Sticking a Weber on a 505 SR (XN1)

505STI

505STI

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Folks,
I recently acquired an SR.
Would just not start today.
Checked the air filter......shock horror, no sponge in the air filter.
The 'sponge' in the air filter has disintegrated and obviously gone down the carby.

So rather than recondition the SOLEX I was wanting to go for a Weber.

I saw an old posting that said use one of these.
Weber 34ADM from XE falcons
Weber info:
34 ADF54 250
Primary jet 122.5
Secondary jet 130
Idle jet 47.5

Spoke with a repair bloke in Sydney who said that the 34ADM was too big even if re-jetted.

He has recommended 32 36 DGV or DGV. Supply and re-kit around $280.
He said the mounting points are the same.

Is it down the 34 ADM being best for a linkage setup on a 505?

What is required to install either one of these.

Any assistance gratefully accepted.

Thanks

505STI(now SR)
 
Despite the advice of your carby dude, lots of people have fitted Falcon webers.

Remember mixture is dependent of air flow. The 2L XN engines will revs harder but draws less air the the Falcon. So the carby ends being quite well jetted.

About the only change is reduce the main jet size in the secondary choke. This improves economy.

I'm taking a square port XN engine here.

At $40-$50 from a self serve wrecker they best bang for buck and plentiful. Try to find one from XE ute. Most manual utes had a carby.

The only real work needed is to change the throttle cable. A few 505 owners have modified the Falcon cable.

Then there is some mods to the air cleaner, most people seem to fit an after market foam type.

I believe Falcon weber thread was lost in the great AF crash of Go Daddy :disappr:
 
Your bloke knows NOTHING.......the car in question was originally my 505 wagon, the carbie fitted was one I bought and rekitted IIRC.
I never fitted the carby, the next owner did and :eek::eek::eek: it drove fantastic and got great economy from what I remember.
If that thread is about, look it up and have a go with the 34ADM.. The 32/36 is a poor second choice in comparison.
The 34ADM has the advantage of the electric choke and they are fairly reliable.
Find a decent, clean looking one if you can. Also, try and get one from a falcon auto, not manual as there will be less wear on the main shaft

Another point I thought of after posting....this guy sells carbies does he not? He's got the 32/36 in stock, grain of salt with that advice IMO.
 
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HONG KONG PUGGY said:
Your bloke knows NOTHING.......the car in question was originally my 505 wagon, the carbie fitted was one I bought and rekitted IIRC.
I never fitted the carby, the next owner did and :eek::eek::eek: it drove fantastic and got great economy from what I remember.
If that thread is about, look it up and have a go with the 34ADM.. The 32/36 is a poor second choice in comparison.
The 34ADM has the advantage of the electric choke and they are fairly reliable.
Find a decent, clean looking one if you can. ALso, try and get one froma falcon auto, not manual as there will be less wear on the main shaft
Click to expand...

Why would a carby designed for a 4 litre engine work on a 2 litre?
I have never seen a Weber give as much performance as the original Solexes, really the only way to go would be to get a fully tuneable DCD, fitted to early Cortina GTs and then spend a few hundred dollars on a dyno with someone who knows what they are doing. DGAVs didn't work for me even with Craig Lowndes father (ex HDT mechanic Frank) doing the tuning.
All the carbies after the DCD were cheaper versions designed for a specific model.
 
G'day Graham,

GRAHAM WALLIS said:
Why would a carby designed for a 4 litre engine work on a 2 litre?.....
Click to expand...

don't really know, guess it's a bit like Rob says.....

Common as is olden times to use a furd side valve v8 carby on just about anything, mainly cos they were common as mud and cheap as chips. I've seen them fitted as singles on 4's and triples on old holden 6's. No one seemed to worry too much about jets 'n stuff, although there was an adjustable main available if you wanted to play.

Had one on a Standard 10, ran as sweet as, didn't need a dyno to tell it was heaps better than the old one :evil:

cheers,
Bob
 
bob said:
G'day Graham,



don't really know, guess it's a bit like Rob says.....

Common as is olden times to use a furd side valve v8 carby on just about anything, mainly cos they were common as mud and cheap as chips. I've seen them fitted as singles on 4's and triples on old holden 6's. No one seemed to worry too much about jets 'n stuff, although there was an adjustable main available if you wanted to play.

Had one on a Standard 10, ran as sweet as, didn't need a dyno to tell it was heaps better than the old one :evil:

cheers,
Bob
Click to expand...

Maybe it's just that I've never been happy with Webers on a 504 engine.
The best carby for go is the early Solex with the manual choke, round port engine..
 
GRAHAM WALLIS said:
Why would a carby designed for a 4 litre engine work on a 2 litre?
.
Click to expand...


Falcon engine 200cid = 126 hp at 4000 rpm,

Xn square port 120 cid = 90 hp at 6000 rpm (guess)


Carburetor CFM =(CID X maximum RPM X 1.414)/3456

Falcon = 309 cfm

XN = 294 cfm

Pretty bloody close -
 
robmac said:
Falcon engine 200cid = 126 hp at 4000 rpm,

Xn square port 120 cid = 90 hp at 6000 rpm (guess)


Carburetor CFM =(CID X maximum RPM X 1.414)/3456

Falcon = 309 cfm

XN = 294 cfm

Pretty bloody close -
Click to expand...

The Falcon being less efficient will suck a lot more air for a given power output I would have thought.
What are the venturi sizes of the Falcon?
Late XN has max power at 5200.
 
GRAHAM WALLIS said:
The Falcon being less efficient will suck a lot more air for a given power output I would have thought.
What are the venturi sizes of the Falcon?
Late XN has max power at 5200.
Click to expand...

I'm not claiming a perfect match. Simply a ball park starting point.

Aluminium head Falcon engines are quite efficient for their time.

The flow formula does not consider power output it considers the engine as a "compressor".

I'm replying to your question "why would the carby work":)
 
robmac said:
I'm not claiming a perfect match. Simply a ball park starting point.

Aluminium head Falcon engines are quite efficient for their time.

The flow formula does not consider power output it considers the engine as a "compressor".

I'm replying to your question "why would the carby work":)
Click to expand...

Just noticed you've used a 200 engine as comparison, 3.3 litres, a lot better than the 4 litres I was thinking of. Maybe wise to check it is one from the small engine.
 
Hi,
When the carby on my old 505 GR died I used the carby off my CX2200, had to fiddle with the linkage a bit.
As to what fits on what, it depends on airflow. I had a Toyota 18R (4 cyl) fitted with a dual throat weber off a Ford Escort. When I was forced to upgrade cars the same carburetor was brilliant on a 2.6L 4M 6 cylinder motor. I never touched the jets for either fitting.
 
I used a webber off an XE for years. I really liked it. I did not notice a huge increase in fuel consumption either.

Shobbz
 
i too have used a xe falcon weber on a xn motor (square port)

i found i had rock solid reliable starting at any temperature with the electric choke

no real change in fuel consumption, maybe it was a smidge better

curious increase in power (i towed a trailer a lot and i found i could hold certain speeds easier then before)

rebuild kits are plentiful, cheap and easy to do by yourself with basic tools

oh and the falcon air cleaner fits snugly under the 505 bonnet, which makes air filters cheaper and easier to get

the only drama, but it wasnt really a drama, was sorting out the linkage, if you have a manual then just use a falcon cable, if you have an auto, you need to adapt the peugeot linkage in order to keep the kickdown cable working, no big woop.

i say do it, you'll be pleasantly surprised

editing this post because i found some old photos which helped me when i did the conversion


 

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Many thanks

Folks,
Thanks very much for the information.
I appreciate your assistance.
505STI
 
Hey 505STI,
Just checked ebay mate and :eek: there are a heap of 34ADM's there these days, some rebuilt ones.
The carby guy who said it was the wrong size for a 2L 4cyl is a bigger goose than ever afetr reading ebay.......there are recommendations there for the carb on 2L engines.

Hey mud, how are you Owen. Geez the 34 is now a popular choice mate, feel like a pioneer?
 
HONG KONG PUGGY said:
Hey 505STI,
Just checked ebay mate and :eek: there are a heap of 34ADM's there these days, some rebuilt ones.
The carby guy who said it was the wrong size for a 2L 4cyl is a bigger goose than ever afetr reading ebay.......there are recommendations there for the carb on 2L engines.

Hey mud, how are you Owen. Geez the 34 is now a popular choice mate, feel like a pioneer?
Click to expand...


LOL my disguise:cool: didnt work, bet it was the photos that gave it away. oh well

i dunno about being a pioneer but it does feel good to have helped out a few people!

to this day still missing the old wagon, geez it drove SO WELL with that carby, and it was just such an allround good/handy/comfortable/cheap/reliable/good looking/simple/great car

my current drive, '81 504, has the same motor, XN1 square port. when the carby starts playing up ill be doing the conversion again, but the original carby is doing fine at the moment
 
mud said:
i too have used a xe falcon weber on a xn motor (square port)

i found i had rock solid reliable starting at any temperature with the electric choke

no real change in fuel consumption, maybe it was a smidge better

curious increase in power (i towed a trailer a lot and i found i could hold certain speeds easier then before)

rebuild kits are plentiful, cheap and easy to do by yourself with basic tools

oh and the falcon air cleaner fits snugly under the 505 bonnet, which makes air filters cheaper and easier to get

the only drama, but it wasnt really a drama, was sorting out the linkage, if you have a manual then just use a falcon cable, if you have an auto, you need to adapt the peugeot linkage in order to keep the kickdown cable working, no big woop.

i say do it, you'll be pleasantly surprised

editing this post because i found some old photos which helped me when i did the conversion
Click to expand...

Hi Mud,

Can you tell me how you hooked up the ford cable to the peugeot pedal? I have a 504 and am wondering how I get the ford cable to connect to the accelerator pedal.
Cheers.
 
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