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post #1 of 9 (permalink) Old 02-15-2011, 08:18 AM Thread Starter
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goodbye SU carbs

Finally had it with the sensitivity of the SU Carbs, so popped on a new Edelbrock manifold and 4 bbl...

Much less maintenance, and the Frankenstein RR V8 in the old 61 seems to love it also....

mike
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...mike

61 Series IIa Hybrid Coiler Defender
69 Series IIa
80 Series III Lightweight SOLD
2005 Disco SOLD
2000 Disco RIP - Tree
1999 Range RIP - End over end 2.5 times !
1998 Disco GONE - Ex-wife
2010 Range R Sport

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post #2 of 9 (permalink) Old 02-15-2011, 12:45 PM
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Nice, is the Range Rover V8 stock? (cam, heads etc)
What CFM carb did you use?

I'm currently collecting the parts to swap out the Lucas EFI in my Rangie for and Edelbrock combo.

"Your only supposed to blow the BLOODY DOORS OFF" Charlie Croaker. The Italian Job. 1969.


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post #3 of 9 (permalink) Old 02-15-2011, 08:44 PM Thread Starter
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Originally Posted by roverandom View Post
Nice, is the Range Rover V8 stock? (cam, heads etc)
What CFM carb did you use?

I'm currently collecting the parts to swap out the Lucas EFI in my Rangie for and Edelbrock combo.
Pretty much, RangeRover 3.5 litre, Engine fitted with Buick high volume oil pump gears to improve pressure, MGB GT exhaust manifolds, Engine and
Gearbox lifted 2Ē to allow more clearance, as front axle tended to foul on full travel.

mike

...mike

61 Series IIa Hybrid Coiler Defender
69 Series IIa
80 Series III Lightweight SOLD
2005 Disco SOLD
2000 Disco RIP - Tree
1999 Range RIP - End over end 2.5 times !
1998 Disco GONE - Ex-wife
2010 Range R Sport

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post #4 of 9 (permalink) Old 02-16-2011, 05:15 AM
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Originally Posted by roverandom View Post

I'm currently collecting the parts to swap out the Lucas EFI in my Rangie for and Edelbrock combo.
Dear lord why?

I couldn't imagine going back to a carburetor.

Yes, I am still alive, and still in the Rover parts business.
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post #5 of 9 (permalink) Old 02-16-2011, 06:20 AM Thread Starter
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Dear lord why?

I couldn't imagine going back to a carburetor.
Keep prayin pal, the SUs were junk that caused lots of issues and very sensitive. Perhaps just not enough experience on managing, so went with what I know. A great difference for me.

cheers

...mike

61 Series IIa Hybrid Coiler Defender
69 Series IIa
80 Series III Lightweight SOLD
2005 Disco SOLD
2000 Disco RIP - Tree
1999 Range RIP - End over end 2.5 times !
1998 Disco GONE - Ex-wife
2010 Range R Sport

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post #6 of 9 (permalink) Old 02-16-2011, 07:01 AM
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Keep prayin pal, the SUs were junk that caused lots of issues and very sensitive. Perhaps just not enough experience on managing, so went with what I know. A great difference for me.

cheers
I can understand not wanting the SU carbs, just be glad you only had two.

I just can't see going from Lucas EFI that is pretty damned robust to a carburetor, THAT is a step backwards.

Yes, I am still alive, and still in the Rover parts business.
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post #7 of 9 (permalink) Old 02-16-2011, 07:14 PM Thread Starter
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Originally Posted by PTSchram View Post
I can understand not wanting the SU carbs, just be glad you only had two.

I just can't see going from Lucas EFI that is pretty damned robust to a carburetor, THAT is a step backwards.
I would agree, "if" I had Lucas EFI prior... I had Lucas Inignition, not Lucas EFI.
New parts being available and cheaper also a factor in this area...
I guess you are referring to roverandom

cheers, mike

...mike

61 Series IIa Hybrid Coiler Defender
69 Series IIa
80 Series III Lightweight SOLD
2005 Disco SOLD
2000 Disco RIP - Tree
1999 Range RIP - End over end 2.5 times !
1998 Disco GONE - Ex-wife
2010 Range R Sport

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post #8 of 9 (permalink) Old 02-17-2011, 04:38 AM
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Cheaper? I've got piles of the EFI stuff. If my hybrid ever gets built (the first progress in three years was last month) it'll be Lucas 14 CUx EMS.

Yes, I am still alive, and still in the Rover parts business.
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post #9 of 9 (permalink) Old 02-17-2011, 07:41 AM
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I don't have much faith in the Lucas EFI, or any EFI system from the dawn of fuel injection for that matter. I have worked on too many of them and seen the same issues time and again. Poor management systems, cheap, low grade sensors/controllers and huge amounts of really quite atrocious wiring that is poorly routed, susceptibility to moisture/vibration and heat these and more are all failings of any late eighties/early nineties EFI systems. These systems are also a factory retrofit on engines developed for use with carbs so the various sensors and controllers are often located in ridiculous places. Add to that almost twenty years of use and its a recipe for eternal issue's.

I know how to repair it, and have done so countless times and I agree when it on it's game it's the dog's bollocks. And the current generation of engines designed from the ground up for EFI and direct injection with the variable valve timing etc. with higher grade components are just fantastic.


But I can't fix it miles away from civilization without carrying $$$$ worth of spare gizmo's, special tools and a comprehensive circuit diagram. And that is the real difference for me because that is where I want to take my Rangie. I have also noted recently that the quality of replacement electrical parts is not what it once was and good used Rangie parts are rare and expensive in this neck of the woods.

Fuel consumption and emissions will not be any different with a well tuned carb system vs EFI the only down side is the ability of the EFI to adapt better to altitude changes and withstand high angle maneuvers such as long, steep hill climbs and rock crawling. But those are compromise's I am willing to accept as I have wheeled Carb fed vehicles for years (Older Rangies, Series I,II,IIA,III,90,110 and domestic pick-ups) and have always been able to overcome these issues.

Anyway, that's my reasoning behind the carb swap. It will most likely be different for others and that's ok.

"Your only supposed to blow the BLOODY DOORS OFF" Charlie Croaker. The Italian Job. 1969.


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