C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

mechanical pump for tbi

Thread Tools
 
Search this Thread
 
Old Mar 21, 2012 | 04:42 PM
  #1  
Louis Farmer's Avatar
Louis Farmer
Thread Starter
Cruising
 
Joined: Mar 2011
Posts: 10
Likes: 0
From: Ponce de Leon FL
Default mechanical pump for tbi

Hello I have searched all over the internet and came to the conclusion that nobody has done this, the reason i want to is i dont too much care for electrical stuff. I put in a electric fan and it failed so went back to clutch fan. Im not too good with wiring and i didnt want to cut and flare my fuel lines. Oh, random thought can a electeric pump be mounted in the engine bay? like where the manual one was? just a thought


Ok so what i got is a complete tbi from a 95 truck came with the entire wiring harness except tail lights, got blinker bulbs, fuse box, sensors, dizzy, computer, air cleaner, intake, and tb with injectors and some funny looking canister.

its going in my 79 350 currently 750 edelbrock. Looking at manual fuel pumps and found 2 same price as inline electric one rated at 12 lbs the other for 15
http://www.ebay.com/itm/330697196020...84.m1436.l2649

http://www.ebay.com/itm/130665235209...84.m1436.l2649

what is the diffrence in pumps as far as will they work the same will they provide the right ammount of flow and whatever else tbi needs like i said im not big on this stuff im more of a welder and painter
and driver

the motor is out of my dads 87 1 ton dulley was gonna take that tbi when we did the swap but i was in too much of a hurry, now im kinda regreting it lol

i have and can do everything else modify my intake to fit the tb run wires that are pre fabbed lol and whatever else that comes along

thanks in advance for the help guys got to the point where i needed to talk to more than 1 person bout this.
Reply
Old Mar 21, 2012 | 05:32 PM
  #2  
oldalaskaman's Avatar
oldalaskaman
Le Mans Master
10 Year Member
 
Joined: Aug 2010
Posts: 9,272
Likes: 17
Default

I think its your car , you do what you want to it.
Reply
Old Mar 21, 2012 | 05:43 PM
  #3  
Vette5.5's Avatar
Vette5.5
Le Mans Master
 
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
Default

Both of the mechaincal pumps shown, look good, but you may have other problems. 1st, is your engine set up to accept a mechanical pump. If these puppies are putting out 15 psi, to high for a carb, and you'll need a regulator for 5-7 psi. Not sure what pressure TBI runs at, but probably to high for a carb. Again regulator. If staying with TBI, electrics need to rear mounted, as better pushers, than suckers. I normally go with rear electric's, and engine mounted regulators. Usually a Mallory 140 kit.
Reply
Old Mar 21, 2012 | 08:28 PM
  #4  
oldalaskaman's Avatar
oldalaskaman
Le Mans Master
10 Year Member
 
Joined: Aug 2010
Posts: 9,272
Likes: 17
Default

a better place to search might be the C4 section, the 84 vette hqd a system similar
Reply
Old Mar 21, 2012 | 11:45 PM
  #5  
Louis Farmer's Avatar
Louis Farmer
Thread Starter
Cruising
 
Joined: Mar 2011
Posts: 10
Likes: 0
From: Ponce de Leon FL
Default

ok thanks guys

i have a manual pump feeding a edlebrock 750 switching to tbi i think the 15 psi pump with a regulator will work i read that a manual pump pulses fuel and tbi wont handle that or dosent like it

vette 5.5 figured they had to be rear mounted just wishful thinking

oldalaskaman im a navy man myself IYAOYAS
Reply
Old Mar 22, 2012 | 12:23 AM
  #6  
oldalaskaman's Avatar
oldalaskaman
Le Mans Master
10 Year Member
 
Joined: Aug 2010
Posts: 9,272
Likes: 17
Default

did some checking, 9-13 is what you're looking for , some systems have a pulsator that assists keeping the pressure constant, dont know if it would work in your case, best would be pump in , fuel pressure regulator at the 9-13, then a return to the tank letting the regulator do the work. It would be interesting to see if your idea would work. once you have the system pressurized , if you had some way of putting a check valve in the line from the pump, you could minimize pulses.....I think
Reply
Old Mar 22, 2012 | 03:01 AM
  #7  
oldalaskaman's Avatar
oldalaskaman
Le Mans Master
10 Year Member
 
Joined: Aug 2010
Posts: 9,272
Likes: 17
Default

http://www.google.com/url?sa=t&rct=j...rFN1k5NcN8viHg
hope this helps, excellent info
Reply
Old Mar 22, 2012 | 04:46 PM
  #8  
scottyp99's Avatar
scottyp99
Le Mans Master
15 Year Member
 
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Default

'82 'vettes came with in-tank electric fuel pumps, it probably would be an easy upgrade. Might be worth looking into.


Keep the shiny side up!
Scott
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Mar 22, 2012 | 05:19 PM
  #9  
mrvette's Avatar
mrvette
Team Owner
Active Streak: 120 Days
Liked
Loved
Community Favorite
 
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Default

I seriously doubt any mechanical pump will deliver gas on a even enough pressure to when the injectors fire, the pump has to be much more even as the lines have no open to atmosphere reservoir like a carb does....

so it's a vane electric, located to the rear of the car, and don't ask me how I know this...MMMk?.....

the electric pump will suck forward, and encourage vapor lock on the suck side of the pump IF located forward...this is obviously heat related....

so put the pump in the rear,and run the power wire....

when running that wire, you have to have it routed through a oil pressure actuated system, so if engine dies, fuel supply does also....

safety gig for accidents....


Reply

Get notified of new replies

To mechanical pump for tbi





All times are GMT -4. The time now is 02:54 PM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE