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Speedex Heads
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23-01-2020, 03:56 PM
Tom, yes the block is ported and the cylinder edge relieved. For me, the important thing apart from the comparison was the fact that the ‘37 head choked at about 0.25 in lift. The restriction was not the valve opening it was the transfer from valve chamber to cylinder. Once this was resolved I have a head with higher compression than a Ricardo, but which flows like a ,37. Can you see a picture? No chance.
Alan Fairless
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| Messages In This Thread |
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Speedex Heads - by Adam Brown - 21-01-2020, 01:49 PM
RE: Speedex Heads - by Alan - 21-01-2020, 02:15 PM
RE: Speedex Heads - by Paul Nott - 21-01-2020, 04:16 PM
RE: Speedex Heads - by Malcolm Parker - 21-01-2020, 04:50 PM
RE: Speedex Heads - by Steve Jones - 21-01-2020, 05:35 PM
RE: Speedex Heads - by Hugh Barnes - 21-01-2020, 05:39 PM
RE: Speedex Heads - by dickie65 - 21-01-2020, 06:21 PM
RE: Speedex Heads - by Alan - 21-01-2020, 06:53 PM
RE: Speedex Heads - by dickie65 - 21-01-2020, 07:06 PM
RE: Speedex Heads - by Dave Wortley - 21-01-2020, 07:07 PM
RE: Speedex Heads - by Alan - 21-01-2020, 07:25 PM
RE: Speedex Heads - by Ian Williams - 21-01-2020, 07:38 PM
RE: Speedex Heads - by Steve kay - 21-01-2020, 07:38 PM
RE: Speedex Heads - by Alan - 21-01-2020, 07:49 PM
RE: Speedex Heads - by Steve Jones - 21-01-2020, 08:40 PM
RE: Speedex Heads - by Ian Williams - 22-01-2020, 02:28 AM
RE: Speedex Heads - by Mike Costigan - 22-01-2020, 09:39 AM
RE: Speedex Heads - by Adam Brown - 22-01-2020, 09:42 AM
RE: Speedex Heads - by Malcolm Parker - 22-01-2020, 09:59 AM
RE: Speedex Heads - by geoffharrison - 22-01-2020, 10:46 AM
RE: Speedex Heads - by Steve kay - 22-01-2020, 10:47 AM
RE: Speedex Heads - by Dave Wortley - 22-01-2020, 02:52 PM
RE: Speedex Heads - by Steve Jones - 22-01-2020, 03:00 PM
RE: Speedex Heads - by Ian McGowan - 22-01-2020, 03:45 PM
RE: Speedex Heads - by Tom Coates - 22-01-2020, 03:49 PM
RE: Speedex Heads - by geoffharrison - 22-01-2020, 04:15 PM
RE: Speedex Heads - by Steve Jones - 22-01-2020, 04:15 PM
RE: Speedex Heads - by Alan - 22-01-2020, 06:38 PM
RE: Speedex Heads - by JonE - 22-01-2020, 07:24 PM
RE: Speedex Heads - by Alan - 22-01-2020, 08:25 PM
RE: Speedex Heads - by Tony Press - 22-01-2020, 11:10 PM
RE: Speedex Heads - by Austin in the Shed - 23-01-2020, 12:21 AM
RE: Speedex Heads - by Tom Coates - 23-01-2020, 03:29 PM
RE: Speedex Heads - by Alan - 23-01-2020, 03:56 PM
RE: Speedex Heads - by dickie65 - 23-01-2020, 10:15 PM
RE: Speedex Heads - by Jack in the Box - 23-01-2020, 10:52 PM
RE: Speedex Heads - by Austin in the Shed - 23-01-2020, 11:15 PM
RE: Speedex Heads - by Alan - 23-01-2020, 11:32 PM
RE: Speedex Heads - by Austin in the Shed - 24-01-2020, 09:22 AM
RE: Speedex Heads - by Jack in the Box - 24-01-2020, 10:32 AM
RE: Speedex Heads - by geoffharrison - 24-01-2020, 11:44 AM
RE: Speedex Heads - by Rogerfrench - 24-01-2020, 04:14 PM
RE: Speedex Heads - by Alan - 24-01-2020, 04:52 PM
RE: Speedex Heads - by Jack in the Box - 24-01-2020, 06:13 PM
RE: Speedex Heads - by Bob Culver - 24-01-2020, 07:51 PM
RE: Speedex Heads - by Dave Wortley - 28-01-2020, 08:59 AM
RE: Speedex Heads - by Chris KC - 28-01-2020, 09:54 AM
RE: Speedex Heads - by Dave Wortley - 28-01-2020, 01:48 PM
RE: Speedex Heads - by IanClayton - 31-01-2020, 01:26 PM
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