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

- - - - -

Dual carb question

  • Please log in to reply
4 replies to this topic

#1 JSwinbourne


    New User

  • Members
  • Pip
  • 1 posts
  • Henderson/Las Vegas

Posted 05 March 2007 - 12:53 AM

Im "restoring" my 78 brat, and for now i'm using the stock motor. It's th single carb 1.6 liter. I'm going to give it a complete overhaul, and was wondering if I could convert it to the dual carb setup. Are there any differences between the two motors, like internally? Whould it be worth the time and effort, or would I be better off sticking to the original set up? Thanks.

#2 Jerry DeMoss

Jerry DeMoss

    Pushrods 'O' Fury

  • Members
  • 2,408 posts
  • Colorado

Posted 05 March 2007 - 12:59 AM

They did make duallies for the ea71 and ea81.So you could either put on the ea71 duals or change out your engine and go with an ea81 and put duals on that.Nothing needs to be changed internally on the motor as you asked.



    USMB Regular

  • Members
  • PipPipPip
  • 39 posts
  • spokane

Posted 05 March 2007 - 03:14 AM

I've been running the duel carb set-up for a while now on my ea71.
The set-up I am using as i was told(sold)is from a 1400cc block.The carbs
are the OLD type(DCG-306W-5[ R & L ]).The manifold is a bit taller so I used
longer bolts,but it matched up fine.They are manual choke carbs(not enough
room between for auto-choke)so routing a cable is a must.I use the same
throttle cable,but moved the butt-clamp to the bell housing bolt.I had to
simplify vacuum lines as there is not a vacuum modulator.I had to build an
air box and route the pcv hoses.As for perfomance....wow what a differance.
My one-ton rust bucket accually likes hills,mud,and slush. It has a 3rd gear
pull from 15 to 65+(torque through horsepower)floored.I think the points keep the top RPMs down.As for your rebuild,use your existing carb. set-up for enginebreak-in.The duels let alot of air/fuel in quickly,thus stressing every nut holding the heads on.This could make for a long walk with a tight fresh block.
Also, ckeck your state smog rules,unless your '78 is age exempt.


#4 kiwi subbie

kiwi subbie

    Certified Subaru Nut

  • Members
  • 932 posts
  • Christchurch, New Zealand

Posted 06 March 2007 - 04:09 AM

i was thinking of fitting dual carbs to my ea71 engine. i just not sure what would be the way to go... either fit dual carbs or an webber carby to it. whats would be the better 1 to go for?:confused:

#5 Loyale 2.7 Turbo

Loyale 2.7 Turbo

    The Mighty "BumbleBeast"

  • Members
  • 7,502 posts
  • Roatán, Honduras.

Posted 06 March 2007 - 11:11 AM

I Suggest to Go Weber, it´s Simplier and Far Away Better than the Craptachi Carb that came Stock...

I was Wonderin´ if a Dual Webers 32/36 Will be a Great idea, or if only with That, the Engine will Become a Huge Gas Eater?

Well... I suggest go Weber.

Good Luck! :)

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users