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Dec 28th, 2019
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Re: Bangs and pops on the over run
[Re: howard]
#689859
20/02/21 12:01 PM
20/02/21 12:01 PM
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Joined: Aug 2013
Posts: 13,866
Salisbury, UK
Peter J
Formerly known as Aldermog
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Formerly known as Aldermog
Member of the Inner Circle
Joined: Aug 2013
Posts: 13,866
Salisbury, UK
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The yellow Mercedes floated my boat!
Peter,
V8s are best....
Tarka the 'Otter Mog....2014 Plus 8
AMG C63 Estate.
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Re: Bangs and pops on the over run
[Re: howard]
#689881
20/02/21 01:32 PM
20/02/21 01:32 PM
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Joined: May 2010
Posts: 7,878
Llanelli
sospan
Talk Morgan Guru
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Talk Morgan Guru
Joined: May 2010
Posts: 7,878
Llanelli
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Years ago a rugby colleague rebuilt the exhaust on his car. Basically replacing rusted pipes with copper pipes. It certainly changed the note of it! They didn’t last that long though. I think Pagani used titanium in one of their cars and included a resonator to tune the note. It was also heat treated to give a purple colour.
Pops and bangs are no substitute for a nice note. Another thing that makes me laugh are the dump valve whooshes that people create. OK for racing to help turbo effectiveness but on a road car? They make me think the car has asthma.
Last edited by sospan; 20/02/21 01:36 PM.
Red Plus8
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Re: Bangs and pops on the over run
[Re: howard]
#689886
20/02/21 01:48 PM
20/02/21 01:48 PM
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Joined: Apr 2016
Posts: 556
Hampton Hill, Middx.
DavidR
Talk Morgan Regular
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Talk Morgan Regular
Joined: Apr 2016
Posts: 556
Hampton Hill, Middx.
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My Aero rumbles nicely on overrun when tickling along slowly in traffic, which I like. But I'm not a fan of pops and bangs though, it always feels like somethings going to go sometime soon.
My first +8 in 1979 had a straight through system, I remember drilling out the two silencer baffles and knocking them out. That made a big improvement in it's sound, with a good bark on the go and rumbles on overrun.
David
Aero S4
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Re: Bangs and pops on the over run
[Re: madmax]
#689902
20/02/21 02:54 PM
20/02/21 02:54 PM
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Joined: Feb 2012
Posts: 55
wigmog
Just Getting Started
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Just Getting Started
Joined: Feb 2012
Posts: 55
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I am a 68 year old child who loves the pops and bangs that all our 3 cars produce! Yes , all my cars pop and bang and none of them are inefficient , sports exhausts are designed to do this , nothing to do with the engine being out of tune . If anyone has been to classiclemans the group c cars sound amazing , pops bangs and flames ! During a visit to the factory not long after I had the manifold/sports exhaust/CS tune done I asked if the pops and bangs could be eliminated. I also asked which "bit" was responsible for said noises. They informed me that it was definitely the CS remap that controlled the pops and bangs and they could be reduced with a (chargeable) tweak. Unfortunately that would result in a slight loss of power. Very helpful they were too.
Last edited by wigmog; 20/02/21 03:34 PM.
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Re: Bangs and pops on the over run
[Re: howard]
#689912
20/02/21 03:14 PM
20/02/21 03:14 PM
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Joined: Mar 2010
Posts: 2,820
Petersfield, Hampshire
Ian Wegg
Talk Morgan Expert
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Talk Morgan Expert
Joined: Mar 2010
Posts: 2,820
Petersfield, Hampshire
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For me, nothing stirs the soul like the wonderful burbling popping noises as I drive over the South Downs on a frosty morning.
You may say that's irrational but (in the words of Tom Stoppard) "- so is a nicely kept garden, or a lover's favour, or a home for stray dogs ... if rationality were the criterion for things being allowed to exist, the world would be one gigantic field of soya beans!"
1980 4/4 4-seater
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Re: Bangs and pops on the over run
[Re: Hawki]
#689944
20/02/21 05:30 PM
20/02/21 05:30 PM
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Joined: Aug 2014
Posts: 5,587
East Anglia
madmax
Charter Member
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Charter Member
Joined: Aug 2014
Posts: 5,587
East Anglia
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Since I put the club sport tune on my plus 4 it pops and bangs much more. The teenager in me lovers it and often dileberately drive it to maximise the effect. It always makes me smile. That is .....very sensible of you Gary , exactly how I like it ! 
Geneva 2016 plus 8' The Green Godess' 4 side exits .
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Re: Bangs and pops on the over run
[Re: sospan]
#690004
20/02/21 10:05 PM
20/02/21 10:05 PM
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Joined: Jan 2009
Posts: 5,144
howard
OP
Charter Member
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OP
Charter Member
Joined: Jan 2009
Posts: 5,144
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Years ago a rugby colleague rebuilt the exhaust on his car. Basically replacing rusted pipes with copper pipes. It certainly changed the note of it! They didn’t last that long though. I think Pagani used titanium in one of their cars and included a resonator to tune the note. It was also heat treated to give a purple colour.
Pops and bangs are no substitute for a nice note. Another thing that makes me laugh are the dump valve whooshes that people create. OK for racing to help turbo effectiveness but on a road car? They make me think the car has asthma. Its an aside but titanium turns a lovely pink on the surface just being heated. I remember us making the landing legs for TSR2 in the big drop stamp - they were titanium and were beautiful even before machined. The cancellation charges paid by the MoD were the only profit we made that year. Various bits of the fezza are titanium including the wheel bolts and con rods.
Last edited by howard; 20/02/21 10:06 PM.
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Re: Bangs and pops on the over run
[Re: howard]
#690007
20/02/21 10:15 PM
20/02/21 10:15 PM
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Joined: Nov 2018
Posts: 3,091
Northants, UK
TBM
Talk Morgan Addict
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Talk Morgan Addict
Joined: Nov 2018
Posts: 3,091
Northants, UK
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[Its an aside but titanium turns a lovely pink on the surface
Various bits of the fezza are titanium That explains a lot. 
1972 4/4 4 seater - 3G Morganeer
Too many ratty motorbikes
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