What happened to Picky's project

Post by **minor_hickup** » Fri Oct 26, 2007 3:49 pm

Did I miss the completion of Picky's car? I would have brought it up earlier If I had internet access, but Practical performance car had an article on turbo charging a Rolls Royce where they used a turbo to blow through the original SU carbs. They got around upsetting the mixture by feeding boost pressure into the dashpot (i think) and boost pressure +3psi into the float chamber to stop the pressure forcing fuel back into the float chamber. This apparently fools the carb into behaving like theres no air being forced in.

Post by **bigginger** » Fri Oct 26, 2007 3:52 pm

He put it on hold while he went away to study, IIRC
a

Post by **minor_hickup** » Fri Oct 26, 2007 4:05 pm

Ahh OK. Well when I read the articles I just thought of this project.

Post by **bmcecosse** » Fri Oct 26, 2007 5:51 pm

" by feeding boost pressure into the dashpot (i think) and boost pressure +3psi into the float chamber "

Which is exactly what MGRover did with the Turbo Metro - we tried to tell Picky that!!
He continued to try using a normal SU instead of a Turbo version.

Post by **minor_hickup** » Fri Oct 26, 2007 7:43 pm

I see, although the carbs used were twin SUs standard to the roller. So they must have engineered the solution to allow the use of standard carbs rrather than turbo items. I'm sure in this application the turbo carb would be too small. It does not say however, how they sealed the throttle spindles from leaking.

The chap who has engineered all this is a guy called Charlie Broomfield, whos just finished his 27litre meteor engined rover SD1. Apparentlyy this is a know good system as it was originally used and developed on a turbo'd mustang.

I just thought it might be of interest given that they were both attempting to force feed SU equipped motors.

Post by **bmcecosse** » Mon Oct 29, 2007 10:51 pm

The MG Metro Turbo carb will be fine for Pickys car - since the air is being blown into the engine, carb size will not be important.

Post by **picky** » Wed Oct 31, 2007 6:36 pm

hello people, long time no see.

What happened to Picky's Project

It is sat in my parents garage a few hundred miles away

it was a gap year project, but I ran out of time and money, I'm currently studying engineering at lancaster university, The project will be given some more time over the christmas holidays. It currently runs but very unreliable and the power output is so erratic that it is impossible to drive (it either stalls as you try and pull away or the rear wheels spin and you loose control) Im looking for a cheap metro turbo carb (yes I have finally given in bmc!) and a fuel pump from a fuel injection system (preferably a lucas 4fp)

Happy Minoring, hope to update you all soon,

Picky

Post by **bmcecosse** » Wed Oct 31, 2007 8:27 pm

Or - do as others have done and go SUCK THROUGH. It works.

Post by **picky** » Thu Nov 01, 2007 5:24 pm

do as others have done

where is the fun in that???

Post by **bmcecosse** » Thu Nov 01, 2007 10:08 pm

You will be able to drive the car - and it will be fast !! Sounds like fun to me.