Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - How can you make sure a cam is a 248 one?

tt99ol · 04-06-2008, 05:42 PM

you can degree a cam pretty easily actually
get a couple v blocks to hold up the cam
get a degree wheel to bolt to the front of the cam with a piece of wire as a place marker
get a dial indicator
usually a cam is measured form .050" to .050" lift
place dial indicator on base circle of cam and zero out
turn cam until .050" on dial and write the degree from the wheel
turn the cam until you get back down to .050" and write degrees from degree wheel
subtract the smaller degree from the larger one then you have your duration
usually its .050" but nissan might be different or the 248 might be total lift i'm not sure on that part maybe someone else can chime in on that part

04-06-2008, 05:42 PM	#2
tt99ol Zilvia Addict Join Date: Jan 2005 Location: quartz hill CA Age: 38 Posts: 644 Trader Rating: (8)	you can degree a cam pretty easily actually get a couple v blocks to hold up the cam get a degree wheel to bolt to the front of the cam with a piece of wire as a place marker get a dial indicator usually a cam is measured form .050" to .050" lift place dial indicator on base circle of cam and zero out turn cam until .050" on dial and write the degree from the wheel turn the cam until you get back down to .050" and write degrees from degree wheel subtract the smaller degree from the larger one then you have your duration usually its .050" but nissan might be different or the 248 might be total lift i'm not sure on that part maybe someone else can chime in on that part __________________ Need automotive work done in the antelope valley? Ask me how i can help.