Twin carby to single carby?

[Mandy Moo]

We're trying to get our '85 Rangie back on the road - mostly for general driving, but also off road when we get the chance.

If we change to a single carby will we see much difference in fuel consumption? Any recommendations for which system to change over to?

The other thing we want to do is put a manual gearbox in to replace the automatic. Any hints or tips will be much appreciated.

[scrambler]

Hi Mandy,

Advice from a non-technical person:

The only modification I know of to significantly cut fuel costs is to get gas installed. The single carb conversions are usually for Holleys which have their own problems, but big increases in fuel economy I haven't heard of. Even the EFI versions are fairly thirsty.

On the plus side, you're in WA so you get a State and a Commonwealth gas subsidy.

There's no point changing the carbs if you get gas - the conversion of the dual carbs is pretty common.

Manual gearbox - I haven't done or seen an auto-to-manual conversion but as the auto is cut into the manual box, I would expect it would be reasonably straightforward. I would think the bellhousing would be required but otherwise pretty straightforward. But someone here will have done the conversion one way or the other, so you should get more specific advice soon :)

Steve

[rangieman]

If you are running on straight gas id go single carby if you are going to run on duel fuel which is better for going away (more range) id stay with the twin setup
Dont put a holley they dont help with fuel savings unless you have plenty of money to get the car dyno tuned the holley is junk off road and again spend the $ to make them perform off road :wasntme:
So stay the twin carb set up in my opinion :angel:

[Pedro_The_Swift]

sorry for the non-tech reply,,
travelled a LOT in a 85-Hiline towing race cars,,

comfort plus:D

[loanrangie]

Despite what people say a properly setup holley will give little trouble and good economy, in my 81' 2 door rangie i used to get 21 mpg after fitting the holley and lots more power to boot. A weber off a falcon or a 2brl stromberg off a holden would be a good swap also. Auto to manual ? why would you ? i loved my 85' rangie even though it only had a 3sp auto in it.

[rovercare]

Despite what people say a properly setup holley will give little trouble and good economy, in my 81' 2 door rangie i used to get 21 mpg after fitting the holley and lots more power to boot. A weber off a falcon or a 2brl stromberg off a holden would be a good swap also. Auto to manual ? why would you ? i loved my 85' rangie even though it only had a 3sp auto in it.

Despite what people say??? they are crap offroad......that is a fact, even with extended breathers and sprung floats, they're much better, but still not good........Obviously some never get in the bush

[rangieman]

Despite what people say??? they are crap offroad......that is a fact, even with extended breathers and sprung floats, they're much better, but still not good........Obviously some never get in the bush
^^^^^^^^^^^ The man knows his stuff ^^^^^^^^^^^^^:p

[loanrangie]

Despite what people say??? they are crap offroad......that is a fact, even with extended breathers and sprung floats, they're much better, but still not good........Obviously some never get in the bush

Well i ran my rangie for 9 years with the holley and it never gave me any trouble even when doing rocky track in Toolangi
, who died and made you expert, how old are you again ?

[slipedisk]

I did a 465 Holley conversion for a Dentist up in QLD, we machined the carby tower flat drilled in the holes and mounted the carby studs and fitted the carby, from memory the only prob we had was setting up the choke and throttle cable. He said he had better fuel econ and better power.

[rangieman]

Well i ran my rangie for 9 years with the holley and it never gave me any trouble even when doing rocky track in Toolangi
, who died and made you expert, how old are you again ?
And your a expert on carbys :burnrubber:nice to know:wasntme:

[justinc]

:o Settle petals!!:eek:

1) I like Holleys, but they have no place in a 4x4, except the yank desert racers of years ago, and even then they used mostly Holley injection...
2) A properly set up pair of SU HIF's are better performers anyway,
3) Fuel economy and RR V8's are not in the least bit related.
4)I had excellent performance and economy(20 to 21mpg) out of a 1983 High comp RR engine with SU's though, AND it would climb anything without flooding etc.
Leave the twin carbs on and get someone who knows what to do to set them up right.
My 2.75c

JC

[loanrangie]

And your a expert on carbys :burnrubber:nice to know:wasntme:

Never said that, just personal experience thats all, not that it was anything to do with you ! :wasntme:

[rovercare]

Well i ran my rangie for 9 years with the holley and it never gave me any trouble even when doing rocky track in Toolangi
, who died and made you expert, how old are you again ?

23, and that would matter because?? nearly the same as the number of rangies I've bought, sold, wrecked;)

You said despite what everyone said.....I disagree with your opinion

Probably best to keep the personal insults to yourself, or atleast share them on OL instead:D and go finish that ute you've been working on :p

[rangieman]

Never said that, just personal experience thats all, not that it was anything to do with you ! :wasntme:
You quote yourself in a public forum it does have something to do with me:2up:
Its alright for you to have a dig at someone else that is in the know :wallbash:

[justinc]

:o:o I said SETTLE, Petals!!!!!!!:eek::p:p:p

It'll end in tears!!!


JC

[rangieman]

:o:o I said SETTLE, Petals!!!!!!!:eek::p:p:p

It'll end in tears!!!


JC
Its not a good example to set for a newbie,s post:o

[moparrangie]

You lot will get kept in after class if you keep this up:clap2:

[Roverwill]

Jeeez! You can't take this lot anywhere :p

But anyway, more advice from a non technical person - I have a 1977 Rangie and wanted to keep the original twin carbie set up so I did some research and found - like others - it is probably the way to go for off-road use :D and, if properly set up and tuned, no more thirsty than any other option (can't bring myself to use the word 'economical' when talking Range Rovers). I recently had a gas conversion carried out and it ran very sweetly until my distributor failed - bugger :eek: - but the fuel bill was cut in half.

I reckon you should keep with the twins, set them up properly, and you'll have no trouble. They look good too...

Cheers - Will

[DeeJay]

Jeeez! You can't take this lot anywhere :p

But anyway, more advice from a non technical person - I have a 1977 Rangie and wanted to keep the original twin carbie set up so I did some research and found - like others - it is probably the way to go for off-road use :D and, if properly set up and tuned, no more thirsty than any other option (can't bring myself to use the word 'economical' when talking Range Rovers). I recently had a gas conversion carried out and it ran very sweetly until my distributor failed - bugger :eek: - but the fuel bill was cut in half.

I reckon you should keep with the twins, set them up properly, and you'll have no trouble. They look good too...

Cheers - Will

I will second that. Performance aside, I have heard the cops are pink slipping non original carby setup vehicles of certain age. The ADR's came in - I think- early 80's so you can fit a Holley (yuk) to earlier vehicles but probably not an '85.
I'm surprised no one has mentioned this. Not sure if it would get picked up in a RWC, but about 6 months ago I had my 85 County V8 at a carby specialist and he said he would'nt recommend the idea of a single manifold to me (unless 100% gas)
Only 100% LPG has no compliance issues:cool:

[Vern]

, who died and made you expert, how old are you again ? Yeah Matt who do you think you are, Doogie Howser or someone:p

Quadie over a holley any day, stick with the su's

[moparrangie]

Predator over Quadie and Holley.The real carb for making power:burnrubber:

[moose]

I have heard the cops are pink slipping non original carby setup vehicles of certain age.
The main issue will be whether it passes emissions testing.

[rovercare]

Yeah Matt who do you think you are, Doogie Howser or someone:p

Quadie over a holley any day, stick with the su's

I'm to young to remember that......or know anything for that matter:D

[Mandy Moo]

Thanks for the advice :D

Mr Moo is one of those "I"m sure I can fix it" guys, which is good, but frustrating when there's not much info to guide him. This has been really helpful, so it looks like the Rangie might actually get moved out of the garden sooner than we'd hoped.

[Cap]

:o Settle petals!!:eek:

1) I like Holleys, but they have no place in a 4x4, except the yank desert racers of years ago, and even then they used mostly Holley injection...
2) A properly set up pair of SU HIF's are better performers anyway,
3) Fuel economy and RR V8's are not in the least bit related.
4)I had excellent performance and economy(20 to 21mpg) out of a 1983 High comp RR engine with SU's though, AND it would climb anything without flooding etc.
Leave the twin carbs on and get someone who knows what to do to set them up right.
My 2.75c

JC

Thats $2 too much JC... :p

[justinc]

Thats $2 too much JC... :p

So that leaves me with 75c to buy your RR:p:p

:wasntme::angel:

JC

[rovercare]

Thanks for the advice :D

Mr Moo is one of those "I"m sure I can fix it" guys, which is good, but frustrating when there's not much info to guide him. This has been really helpful, so it looks like the Rangie might actually get moved out of the garden sooner than we'd hoped.

So what have you chosen to do??

[HangOver]

So that leaves me with 75c to buy your RR:p:p

:wasntme::angel:

JC

LMAO:D

[Cap]

So that leaves me with 75c to buy your RR:p:p

:wasntme::angel:

JC

What, you still think thats too expensive!? :D

PS: Sorry, wont hijack this thread :angel: