Notices
General Technical
Sponsored by:
Sponsored by: CARiD

Flaming exhaust...but how.

Old Feb 17, 2005 | 09:42 PM
  #1  
SC008Y_MAD's Avatar
SC008Y_MAD
Thread Starter
Scooby Regular
iTrader: (5)
 
Joined: Jan 2004
Posts: 8,948
Likes: 0
From: Bedfordshire
Default Flaming exhaust...but how.

My dad and i followed a Scooby 'Classic' and it was flaming. My dad said he had never had seen a car do that before and he wanted to know how is was possible. I know about flamer kits.

Cheers

Darren

Sorry is this has been answered before etc...
Reply
Old Feb 17, 2005 | 09:54 PM
  #2  
dazc's Avatar
dazc
Scooby Regular
 
Joined: Dec 2004
Posts: 663
Likes: 0
From: N Yorks
Default

It is probably anti lag as rally cars use.
When you put your foot down in a turbo charged car, you get a moment where there is a delayed response time for the turbo to spin up to provide power. This is called turbo lag.
Anti lag basically retards the cars timing, so when you come off the throttle fuel is ignited within the turbo/exhaust which keeps the turbo spinning fast (ie no lag=instant response) hence the occasional flames.
Usually accompanied with a loud bang!
Reply
Old Feb 17, 2005 | 09:57 PM
  #3  
SC008Y_MAD's Avatar
SC008Y_MAD
Thread Starter
Scooby Regular
iTrader: (5)
 
Joined: Jan 2004
Posts: 8,948
Likes: 0
From: Bedfordshire
Default

This did not have a loug bang. a few pops at the most. but No bangs.

But what about a Scooby without antilag??
Reply
Old Feb 17, 2005 | 10:01 PM
  #4  
dazc's Avatar
dazc
Scooby Regular
 
Joined: Dec 2004
Posts: 663
Likes: 0
From: N Yorks
Default

Mine doesn't really pop & bang, or light up the countryside behind me orange unless I have the anti lag switched on. Daz
Reply
Old Feb 17, 2005 | 10:14 PM
  #5  
SC008Y_MAD's Avatar
SC008Y_MAD
Thread Starter
Scooby Regular
iTrader: (5)
 
Joined: Jan 2004
Posts: 8,948
Likes: 0
From: Bedfordshire
Default

Cheers for that info mate.


Darren
Reply
Old Feb 17, 2005 | 11:13 PM
  #6  
Power Junkie's Avatar
Power Junkie
Scooby Regular
20 Year Member
iTrader: (1)
 
Joined: Mar 2003
Posts: 5,585
Likes: 6
From: Aberdeen
Default

you can get it with well wrapped headers,downpipe and full de-cat running a little rich. you do get the odd flame.
Reply
Old Feb 17, 2005 | 11:31 PM
  #7  
Dark Blue Mark's Avatar
Dark Blue Mark
Scooby Regular
 
Joined: Apr 2002
Posts: 7,333
Likes: 0
From: Bournemouth - 5x Ex Impreza owner. 997 GT3 CS.
Default

Flames generally mean the car isn't running right, or you're a loser and fitted a spark plug in the tailpipe

MB
Reply
Old Feb 18, 2005 | 12:12 AM
  #8  
ALi-B's Avatar
ALi-B
Moderator
20 Year Member
Liked
iTrader: (1)
 
Joined: Apr 2002
Posts: 38,078
Likes: 310
From: The hell where youth and laughter go
Default

A bloke by me has a very well sorted Lotus Sunbeam. He took it for a few test runs up and down the road the other night

The thing sounds beutitful - webbers on full chat, spins up like a motorbike engine, revs like a Vtec...makes me pop my head out the winodw every time I hear it. I fear that this car could eat my scoob alive

You should see the flames it puts out on the gearshifts

Flames are caused by fuel in the exhaust igniting. This can be caused by a missfire....where not all the fuel is burnt in the combustion chamber, and is pushed into the hot exhaust. This can be both lean and rich fuelling as both will cause unburnt fuel to be present, although it is much worse when rich. Missfires- and associtaed backfiring (flames) are caused by lots of things, from incorrect fuelling (rich or lean) wild race cams with large inlet/exhaust valve overlap (such as the lotus above) or wrong cam timing, burnt exhaust valves, bad ignition components or timing- or in the case of Rover v8s a very slack timing chain! Did I cover everything?
Reply
Old Feb 18, 2005 | 09:44 AM
  #9  
SC008Y_MAD's Avatar
SC008Y_MAD
Thread Starter
Scooby Regular
iTrader: (5)
 
Joined: Jan 2004
Posts: 8,948
Likes: 0
From: Bedfordshire
Default

I think you covered everything.
cheers guts for your replys. now i know.
Darren

Originally Posted by ALi-B
A bloke by me has a very well sorted Lotus Sunbeam. He took it for a few test runs up and down the road the other night

The thing sounds beutitful - webbers on full chat, spins up like a motorbike engine, revs like a Vtec...makes me pop my head out the winodw every time I hear it. I fear that this car could eat my scoob alive

You should see the flames it puts out on the gearshifts

Flames are caused by fuel in the exhaust igniting. This can be caused by a missfire....where not all the fuel is burnt in the combustion chamber, and is pushed into the hot exhaust. This can be both lean and rich fuelling as both will cause unburnt fuel to be present, although it is much worse when rich. Missfires- and associtaed backfiring (flames) are caused by lots of things, from incorrect fuelling (rich or lean) wild race cams with large inlet/exhaust valve overlap (such as the lotus above) or wrong cam timing, burnt exhaust valves, bad ignition components or timing- or in the case of Rover v8s a very slack timing chain! Did I cover everything?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Phil3822
ICE
2
Sep 24, 2015 11:14 PM
Adonis
Member's Gallery
2
Jul 4, 2001 10:05 PM
RICH WILD
Member's Gallery
58
Jul 2, 2001 06:56 PM
Leigh
ScoobyNet General
16
Feb 4, 2001 01:13 PM
RB5SCOTT
ScoobyNet General
8
Jan 19, 2001 08:47 AM


Thread Tools
Search this Thread

All times are GMT +1. The time now is 05:40 AM.