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Supercharged 1275
http://www.ausmini.com/forums/viewtopic.php?f=2&t=98217
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Author:  Chris.Williams [ Sun Feb 03, 2019 12:04 pm ]
Post subject:  Re: Supercharged 1275

ausdino wrote:
Chris.Williams wrote:
zulu_warrior1976 wrote:
Mind if I ask where you got the kit? Is it easy to fit?

It’s a zmax kit from the Uk.
Very simple to fit.

Not the Vmaxscart kit ? Looks the same.

Yes sorry Vmax kit, my smartphone isn’t always so smart.

Author:  Morbo28 [ Tue Feb 05, 2019 7:31 pm ]
Post subject:  Re: Supercharged 1275

Nice, looks great, well done :)

What boost are you running?
Doe sit run well?

Sent from my Pixel 2 XL using Tapatalk

Author:  Chris.Williams [ Wed Feb 06, 2019 7:08 am ]
Post subject:  Re: Supercharged 1275

Morbo28 wrote:
Nice, looks great, well done :)

What boost are you running?
Doe sit run well?

Sent from my Pixel 2 XL using Tapatalk

Hi, currently running 10 psi, have ordered a reduction pulley to give it between 5-6 more.
After a bit of fiddling with jets and chokes it seems to be running very well.
I’ll be fitting a water/methanol injection kit to cool the charge and make the extra boost safe.

Author:  michaelb [ Thu Feb 07, 2019 7:00 pm ]
Post subject:  Re: Supercharged 1275

:D Hi Chris, looks great. What chokes do you have in the Weber? My VMAXSCART kit was running very rich on cruise with 30mm chokes as supplied in the kit. I have now fitted 34mm chokes and it is running much better and hovers around 10 to 11 AFR when cruising. About 13:1 AFR on idle and 14:1 AFR under power. With the standard pulley I get 5lb boost at 2000 rpm full throttle with a max of 13lb boost at 6500rpm. The car has been dyno Ed a few times and makes almost 90hp ATW,s which gives a fun drive. I am sure you are enjoying your car on the brilliant NZ roads. :D
Cheers

Author:  Chris.Williams [ Thu Feb 07, 2019 7:13 pm ]
Post subject:  Re: Supercharged 1275

michaelb wrote:
:D Hi Chris, looks great. What chokes do you have in the Weber? My VMAXSCART kit was running very rich on cruise with 30mm chokes as supplied in the kit. I have now fitted 34mm chokes and it is running much better and hovers around 10 to 11 AFR when cruising. About 13:1 AFR on idle and 14:1 AFR under power. With the standard pulley I get 5lb boost at 2000 rpm full throttle with a max of 13lb boost at 6500rpm. The car has been dyno Ed a few times and makes almost 90hp ATW,s which gives a fun drive. I am sure you are enjoying your car on the brilliant NZ roads. :D
Cheers

I also had 30mm chokes, I changed my idle jet to lower my cruse fuel ratio, that’s the circuit they are responsible for. I fitted 28mm chokes to speed up airflow as I had the dreaded Weber cough.
Would bog down when you planted your foot, changed my idle jets for larger ones, which also helped.
I was getting 13lb from about 4000rpm but then changed both my head and full exhaust to more free flowing which has bought my boost down.
I’ll fix this with a 17% reduction pulley.
It’s definitely fun to drive.
Got any pictures of yours?
Here’s the outside of my Clubby
Attachment:
EDCE2FB8-D89E-471B-BA5F-15BAE45C92F1.jpeg

Author:  michaelb [ Thu Feb 07, 2019 7:33 pm ]
Post subject:  Re: Supercharged 1275

Checkout “1275LS conversion project”
I am note sure how to post a link and I need to update with some more recent photos.

Author:  simon k [ Thu Feb 07, 2019 9:11 pm ]
Post subject:  Re: Supercharged 1275

michaelb wrote:
14:1 AFR under power.
Cheers


don't run that for too long, good recipe for melted pistons

Author:  michaelb [ Thu Feb 07, 2019 9:19 pm ]
Post subject:  Re: Supercharged 1275

This was my original setup with SU which went Ok but had a few small issues due to the length of the inlet pipe. Great for cruising but difficult in stop start traffic

Image

Author:  michaelb [ Thu Feb 07, 2019 9:35 pm ]
Post subject:  Re: Supercharged 1275

Quote:
don't run that for too long, good recipe for melted pistons


Been like that for 6 years and still going strong. The AFR does jump around a lot unless idling or cruising

Author:  Chris.Williams [ Fri Feb 08, 2019 3:18 am ]
Post subject:  Re: Supercharged 1275

Idle 13.5-14 :1 afr
Cruise 13.5-14.5:1 afr
Full load 12-12.5 :1 air fuel ratio

This is how mine ended up

Author:  Chris.Williams [ Sun Feb 10, 2019 12:04 pm ]
Post subject:  Re: Supercharged 1275

Took the mini to a local show
https://youtu.be/2yQi8gmgTO0 This is the drive home

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