byrideroffshore

I remember you guys You guys have a Marina.? Father and son team? And you are right valvetrains have certain harmonics at certain rpms best to to not stay at that rpm… been good keep watching the class do great 10-11 in kw pretty cool still have the boat like to run again soon


take care

boostbros

you guys will love this vid how about .750 pushrods? i amazed at how much the valve stem moves we run jesel and big chiefs so i know that they break but never could figure out why!

byrideroffshore

Lol. That’s great. How true. Always wanted to go to a spintron to play with it. Cool stuff

Tartilla

Ego is a close 2nd.

Tartilla

High speed cams on valvetrain is wild. Never thought a spring would twist at the base to spring as the spring was compressed.

...and the moving of the stem. Wow.
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Mr. Murphy is always a co-pilot.

105Fountain

Valve springs

Brad Christy

Brad Christy

Brad Christy

Guys,

The layman in me really want to believe that anything that helps a valve train in a drag engine survive at 10-11K RPM would be beneficial for a marine engine at 7500. Right?

Also... What's the theory on putting the clamp screw through the rocker shaft, rather than one on either side of it, with a saddle clamp? The machine designer/builder in me is cringing over that. A slightly longer shaft, with a near full-compliment saddle clamp would surely be more rigid than a hole through the ends of the shaft....? Been done? Curious...

Thanks. Brad.

boostbros

those high speed videos are wild i never would have thought possible how much the spring is moving around i,m also shocked by how much the valve stem moves around and thats a very hard stiff piece of high quality metal