it started as a 16"x4"x1" chunk of 6061-T6 , i made alot of chips :D
this is for 99 miata head.still needs some minor portmatching

 

why so thick? is there going to be some injector bungs?

 

its only .550" thick, its gonna warp some during welding, i left the .050 to resurface it after the runners are done. a stock flange is around that thickness , no injector bungs

 

I'd at least radius the corners and chamfer the edges, doesn't really take anymore time and you don't have to worry about cuttin yourself on the edges.

 

i did this all by hand, with the exeption of the holes, i pick those up using save point(easy trak). it would been a pain in the *** to cnc this at the shop i work at cause our ez trak has a head spacer so we can fit v8 blocks on it, anytime you do thin plate work right off the table i have a hard time getting the cutter down low enough, so i have to use riser blocks and long *** cutters. i may radius the square corners.

 

oh, ok. i thought it was still 1" thick!