Need 2 cents....79 build: Carb or FI

Need 2 cents....79 build: Carb or FI

Joined: October 23rd, 2008, 11:19 pm

October 26th, 2008, 12:05 am #1

My 79 is gutted (by me) to the wiring harness. I have an 81 (rust-ravaged) that was also gutted ALL the way(also by me). The 79 had its head sold by prev owner. The 81 has a complete engine and apparently ran last year.

Should I:

A) get a carb (1300 or 1500) head so I can eventually get dual 40's... (+/-$500head +$2000 dual 40's)

or

B) swap in the 81's harness and eventually upgrade the injection system... ($????? megasquirt)

Keep in mind that I need to (eventually) be able to smoke my old man who's runnin dual 40's, a hot cam, headers, ignition, and such.
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TonyK
TonyK

October 26th, 2008, 12:39 am #2

I have run a 79 with a 36 DCNF for 28 years and it has been a fun ride.

Currently working on Megasquirt conversion with my own manifold.







I am keeping the Carb just in case the frustration builds and I cannont get it to run right.

But let us face facts here. The Carb is quick and simple to install, Fuel injection will take a bit more time. There are members working on a direct swap from the Bertone Bosch system. That would be a great benifit to those that already have the injection system on there cars. But the carb is dated, it has served it's purpose and to obtain further advancement isn't through a compromise of ventures and jets that offer trade off's in either low end performance or high end horse power. If my injection system works it can be real winner. If it fails the carb offers reliability of past engineering.

TonyK

Grimsby Ontario Canada.
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Joined: October 23rd, 2008, 11:19 pm

October 26th, 2008, 12:47 am #3

Thanks for the input. Carb relaibilty and ease of tuning is definitly +'s for me.

Do you have any pics of your x before it became a "test track"? I'm thinking of painting mine a similar color, like a big bad orange...
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Tommy
Tommy

October 26th, 2008, 2:15 am #4

My 79 is gutted (by me) to the wiring harness. I have an 81 (rust-ravaged) that was also gutted ALL the way(also by me). The 79 had its head sold by prev owner. The 81 has a complete engine and apparently ran last year.

Should I:

A) get a carb (1300 or 1500) head so I can eventually get dual 40's... (+/-$500head +$2000 dual 40's)

or

B) swap in the 81's harness and eventually upgrade the injection system... ($????? megasquirt)

Keep in mind that I need to (eventually) be able to smoke my old man who's runnin dual 40's, a hot cam, headers, ignition, and such.
I have 3 cars that run well,one of them I'd trust to drive any distance. It's the 79 that was converted to FI and If I can keep my 78, I will most definitley swap a 1500 with FI into it.

This car has given me ZERO problems even when it's near 120 degrees here in AZ. It's starts instantly every time and idles at 600 relatively smoothly for having a yugo head 35/75 cam. I'm guessing a stock set-up would probably idle even better. Throw in a cool free flow filter and sounds great during acceleration but is quiet at highway speeds.

That's my .03 cents worth - inflation
Tommy


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TonyK
TonyK

October 26th, 2008, 2:27 am #5

Thanks for the input. Carb relaibilty and ease of tuning is definitly +'s for me.

Do you have any pics of your x before it became a "test track"? I'm thinking of painting mine a similar color, like a big bad orange...
That part is of a car that I scrapped and sand blasted and painted the color orange.

TonyK.
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Joined: December 21st, 2004, 3:04 am

October 26th, 2008, 7:00 am #6

My 79 is gutted (by me) to the wiring harness. I have an 81 (rust-ravaged) that was also gutted ALL the way(also by me). The 79 had its head sold by prev owner. The 81 has a complete engine and apparently ran last year.

Should I:

A) get a carb (1300 or 1500) head so I can eventually get dual 40's... (+/-$500head +$2000 dual 40's)

or

B) swap in the 81's harness and eventually upgrade the injection system... ($????? megasquirt)

Keep in mind that I need to (eventually) be able to smoke my old man who's runnin dual 40's, a hot cam, headers, ignition, and such.
If ya want a sweet and reliable street car... then go with FI... and you can go with FI for a racer also...

But there is NUTTIN' like the sound of a couple of WEBERS WIDE OPEN... with headers and cam to complete the mix... and relatively a constant messing with to get them to cooperate.

Have fun...


My best,



Tony
Black Tooth and me... since 1983!
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Joined: October 15th, 2007, 3:50 am

October 26th, 2008, 3:29 pm #7

My 79 is gutted (by me) to the wiring harness. I have an 81 (rust-ravaged) that was also gutted ALL the way(also by me). The 79 had its head sold by prev owner. The 81 has a complete engine and apparently ran last year.

Should I:

A) get a carb (1300 or 1500) head so I can eventually get dual 40's... (+/-$500head +$2000 dual 40's)

or

B) swap in the 81's harness and eventually upgrade the injection system... ($????? megasquirt)

Keep in mind that I need to (eventually) be able to smoke my old man who's runnin dual 40's, a hot cam, headers, ignition, and such.
As long as one is willing to deal with the extra complexity. There is much more to be gain from EFI and fuel starvation is not a problem with FI in general.

Carbs are more basic, simple and when done properly very reliable. DCOEs can produce more power than DCNFs, but require more work to install on the X.

Beyond that, it's a drive train/engine swap.
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