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Home > 998cc > How I converted a 998 NA to a 998 Turbo in 20 Hours

wil_h

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9258 Posts
Member #: 123
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Betwix Harrogate and York

This is how I did it. As I'm not a computer nerd, this only works in Microsoft Explorer as I converted it straight from Word.

If anyone can fix it or tell me how, feel free

http://www.twin-turbo.co.uk/Wil/HOW_I_CONV...IN_20_HOURS.pdf

Edited by wil_h on 27th Aug, 2007.

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.


TurboDave16V
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10979 Posts
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SouthPark, Colorado

Great stuff.

Is it a High compression engine? - or rather what CR is it?

On 17th Nov, 2014 Tom Fenton said:
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Paul S

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8604 Posts
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Formerly Axel

Podland

Well done.

You make it look very easy.

Are you prepared to divulge the cost?

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."


wil_h

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9258 Posts
Member #: 123
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Betwix Harrogate and York

CR is a little over 9:1 with flat top pistons.

Total cost was less than £1k. hers is a breakdown

Mirage Manifold £350.00
Turbo free
Oil feed £50.00
Carb free
Inlet manifold free
exhaust free
Head £200.00
Pump £20.00
Regulator free
Intercooler £20.00
Pipes £10.00
Bits and bobs,
gaskets and
fuel pipe
and clips etc. £100.00
actuator free

Total £750.00

I reckon all the free bits could be got for £250

Edited by wil_h on 21st Aug, 2007.

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.


webba

487 Posts
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Senior Member

email me the word doc and ill convert it to pdf webbaldo@gmail.com


joeybaby83

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6274 Posts
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Isle of Man

20hrs, bet you had a sore back the next day!

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

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wil_h

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9258 Posts
Member #: 123
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Betwix Harrogate and York


On 21st of Aug, 2007 at 07:48pm joeybaby83 said:
20hrs, bet you had a sore back the next day!


Very good Joey, I actually did it over 10 days. 2 hours a night between 8 and 10pm (after my boy goes to bed). So in reality, I had oily hair and an aching back every night for nearly 2 weeks.

It wasn't the only thing nagging me when I got back into the house either!

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.


Rob H

4314 Posts
Member #: 700
Formerly British Open Classic

The West Country

Nice one, couple of questions as ever.

I noticed you removed a 12G295 head and fitted a 12G295 head (with standard chambers) I'm guessing that there were a few differences between the heads? if so what where they if you don't mind me asking?

Also I'm guessing the you didn't connect up the water cooling to the turbo, and you kept the MG cam, yes? no?

As an aside I've converted the page so it can be viewed in firefox and all good browsers, if you pm me you email address I'll send it over to you.

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wil_h

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Betwix Harrogate and York

The only differences between the heads is that the chambers are bigger (28cc compared to 24cc) and the exhaust valve guides were relived a bit to stop them binding.

MG cam has been kept and no I didn't connect up the water cooling (although I might do at some point in the future).

I have the page in PDF now, so it should be ok

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.


Bat

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Bermingum

Hi,
Wil .. You'll need to update the link at the top, as it doesn't work anymore :(
Cheers,
Gavin :)

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Ben H

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Melton Mowbray, Pie Country

Try this

http://www.twin-turbo.co.uk/Wil/HOW_I_CONV...IN_20_HOURS.pdf

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

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rubicon

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I like granny porn.

LONDONSHIRE

wil, good going!
but i was just wondering what you did about the valves clearing the pistons?
do you need to pocket the block?

On 2nd Oct, 2009 Vegard said:


On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo


These new modern turbos with their quick spool up time, would make the competition harder.


On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER)


rubicon

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I like granny porn.

LONDONSHIRE

my bad ive just realised you used a cooper head (295)..lol

On 2nd Oct, 2009 Vegard said:


On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo


These new modern turbos with their quick spool up time, would make the competition harder.


On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER)


Bert

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67 Posts
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Advanced Member

Ayrshire, Scotland

This might seem like a silly question, but why have u got 2 manifolds...


Mirage manifolds
Metro turbo Carb and manifold




Turbo Phil

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Lake District

Mirage is exhaust, the other manifold is the inlet.

WWW.TURBO-MINI.COM


Bert

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Ayrshire, Scotland

cool, cheers/ up to speed now



Carl S
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Bristol

Hows this one going Wil? Still running alright?


wil_h

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9258 Posts
Member #: 123
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Betwix Harrogate and York

It got a bit rusty to get it throug han MOT, so took it off the road last year. As soon as I finnish the hilclimber I'll be on it. Should be back on the road this summer for IMM.

I have covered 5,000 mile in it since the conversion, no problems.

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.


wil_h

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9258 Posts
Member #: 123
Post Whore

Betwix Harrogate and York

So, 20 hours to build and 1 hour to take to bits.

It was a happy 5000 miles but the Sprint has taken it's place. I've sold the car and all the turbo gubbins will be for sale soon (and the funds from that will find their way to John K over the winter).

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.


pinkyandnobrain

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Pretoria South Africa

Oooooh sound interesting.
A twink motor in the sprint should be pretty unique, or is the hillclimber getting a 7-port ?

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Nial

78 Posts
Member #: 9073
Advanced Member

Edinburgh

I know this is an old thread but does anyone have a link to Wil's document, the links above don't work.


[Edit] Don't worry, I found it over at turbo-mini.com

http://www.turbo-mini.com/62147.html

[/Edit]

Nial.

Edited by Nial on 6th Sep, 2013.

Home > 998cc > How I converted a 998 NA to a 998 Turbo in 20 Hours
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