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Hi,
Quick question...can you replace a weber carburettor like for like? Am assuming I need to put in same jets etc, but if I do that, should it be fine...or is there some fine tuning I need to do?

Thnx

Hi

I always would recommend a fine tune on a rolling road with someone who "really " knows the Weber's!

You will have a lot more fun with your Car and in most cases save a lot of money

And remember: weber 45 is not weber 45.

There are different types for different applications...

As above, there were a few different versions made. They should be another number after the “40 DCOE” on the carb. You can see an example of the difference in the progression circuit on the link below

https://www.weberperformance.com.au/inf ... info_id=26

He has the suffix in the title, 13 which is fine for a mini. The float level, idle mixture screws, chokes etc will need checking/changing. Rolling road or after gauge in the car is the only way to get the best from the set up.

Daft question time, but how do you know what Weber 45DCOE is suitable for which particular application, is there an application list or something? Back in the '80s I put a 45DCOE on my Mini but I never gave it any thought to what application fitted what, it was just a 45DCOE to me, it came from somewhere who normally did Ford stuff rather than a Mini specialist (it was cheaper!!). Seemed to work ok when jetted up though so I guess I was lucky.

I have always heard the Weber 45 DCOE 9 is the magic bullet for a single Weber set up. When Longman did my split
Weber set up back in 1975 they used two Weber 45 DCOE 13s. It is my understanding the 9 and 13 as well as other
numbers have to do with location and number of progression holes. Years ago now when Peirce Manifolds was buying
every Weber on E bay I got concerned that my only Weber at the time went when I sold my race car. I quickly grabbed
up as many as I could. I ended up with around 17 a 40 a bunch of 45s a $* IDA complete kit as well as a $* IDA intake.
a couple of progressive two barrels and a pile of intakes. Also still have my split set up. As I have no plan for any of
it I should move it along. Steve (CTR)

As usual guys...thanks for all the input..

I haven't embarked on anything yet as I thought I'd better understand the full picture before doing anything.

I will leave as is for now...and start to put a plan together as its sounding like there are quite a few variables to consider here.

Cheers

What are the best 40’s for a Mini?

rpb203 wrote: ↑Sat Jul 18, 2020 3:44 pm What are the best 40’s for a Mini?

151, ie modern replacement performance carbs.

Most 40 DCOE’s are OE fitted, Lotus T/C for example, these are OK but high Suffix numbered carbs are often from Italian cars that have progression drilling’s etc for emission control and not performance. Seen much wasted money people buying these off eBay Thinking they have a bargain and never getting a car to run right on them.

For 45 DCOE’s 9 and 13 were the ‘performance option’ back in the day, 9’s were fitted on Aston Martin DB4 GT for example. The old special tuning MGB’s specified 13’s. Either work on an A series.

That’s super many thanks.

Hipwell wrote: ↑Sun Jul 19, 2020 1:22 am

For 45 DCOE’s 9 and 13 were the ‘performance option’ back in the day, 9’s were fitted on Aston Martin DB4 GT for example. The old special tuning MGB’s specified 13’s. Either work on an A series.

Just had a look at the 45DCOE that I used on mine way back in the '80s. It is a '152', any idea what its correct fitment should be? I suspect maybe a Ford as I got it from a Ford specialist. It seemed to work on my Mini fine though.

Time Bandit wrote: ↑Tue Jul 21, 2020 1:30 am

Hipwell wrote: ↑Sun Jul 19, 2020 1:22 am

For 45 DCOE’s 9 and 13 were the ‘performance option’ back in the day, 9’s were fitted on Aston Martin DB4 GT for example. The old special tuning MGB’s specified 13’s. Either work on an A series.

Just had a look at the 45DCOE that I used on mine way back in the '80s. It is a '152', any idea what its correct fitment should be? I suspect maybe a Ford as I got it from a Ford specialist. It seemed to work on my Mini fine though.

That’s a modern universal performance carb, fine on most cars, modern engines have caused them to come out with 4 and 5 progression hole versions now too.

Hipwell wrote: ↑Tue Jul 21, 2020 1:30 pm

Time Bandit wrote: ↑Tue Jul 21, 2020 1:30 am

Hipwell wrote: ↑Sun Jul 19, 2020 1:22 am

For 45 DCOE’s 9 and 13 were the ‘performance option’ back in the day, 9’s were fitted on Aston Martin DB4 GT for example. The old special tuning MGB’s specified 13’s. Either work on an A series.

Just had a look at the 45DCOE that I used on mine way back in the '80s. It is a '152', any idea what its correct fitment should be? I suspect maybe a Ford as I got it from a Ford specialist. It seemed to work on my Mini fine though.

That’s a modern universal performance carb, fine on most cars, modern engines have caused them to come out with 4 and 5 progression hole versions now too.

Ta for that, I'd not got a clue!