SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: goin_up_river771 on December 15, 2016, 06:20:43 PM
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What do u prefer and why?
Sent from the Waterwheel crew
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What do u prefer and why?
Sent from the Waterwheel crew
. All depends on what you want to do with your boat.
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Just depends on what you plan on doing? How agro on the cam? What sort of rpm range? And how much you want to work on it? Then throw in flat vs roller and you have 4 possible directions to go.
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http://www.hotrod.com/articles/mopp-0312-solid-vs-hydraulic-lifters/ (http://www.hotrod.com/articles/mopp-0312-solid-vs-hydraulic-lifters/)
When I built my motor I decided not to go solid due to the maintenance involved. Solid is worth a few more ponies.
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It's a 620/620 112 LSA roller cam in a blown 461 running 6-7 pounds of boost
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Don't mind working on it too much
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It's a 620/620 112 LSA roller cam in a blown 461 running 6-7 pounds of boost
Sent from the Waterwheel crew
What is the duration and what RPM do you estimate?
And if you have the cam, it determines hydro or mechanical.
JMO
GT
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I have cam already and it's a hydraulic roller, I'm using hydraulic lifters but. Keep hearing people say " oh man you should use solid lifters, I couldnt really see rpm being much higher than 6 grand
Sent from the Waterwheel crew
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I have cam already and it's a hydraulic roller, I'm using hydraulic lifters but. Keep hearing people say " oh man you should use solid lifters, I couldnt really see rpm being much higher than 6 grand
Sent from the Waterwheel crew
If it's a hydraulic grind... leave the hydraulic lifters. You CAN put solids on a hydrauilc grind (depending on what core was used... do not with the cast SADI cores though) but you're gonna have to run with a fairly tight lash for two reasons: 1... they do not have as much of a ramp to take up clearance as a soild does (lash ramp)... and 2... you're gonna lose both seat and @.050 duration... not to mention peak lift. A lot of your tight lash solids are just hydraulic grinds... but they factor in the loss when they grind the cam beforehand. Also... typically hydraulic grinds are not quite as aggressive as they cannot exceed the lifter speed the internal hydraulic plunger can control... "lifter pump".
If you got a hydraulic... just keep the lifters on it. If you really want a solid... get a solid ground to suit your application. But to be honest... apples to apples... the right grind hydraulic and the right grind solid... unless you plan on running something pretty big... turning some decent rpm... and it's pretty hotrodish... the difference is often unnoticeable behind the wheel. Guy with 500hp river cruiser that may see 5600 rom... will never notice the difference. Just my opinion.
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All make sense to me, I figured for this build just being a hopefully reliable river racer that I'll just leave it be... first things first drop the new set up in and enjoy it ..
Here's a few pics
Sent from the Waterwheel crew
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All make sense to me, I figured for this build just being a hopefully reliable river racer that I'll just leave it be... first things first drop the new set up in and enjoy it ..
Here's a few pics
Sent from the Waterwheel crew
I was going to say, aren't you supercharged? For some reason I thought centrifugal though.