Weber and Turbo
Turbo Mini Forums

Hi,

I have a T3 turbo and a weber 45 carb, is there anyway off using the weber carb instead of the standard SU carb?
I have seen this done on a mini before, but is it just a case of making up my own plenum chamber with all the appropriate connections?

Thanks
Wayne.

It will need to be sealed if you're using a blowthrough setup. It will be ok if you use a suck through system as the carb is operating under normal conditions.
Are you sure it wasn't a Dellorto carb you saw being used ?
Why do you want to use a Weber when the SU is an excellent piece of kit ?

Phil.

WWW.TURBO-MINI.COM

Thanks

The reason I want to use the weber is because I have already rebuilt the weber carb and have got all the bulk head cut already. So I thought I may aswell try it wih the weber to save it from going to waste, and it's different over the usual carb.

Stay well away....

But if you must be determined to give yourself months of hassle.... The first thing you must do is stick a lambda probe into your downpipe, and purchase one of these mixture readers...

The only webers suitable for blowthru are the more modern 151 and 152 series. All others need a fair few tweeks doing, but even the 151/152 has to be modded.

D

hmm SU carb it is then

I have a Dellorto 45M from a Lotus Esprit fitted in my Mini and can second the opinions given. The carb is a great piece, but jetting it to suit a turbo Mini is an exercise. Modding a Weber to suit blowthru turbo is not so easy, you may get away with modest boost but most likely not.

I ran several years with SU and wanted to try Dellorto for fun of it. I have NOT got more power with 45, HIF44 is an excellent carb for the job. Plus it is simple. Dellorto has some details that outperform SU but they are not big enough benefit compared to SU.

With experience from both alternative, my advice is to stick with SU for excellent performance and simplicity. Mark my words, even with SU you need to do some tuning ewspecially with non std engine but it will be a lot easier than starting from scratch.

For more info see www.geocities.com/jharkola and follow "new carb" or something.