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
- - - - -

How to bring an 80 brat back to life


  • Please log in to reply
14 replies to this topic

#1 superu

superu

    It's All We'll Drive

  • Members
  • 803 posts
  • Moab

Posted 24 February 2005 - 12:08 AM

I might get an '80 brat EA71 for free...
What would it take to make it fuel injected, and convert it to CNG?
It'd be cool to have an efficient, clean car for around town...

thanks for all your beta!!

#2 85Sub4WD

85Sub4WD

    EA82 Junkie

  • Members
  • 1,244 posts
  • Raleigh NC/Charlotte NC

Posted 24 February 2005 - 12:40 AM

1st thing needed - engine info - EA81 manual on below site includes EA71 info too - tho it's for the '83 and later versions - valves are different on earlier ones

http://www.finleyweb...ault.asp?id=142

FI would be difficult for an EA71 engine - difft intake manifold sizes - and an EA81 won't just drop in - best/easiest conversion/mod would be to put a Weber on it

GET THE BRAT - it is a 1st gen and those are RARE and very neat - one board member recently survived being T-boned in an '81 by a Dodge Dakota going 60mph - not much left of the Brat - but she was OK - the Brat is a safe vehicle

#3 Ross

Ross

    Can't be bothered

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

Posted 24 February 2005 - 01:59 AM

You don't really need FI for cng anyway, just a dedicated CNG carb will do fine.

#4 Caboobaroo

Caboobaroo

    USMB Drunk

  • Members
  • 6,887 posts
  • Oregon City

Posted 24 February 2005 - 02:19 PM

FI would be difficult for an EA71 engine - difft intake manifold sizes - and an EA81 won't just drop in - best/easiest conversion/mod would be to put a Weber on it


ehh better check yourself there buddy. The Brats and all gen I stage II cars can fit an EA81 into them and its a bolt in precedure. Its like putting an EA71 into it. Also some '80 Brats and most '81 Brats came with the EA81 and a d/r tranny as well... The only problem with putting an EA81 into a car that wasn't equiped with one is you're gonna need different shift linkage unless you can get one from the mentioned Brats above. Also there's a gentleman on the board who makes the shift linkage in a kit and sells them for a decent price.

I'm going to be building an EA81TT for my '79 4wd wagon..... mwahahaha

#5 MorganM

MorganM

    Do you Subaru?

  • Members
  • 8,390 posts
  • TwinCities

Posted 24 February 2005 - 02:25 PM

Nothing is free :(

How to revive it? Grab the welder and BFH :drunk:

#6 Flowmastered87GL

Flowmastered87GL

    WCSS Drunk

  • Members
  • 6,125 posts
  • Portland, Oregon

Posted 26 February 2005 - 01:15 AM

Actually with a decent carb and a 1600 a stock brat should get pretty darn good mileage.

#7 Caboobaroo

Caboobaroo

    USMB Drunk

  • Members
  • 6,887 posts
  • Oregon City

Posted 26 February 2005 - 07:16 AM

with the stock 1600, a rebuilt carb, and an electronic disty swap from an '83-newer EA81, I was getting 30mpg around town with my foot in it doing RWD burnouts:D With the JDM high compression 1600 and Holley 5200 with major issues, I had lots more power but I was getting maybe 10mpg:rolleyes:

#8 85Sub4WD

85Sub4WD

    EA82 Junkie

  • Members
  • 1,244 posts
  • Raleigh NC/Charlotte NC

Posted 26 February 2005 - 07:50 AM

The Brats and all gen I stage II cars can fit an EA81 into them and its a bolt in precedure. mwahahaha

swapping a carb is easier than swapping an engine - I was talking about the easiest mod - not the biggest performance boost - webers are easier to service/rebuild than Hitachis.

Also the tranny MUST be swapped b/c a EA71 tranny will not mate with an EA81 engine

That said, yes, I would drop an EA81 (with D/R tranny) and do an SPFI conversion on it if it was mine - EA81 not hard - SPFI conversion fun

#9 Caboobaroo

Caboobaroo

    USMB Drunk

  • Members
  • 6,887 posts
  • Oregon City

Posted 26 February 2005 - 03:18 PM

well the last two years of the gen 1 Brats hadthe EA81 with the EA71 bellhousing and a d/r 4-speed in them.

#10 85Sub4WD

85Sub4WD

    EA82 Junkie

  • Members
  • 1,244 posts
  • Raleigh NC/Charlotte NC

Posted 26 February 2005 - 04:37 PM

well the last two years of the gen 1 Brats hadthe EA81 with the EA71 bellhousing and a d/r 4-speed in them.

I did not know that - I thought that the EA81 brats (both gen) had the EA81 tranny (side starter), and all EA71 had the EA71 drivetrain (center starter), and that no D/R center-starter trannies were ever made .... - that said, finding an EA81 from a Gen 1 brat will be hard - and it would be a good idea to drop late EA81 heads on it (83 and later), as they have bigger valves.

#11 SUBARU3

SUBARU3

    Moderator

  • Moderator
  • 2,734 posts
  • Dallas, Ft. Worth, Texas

Posted 26 February 2005 - 05:35 PM

Actually, 1980 was NOT the EA81 with dual range. That was only offered in 1981. There is a 1981 project one here in Dallas for sale. Contact: Calebz on the board.

I get 28-32 in mixed driving and 35 on the highway with my 80 BRAT. Completely STOCK with stock electronic ignition and all kept WELL maintained. Mobil 1 added 2 miles per gallon.

Todd

#12 Caboobaroo

Caboobaroo

    USMB Drunk

  • Members
  • 6,887 posts
  • Oregon City

Posted 26 February 2005 - 06:24 PM

well we learn something new everyday. For some reason my brain was telling me it wasn't right that they made the EA81 Brat in '80 but something else was telling me they did. Well you should still drop an EA81 with a d/r 4-speed into it;)

#13 superu

superu

    It's All We'll Drive

  • Members
  • 803 posts
  • Moab

Posted 27 February 2005 - 02:01 PM

COOL beta, thanks for the info, kep it coming...

The tranny is a D/R standard, both engines are EA71 .
the mounted one had probs so the guy baought another running on, then its been sitting for 10 years...

#14 SUBARU3

SUBARU3

    Moderator

  • Moderator
  • 2,734 posts
  • Dallas, Ft. Worth, Texas

Posted 27 February 2005 - 02:10 PM

COOL beta, thanks for the info, kep it coming...

The tranny is a D/R standard, both engines are EA71 .
the mounted one had probs so the guy baought another running on, then its been sitting for 10 years...


Don't confuse "dual range" with 4WD/FWD. The 81 Dual range had 4wd HI and 4wd LOW and FWD on the selector. You you could call it "triple range". The pics indicate just regular 4WD.

Todd

#15 superu

superu

    It's All We'll Drive

  • Members
  • 803 posts
  • Moab

Posted 27 February 2005 - 02:37 PM

Don't confuse "dual range" with 4WD/FWD. The 81 Dual range had 4wd HI and 4wd LOW and FWD on the selector. You you could call it "triple range". The pics indicate just regular 4WD.

Todd


Roger that...
I thunk (hoped) it was DR, but it makes sense that its just FWD vs 4WD...
It'd be nice to have low range (see a thread on putting low range into the legacy superu), but i don't see the money flowing from the dollar fairy anytime soon ;)

so this is staring to look like a rebult carb, and regular juices and gasket checking, but how would it work to run CNG ?
I've seen other cars running CNG, that you can run unleaded fuel through also..
would I be able to do that with this brat, or would it be CNG/gasoline dedicated?




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users