I asked this question in another thread and got no response, so I thought why not start a new one? I have a 20HP Intek that seems to be floating the valves at high RPM's since I installed a new billet flywheel.
How exactly do you do double springs? I have heard that you can use springs from an 8HP Briggs and put them inside the stock Inteck springs. Do you use intake with intake and exhaust with exhaust, or some other combination? Will the stock retainers work for this or do I need to get some other retainers? And what are the specs for gapping the valves on a 20 Hp Intek? Any help will be appreciated.
Thanks,
Dennis Drake
IMOW,S/P,B/P #168