FAO mini1071s
Turbo Mini Forums

hello mate decided to get off my arse and try something myself lol, these are the results i got for that turbo what do you think, any good?

Edited by t3gav on 4th Apr, 2006.

at 5000 you are the wrong side of the surge line!

at 7000 your miles off the sweet spot of the map too.

What turbo is that? Its not ideal for that application.

Alex

AlexF

You try getting a turbo in the 'sweet spot' for a 1300 engine at 2.5 pressure ratio's!!!!

I know exactly what turbo it is just by looking at the map LOL!

take a guess

I'm guessing from my own turbocalc spreadsheet that you're looking at a 1380 - and can only be a BMW twink head?

Quite how you'd consider this going through any currently available mini clutch is another thing....

I don't need to guess on the turbo - I know what it is.

I'd guess to... but Gav's removed the pic lol


alex

AlexF

cheers pete very helpful! the turbo for those that dont know is the new gt2554r which i think is the replacement for the t25 so i was hoping for good results but i think my calculations are out, will investigate. Engine is 1293 5 port head dave lol.

1293?
I think you're overly optimistic about the efficiency then... Definately knock this down by 5% and give it another blast.

As Peter said - there are things you can do like comapre already known results. This allows you to make more educated guesses... Turbine size, trim and A/R again makes it all complicated though!

Edited by turbodave16v on 5th Apr, 2006.

surely the plot would be in a straight line from left to right as the pressure ratio doesnt seem to change? or am i beig silly?

is this turbo bigger than the standard t3?

Google T3 40 trim and look at the results.

But bigger? Yes, the T3 IS physically bigger - in that it'd need a carbboard box to put it in.

thanks dave, am understanding it a bit better now