Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

EA8T head cylinder into EA81?


  • Please log in to reply
8 replies to this topic

#1 Bratthem

Bratthem

    New User

  • Members
  • Pip
  • 7 posts
  • San José

Posted 24 July 2005 - 11:06 AM

What happens is that if it is possible to put the head cylinders of an EA82T in to a EA81 in order to install the injection system in the EA81. The thing is that EA81 head cylinder don't have any hole for the injectors, so i'm wondering if the option mentionned before is viable.
If not i think i will have to buy a EA81T engine complete, what do you think i can do?
Does any one can help me?

#2 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 24 July 2005 - 11:50 AM

The EA82 head is a different design from the EA81's, and they are non-compatible. You could put the EA82T into the EA81. Or you could use the SPFI injection system onto your EA81.

Either way, be prepared to do a lot of electrical/electronic work.

#3 Bratthem

Bratthem

    New User

  • Members
  • Pip
  • 7 posts
  • San José

Posted 24 July 2005 - 12:41 PM

The EA82 head is a different design from the EA81's, and they are non-compatible. You could put the EA82T into the EA81. Or you could use the SPFI injection system onto your EA81.

Either way, be prepared to do a lot of electrical/electronic work.


Thenk you i understand now.
Is true that the EA81T engine is better than the EA82T?

#4 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 24 July 2005 - 12:55 PM

"Better" depends on your priorities. The EA81 is a simpler design, adding a certain dependability to it. But on the downside, it has less ultimate power potential and was not designed with forced induction in mind.

The EA82 has timing belts that are a potential dependability issue, but has better breathing and thus more power potential. There is also the likelihood that forced-induction was at least considered in its design.

The EA82T is far more available than the EA81T.

#5 Bratthem

Bratthem

    New User

  • Members
  • Pip
  • 7 posts
  • San José

Posted 24 July 2005 - 01:44 PM

"Better" depends on your priorities. The EA81 is a simpler design, adding a certain dependability to it. But on the downside, it has less ultimate power potential and was not designed with forced induction in mind.

The EA82 has timing belts that are a potential dependability issue, but has better breathing and thus more power potential. There is also the likelihood that forced-induction was at least considered in its design.

The EA82T is far more available than the EA81T.


So that means that with an EA82T ican get better yield than with a EA81T? and also i can have evetually more problems than with EA81T due to timing belts?

I already have an EA81 carburated, on a Brat 88. I want to get more yield from my car, but with that engine the only way will be by changing the carburator, but i want it TURBO.

I dont't have a big budget, even worst i just can purchase parts by saving with a lot of anticipation.

This is why i'm trying to see what is better to do. Here, were i live parts are very expensives but handcraft is very accesible.

I wanted cause i taught it was better, the EA81T but i planned to install SR20DET inyectors with the ECU and distributor (there is a adjustment to make) and a TD04 turbo with the impreza WRX intercooller also.

This is why i'm looking for the engine.
What do you think of that? What you think will work better fo the modification.

Thenk you for your time.

Bratthem.

#6 Ross

Ross

    Can't be bothered

  • Members
  • 1,865 posts
  • Christchurch, New Zealand

Posted 24 July 2005 - 07:53 PM

THe ea81t will go hard with bigger injectors, aftermarket ecu and td04, so will the ea82t. Sure you dont have to change timing belts on ea81t, but thats not a huge advantage considering the fact that if you could find an ea81t you may pay at least 2x what you would for an ea82t. If you can get an ea81t cheapish, it should go well.

#7 Bratthem

Bratthem

    New User

  • Members
  • Pip
  • 7 posts
  • San José

Posted 26 July 2005 - 09:12 AM

I'm looking for one of those engines, considering that i don't have a huge budget
i'm trying to get the cheapest offer.
Do you know by chance a place where i can get one of thhose engines to sent to Costa Rica cental america?
Thenk you very much for your advise.


THe ea81t will go hard with bigger injectors, aftermarket ecu and td04, so will the ea82t. Sure you dont have to change timing belts on ea81t, but thats not a huge advantage considering the fact that if you could find an ea81t you may pay at least 2x what you would for an ea82t. If you can get an ea81t cheapish, it should go well.



#8 Ross

Ross

    Can't be bothered

  • Members
  • 1,865 posts
  • Christchurch, New Zealand

Posted 26 July 2005 - 05:02 PM

I'm looking for one of those engines, considering that i don't have a huge budget
i'm trying to get the cheapest offer.
Do you know by chance a place where i can get one of thhose engines to sent to Costa Rica cental america?
Thenk you very much for your advise.


Well.....yes..but i live a very very long way from you. I have an extra one (minus ecu), but shipping would be ridiculous. Try putting an ad in the marketplace forum.

#9 Petersubaru

Petersubaru

    1000+ Super USER!

  • Members
  • 1,088 posts
  • Sarnia Canada

Posted 03 August 2005 - 10:43 PM

a friend of mine a couple of years ago took his ea81 heads to a machine shop and had larger valves installed along with having the intake and exhaust channels enlarged (hogged out) for better breathing and then ended up putting a holley 2 barrel carb on it...plenty of power to move the now....

What happens is that if it is possible to put the head cylinders of an EA82T in to a EA81 in order to install the injection system in the EA81. The thing is that EA81 head cylinder don't have any hole for the injectors, so i'm wondering if the option mentionned before is viable.
If not i think i will have to buy a EA81T engine complete, what do you think i can do?
Does any one can help me?






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users