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Topic Review (Newest First)
03-03-2005 04:23 PM
Rick WI If you are going solid roller then there is a type of break in you want to abide by. Solids need to be lashed hot. So the base setting you lash at cold will need to be slightly tighter on an iron/iron combination and way tighter on an aluminium/aluminium combination. So if the lash is around .020/.024 on a iron head iron block combo I'd set around .016/.020. If it was an aluminum head and aluminium block I'd be in the .010/.012 range. Lots of growth occurs from cold to hot. After the motor gets hot and up to operating temp on the water AND oil, then the lash has to be run and set to proper specs.

Cold starting points should be verified with the camshaft manufacturer, but will always be less than the hot spec. If your too loose on the initial lash you can bang up the lifters and ramp of the camshaft.
03-03-2005 04:09 PM
86 Stang GT If all he's doing is a cam swap, he can go straight to the drag strip. Roller cams and lifters require no break in, that's the beauty. If there are new rings to seat, then a normal break in period is warranted.
03-03-2005 03:47 PM
Ghetto Jet
Quote:
Originally Posted by 86 Stang GT
yes. lube it and run it.
That is correct. But try to drive it normal for a while.
03-03-2005 02:53 PM
86 Stang GT yes. lube it and run it.
03-03-2005 02:52 PM
65Guera
Roller Cam break in

Hi All,
Thinking of installing a roller cam and lifters. The question I have is I have heard that if a roller cam and lifters is installed no breakin is required. Is this true?

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