04-01-2020, 09:55 AM
I've seen a lot posted about sevens 'heavy breathing' and mention of the 4 breather holes in the valve chest cover. This seems to relate to earlier cars, ours has the later cast aluminium cover and no breather holes. Do the later cars have any breather provision, is it necessary, and if it is can I add it without damaging standard parts??
Thanks to anyone who can help....
Thanks to anyone who can help....
Cheers from Chris and Hilary