Cooling System Mods

[Phoenix7]

so the info about the cooling is cited from:

"Toyo Kogyo's Research and Development on Major Rotary Engine Problems" SAE transactions. Paper #700079 for SAE meeting of January 1970.

[-xlr8planet-]

Im doing the water jacket mod. Will post pics tomorrow.

Im doing a crappy job BTW. Doing it by hand its quite hard....

it does the job anyways, even if it does not look pretty

[-xlr8planet-]

[Chadwick]

Another place to look is the flashing left over on the irons from the mold. I go through and clean all of the excess metal off to smooth out the flow.

Dan

[vex]

Originally Posted by Chadwick

Another place to look is the flashing left over on the irons from the mold. I go through and clean all of the excess metal off to smooth out the flow.

Dan

You actually release more thermal energy with turbulant flow (not saying removing the flashing is a bad thing, just that it would be better to cause turbulence in the coolant stream so that lower energy coolant comes in contact with more surface area).... did I make any sense at all?

[Barry Bordes]

Originally Posted by vex

You actually release more thermal energy with turbulant flow (not saying removing the flashing is a bad thing, just that it would be better to cause turbulence in the coolant stream so that lower energy coolant comes in contact with more surface area).... did I make any sense at all?

Yes it does. I would like to use computer heat-sink type devices on the flat surfaces next to the plugs.
Barry

[vex]

Originally Posted by Barry Bordes

Yes it does. I would like to use computer heat-sink type devices on the flat surfaces next to the plugs.
Barry

Fin type (copper)?

[-xlr8planet-]

Just for the record:

to do this properly you gotta have great pulse ... or a CNC machine up your ass

[Barry Bordes]

On my next set of housings I am going to try a wood router and carbide bit. Routers have great height adjustments.

Barry

[Barry Bordes]

I am thinking that we need to increase the temperature in the carbon stained areas and drop the temp at the plug so I am going to try this.

The slotted spoke will concentrate the cooling conduction effect to the plug boss but not to the housing.

Maybe added grooving perpendicular to water flow would also help.

Barry

[Phoenix7]

damn, i see what you did. So, how safe is it to remove so much of that metal? What boost do you normally see?

[Barry Bordes]

Normally 14 but up to 20 psi. I checked out a 16X and a rx8 housing for the latest cooling mods. They are similar. But they remove most of the fin that could be used to cool the plug bore.

Barry

[Herblenny]

Very Interesting Barry! I would love to see the results of this mod. Maybe we could get one of the CNC guys to program this in and mass cut the housing... I also like the idea of parallel groves vs. the perpendicular grooves I've seen before.

[Barry Bordes]

Originally Posted by Herblenny

Very Interesting Barry! I would love to see the results of this mod. Maybe we could get one of the CNC guys to program this in and mass cut the housing... I also like the idea of parallel groves vs. the perpendicular grooves I've seen before.

This will be my next test. Presently I am running the enlarged passages around the sparkplugs with the Mazmart pump.
Barry

[Cp1]

Originally Posted by Herblenny

Very Interesting Barry! I would love to see the results of this mod. Maybe we could get one of the CNC guys to program this in and mass cut the housing... I also like the idea of parallel groves vs. the perpendicular grooves I've seen before.

Haha i would love to do this! i have already written a few programs for milling out rotors and some other things but if anyone wants to donate a set of useable housings i would be willing to program and machine them.

I dont like the parallel grooves. by observation, coolant flow is horizontal and those grooves seem like a great place to trap air. which would be counter productive to cooling. i would much rather see the parallel grooving.