History of the engine front cover fasteners
Posted: Sun Jan 16, 2011 12:27 pm
I posted this on the /2 list, so thought it might be of interest here too. Someone asked what was period correct for the front engine cover nuts. Here is my answer. I think that it might also be on my website. It should be.
A 1966 would have had the 13 mm heads on the front engine cover.
The first ones (late 55 into 56) were a slot screwdriver type, same as on the /3, but it seems that they only "used them up" on the first Earles models.
Then from 1956 thru mid 64 they were all 14 mm.
Sometime in late 64, or starting with the 65 they went to the 13 mm heads.
Sometime in early series of the 68 models they went to the 10 mm heads.
I don't think that any of the changes in head size occurred with a year change. Rather common for BMW.
The most confusing year was 1964 when various fasteners stopped being 14 mm and became 13 mm. It seemed that early 64 were mostly 14 mm and later were mostly 13 mm.
Remember, as a general rule, if the part would work forwards and backwards, the parts books didn't reflect it with a SN.
A 1966 would have had the 13 mm heads on the front engine cover.
The first ones (late 55 into 56) were a slot screwdriver type, same as on the /3, but it seems that they only "used them up" on the first Earles models.
Then from 1956 thru mid 64 they were all 14 mm.
Sometime in late 64, or starting with the 65 they went to the 13 mm heads.
Sometime in early series of the 68 models they went to the 10 mm heads.
I don't think that any of the changes in head size occurred with a year change. Rather common for BMW.
The most confusing year was 1964 when various fasteners stopped being 14 mm and became 13 mm. It seemed that early 64 were mostly 14 mm and later were mostly 13 mm.
Remember, as a general rule, if the part would work forwards and backwards, the parts books didn't reflect it with a SN.