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Dual Carb EA-81 Build


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46 replies to this topic

#1 Markus56

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Posted 07 October 2012 - 02:30 PM

Posted Image

why does this head look weird to me? i cant figure it out. its off of an EA-81 motor.

Also , three of the pistons have a small hole bored in the center and one doesn't. I have never seen that before. i will post some pictures after this evening.

Edited by Markus56, 14 October 2012 - 03:31 PM.


#2 Idasho

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Posted 07 October 2012 - 03:03 PM

Head gasket is on wrong :D


Head looks normal, from what I can tell.

#3 Markus56

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Posted 07 October 2012 - 04:22 PM

something with the valves. they are backwards

#4 Idasho

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Posted 07 October 2012 - 04:29 PM

shoot, they sure are!

Just looked over some old photos of mine, and you are correct:burnout:

#5 TOONGA

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Posted 07 October 2012 - 05:53 PM

these are the twin carb heads, very nice looking as well.

could we have pictures of the inlet and exhaust as well please :)

is it number 3 piston that has no hole drilled in it?

TOONGA

#6 Markus56

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Posted 07 October 2012 - 07:12 PM

I think so. front driver side

Edited by Markus56, 07 October 2012 - 08:59 PM.


#7 Markus56

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Posted 07 October 2012 - 11:15 PM

Posted Image

Posted Image

Posted Image

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Posted Image

#8 Markus56

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Posted 07 October 2012 - 11:53 PM

Also, I forgot to mention, the intake and carbs are sitting on my tool box at work :headbang:

#9 TOONGA

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Posted 08 October 2012 - 05:21 PM

very nice, I just love those twin carb motors :)

I have been told by an engine rebuilder, that in order to stop piston slap in these motors when they are rebuilt, the biggest piston in diameter is put into cylinder 3. how true that is I don't know but he said it works.

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#10 Markus56

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Posted 14 October 2012 - 03:29 PM

progress!!

Posted Image

also, i dont have a throttle link for the motor, so i have to make one.

Posted Image

had to fab up a bracket to hold the link on the passenger side

Posted Image

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we've got a powder coating setup at the diesel shop were i work. I love employee perks!

and i decided to paint the hood on the wagon too.

before
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after

Posted Image


i had to factory order in a xt6 clutch kit so that is a week out. and i should have that throttle link done by the end of this week.

Edited by Markus56, 14 October 2012 - 03:34 PM.


#11 naru

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Posted 14 October 2012 - 06:05 PM

Nice. What is it going into?

:popcorn:

#12 TOONGA

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Posted 14 October 2012 - 07:21 PM

we've got a powder coating setup at the diesel shop were i work. I love employee perks!

and i decided to paint the hood on the wagon too.

before
Posted Image

after

Posted Image


Nice. What is it going into?

:popcorn:


Judging from the bonnet I would say a loyale (aka "L" series in Australia)

TOONGA

#13 Markus56

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Posted 14 October 2012 - 07:51 PM

It's going in my 85 gl wagon

Posted Image

Edited by Markus56, 14 October 2012 - 10:01 PM.


#14 el_freddo

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Posted 15 October 2012 - 02:53 AM

I wouldn't mind having a set of those heads sent in my direction :D

Looking good there mate - those engines, dubbed or named an EA81S are super rare over here. Apparently they love to rev and go hard in general too. Look after it ;)

Cheers

Bennie

#15 Markus56

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Posted 15 October 2012 - 09:38 AM

I wouldn't mind having a set of those heads sent in my direction :D

Looking good there mate - those engines, dubbed or named an EA81S are super rare over here. Apparently they love to rev and go hard in general too. Look after it ;)

Cheers

Bennie

I never new that! does anyone know if there is any other info out there about this motor?

#16 naru

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Posted 15 October 2012 - 04:37 PM

I never new that! does anyone know if there is any other info out there about this motor?


9.5 to 1 compression
110PS (HP) @ 6000 rpm
15 kg/m torque at 4000 rpm

From:http://ja.wikipedia....B.B8.E5.85.83_2

#17 naru

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Posted 15 October 2012 - 04:46 PM

http://www.indysworl...udy/sheet5a.jpg
http://www.indysworl...udy/sheet8a.jpg
http://www.indysworl...trudy/rudy.html

#18 Markus56

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Posted 16 October 2012 - 12:59 AM

That is awesome! thank you guys! That wiki page says this motor was available in the US? I thought they were JDM only.

Edited by Markus56, 16 October 2012 - 01:02 AM.


#19 kiwi subbie

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Posted 16 October 2012 - 02:49 AM

Wish I could read those articals in Japanese.
Ive heard the Dual Carb motor had a bit more power and was slightly better than the turbo motor? But dont know if theres any truth to that.
The DC Ea81 RX engine is awesum. Good pulling power up hills.

Edited by kiwi subbie, 16 October 2012 - 02:53 AM.


#20 BratRod

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Posted 16 October 2012 - 06:53 AM

Great find, so jealous.

Subscribed :popcorn:

#21 O.C.D.

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Posted 16 October 2012 - 08:20 AM

Wish I could read those articals in Japanese.
Ive heard the Dual Carb motor had a bit more power and was slightly better than the turbo motor? But dont know if theres any truth to that.
The DC Ea81 RX engine is awesum. Good pulling power up hills.


Google translate is your friend:

http://translate.goo...85.83_2&act=url

#22 old sub freak

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Posted 17 October 2012 - 12:13 AM

E81 S ...hmmmm Hey Mark,Good to see your having fun with your E81S. We should start a gang..haha The 81 S's ?? No..... ,Mine is still chuggin along.I have asked around about someplace that could re-build mine with out any luck. I have never had any luck once I open up a hatichi.I usually just swap carbs till I find a good one..But to find 2 of them?? anyway Have fun in that Montana snow !! Happy Trails,todd

#23 kiwi subbie

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Posted 17 October 2012 - 01:24 AM

Google translate is your friend:

http://translate.goo...85.83_2&act=url


Nah I was meaning for these....
http://www.indysworl...udy/sheet5a.jpg
http://www.indysworl...udy/sheet8a.jpg

#24 ShawnW

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Posted 17 October 2012 - 03:52 AM

I still have a few setups laying around, just carbs and intakes/blue air cleaners. They are Jerry DeMoss's but being stored in my Attic at the moment with no plans for use at the moment either.

#25 kiwi subbie

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Posted 18 October 2012 - 02:24 AM

If i wasn't so extendent with bills etc at the moment I mite had been kean for some spares :burnout:

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