10-10-2018, 11:43 PM
(This post was last modified: 10-10-2018, 11:47 PM by Tony Press.)
(10-10-2018, 08:53 PM)JonE Wrote: I found another one today, Ian! Thanks to looking through Chris Gould's store now have evidence of 1A 38 with taps, 1A 38 without, then 1A 684 dated 1931-ish, and a 1935 dated 1A 7-something.
I was going to try filling them with fluid and seeing the relative differences, if the heads are of similar height and haven't been skimmed... but if you have already done it, yes, there is no hurry.
It does at least suggest that there is a more acceptible route for slightly enhanced tuning on an early car, just by selecting a later standard LC head?
The cards and parts books show-
Casting number 1A 670 was introduced under Part Number BC 82 in August 1933 with a slightly raised compression.
Casting number 1A 684 still under Part Number BC 82 appeared sometime before 1936.
So far I can't see a 1A 7** head number on the cards or parts books.