View Full Version : ground off headpipe welds
kajunracing
03-26-2003, 12:37 PM
what the hell r u guys doing to your head pipes and why? you have to forgive my ignorance Im from the south!:devil
trxex
03-26-2003, 01:19 PM
honda welds the flange on the pipes on the inside, leaving a sloppy build up of excessive weld inside were exhaust flows. by grinding the weld smooth a 15% increase in flow is acheived.(every little bit helps) when doing mods!:cool:
dariusld
03-26-2003, 01:34 PM
15% increase in flow? :rolleyes:
trxex
03-26-2003, 01:42 PM
thats what i was told. i dont know if 15% is accurate ,but there is no doubt a increase in flow. j/a . :devil
kajunracing
03-27-2003, 01:06 PM
thanks for the info,
400exdad
03-27-2003, 01:08 PM
Kajun, it is worth it and you will feel the difference.:macho
Newbie400ex
03-27-2003, 03:44 PM
I measured mine before and after. I ground out .090". (about 3/16") out to 1" diameter. 9% increase. Theoretically this translates out to quite a bit more when it comes to flow. (me heavy 'quipment mechanic :macho )
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