Head porting:should I grind down exhaust valve guide boss?

[LOCASH]

Hey, I am getting ready to start porting these heads on Sat. I noticed that the Exhaust valve guide boss is really big. Should I grind this down into the wall? Has anyone ever removed it completely? I have read a couple of articles but I can't really see if they have ground it down all the way or not. Thanks

 

[Xtreme Limits]

big, no no, check out mouses web site thats what me and my dad followed, http://www.cmc.net/~xero/Mousesporting.html , or ask thumper460, he knows his stock porting head skills

 

[BlackFox5.0]

I've seen someone do this before, I think it was done by Powerheads, but don't qoute me, I don't think he has any problems, but I highly suggest you don't do it, you might end up with scratched valves later on, which is bad....

 

[thumper460]

You can safely remove the exhaust boss and angle the roof of the port/bowl, so the angle is flat and to the back of the bowl. Or as the roof of the port starts out from the outside ( Header mount) it will now be flat all the way to the back of the bowl!! ( Egr bump removed and the lower exhaust bowl) a good straight shot !! Cool?? Fun huh??

Just me.........................

Thumper

 

[5.0Droptop]

Thumper rules!! Hi Mike!