AstinaGT Forums - View Single Post - GB: [QLD] NGK Iridium spark plugs

twilightprotege · 06-12-2004, 03:10 PM

the sp20 has 11mm clearance from the bottom of the plug to the top of the piston. it is certainly safe to go with ZF's.

i would say most engines would be around that sort of clearance with the BK plugs (which are 76mm long).

06-12-2004, 03:10 PM	#67
twilightprotege Driving a faster car now! Join Date: Oct 2003 Location: Work, always at bloody work... Car: Lotus ....... . Posts: 5,217	the sp20 has 11mm clearance from the bottom of the plug to the top of the piston. it is certainly safe to go with ZF's. i would say most engines would be around that sort of clearance with the BK plugs (which are 76mm long).