Remote Turbo Manifold
Turbo Mini Forums

We had similar discussions about two years ago about how the flows converge..

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=149485

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Caught red handed... :) Indeed not from my own experience, working on a theory. I read an article on the internet about turbo manifold design that got me thinking about this.

I don't think this is a big problem. But as you're going all the way with your manifold, equal length, smooth curves, I thought I'd mention my theory.

Regards,

Thimo

http://projects.ferrenzo.nl/

Cutting's done, now just need to ruin it with my welding.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Hum, very tidy.

Looks very nice
Just a thought : [ don't forget i'm not that up on mini engine bay packaging ]
couldn't you run the ex. manifold over the top of the intake to the area where your turbo is currently , ie turn the 1st 90 bends out of the head upwards

will that fit in?

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

It looks like it'll fit, my only concern is its close to the bonnet and i don't know how heat resistant CF is...

Edited by sturgeo on 5th May, 2009.

I've just measured up to be sure and it fits without a problem.

The highest point of the compressor housing is close to the bonnet line but no higher than a standard alloy rocket cover.

There is plenty of room between the engine and the inner wing line, although we do not have an inner wing.

We might need to fit some reflective heat shield to the underside of the CF bonnet.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Be interested to see how it turns out. Looks cool Paul.

Lightweight racer coming soon.

Paul

You've done it all wrong. This is the way to do it...



http://cgi.ebay.co.uk/mini-metro-turbo-and...93%3A1|294%3A50

In the 13's at last!.. Just

I wish I had done mine like that.

Spent most of the weekend welding the thing up. Because of the distortion I was having to continually check for fit and make adjustments. Very time consuming.

Nearly there now. Start on the downpipe and the dual wideband system next.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Stunning as usual Paul.

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

www.twin-turbo.co.uk

It certainly looks good.....

What schedule (wall thickness) are you using there - I'm interested in the distortion issues.

Also looking forward to seeing the dual wideband design you talked about, I'm wondering if a partial copy could be made on a Metro T3 cast manifold (ie, one off one of the outers only, and the second off the centre) using the first fitting threaded into the casting and the rest welded.

Schrödinger's cat - so which one am I ???

Rod,

It's Schedule 10 pipe from All Stainless, nominal 1" bore, but a bit bigger:

http://www.allstainlessltd.co.uk/products....hot_nb_pipe.gif

The plan is to weld a boss to each of the branches. 1/8" BSP stainless steel compression fitting taking a 6mm OD, 4mm ID stainless steel pipe across to a couple of "sample tubes" welded to the downpipe.

Each sample tube will have a lambda boss on the end and another compression fitting on the side. They will sit vertical.

The 4mm bore tube should flow enough exhaust gas to get a sample but not bleed off too much to limit boost.

I've successfully drilled and tapped my N/A metro manifold at 1/8" BSP to fit thermocouple fittings, so should be no problem with the turbo manifold.

Edited by Paul S on 11th May, 2009.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

In reverse order...

Didn't expect tapping the cast manifold to be an issue, but I wouldn't want to weld to it for sure... but welding after the first tapped fitting shouldn't be an issue.

4mm "feels" too small - no maths to back this up - but you may not maintain the minimum temperature required at the lambda semsor - depends on the length of the tube, hence interested to see the layout.

Sitting the sensors vertical is, I agree, a very good idea where the small bore tubing will cool off very quickly and allow condensation.

At Sch 10 it's still slightly under 3mm thick - so I'm slightly surprised you are having distortion issues. However, complex shape and short runs doesn't help.....

Schrödinger's cat - so which one am I ???

The sensor will get plenty of heat from the downpipe. They will also sit close to the manifold. The sample tube will be 25mm stainless with a lambda boss welded on the top and welded into the downpipe.

4mm may be too small, but I do not want to loose too much boost by making it too big. Also if it is too small, there will not be enough flow at cruise/part throttle. Suck it and see.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Crude sketch to explain:

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Paul i dunno why but I pictured the bosses for the lambdas being upstream of the turbo and the vent pipes running back to the downpipe........

"So wat we gonna do tonight Brain?"
"Same thing we do evernight Pinky!"
"Try to take over the world!"

As they say, a picture speaks a thousand words....

Sensor body temperature should easily be maintained in that configuration and anything the gas temperature drops in the (shorter than I was expecting) 4mm tube should easily be recovered by the hot mass of the sensors and large connectors to the downpipe.

Schrödinger's cat - so which one am I ???

That looks well smart, nice one.

widebands run fine in tubes incerted in a tailpipe. there own heaters do the job fine, though life expectancy is somewhat reduced compared to having the lambda right up near the turbo etc. i wonder who came up with that idea

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Credit to you I'm sure EVO!
A great idea! :)

oh - and a fine looking manifold...

On 11th May, 2009 evolotion said:
i wonder who came up with that idea

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."