 PM

i need some aluminum wheels,and was wondeing if anyone had them? thier the four stars from 1984. i dont know what thier called.if you can help me please email www.greencar294@yahoo.com thank you.

#48 mikeshoup

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Posted 07 November 2007 - 12:31 PM

I'll have to check out my EA81T. I wonder how they correspond with the EA81s.

i need some aluminum wheels,and was wondeing if anyone had them? thier the four stars from 1984. i dont know what thier called.if you can help me please email www.greencar294@yahoo.com thank you.

What does this have to do with EA81s and serial numbers?

Post in the wanted section of the forums please.

#49 GeneralDisorder

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Posted 29 November 2007 - 01:08 AM

I suppose I should update the list as I can't edit the older list post:

Ok - so to summarize (I'll update as people post):


Engine serials / build dates:

- EA81

799337 - 07/81
931272 - 01/82
009899 - 04/82
039802 - 11/82
300305 - 05/83
460419 - 01/84
588506 - 07/84
665918 - 11/84
809067 - 05/85
015963 - 01/86


- EA82

000808 - 12/85
107177 - 07/92

Anyone have any more?

GD

#50 VaporTrail

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Posted 29 November 2007 - 10:30 AM

I suppose I should update the list as I can't edit the older list post:

Ok - so to summarize (I'll update as people post):


Engine serials / build dates:

- EA81

799337 - 07/81
931272 - 01/82
009899 - 04/82
039802 - 11/82
300305 - 05/83
460419 - 01/84
588506 - 07/84
665918 - 11/84
809067 - 05/85
015963 - 01/86


- EA82

000808 - 12/85
107177 - 07/92

Anyone have any more?

GD


at least it looks like a rolling 6 digits! now you just need to identify particular case casting differences :)




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