ausmini
https://www.ausmini.com/forums/

turbocharge or supercharge. thoughts
https://www.ausmini.com/forums/viewtopic.php?f=2&t=89411		 Page 1 of 3
Author:  boomini [ Sun May 10, 2015 10:35 pm ]
Post subject:  turbocharge or supercharge. thoughts
Hey guys just having a think...

I got an eaton m45 supercharger kit here but considering that 4 people I have spoken too have all had dramas with fuel freezing in the long induction pipe.

Im not ready atm to go fuel injection like babes has nor do I have the money.

I have been looking at turbo minis and just something about the simplicity is drawing me towards one.

Besides heat and lag can anyone give me a reason not too turbo?

Cheers rodney

Ps if I decide to turbo then the supercharger kit will be getting sold.
Author:  Morbo28 [ Mon May 11, 2015 10:21 am ]
Post subject:  Re: turbocharge or supercharge. thoughts
These are the thoughts I had when trying to decide the same thing, so is based on my research and knowledge from other cars, rather than any direct experience constructing all variations of forced induction Minis.
Sounds like turbo might be the way to go for you. If the only supercharger option in the running here is the m45 suck through carby setup then you will probably always have some sort of fuelling issue.

For the supercharger:
  • You could look at inlet heating? probably too fiddly to get right and not sure how successful it would be. I know some applications have heated various parts of the inlet. I have also heard that fuel condensation in the charger itself can also be a problem?
  • You could look at EFI but that's off the table due to cost which means that
  • The option of a different supercharger unit/kit is also likely off the table
  • You could look at using a blow-through setup and a plenum chamber (perhaps the Turbo Metro setup?) but I'm not sure that would be straight forward. I'm not sure how familiar with it you are, but you would have to alter the way the carby works, like they did in the Turbo Metro, to compensate for the positive air pressure in the intake manifold instead of the usual negative.

For the turbo, many setups have worked quite well, though if cost is a factor ruling out EFI would that also rule out buying the things needed for a turbo setup? There is a turbo inlet and exhaust manifold set for sale in these forum classifieds.

I decided I wanted the characteristics of the supercharger - broad spread of power and torque.But that's a different charger and setup to what you're looking at.
Author:  Babes [ Mon May 11, 2015 11:01 am ]
Post subject:  Re: turbocharge or supercharge. thoughts
Metro turbo set up could possible be the way forward, got to be one of the cheaper options I think.
Author:  drmini in aust [ Mon May 11, 2015 12:24 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
I would check out the turbo fitting kit sold by Benjamin on here.
Unlike the Metro turbo kit, there is no firewall cutting needed.
Check in the for sale forum.
viewtopic.php?f=8&t=89309
Author:  Hanra [ Mon May 11, 2015 12:35 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
What sort of induction does the above kit use?
Author:  drmini in aust [ Mon May 11, 2015 4:34 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
SU, either an HS6 or HIF44.
Author:  boomini [ Mon May 11, 2015 7:18 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
Matts kit cetainly looks the part.

Will have too get in touch with him.
Author:  Hanra [ Mon May 11, 2015 7:32 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
Suck through I assume?
Author:  drmini in aust [ Mon May 11, 2015 7:38 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
Yes it is.
Benjamin's 1152 turbo Mini was a weapon, it made ~125HP ATW years ago.
Author:  michaelb [ Mon May 11, 2015 8:54 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
The M45 kit can be made to work about 90% OK with a carby, but I think fuel injection would solve the remaining 10%

Although it does have a smooth power delivery I think the turbo route would give a greater power output if required?
And yes by heating the inlet tube you can solve most of the stop start fuelling issue but not totally.

Image
Author:  simon k [ Mon May 11, 2015 9:11 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
if I had my time again I might do a turbo instead of the blower, maybe the grass is greener on the other side, but being able to intercool it and have a reasonable shaped intake manifold would be heaven
Author:  michaelb [ Mon May 11, 2015 9:27 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
FYI, here is my version of heating the inlet pipe

Image
Author:  low n blown [ Tue May 12, 2015 4:34 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
The cooling of the inlet pipe is from the rapid evaporation of the air/fuel mix that lines the walls of the intake, not the actual charge. Try shortening your inlet pipe. I never had any such problems with the black car and the carb inlet was basically 15mm long. I am building up the minisprint to run a TVS900 blower, as it is a much more efficient bit of kit than the Eaton and generates less heat. Heat is the enemy of power and reliability so rather than patching the problem by heating the manifold look for a solution to the underlying cause.
G
Author:  michaelb [ Tue May 12, 2015 4:43 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
When you start to look at the basic design of these Eaton
M45 kits the. You see how basic the whole idea is..
There is also a design flaw with the inlet manifold into the head where the pipe out of the charger is very small
So I agree with changing the whole design but unfortunately I'm stuck with this until I have more time and money
Still! It's fun to drive:)
Author:  boomini [ Tue May 12, 2015 4:46 pm ]
Post subject:  Re: turbocharge or supercharge. thoughts
My thoughts were to change carb and intake pipe too shorten it up. But cause the intake for the charger is so high it has too drop to run any carb.
Page 1 of 3 All times are UTC + 10 hours
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/