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Head Identification

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Head Identification
Bob Culver Offline
dogged member, NZ
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Joined: Aug 2017 Posts: 2,748 Threads: 31
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Location: Auckland, NZ
#18
30-09-2018, 07:37 PM
Heads were a nominal 1.5 inches deep. The depth to the plateau from surface seems to be about .2" for pre 1933 and .14" for the later. Capacity of the latter about 37cc. You can work out the capacities backwards from the recent article! The curious thing is that contemporay road test of the RN with lc head and restrictive carb got better performance than the RP! Unless the test example was specially prepped.
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Messages In This Thread
Head Identification - by bob46320 - 14-09-2018, 08:14 PM
RE: Head Identification - by Tony Press - 14-09-2018, 11:26 PM
RE: Head Identification - by bob46320 - 15-09-2018, 06:19 AM
RE: Head Identification - by Tony Press - 15-09-2018, 07:38 AM
RE: Head Identification - by Ian McGowan - 15-09-2018, 08:16 PM
RE: Head Identification - by Tony Press - 16-09-2018, 01:51 AM
RE: Head Identification - by Bob Culver - 15-09-2018, 08:02 AM
RE: Head Identification - by Mike Costigan - 15-09-2018, 08:20 AM
RE: Head Identification - by Ruairidh Dunford - 15-09-2018, 09:26 AM
RE: Head Identification - by Ruairidh Dunford - 15-09-2018, 08:54 PM
RE: Head Identification - by AustinWood - 15-09-2018, 10:04 PM
RE: Head Identification - by bob46320 - 16-09-2018, 12:06 PM
RE: Head Identification - by AustinWood - 16-09-2018, 12:42 PM
RE: Head Identification - by Viteran - 16-09-2018, 02:51 PM
RE: Head Identification - by Steve Bryant - 16-09-2018, 09:29 PM
RE: Head Identification - by Ruairidh Dunford - 16-09-2018, 09:32 PM
RE: Head Identification - by Steve Bryant - 30-09-2018, 06:25 PM
RE: Head Identification - by Tony Press - 01-10-2018, 12:39 AM
RE: Head Identification - by Bob Culver - 30-09-2018, 07:37 PM
RE: Head Identification - by Ian Williams - 30-09-2018, 08:47 PM
RE: Head Identification - by Steve Bryant - 01-10-2018, 12:51 AM

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