ported water jackets?
 

Has anyone had their water jackets grooved? If so, who does this? How much? Was it worth it?

Andrew

what are you talking about?

PM Jedon I know he had it done a while back...

I did. Mazdatrix did it. I cannot quantify the effect, but MazdaTrix and Racing Beat both recommend it for severe duty, so it seems like a useful mod.

-Max

what exactly is grooving your water jackets?? It sounds like making little grooves in the water jackets allowing more water to flow through, right?? @ least thats what it sounds like to me

I'm doing oil passages and water jackets when I have my reman ported.

just for your guys info, the new FD rotor housings here in japan, so im assuming they do in the states as well, have these machined grooves into the water jackets around the spark plug holes. I used FD housings when I rebuilt my FC..I cant testify as to if they help or not, but I have a 3 core koyo rad, streetported motor, perma-cool 1600 cfm fan running constantly, and i never saw above 80C on my water temp guage

i think the goal isn't so much for flow, but to increase heat transfer surface area.

Making it not smooth. Normally it would be smooth, but if you make grooves or make the surface go up and down like little waves, the coolant will touch more surface area. That will help the coolant absorb more of the engine heat, hence better cooling.

http://www.nopro.com/~jedon/porting/IMG_5311.jpg
I had it done, $200
Like the others said, hard to quantify since I did so many upgrades when putting the new engine in, but my engine builder did it to all his 12A bridgeport race engines.

WOW, I didnt know that. I guess this is where the engine builders here in the states got the idea, and I just thought they were creative haha

STEPHEN

guess I should have checked back on this thread earlier. Anyways, putting grooves in the water jackets should be similar to putting a heat sink on a computer chip, if you're familiar w/ electronics. It should help dissipate heat better. I was just reluctant to try it because I didn't want to blow a a bunch of money on something that might not work. I think that I might just save the money and put it towards ceramic coatings. I have heard a lot of good stuff about em'.

Had mine done @ KD Rotary when I had them build me a street ported motor. Dave also does the oil and coolant passages.