Porting stock ex header??

**mach5racing4** · 02-10-2005, 04:38 PM

Has anyone ever ported or heard of porting a stock 400ex header pipe? please let me know thanks Bob

**boricua** · 02-10-2005, 06:32 PM

if you mean grinding the welds, you wont notice a difference.
if otherwise, explain...

**mach5racing4** · 02-10-2005, 06:40 PM

i meant widening the end that mounts to the head

**boricua** · 02-10-2005, 06:49 PM

unless the port on the head is bigger than the flange on the header, making the header bigger wont make a noticable difference

**mach5racing4** · 02-10-2005, 07:27 PM

thanks

**300ex13** · 02-11-2005, 12:39 PM

my friend did it and the only time he can notice is WOT and we ever get that fast

Thread: Porting stock ex header??