RV8 Solid Lifter Valve Clearances.
Discussion
After banging in a thousand or so miles with the solids/adjustable rods I think it prudent to check all is o.k after this settling-in period. Before I do I was wondering what clearance you guys with similar are using.
After speaking to those considered knowlegeable in the field it seemed that somewhere in the region of 12 - 14 thou' is the norm and so I used that at install. However, contrary to what I believed, I've been told that as the motor warms, the clearances grow. Is this correct? If so why the rather large clearance on a cold motor? Surely this will lead to a loss of cam duration and lift let alone the opening ramp slapping the lifter? Could the rods drop out of the cups?
Please fill me in oh knowledgeable ones coz I dunno . . . .
After speaking to those considered knowlegeable in the field it seemed that somewhere in the region of 12 - 14 thou' is the norm and so I used that at install. However, contrary to what I believed, I've been told that as the motor warms, the clearances grow. Is this correct? If so why the rather large clearance on a cold motor? Surely this will lead to a loss of cam duration and lift let alone the opening ramp slapping the lifter? Could the rods drop out of the cups?
Please fill me in oh knowledgeable ones coz I dunno . . . .
2Munkys said:
After banging in a thousand or so miles with the solids/adjustable rods I think it prudent to check all is o.k after this settling-in period. Before I do I was wondering what clearance you guys with similar are using.
After speaking to those considered knowlegeable in the field it seemed that somewhere in the region of 12 - 14 thou' is the norm and so I used that at install. However, contrary to what I believed, I've been told that as the motor warms, the clearances grow. Is this correct? If so why the rather large clearance on a cold motor? Surely this will lead to a loss of cam duration and lift let alone the opening ramp slapping the lifter? Could the rods drop out of the cups?
Please fill me in oh knowledgeable ones coz I dunno . . . .
Run both inlet and exhaust at .008 thou when cold, make sure you adjust on base circleAfter speaking to those considered knowlegeable in the field it seemed that somewhere in the region of 12 - 14 thou' is the norm and so I used that at install. However, contrary to what I believed, I've been told that as the motor warms, the clearances grow. Is this correct? If so why the rather large clearance on a cold motor? Surely this will lead to a loss of cam duration and lift let alone the opening ramp slapping the lifter? Could the rods drop out of the cups?
Please fill me in oh knowledgeable ones coz I dunno . . . .
Dom
. Seems a more reasonable figure to my mind. Should quieten down the rustle too.2Munkys said:
gizzer said:
decrease 
My initial thoughts Paul but I've been told otherwise; what's more, told by someone who's business is all things RV8iness. 
Heat and expansion!!!! Try this sitehttp://www.v8engines.com/engine-4.htm
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