jimjames2uk Member Sep 18, 2007 #1 is the 5 bearing engine head ok for unleaded petrol is an 85 engine and wondered if anyone knows if ill have to replace head for an unleaded head or add fuel additives
is the 5 bearing engine head ok for unleaded petrol is an 85 engine and wondered if anyone knows if ill have to replace head for an unleaded head or add fuel additives
S Sean Banned Sep 18, 2007 #2 the addictives would help but unless your going to do lots of miles in it you wont have too much to worry about valve regression
the addictives would help but unless your going to do lots of miles in it you wont have too much to worry about valve regression
C clivees Well-Known Member Sep 19, 2007 #3 Just run it and keep a eye on the valve clearance to see if they close up.
