CLASS RACER FORUM - View Single Post

Mark Yacavone · 12-15-2015, 08:57 PM

I still use aluminum and a torch, but I don't fill it from the port side anymore..Too much room for error and extra work.
Instead I make little tin or aluminum tabs that are the shape of the passage, with a little tail on them ,which I prop up against a bolt stuck down in the valve guide.
I melt more than enough aluminum, skim, and pour it down in with the intake side horizontal, leaving it a little high. I then smack it with a hammer a few times while it's still warm. Grind it flush with a 40 grit soft disc and some cutting grease.
Pull the tabs and you're done.

I've been told by one of the best in the business that leaving the fill recessed back just a little, doesn't hurt the flow at all.

12-15-2015, 08:57 PM	#10
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,794 Likes: 2,884 Liked 5,087 Times in 1,938 Posts	Re: Tips on filling Exhaust Crossover I still use aluminum and a torch, but I don't fill it from the port side anymore..Too much room for error and extra work. Instead I make little tin or aluminum tabs that are the shape of the passage, with a little tail on them ,which I prop up against a bolt stuck down in the valve guide. I melt more than enough aluminum, skim, and pour it down in with the intake side horizontal, leaving it a little high. I then smack it with a hammer a few times while it's still warm. Grind it flush with a 40 grit soft disc and some cutting grease. Pull the tabs and you're done. I've been told by one of the best in the business that leaving the fill recessed back just a little, doesn't hurt the flow at all. __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers Last edited by Mark Yacavone; 12-15-2015 at 08:59 PM.