Would there be any benefit of doing the ported water jacket grooves in the direction the water is flowing instead of across its flow? Does the sharp edges cause cavitation where it spills into that trough, trapped air bubbles,, or would it be worth it to round the edges to prevent that and get rid of stress risers in the metal?
Well, the waterflow would be less restricted, due to swirls, but maybe the overall area of heat transfer would be slightly reduced. It's a relaly good question tho.
The ribs increase the surface area and turbulence. The main benefit comes from the added turbulence as that increases the "residence time" of the coolant allowing for more heat to be transfered and pulled from the housing vs more laminar flow. Some builders also add a direct fresh coolant feed from the pump right upstream of the plugs to inject colder coolant to the hottest part of the housing in order to get better heat distribution all around, reducing the risk of distortion and apex seal chatter. Of course as Kyle mentionned, you're pulling more heat from the engine into the coolant, so an increase in coolant temps is possible and an upgraded radiator would be really welcome.
Probably a “if it ain’t broke dont fix it” scenarios, the housings aren’t cracking or anything, and there’s probably not a ton of benefit compared to the increase cost for this motor. While that would benefit, it probably is just an extra expense for not a ton of benefit at the power lever that motor is running.
Would there be any benefit of doing the ported water jacket grooves in the direction the water is flowing instead of across its flow? Does the sharp edges cause cavitation where it spills into that trough, trapped air bubbles,, or would it be worth it to round the edges to prevent that and get rid of stress risers in the metal?
Well, the waterflow would be less restricted, due to swirls, but maybe the overall area of heat transfer would be slightly reduced. It's a relaly good question tho.
@@devultra1125 abrupt swirls or turbulence generally does not increase flow, it reduces it.
The ribs increase the surface area and turbulence. The main benefit comes from the added turbulence as that increases the "residence time" of the coolant allowing for more heat to be transfered and pulled from the housing vs more laminar flow. Some builders also add a direct fresh coolant feed from the pump right upstream of the plugs to inject colder coolant to the hottest part of the housing in order to get better heat distribution all around, reducing the risk of distortion and apex seal chatter. Of course as Kyle mentionned, you're pulling more heat from the engine into the coolant, so an increase in coolant temps is possible and an upgraded radiator would be really welcome.
This was fascinating! what are the man hours to complete this?!
Why not just go billet plates and everything? Billet aluminum is more heat resistant right?
Probably a “if it ain’t broke dont fix it” scenarios, the housings aren’t cracking or anything, and there’s probably not a ton of benefit compared to the increase cost for this motor. While that would benefit, it probably is just an extra expense for not a ton of benefit at the power lever that motor is running.