Remote carb; risk for mixture separation?
Turbo Mini Forums

Since long I have been working on building a supercharger on the A-series, hardly have any time to be in garage so this has been taking sooooooo long.
Now I want to give the project a bit of a push.

Anyway I thought I had figured out how I wanted to fuel the thing but am now getting cold feet...

This is the setup I was thinking about running:

This is the manifold going to the head:


Now lately I am wondering if the three 90 degree turns won't separate the fuel from the air because the droplets are heavier then the air and so creating a river of fuel iso the wanted air/fuel mixture.

Anyone any experience with remote carbs or simular configurations?


Han

Dazed and Confused....

i think cylinders 1 and 2 will probably run richer than 3 & 4 with that set up

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Those silicon hoses between the carb and manifold will colapse with closed throttle

Edited by Sprocket on 13th Mar, 2010.

that is a loooonnnggg way for the fuel to go

Yes i moved to the darkside

Instagram @jdm_brett

han , i ran a ft of intake pipe to a turbo on a v8 using a 2inch su ,after i had wraped water pipe around the pipe ,and put a sheet of copper under the compressor housing , it would tick over ,but it always a bit rich and loading up at tickover ,that was with just a ft of pipe ,what yours would be like with several ft i shudder to think ,best to put the carb as close as you can to the blower ,up under the scuttle .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

do as rob say's
there's no real reasson why you cant move it up there.....

As it is, unless there is something I can't see, you'll have no fuel out of the carb anyway.

How are you pressurisig the float bowl?

There doeas seem to be no reason to move it closer either.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

What about putting the carb along site the brake servo. Odd shape inlet manifold to say the least but would get the carb closer to the head. Supercharger would suck push the air down the pipe on the rad site though the intercooler then up to the carb?
Samco do do charge pipes which has a spring kinda think in them which would be much better.

Guys, thanks very much for the replies!

I did think I was in trouble but not this much... :)

Collapsing hoses under vaccuum, damn another rookie mistake but fixable.
It's a NA carb for test fitting, I have a turbo one..
Joey, you mean because of the 90 degree turn shortly before the vertical ish pipe of the manifold?

Ok agreed, distance is way to long.
I did look for ways putting the carb closer but the space is very limited but especially height is not enough for a carb to be fitted next to the servo. I double-tripple checked.

A friend said inject it.....
But I m afraid of my very limited FI knowledge (even less then... :$)..

Moreover there is not much space here aswell..
It would mean pointing injectors upwards into the runners if that is possible at all.
But I guess in that area there is too much heat from exhaust manifold...
Remains single throttle body (doesn't Jani have it that way?).

Looking at all above its probably best to mount the SC in front of the engine (like Jani did)....
That sets me back quite a bit..

More thoughts are welcome..
Thanks again for your input..

Dazed and Confused....

try to get a stromberg cd carb , like an su but flat topped theres a picture on here somewhere .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Good one, other carbs, there must be some around that require less height.

Looking into the enginebay some more I am going to see if and so how much I can turn the servo to create more space.
Or maybe ditch it all together eventhough I'd rather keep it if possible.

More carb suggestions?

Edit:
Just checking; do you guys think that when the carb is closer, like between remote and SC will this give a situation that works?

Edited by Yo-Han on 15th Mar, 2010.

Dazed and Confused....

run an earlier brake master, and if you need it, you can put a remote servo under the wing if you like!! no need to have it in the bay at all

how about carb facing forwards ,between servo and blower ?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Real big thanks for all your input guys!

So I did some looking into things.
I have been doing some digging into the injection possibilities and now want to seriously look into the possibilities with my setup.

I will pull off the head, manifold, SC combo to look at possibilities to fit throttle bodie(s).

I will start a new thread under the EFI section.

Thanks again

Dazed and Confused....