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Little Louis
Field Plougher
Joined: February 8th, 2009, 12:07 am
Posts: 2357
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 Re: Twin exhausts. Old-Nail wrote:
Ken would it be the same story if a modified (twin outlet) crossbox was used as well?
*GUESS* probably unless you put twin carbs on it
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| May 26th, 2010, 9:56 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Twin exhausts. Old-Nail From what I can figure out, the internal arrangement of a crossbox is designed to ensure that the exhaust gas path from each cylinder to the outlet is, as near as dammit, of equal length. That's one of the basic rules for ensuring best power output from any exhaust system, iirc. If you add another outlet at the other end of the crossbox, much of the benefit from the original design will probably be lost. Unless you open up the expansion box and rework its internal baffles as well?  ken. Old-Nail wrote: :lol:
Ken would it be the same story if a modified (twin outlet) crossbox was used as well?
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| May 26th, 2010, 11:20 pm |
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hjbharry
Firing on two.
Joined: May 1st, 2009, 11:36 pm
Posts: 856
Location: hertfordshire
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Re: Twin exhausts. ken wrote: Old-Nail From what I can figure out, the internal arrangement of a crossbox is designed to ensure that the exhaust gas path from each cylinder to the outlet is, as near as dammit, of equal length.
That's one of the basic rules for ensuring best power output from any exhaust system, iirc.If you add another outlet at the other end of the crossbox, much of the benefit from the original design will probably be lost. Unless you open up the expansion box and rework its internal baffles as well? ken. Mine is equal from cylinder to outlets, so must be good 
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| May 27th, 2010, 9:06 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Twin exhausts. Except you forgot about that old '2 into 1' business. Mind you, the hand jiving rubber gloves trick wouldn't work as well with that.  < http://www.youtube.com/watch?v=Xrdjxj3lMD0 > about 1 minute in... ken hjbharry wrote: Mine is equal from cylinder to outlets, so must be good
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| May 27th, 2010, 10:56 pm |
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Macabry
Firing on two.
Joined: April 18th, 2010, 11:48 pm
Posts: 205
Location: Newent, Glos.
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Re: Twin exhausts. Hand jive......He he he believe it or not my wife teaches it.......
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'87 2CV Special,'78 AMI 8,'52 Anglia, '71 Capri 3000E, '67 Ford Fairlane 500 V8, '69 Ford Torino V8,'99 Xsara,'28 Ford Model A Tudor, '82 G Wagon, '68 LWB SII Landy and some manky renault Meganes.....also Ukranian KMZ MB750, Suzuki TS100,Mobylette.
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| May 27th, 2010, 11:16 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Twin exhausts. How times change...  My mother was born in County Kerry back in the 1920s and I bet there wasn't any of that sort of carry on then. ken ( p.s. Have you seen Harry's dancing rubber glove video? It works fine until he gives it full welly. p.p.s. Thread drift's coming along fine, I reckon. ) Macabry wrote: Hand jive......He he he believe it or not my wife teaches it.......
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Last edited by ken on May 27th, 2010, 11:39 pm, edited 1 time in total.
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| May 27th, 2010, 11:35 pm |
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Jonathan
Firing on two.
Joined: January 1st, 2009, 7:37 pm
Posts: 4708
Location: Disunited Kingdom
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Re: Twin exhausts. ken wrote: ( p.s. have you seen Harry's dancing rubber glove video? It works fine until the gives it full welly. ) A link?
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1988 built (1989 F-registered) Citroën 2CV-Six
2013 (63-Plate) VW Golf SE 1.4TSI BMT DSG7
1932 Morris Minor Open Two-Seater (The £100 car).
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| May 27th, 2010, 11:38 pm |
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ken
Agony Aunt - You have a car problem? Speak to Ken
Joined: March 6th, 2009, 1:40 am
Posts: 3675
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Re: Twin exhausts.
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| May 27th, 2010, 11:40 pm |
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hjbharry
Firing on two.
Joined: May 1st, 2009, 11:36 pm
Posts: 856
Location: hertfordshire
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Re: Twin exhausts. Magic
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| May 27th, 2010, 11:45 pm |
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Jonathan
Firing on two.
Joined: January 1st, 2009, 7:37 pm
Posts: 4708
Location: Disunited Kingdom
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Re: Twin exhausts.
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1988 built (1989 F-registered) Citroën 2CV-Six
2013 (63-Plate) VW Golf SE 1.4TSI BMT DSG7
1932 Morris Minor Open Two-Seater (The £100 car).
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| May 28th, 2010, 12:45 am |
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