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First Generation MINI Tuning Tuning the first generation MINI 2001 - 2006
May 5th, 2006, 09:44 PM
MINI2 Master
Join Date: Jul 2005
Location: Beds Cambs Northants
Posts: 1,994
Local Time: 06:33 PM
Do you think its rich or lean......
First M45 Cooper S to run a 12 (12.96@105)
On Nitrous 11.16@123 0-100 7.1991
It's not how much you spend but how well you spend it
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May 5th, 2006, 09:59 PM
only the brave!
Join Date: Dec 2004
Location: Lincs
Posts: 1,249
Local Time: 07:33 PM
ahh not good, what car is that from?? Mini?? running what mods??
May 5th, 2006, 10:00 PM
F43i0
Join Date: Feb 2004
Posts: 3,718
Local Time: 06:33 PM
Nos related
May 5th, 2006, 10:07 PM
MINI2 Senior
Join Date: Mar 2005
Location: Nailsea
Posts: 360
Local Time: 06:33 PM
Oh dear 1320
That looks very unfortunate, which brings me on to what oversized forged pistons are you going to be running?
I want the ones that FTR are running , but not getting any luck.
Any ideas or is your block ruined beyond a bore?
May 5th, 2006, 10:10 PM
MINI2 Master
Join Date: Sep 2003
Posts: 2,291
Local Time: 01:33 PM
It doesn't look rich OR lean to me.
It looks like a huge chunk of your piston is missing.
May 5th, 2006, 10:36 PM
MINI2 Master
Join Date: Jul 2005
Location: Beds Cambs Northants
Posts: 1,994
Local Time: 06:33 PM
Yup nitrous related, blocked fuel jet, so always make sure your injectors can cover what you're spraying.
First M45 Cooper S to run a 12 (12.96@105)
On Nitrous 11.16@123 0-100 7.1991
It's not how much you spend but how well you spend it
May 5th, 2006, 11:32 PM
MINI2 Senior
Join Date: Mar 2005
Location: Nailsea
Posts: 360
Local Time: 06:33 PM
Quote: Originally Posted by 1320autos
Yup nitrous related, blocked fuel jet, so always make sure your injectors can cover what you're spraying.
PM sent
May 6th, 2006, 03:01 AM
smcc
Join Date: Oct 2005
Location: Singapore
Posts: 322
Local Time: 03:33 AM
It looks like injectors nozzles are blocked except one , therefore high pressured atomized fuel concentrating at one point . its unlikely material fatigue . Such failure usaully occurs too rich of fuel .
May 6th, 2006, 02:57 PM
MINI2 Master
Join Date: Jul 2005
Location: Beds Cambs Northants
Posts: 1,994
Local Time: 06:33 PM
I forgot to add that we run a 12.4 @108 with the piston like that and No3 piston cracked as well
First M45 Cooper S to run a 12 (12.96@105)
On Nitrous 11.16@123 0-100 7.1991
It's not how much you spend but how well you spend it
May 7th, 2006, 05:31 AM
Best Personal Regards
Join Date: Dec 2004
Location: Ile de Vaux, France
Posts: 2,022
Local Time: 08:33 PM
Typical failure due to pre-ignition detonation. The piston has melted because it got to hot so that means either a massive air leak led to a seriously weak A:F ratio or the builder got his sums wrong and had WAAAAY to much compression for the fuel used. Either way, someone needs to go back to basics on engine building engine prepping.......
May 7th, 2006, 08:29 AM
MINI2 Master
Join Date: Jul 2005
Location: Beds Cambs Northants
Posts: 1,994
Local Time: 06:33 PM
Quote: Originally Posted by pocketrocketowner
Typical failure due to pre-ignition detonation. The piston has melted because it got to hot so that means either a massive air leak led to a seriously weak A:F ratio or the builder got his sums wrong and had WAAAAY to much compression for the fuel used. Either way, someone needs to go back to basics on engine building engine prepping.......
Fuel jet was blocked on the wet nitrous system and the stock injectors couldn't supply enough fuel for 290hp 170 stock 120 nitrous
First M45 Cooper S to run a 12 (12.96@105)
On Nitrous 11.16@123 0-100 7.1991
It's not how much you spend but how well you spend it
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