Getting ready for a carb to tbi swap! - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> Modern Electronic Engines
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-09-2013, 06:50 AM
Registered User
 
Last photo:
Join Date: Feb 2013
Posts: 15
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Getting ready for a carb to tbi swap!

I've posted about my 1985 S-15 that had a 2.8l originally, which I replaced with a '93 3.4l.

I then went to an Edelbrock manifold and a Holley 4 barrel 390 cfm carb.

Since I've had the truck running, I've not been able to get the thing to run well consistently. Seems like once a week, I've got to fix something with the carburetor. It was like new when I got it and did a rebuild with Holley's kit.

What I should have done, but did not know it at the time, that I could have gone straight to a tbi setup.

In any case, I have most of the parts to do the tbi install and am thinking of using the Edelbrock intake I have on there now, BUT, I have a question about it.

The portion of the Edelborck intake for the 4 barrel is the picture below. The throttle body I am using is the model 220 and has two bores/two injectors.

Would there be any benefit to removing that center partition in this part?

The only issue I can think of that might be a problem would be if one of the injectors went bad, then one side or the other of the engine would not get any gas, creating a lean condition, then probably driving the other injector to richen the mixture for the opposite side even more, probably resulting in the fouling of the plugs.

Thoughts?


    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-27-2013, 10:58 AM
bigdog7373's Avatar
Of course it's fast
 
Last photo:
Join Date: May 2010
Location: florida
Posts: 2,673
Wiki Edits: 0

Thanks: 13
Thanked 49 Times in 49 Posts
Do not remove the center. It's made that way for a reason. Only reason you'd want it open is if you're running super high rpm.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-27-2013, 02:05 PM
Registered User
 
Last photo:
Join Date: Feb 2013
Posts: 15
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the reply. I did not modify that part as I had realized that I still needed a spacer for the throttle body anyway.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-27-2013, 02:17 PM
bigdog7373's Avatar
Of course it's fast
 
Last photo:
Join Date: May 2010
Location: florida
Posts: 2,673
Wiki Edits: 0

Thanks: 13
Thanked 49 Times in 49 Posts
Cool. Just make sure you get the spacer with the separation too. You should keep the rignt and left side separate or it will not have that low end torque you need.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-04-2013, 10:17 AM
Everything is HAMMER!
 
Last photo:
Join Date: Jan 2006
Location: belleville, Michigan
Age: 25
Posts: 348
Wiki Edits: 0

Thanks: 2
Thanked 1 Time in 1 Post
Sounds like some bad luck with your carb. My camaro had a holley and after a rebuild and a little tuning it ran like a champ and never required much attention, same thing for the holley on my buddy's 302 v8 ranger.

However, if you ever feel like doing any tuning on the tbi you should really look into the EBL flash system, the options of what you can tune are astounding and it has a self learn(tunes while you drive) capability as well. You will never look back to carbs once you figure out efi tuning.

Good luck with the swap!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-04-2013, 02:38 PM
Registered User
 
Last photo:
Join Date: Feb 2013
Posts: 15
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I got the TBI install finished up on Saturday morning and spent the day getting little things sorted out.

She is running and pretty well at that after sorting out a lean issue.

The custom tuning is one of the reasons that I wanted to do this swap.

Here is a short video of the engine running:


Reply With Quote Quick reply to this message

Recent Modern Electronic Engines posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
94 350 tbi to carb swap. jerryvarnell Engine 7 11-19-2011 11:27 AM
TBI to carb swap eatonde Engine 20 09-09-2008 11:01 AM
Carb to TBI Swap? mrevil General Rodding Tech 2 03-26-2005 09:38 AM
Carb to TBi Swap Project Junorr Introduce Yourself 7 09-06-2004 03:27 PM
Tbi To Carb Swap strracer7 Engine 5 08-05-2004 12:13 AM


All times are GMT -6. The time now is 12:31 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.