Mixing lobe types on a camshaft
Mixing lobe types on a camshaft I can't say this with any certainty but it would seem that valve float begins with the intake valve side of things and then eventually progresses to the exaust but since the exaust is quite a bit less mass it probably never floats. What if a less aggressive lobe were place on the intake like a Comp XE and a Comp LSK were placed on the exaust? Any benefit in increasing the rpm limit without needing extremely high spring rates?
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Joined: Apr 2006
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From: Naperville, IL
Originally Posted by squealingtires
I can't say this with any certainty but it would seem that valve float begins with the intake valve side of things and then eventually progresses to the exaust but since the exaust is quite a bit less mass it probably never floats. What if a less aggressive lobe were place on the intake like a Comp XE and a Comp LSK were placed on the exaust? Any benefit in increasing the rpm limit without needing extremely high spring rates?
I didn't mean to get too specific by naming lobe types I was just trying to use an example of different options. I guess another thing I wonder about is why it isn't very common to find different valve springs taylored to valve mass and lobe type.
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Joined: Apr 2006
Posts: 1,875
Likes: 1
From: Naperville, IL
Originally Posted by squealingtires
I didn't mean to get too specific by naming lobe types I was just trying to use an example of different options. I guess another thing I wonder about is why it isn't very common to find different valve springs taylored to valve mass and lobe type.
I guess the spring came first, they cover a wide variety of applications focusing on fitting various heads instead of getting too specific with setups. Go with TI retainers, sodium filled or TI valves, and match the spring pressure to the cam lobe. Run a good set of lifters.
should be fine.
