|
Title: webcam 277 Post by: bedjo78 on September 14, 2011, 00:55:15 am I am in progress building race engine only. 86 x 94
Case CB aluminum. Rods 5.7 inch pauter pro heads 52 X 40 JE piston with total seal Webcam 277 CB light lifter Ratio rocker pro 1,6 : 1 Carb would be jaycee 52 or 58 Accidently I received heads with 1.6 rocker instead 1.5. With 277 and 1.6 rocker valve lift would be arround 0.750" I am worry if the K800 spring could handle the lift. What would be affected to cam and lifters? I am looking your share here. Thanks Title: Re: webcam 277 Post by: Torben Alstrup on September 14, 2011, 01:02:31 am Hello.
0,750" is a rather healthy lift :o - IF - the K800Žs can handle that, which I doubt, There will be no "extra" wear on the cam and lifters apart from what normally is seen on radical engines. But youŽll need superior protection of the rotating parts. Another thing is, - can the heads handle that lift ? T Title: Re: webcam 277 Post by: neil68 on September 14, 2011, 02:23:56 am Is that a typo in the first post?
Web 277 has 0.441" lift which = 0.705" with 1.6 rockers (and 0.661" with 1.5's). Title: Re: webcam 277 Post by: bedjo78 on September 14, 2011, 02:45:23 am Torben,
That's right i was wondering on rotating parts if could handle that lift. the heads is low compression heads and could handle the lift. but the rotating parts load would be my concern. Neil, I haven't personally check the cam lift. Or see the cam chart. The owner got the cam with no chart. And I saw on webcam website states 0.66 lift which i though using 1.4 rocker. Thanks for that info's.. Not decide yet weather i will get another cam with lower camlift or try to get 1.5 ratio rocker which is expensive with pauter heads. Title: Re: webcam 277 Post by: Deadly1 on September 25, 2011, 20:56:56 pm I would use .700 as the upper limit for K800 springs anything beyond that would likely need a better spring to control the valve anyhow. K900 or PSI springs. Wayne
|