TBI Advice - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > General Tech > Newbie General 4x4 Discussion
Notices

Reply
 
Share Thread Tools Display Modes
Old 06-18-2017, 09:41 AM   #1 (permalink)
Registered User
 
Join Date: Nov 2016
Member # 715450
Posts: 2
TBI Advice

I'm going to be starting my truck build soon and I'm looking for some advice on my engine build. I'm pretty sure that I will be rebuilding a Buick 231 V6 for my Datsun 720 and I'm looking for some advice on whether to go with a carburetor or adapt the TBI from a 4.3 Chevy.

Can someone explain the advantages of the TBI over a carb? The truck is being built for extended camping trips. I won't be hitting any major trails but will be going through some changes in elevation.

My plans for the truck are this:
1981 Datsun KC 4x4
Buick 231 V6
700r4 trans
Stock divorced transfer case
Stock 4.37 gears
31/10.5 BFG All Terrains

In the future I want to pull a small off road trailer so I would like to build the truck right the first time.

This is a budget build and I know that there is a Nissan forum. Right now, I'm just looking for opinions on Carb vs TBI. Thanks.
Abnrml1 is offline   Reply With Quote Quick reply to this message
Old 06-18-2017, 10:50 AM   #2 (permalink)
Registered User
 
Join Date: Apr 2001
Member # 4243
Location: Salt Spring Island, BC CANADA
Posts: 4,073
My TBI tech is dated... tuneability was a problem; especially with a performance cam or higher compression. Not sure if thats still the case. Then there's the matter of adapting the gm TH700, throttle body, and distributor.

Stock 4.3L TBI is rated for 160hp... CPI and vortecs were rated 190-200hp. Same 4.3 vortec in a boat (4V carb) was also 200ish.

I'm quite sure I could pickup a 96+ 4.3L vortec donor cheaper than I could build a buick V6.
__________________
Dodge cobbler... junkyard style (1stgen cummins theme)
u2slow is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 06-19-2017, 09:49 AM   #3 (permalink)
Pirate4x4 Addict!
 
abig84's Avatar
 
Join Date: Mar 2007
Member # 88383
Location: wheaton IL
Posts: 5,388
i love the older TBI engines, got a 93 4.3 in my s10, tbi 305 in my 1990 daily driver and putting a 91 350 into a 51 chevy 1ton.


they are pretty simplistic and have never really had any issues with any of them they just seem to be very trouble free motors in my experience.

one good thing about them too is now everyone wants the newer vortecs so you can probably find older TBI motors really cheap
__________________
Quote:
Since you perverts have a billion porn videos posted in the TP, I've disabled the function in the TP. It works everywhere else.
abig84 is offline   Reply With Quote Quick reply to this message
 
Old 06-19-2017, 10:49 AM   #4 (permalink)
Newbie
 
Join Date: Jan 2015
Member # 542889
Posts: 22
TBI is the way to go over a carb any day. I just threw a TBI setup on my supercharged 22r. Cold starts are better regardless of altitude, it lugs down way harder without dying, steep hills have no effect with it, the engine has a near perfect smooth idle. The list goes on and on! I really didn't see a huge difference in fuel mileage, but the rpm's from 1000-5500 are really smooth, even before I supercharged it. You will have no elevation issues ever with the TBI setup because the later ones have a map sensor. I am not sure if the older setups have a map sensor, and could be wrong because they might. I just ordered that kit from Affordable Fuel Injection and was worth the money. A great swap in my opinion.
SoloBadger is offline   Reply With Quote Quick reply to this message
Old 06-19-2017, 12:21 PM   #5 (permalink)
Registered User
 
Join Date: May 2011
Member # 190804
Location: Drake Colorado
Posts: 130
TBI has no disadvantage to carbs. None.

There is a LOT to be said about converting an old engine to TBI and the resulting requirement for tuning. But it's really not that hard once you break it all down.
Blakes is offline   Reply With Quote Quick reply to this message
Old 06-21-2017, 10:22 AM   #6 (permalink)
Pirate4x4 Addict!
 
abig84's Avatar
 
Join Date: Mar 2007
Member # 88383
Location: wheaton IL
Posts: 5,388
Quote:
Originally Posted by Blakes View Post
TBI has no disadvantage to carbs. None.

There is a LOT to be said about converting an old engine to TBI and the resulting requirement for tuning. But it's really not that hard once you break it all down.
if you really want to be a negative nancy you can nitpick the few sensors and more wires of a TBI but thats about it.
__________________
Quote:
Since you perverts have a billion porn videos posted in the TP, I've disabled the function in the TP. It works everywhere else.
abig84 is offline   Reply With Quote Quick reply to this message
Old Today, 10:51 AM   #7 (permalink)
Registered User
 
Join Date: Aug 2007
Member # 98162
Posts: 66
Is this an even-fire engine, or an odd-fire? Might be possible to use the later 3.8 EFI components?
Lead Head is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
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.

** A VERIFICATION EMAIL IS SENT TO THIS ADDRESS TO COMPLETE REGISTRATION!! **

Email Address:
Insurance
Please select your insurance company (Optional)

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.



Thread Tools
Display Modes

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



All times are GMT -7. The time now is 01:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.