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Old 12-30-2012, 05:47 PM   #1 (permalink)
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I've absolutely had it with the EFI in my Classic. Does anybody know if this setup will work with a 4.2?

Edelbrock 2198 Edelbrock Performer Manifolds for Buick
Edelbrock 1403 Edelbrock Performer Carburetors
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Old 12-30-2012, 06:42 PM   #2 (permalink)
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Yes, but you will need a few other bit's and pieces.
A fuel pressure regulator. A thermostat neck, throttle/kickdown cable brackets etc.

Also the Holly carb works better than the Edelbrock unit for the Rover V8's
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Old 12-30-2012, 07:57 PM   #3 (permalink)
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True. The only thing I'm going to be concerned about is getting fuel through the carb on steep angles. Do you know of any "off-roading" carbs on the market?
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Old 12-31-2012, 08:33 AM   #4 (permalink)
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Holley Performance Products 470 CFM Four Barrel Carburetor*0-90470

There ya go.
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Old 12-31-2012, 02:34 PM   #5 (permalink)
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Thanks a bunch. I'll start saving my pennies!
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Old 01-08-2013, 06:59 PM   #6 (permalink)
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Its not the most fuel effiecent, yet very simple system to work on and somewhat fairly reliable!
I'm curious....why the heck would you want to do a swap like that!

I have an '83 RR that was converted to EFI.....and a '93 LWB 4.2 and besides changing wires and dis. caps and plugs, Have never had any issues in like 13 yrs.!
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Old 01-08-2013, 07:13 PM   #7 (permalink)
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I have stuck injectors because of a frayed wire but no issues with EFI. Whats wrong with yours?
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Old 01-08-2013, 08:17 PM   #8 (permalink)
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If your serious. I have the buick four barrel manifold edelbrock 650cfm carb and some other odds and ends ill send you for 350. Carb is new only ran on mine for a few days now I'm swapping to a bmw power plant and have no need of it. Let me know.


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Old 01-11-2013, 11:23 AM   #9 (permalink)
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Quote:
Originally Posted by grnthng View Post
Its not the most fuel effiecent, yet very simple system to work on and somewhat fairly reliable!
I'm curious....why the heck would you want to do a swap like that!

I have an '83 RR that was converted to EFI.....and a '93 LWB 4.2 and besides changing wires and dis. caps and plugs, Have never had any issues in like 13 yrs.!
Because I've spent the last year and a half tracking down a horrible misfire issue, and replacing everything on the system, and it's still there. Quite frankly, after the grief lucas had given me, I hate fuel injection. Way too much to go wrong. I'd rather just keep it simple with a good old carb.
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Old 01-11-2013, 11:26 AM   #10 (permalink)
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Quote:
Originally Posted by drillerjoe84 View Post
If your serious. I have the buick four barrel manifold edelbrock 650cfm carb and some other odds and ends ill send you for 350. Carb is new only ran on mine for a few days now I'm swapping to a bmw power plant and have no need of it. Let me know.


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Thank you, but I wanted to stay under 500CFM. I've heard of all kinds of running problems when people put too big a carb on these engines.
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Old 01-11-2013, 12:45 PM   #11 (permalink)
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what makes you think that the misfire is caused by a fueling issue? Could just as likely if not more be an ignitioni issue and switching to a carb won't solve that. switching to a carb seem very counter productive especially with your concern of fueling at steep angles.
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Old 01-11-2013, 05:38 PM   #12 (permalink)
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what makes you think that the misfire is caused by a fueling issue? Could just as likely if not more be an ignitioni issue and switching to a carb won't solve that. switching to a carb seem very counter productive especially with your concern of fueling at steep angles.
Why?

Parts replaced:
Spark plugs, ht leads, rotor, cap, ignition pickup, ignition pick up module, distributor, throttle posistion sensor, maf sensor, stepper motor, coolant temp sensor, fuel temp sensor, o2 sensors, fuel pump, fuel filter, injectors, fuel pressure regulator, ECU, and coil. Other than that, no reason.
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Old 01-11-2013, 09:06 PM   #13 (permalink)
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Yes, definitely stay under 500 CFM for the carb and make sure you set it up correctly.

The effectiveness and reliability Lucas 14 CUX EFI system over a carburetor is seriously overrated.

...and as far as a carb giving you problems at steep angles.....a Lucas 14CUX can give you problems at any angle.

It's Achilles heal is the fact the system is a retrofit onto an old engine designed for carbs and the very poor quality (by today's standards) sensors all OEM's used back then. Add twenty years + multiple owners throwing parts at it and you get all kinds of running problems. Some of the most often questions asked on the forum are poor running/EFI related.

A Carb is hard to beat for field diagnosis, repair and service. Especially if you take your Rangie on extended trips into the bush.

LUCAS EFI has it's supporters...........but I'm not one of them.
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Old 01-11-2013, 10:36 PM   #14 (permalink)
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Quote:
Originally Posted by enterusernamehere View Post
Thank you, but I wanted to stay under 500CFM. I've heard of all kinds of running problems when people put too big a carb on these engines.
At any rate I've got the buick intake there if u want it.


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Old 01-13-2013, 01:48 AM   #15 (permalink)
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Quote:
Originally Posted by roverandom View Post
Yes, definitely stay under 500 CFM for the carb and make sure you set it up correctly.

The effectiveness and reliability Lucas 14 CUX EFI system over a carburetor is seriously overrated.

...and as far as a carb giving you problems at steep angles.....a Lucas 14CUX can give you problems at any angle.

It's Achilles heal is the fact the system is a retrofit onto an old engine designed for carbs and the very poor quality (by today's standards) sensors all OEM's used back then. Add twenty years + multiple owners throwing parts at it and you get all kinds of running problems. Some of the most often questions asked on the forum are poor running/EFI related.

A Carb is hard to beat for field diagnosis, repair and service. Especially if you take your Rangie on extended trips into the bush.

LUCAS EFI has it's supporters...........but I'm not one of them.
Finally, somebody who speaks English! I'll have to do more thoral research on the matter, but I'd take 2 less mpg over being stranded in the bush with a busted stepper motor any day of the week
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