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
- - - - -

Hitachi on '78 Brat ... external fuel presure regulator?


  • Please log in to reply
1 reply to this topic

#1 FlyB0y

FlyB0y

    Apprentice to Subie Gurus

  • Members
  • 855 posts
  • Marooned in Oregon City

Posted 09 February 2006 - 03:11 PM

I just got this '78 brat about 4-5 days ago, and it has a freashly rebuilt hitachi, and he added an external fuel preasure regulator ... I don't see anything in my haynes or chilton manual about a regulator, and I was also curious if this is annother "Hit-tossy" carb like I had stock in my '85 brat ... I will just look for a weber if that is the case, and I am assuming that this is a EA-71 since it appears to be the size of one, but I have been told it has a JDM 1600 with 60k miles on it (no way for me to confirm this as yet) Anyhow, any advice apriciated :burnout:

#2 swiftt

swiftt

    USMB Regular

  • Members
  • PipPipPip
  • 89 posts
  • Portland, OR

Posted 09 February 2006 - 04:43 PM

Yup, should be an EA71 with Hitachi carb.

With regard to the carb, I don't think they're bad per say. The real weakness is their reliance on vacuum for the solenoids. The stock vacuum hose setup is a rat's nest and vulnerable to leaks from every angle. Provided there aren't any vacuum leaks, the carbs perform relatively well though.

I put a Webber 32/36 DGEV on my '79 and eliminated all the vacuum lines. Pretty staight forward conversion. The only thing really worth mentioning is the coolant port that sits right under the carb base on the stock manifold. You'll have to block this off somehow. In my case, I threaded it with a 3/8" NPT tap and screwed in a corresponding 1" long grub screw coated in permatex. I also had to fiddle with the jetting of the Webber to get it dialed in right and advance the timing about 2* from stock. Runs like a champ now. Oops, I mean runs like a BRAT now!!!

Good luck.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users