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
- - - - -

What to do with cracked heads


  • Please log in to reply
4 replies to this topic

#1 jbecker

jbecker

    USMB Regular

  • Members
  • PipPipPip
  • 56 posts
  • issaquah

Posted 28 December 2007 - 10:24 AM

My heads off my ea82 turbo are both cracked between the valves and exhaust ports. Can i get the cracks in the exhaust ports welded up and not worry about the other cracks. Who would be able to weld those.
Thanks Jason

#2 Sister7

Sister7

    USMB is life!

  • Members
  • 194 posts
  • Port Orchard

Posted 28 December 2007 - 11:41 AM

Small cracks between the valves (aka "bridge cracks") should be okay. I know there was a Subaru TSB about them... maybe somebody around here knows where it is. I don't think that welding cracks in the exhaust ports is your best option. It's probably much easier and cheaper to come up with replacement heads... lots of parts here in the NW.

#3 Gloyale

Gloyale

    It's a sickness

  • Members
  • 8,894 posts
  • Corvallis, OR PNW

Posted 28 December 2007 - 12:30 PM

Of the last 4 EA82t engines I'[ve torn down, ALL of them have the BTV cracks. Those are pretty much fine, as long a the valve seats are still in place.

5 of the 8 heads had exhaust crack as well(it's worth mention that a few of these motors ran, pretty well actually, even with the cracks, they don't ALWAYS go through to the waterjacket.)BUT,... I'd say it's pretty damn hard to find uncracked heads used. And new or "rebuilt" heads cost $200-400 dollars, depending on source.

In contrast, welding my heads cot me $60 per head. That was at a racing specialist in Wisconsin, buit I'm sure there is somneone in you're neck of the woods. Talk to the local sprint track guys.

#4 jbecker

jbecker

    USMB Regular

  • Members
  • PipPipPip
  • 56 posts
  • issaquah

Posted 28 December 2007 - 08:47 PM

Of the last 4 EA82t engines I'[ve torn down, ALL of them have the BTV cracks. Those are pretty much fine, as long a the valve seats are still in place.

5 of the 8 heads had exhaust crack as well(it's worth mention that a few of these motors ran, pretty well actually, even with the cracks, they don't ALWAYS go through to the waterjacket.)BUT,... I'd say it's pretty damn hard to find uncracked heads used. And new or "rebuilt" heads cost $200-400 dollars, depending on source.

In contrast, welding my heads cot me $60 per head. That was at a racing specialist in Wisconsin, buit I'm sure there is somneone in you're neck of the woods. Talk to the local sprint track guys.


ok thanks guys

#5 captainkf

captainkf

    USMB Regular

  • Members
  • PipPipPip
  • 51 posts
  • Rossland BC canada

Posted 29 December 2007 - 01:04 AM

I purchased two used heads with no cracks for $45 ea from a junkyard in NY. It took a while to find heads with no cracks, but worth it I think. I think those little cracks could possibly spread, which seems an unnesissary risk.

-Richard




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users