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
- - - - -

DEBATE: diff of gen EA82 Heads


  • Please log in to reply
11 replies to this topic

#1 Marck

Marck

    Certified Subaru Nut

  • Members
  • 776 posts
  • Nipomo

Posted 13 March 2004 - 03:13 PM

Ok, we all heard this over and over again. The generation 3 heads are supposed to be the least prone to cracking in the exhaust port area, while gen 2 heads are supposed to be second best, and gen 1 the worst. I am not going to talk about how to identify which is which, because I think we all know how by now. (All of the information above, I learned from the USMB.)

I just got off the phone with Aluminum Head Rebuilders (http://www.aluminumheads.com/) in Oregon, they told me that there is no difference between the generation 1, 2, and 3 EA82(T) heads. They have dug into who knows how many EA82 and EA82T heads and have not seen any major difference. They said that there is no difference in the material used or the amount used in the exhaust port area. They said that they all have the same chance of cracking in the exhaust port no matter what gen head it is. (None of this is taken to be a quote, just a summary of my understanding from talking on the phone with them.)

Now we have conflicting arguments. Is the information that I posted in the first paragraph fact or myth? Who is right? What we need is real proof. Is there any documents from Subaru telling the difference in the different generation heads?

#2 CIS Subaru

CIS Subaru

    User Awaiting Email Confirmation

  • Members
  • 1,992 posts
  • Columbus, OH

Posted 13 March 2004 - 07:21 PM

I thought I remembered someone saying they held a gen3 head next to a gen1 and could SEE more material in the exhaust port crack area. Did I dream this up? (wouldn't be the first time):-\

#3 GLCraig

GLCraig

    Livin' the live

  • Members
  • 2,706 posts
  • LV, Washington

Posted 13 March 2004 - 07:53 PM

I've been told that the Gen3 heads have more material in the exhaust port area by a former Regional Service manager of SOA

#4 richierich

richierich

    Moderator

  • Moderator
  • 3,760 posts
  • Portland

Posted 13 March 2004 - 10:57 PM

In addition, 85 and 86 Turbos (gen1 heads) were prone to crack head under 60k miles. OR at the least bit of overheating.


So alumnum head rebuilders has a lot of gen 1 heads in stock, by no gen3?


I don't resell any gen1 heads to my customers, and only reuse them if I took them off and they weren't bad at that time.

#5 Marck

Marck

    Certified Subaru Nut

  • Members
  • 776 posts
  • Nipomo

Posted 13 March 2004 - 11:11 PM

They had no gen 3 or 2 turbo heads. They have I think 1 or maybe it was 2 sets of gen 1 turbo heads.

#6 WJM

WJM

    SUBARU

  • Members
  • 7,828 posts

Posted 13 March 2004 - 11:35 PM

All i know is that ive seen a many gen one heads done with. Ive got three sets of Gen 2s...the only failure i had was a burned exh. valve....and got those engines HOT too. no cracks....except for the normal hairline between the valves.

There are no differences between turbo and non turbo heads...other than an exh. valve, and the 1-3 side head has some ports to accomodate the turbo oil and coolant lines.

#7 XSNRG

XSNRG

    Elite Master of the Subaru

  • Members
  • 3,657 posts
  • Olympia

Posted 14 March 2004 - 12:44 AM

Sale people will always tell you that what they have in stock is the BEST...LOL

#8 Caboobaroo

Caboobaroo

    USMB Drunk

  • Members
  • 6,887 posts
  • Oregon City

Posted 14 March 2004 - 04:45 AM

I know Andrew got a set of gen 2 heads from Flowmaster87GL and I looked at the a couple days ago to see if I could port and polish them easily. Well, the water jacket into the exhaust port has a crack in BOTH of them. The passenger side is a lot worst then the driver side but they still have cracks. I couldn't believe it!!

#9 Nebivedu

Nebivedu

    New User

  • Members
  • PipPip
  • 19 posts
  • Ljubljana(SLOVENIA)

Posted 15 April 2004 - 02:03 AM

I have 85GL with EA82 engine with 1 gen head. Suba has 310000km with no problems. The only problem was back differential, which was 20000 miles without any lubricants.

Is there any difference on heads between EA82 with carb and EA82 with MPFi?



I am sorry about my english, because it is not my native language.

#10 archemitis

archemitis

    guy smiley

  • Members
  • 3,554 posts
  • the big minnie

Posted 15 April 2004 - 07:24 AM

I have never even seen a gen 3 head, but the longest runing ea82 (9.5:1 spfi) I have ever seen had gen 1 heads and it was just in need of rings, at 204k miles. it seems like if you get the heads off of a car that made it past 150k, they are good. maybe they were having trouble with the casting, and some were good, but some failed as early as 117k.

#11 Flowmastered87GL

Flowmastered87GL

    WCSS Drunk

  • Members
  • 6,125 posts
  • Portland, Oregon

Posted 15 April 2004 - 01:33 PM

I know Andrew got a set of gen 2 heads from Flowmaster87GL and I looked at the a couple days ago to see if I could port and polish them easily. Well, the water jacket into the exhaust port has a crack in BOTH of them. The passenger side is a lot worst then the driver side but they still have cracks. I couldn't believe it!!


Thats why I didnt charge him :grin: (cause I wasnt sure if they were shot or not)

#12 baccaruda

baccaruda

    YOUR FAVORITE MOD

  • Moderator
  • 6,942 posts
  • SpoVegas, WA

Posted 15 April 2004 - 04:22 PM

Emily from CCR might have some good input here...

It is possible that the gen 3s are "always" in better shape because they're younger and less likely to have as much use on them, but they ARE different at least in the sense that the EA82 stamp on the bottom has changed. Why change the stamp only?




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users