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Paul S

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On 12th Nov, 2009 tim.limbrick@hotmail.co.uk said:
no shit tha mini turbo in the mag is wank i hate the hole thing , i feel like saying the hole point of having a turbo is to make the engine have a compressible amount of air in the cylinder instead of just what the piston can pull in in a vacuum so why would you bother putting a turbo engine in then start restricting the air with those bends and adding extra pipe witch will just make the lag worse lol and it also makes the air turbulent on those bends witch will effect the way it starts to burn in the cylinder

but yea having a clutch mounted turbo is all well if you enjoy lag, you need to think about retarding the ignition to compensate for the extra space you are creating with the longer manifold plus here are a few things you may wona look at before you start putting that horribly welded thing on your engine

exhaust pulse;
flow in pipes;
raynold number;
boundry layers;
computational fluid dynamics;
incompressible fluid flow;
compressible fluid flow;
exhaust lengths :

all these things need to be taken into account before you will get any power out of it

you may wona look at acoustics to :)


You are obviously an idealist.

Reality is that you can only use parts you can make yourself, with the skills you have available within your price range.

Apply all the science you want, you then have to fit it in the mini engine bay.

Don't knock it until you have done something better yourself.

Edit: The term is Reynolds Number. Also boundary layers and when was air incompressible?

Edited by Paul S on 12th Nov, 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."


t@z

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i was thinking just BREATHHHH

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MikeRace

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Force Racing ICT Dept Manager Miglia Turbo Am frum Yokshyer tha noes!

I think itll work, fuck all that science shit!

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


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wil_h

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Betwix Harrogate and York

I don't see any lag in that system, very short IC install, the bends are shit though. I think it would be noticable if you changed them. My IC pipes are twice that length and I have no noticacle lag.

I agree with paul, design is not just about the ideal answer as far as efficiency goes. Space available, maintenance, installation and manufacturing all must be considered.

As I have said before, to my mind it is better to keep the turbo behind the block.

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

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


tim.limbrick

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surrey

ok haha i have tried it actually *tongue* plus this is tru fluid is not compressible but unfortunately for you its a term for something else you obviously don't understand so don't knock it till you've tried it.

fucking hell was only trying to lend a hand.


Paul S

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On 12th Nov, 2009 tim.limbrick@hotmail.co.uk said:
ok haha i have tried it actually *tongue* plus this is tru fluid is not compressible but unfortunately for you its a term for something else you obviously don't understand so don't knock it till you've tried it.

fucking hell was only trying to lend a hand.


Ok mister 7 posts, explain it to me.

By the way, I'm a Hydrodynamicist by profession.

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."


tim.limbrick

28 Posts
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surrey

explain what ?

i am not sure why your so stressed its not like its your mini in the mag , is it ?


wil_h

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Chill Tim. You obviously have some knowledge of the subject and can add to the forum. The problem is your post came across as a little patronising and 'look what I know and you don't'.

As above, I would also say some of it seemed to be bollocks.

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

www.twin-turbo.co.uk

On 2nd Jan, 2013 fastcarl said:

the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


GaryOS

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Dublin, Ireland

On 12th Nov, 2009 tim.limbrick@hotmail.co.uk said:
ok haha i have tried it actually *tongue* plus this is tru fluid is not compressible but unfortunately for you its a term for something else you obviously don't understand so don't knock it till you've tried it.

fucking hell was only trying to lend a hand.


Well, I'm actually studying fluid dynamics reight now. I'm doing a module as part of my degree which includes theoretical and computational fluid dynamics.
Fluid can be comressible. I don't think the internal combustion engine would be too sucessful if all fluids were incompressible. I imagine an incompressible fluid evenly distributed at a ratio of 14.7:1 within a compressible fluid would still be considered compressible. Where does incompressible flow come into flow within manifolds and induction pipework?

P.S Given the fact that you cannot spell the name of one of the most significant names and parameters in fluid dynamics I fear that you don't understand it either.

P.P.S I am crap at fluid dynamics as my recent test and assignment results will prove but you don't appear to be much hotter at the subject than somebody who breezes through a text book

P.P.P.S your spelling and grammar pisses me off

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse *happy*


On 30th Apr, 2010 Rod S said:
Gary's description is best


apbellamy

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Welcome to TM Tim, I'm sure you'll get on fine here *wink*

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


t@z

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this thread just became my favourite :)

Edited by t@z on 12th Nov, 2009.

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tim.limbrick

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Member

surrey

i did not mean for it to come across like that and non of its bull iv been studying the flow of gas, air and fluids in pipes for a year now and will be presenting this after Christmas as a metro turbo manifold application, i find the way you change the characteristics of an engine just with the manifold and the flow interesting and the more iv gone into it iv actually enjoyed it. i built my mini turbo about a year ago and ts a on going project as i cant do it all the time as its at my mothers house in the north. i am a motor sport engineer as profession ad i do respect other peoples ideas i am just trying to lend a hand as i am bord sat on my arse right now and thort id come on here and have a look .


tim.limbrick

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surrey

oh and fuck you i am dyslexic and i do try to spell better and have done my hole life and i am sorry i was born like that but i cant do anything about now can i


GaryOS

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Formally spanner181187

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You can spell check

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse *happy*


On 30th Apr, 2010 Rod S said:
Gary's description is best


tim.limbrick

28 Posts
Member #: 7112
Member

surrey

i do but sometimes some slip the net, uno


tim.limbrick

28 Posts
Member #: 7112
Member

surrey

sorry this aint some kind of spelling competition is it ?



sorry wrong forum, i ment to be on turbomini's


John

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Chill out buddy. Stressing and effing at the regulars won't get you anywhere.

If something is worth doing, it's worth doing half of.


tim.limbrick

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im chilling don't worry


Tom Fenton
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You need to wind your neck in buddy.
I don't know what other forums you go on, but you won't flummox people on here with a few big words that I also don't think you really understand. Unlike some other forums there are some pretty clued up people on this one. Paul S for example probably knows more about fluid dynamics than the rest of us ever will, so as I said, wind your neck in.


On 29th Nov, 2016 madmk1 said:


On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else


Like fuel 😂😂


GaryOS

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So are you going to elaborate on your initial post? Was your study experimental, computational or both? How did you determine the free stream velocity to find the boundary layer? Surely such high velocity fluid flowing in such a narrow region has no area where the velocity equals 99% of the free stream velocity.
What assumptions did you make to simplify the Navier-Stokes equations? Where is imcompressible flow applicable?
How did you deremine the inertial and viscous forces of the Reynold's number? Did you have to define it at a specific rpm, boost and egt?
Enlighten me

Edited by GaryOS on 12th Nov, 2009.

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse *happy*


On 30th Apr, 2010 Rod S said:
Gary's description is best


Paul S

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Formerly Axel

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On 12th Nov, 2009 Tom Fenton said:
Paul S for example probably knows more about fluid dynamics than the rest of us ever will


I think Gary OS has taken over my role as the forum smart arse *happy*

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."


t@z

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On 12th Nov, 2009 GaryOS said:
So are you going to elaborate on your initial post? Was your study experimental, computational or both? How did you determine the free stream velocity to find the boundary layer? Surely such high velocity fluid flowing in such a narrow region has no area where the velocity equals 99% of the free stream velocity.
What assumptions did you make to simplify the Navier-Stokes equations? Where is imcompressible flow applicable?
How did you deremine the inertial and viscous forces of the Reynold's number? Did you have to define it at a specific rpm, boost and egt?
Enlighten me

Edited by t@z on 12th Nov, 2009.

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GaryOS

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On 12th Nov, 2009 Paul S said:

On 12th Nov, 2009 Tom Fenton said:
Paul S for example probably knows more about fluid dynamics than the rest of us ever will


I think Gary OS has taken over my role as the forum smart arse *happy*


I am honoured that you would even consider such a possibility *surprised*

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse *happy*


On 30th Apr, 2010 Rod S said:
Gary's description is best


tim.limbrick

28 Posts
Member #: 7112
Member

surrey

whatever i cant even b arsed to talk on here any more its actually sad your all having a go at me and all i was sayin is that i don't like the way that car in the mag was set out and trying to lend a hand but it seams that iv brought out a much greater hand out of the woodwork so here u go t@z have your fun getting some answers from this guy

oh and p.p.p.p s or whatever i cant spell , don't care


supermotolee

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hahahahahaha

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[quote=fab,8th Oct, 2010]fuck off

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