standard exhaust performance

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standard exhaust performance

JonE

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Joined: Aug 2017 Posts: 3,329 Threads: 372
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11-10-2018, 09:55 AM

I have always been intrigued by the Birkett statement in the green book suggesting long, narrow bore 7/8" ID tailpipes were best. This old forum 2014 thread is worth re-invigorating:

http://pub25.bravenet.com/forum/static/s...8&cmd=show

Ray White's comments on replacing the large bore rear pipe of his Swallow with an 1" bore (and finding it improved) contrasts with Sandy Croall's observation that when his LWB rear pipe fell off, performance improved (it became akin to the SWB system).

Any more recent experiences from those experimenting with standard manifolds and engines? Were Austin exhausts overspecced in diameter?

https://ulster7.wordpress.com https://sevenrk.wordpress.com/

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Messages In This Thread

standard exhaust performance - by JonE - 11-10-2018, 09:55 AM

RE: standard exhaust performance - by Dave Mann - 11-10-2018, 10:07 AM

RE: standard exhaust performance - by jansens - 11-10-2018, 10:47 AM

RE: standard exhaust performance - by Michael D - 11-10-2018, 04:30 PM

RE: standard exhaust performance - by Ian Williams - 11-10-2018, 11:21 AM

RE: standard exhaust performance - by Steve Bryant - 11-10-2018, 03:13 PM

RE: standard exhaust performance - by Dave Wortley - 11-10-2018, 07:34 PM

RE: standard exhaust performance - by Davemayle - 11-10-2018, 07:45 PM

RE: standard exhaust performance - by Bob Culver - 11-10-2018, 07:44 PM