Notices
Drivetrain Gearbox, Diffs & Driveshafts etc

Tuning a supercharged engine?

Thread Tools
 
Search this Thread
 
Old Dec 27, 2003 | 04:56 PM
  #1  
Deep Singh's Avatar
Deep Singh
Thread Starter
Scooby Regular
 
Joined: Jan 2001
Posts: 5,582
Likes: 0
Question

Can someone explain whether tuning a SC engine will be as 'straight forward' as a turbo charged one, ie exhaust,ECU remap and about 20-30 extra ponies?
Reply
Old Dec 28, 2003 | 10:31 AM
  #2  
Deep Singh's Avatar
Deep Singh
Thread Starter
Scooby Regular
 
Joined: Jan 2001
Posts: 5,582
Likes: 0
Smile

Anybody there?
Reply
Old Dec 28, 2003 | 11:58 AM
  #3  
Katana's Avatar
Katana
Scooby Regular
 
Joined: Jan 2002
Posts: 5,153
Likes: 0
From: In a house
Post

Same theory as a turbocharged car except that you get boost early on I guess. Oh and its not run from exhaust gasses but from a belt. In other words, I never had it before.
Reply
Old Dec 28, 2003 | 12:22 PM
  #4  
David_Wallis's Avatar
David_Wallis
Scooby Regular
 
Joined: Nov 2001
Posts: 15,239
Likes: 1
From: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
Post

pretty much..

you can change the size of the pulleys...

I would expect better gains lower down in the rev range as superchargers seem better at low revs.. and gutless at the top end.. unlike turbos..

David
Reply
Old Dec 28, 2003 | 02:37 PM
  #5  
Deep Singh's Avatar
Deep Singh
Thread Starter
Scooby Regular
 
Joined: Jan 2001
Posts: 5,582
Likes: 0
Post

Thanks. I was told that the ECU does not control the SC it is purely mechanical via the pulleys you mention. Can you explain how the size of the pulleys adjusts boost? They maybe gutless at higher revs but thats not such a problem given a decent sized engine in the first place?
Reply
Old Dec 28, 2003 | 03:49 PM
  #6  
StickyMicky's Avatar
StickyMicky
Scooby Regular
 
Joined: Feb 2003
Posts: 21,611
Likes: 0
From: Zed Ess Won Hay Tee
Post

think of a mountain bike

change the size of the sprocket on the back wheel and u can make the wheel spin faster or slower

this applies to the super charger pulley wheel
fit a smaller one and it will spin faster = more boost
Reply
Old Dec 28, 2003 | 07:17 PM
  #7  
Deep Singh's Avatar
Deep Singh
Thread Starter
Scooby Regular
 
Joined: Jan 2001
Posts: 5,582
Likes: 0
Post

Thanks Sticky. With most mods there is a downside, ie bigger turbo,lose a little at the bottom. What would be the theoretical downside of having a smaller pulley?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
KAS35RSTI
Subaru
27
Nov 4, 2021 07:12 PM
Sam Witwicky
Engine Management and ECU Remapping
17
Nov 13, 2015 10:49 AM
Brzoza
Engine Management and ECU Remapping
1
Oct 2, 2015 05:26 PM
Ganz1983
Subaru
5
Oct 2, 2015 09:22 AM
Jamesh10
General Technical
3
Oct 1, 2015 11:56 PM




All times are GMT +1. The time now is 07:06 AM.