jimjames2uk

Member

• Nov 15, 2016

• #1

have a v8 3.5 efi in my defender at momnet and have a spare engine i'm rebuilding. Would it be better to stick with the efi or rebuild it with carbs and which would be better su's or stromberg thanks

 

cooltide

sheep fancier

• Nov 15, 2016

• #2

Efi. Strombergs and su are both underwhelming (well they are on a low comp v8) Also your fuel pump pressure is too high for carbs.

 

jimjames2uk

Member

• Nov 15, 2016

• #3

thanks just thought id ask the question

 

J6BXR

Member

• Dec 17, 2016

• #4

EFI

 

RobV8Defender

Active Member

• Dec 18, 2016

• #5

Hi, I have just had a Weber carb fitted to mine - I am totally happy with it.

Probably, almost certainly, you will get better performance from EFI - but for reliability and simplicity - the carbs are great.

I'm in Somerset if you want a go to find out.

 

J6BXR

Member

• Dec 18, 2016

• #6

Hi I had weber on my last one and agree, it installed a bit of confidence when going on a long trip..........you can fix it if it goes wrong and it will run on lower grade fuel.......I do like the efi on my disco.

Thanks for the offer .......in Glasgow though

 

J6BXR

Member

• Dec 18, 2016

• #7

Rob what sort of fuel consumption do you get on a run?

 

jamesmartin

Well-Known Member

• Dec 18, 2016

• #8

jimjames2uk said:

have a v8 3.5 efi in my defender at momnet and have a spare engine i'm rebuilding. Would it be better to stick with the efi or rebuild it with carbs and which would be better su's or stromberg thanks

Click to expand...

efi is the better option

 

norseman

Well-Known Member

• Dec 19, 2016

• #9

I've had four EFI RR V8's (I hotwire followed by 3 flappers) without any problems but agree that for pure simplicity it's carbs, preferably SU's I would say.

 

J6BXR

Member

• Dec 19, 2016

• #10

I swore by SU's until I used a weber 500 so much simpler to use than Holley , problem now is cost of weber and manifold . SU's still good excellent set up....Like my efi though

 

RobV8Defender

Active Member

• Dec 24, 2016

• #11

Hi, sorry for slow reply - as far as economy goes - I just don't know - but I think it is around 15 mpg..

I tend to just lie about it - saves a lot of conversations....

 

RobV8Defender

Active Member

• Jan 4, 2017

• #12

For the good of the order, I measured fuel in vs mileage - 35L gets 120 miles.

 

RobV8Defender

Active Member

• Jan 4, 2017

• #13

For completeness, this is a V8, 3.9 with Edelbrock carb going through a ZF Auto Gearbox