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GTA · 03-28-2003, 08:17 AM

20mmx20mm? okay, sounds reasonable, that should be about 20-25 pins and about 5-9 holes at a guess.

Then I remove all other pins? Again, sounds reasonable, if all the heat can be removed in this small area and will not really spread out any further, the extra pins will just restrict flow.

I was probably going to use a 2mm or 3mm drill bit to make the holes in the base ( I agree to within 1mm of the bottom of the BP sounds perfect ), but then using maybe 1mm or 1.5mm holes for the jets.

[EDIT] looking at Cathars new design above, I see that he's going for jets smaller than the holes. Any scientific reason for this? My knowledge of fluid physics is poor at best, I just thought that with the jets smaller than the holes, hopefully the water would go in to the lowest point ( obviously the drill I will be using will create a cone shape ) and then flow back up the holes round the outside of the jet of water. Is this thinking accurate?[/EDIT]

I figure that most of the performance for this block will be created by a efficient implementation of the jets and the holes.

Why do you say 1.5-2mm Volenti? I would have thought that smaller would be better, up to a point obviously.

03-28-2003, 08:17 AM	#15
GTA Cooling Savant Join Date: Mar 2003 Location: UK - Bristol Posts: 134	20mmx20mm? okay, sounds reasonable, that should be about 20-25 pins and about 5-9 holes at a guess. Then I remove all other pins? Again, sounds reasonable, if all the heat can be removed in this small area and will not really spread out any further, the extra pins will just restrict flow. I was probably going to use a 2mm or 3mm drill bit to make the holes in the base ( I agree to within 1mm of the bottom of the BP sounds perfect ), but then using maybe 1mm or 1.5mm holes for the jets. [EDIT] looking at Cathars new design above, I see that he's going for jets smaller than the holes. Any scientific reason for this? My knowledge of fluid physics is poor at best, I just thought that with the jets smaller than the holes, hopefully the water would go in to the lowest point ( obviously the drill I will be using will create a cone shape ) and then flow back up the holes round the outside of the jet of water. Is this thinking accurate?[/EDIT] I figure that most of the performance for this block will be created by a efficient implementation of the jets and the holes. Why do you say 1.5-2mm Volenti? I would have thought that smaller would be better, up to a point obviously.