How do you select which turbo to use?
Turbo Mini Forums

Just wandering how much though TM members put in when choosing which turbo to go for.

Calculate the CFM and Pressure Ratio you require & read loads of compressor maps.	10 Votes - 0%
Go down the magic scrap yard with a tape measure and find something about the right size, it\'s only an air pump after all.	2 Votes - 0%
Pick something based on what other TM members use.	21 Votes - 0%
Use the biggest turbo you can find, bigger turbo more power.	0 Votes - 0%
Go on the recommendation of your mate in the pub.	1 Votes - 0%
What\'s a Turbo?	4 Votes - 0%

I'm going for the GT17 after seeing Roberts results.

In the 13's at last!.. Just

I think one missing from your list is: 'Find a car with similar HP to what you want and investigate the turbo fitted'. I think this is where many people start and where the R5 T2 and GT17 came from.

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

A man without a project is like a like a woman without a shopping list.

look at a turbo see if it looks nice and use it :)

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

You also missed 'Use the factory option for the engine' - i.e. Metro T3

and also,
''there's no play in the shaft so il use that one''

What a bunch of amateurs :)

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."

I ticked the first one, but maybe better to put 'pretend to...' in front.

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

I think its a combo of:

Calculate the CFM and Pressure Ratio you require & read loads of compressor maps.

and..

Pick something based on what other TM members use.

i still havent decided on a turbo for the long awaited 998 build, i have pluged the numbers for various garrett turbos, gt15's, gt17's and t2's etc, but still not found any that sit on the island as id like yet, need to start exploring kkk, mitsi and other manufacturers turbo ranges/maps

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

"did you know you can toast potato waffles?"

i used to just go for whatever turbo i guessed would suit then tried bigger and smaller turbo's in the range till i had a happy compromise of lag and power. Now i have chose a turbo based purely on calculations, sadly there quite uncommon in this country but interesting to see if it works or not lol

Edited by evolotion on 10th Mar, 2010.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

I'd like to be able to do all the calcs, but it's beyond me as I have no in depth knowledge of the topic,

So, I let others do the clever stuff, and post up their results, then go with what tehy've found most successful.

To be honest, it was Roberts GT17 thread that made my mind up, and his RR power figures just confirmed that as the correct decision.

Mr. Prawn, the friendly Crustacean- slowly making steps towards forced induction.

Prawn this takes alot of the hard work out of it :)

http://www.squirrelpf.com/turbocalc/

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

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."

On 10th Mar, 2010 Paul S said:

On 10th Mar, 2010 evolotion said:
Prawn this takes alot of the hard work out of it :)

http://www.squirrelpf.com/turbocalc/

And gives the wrong answers

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.