Head porting gone wrong will this work
01-19-2020, 09:42 AM
#1
10 Second Club
Thread Starter
Head porting gone wrong will this work When I cut the rocker boss out of my 799s I went to far and tried to blend back in to the front of the port and went through about an inch into the port ( cut into the pushrod guide hole) so I JB welded the port up and ported it back down. I’m satisfied with the shape of the port now but will this fix last or should I grind the jb weld completely out again and try to have it Tig welded. They’re no signs the epoxy didn’t bond just worried.
01-19-2020, 12:29 PM
#4
OP If the hole was small and you were able to get some to push through the hole to help hold it in place it should be fine.
01-19-2020, 01:05 PM
#5
I think i get what you tried to do.
You just need to take down the lump until you expose the rocker hole, and blend to what is immediately around it. Don't change the shape of the port. Sounds like you were trying to blend the whole port into that large section behind it where the wall swoops out into the bowl, and took too much out and broke through near the front of the port.
You went too big. Junk the head and try again, this time don't try to reshape the port. Remove just the rocker boss, maybe take out some of the swirl ramp, shave down the guide boss somewhat, bowl blend into the bottom of the seat. The rest of the port just smooth out the flash, don't make it bigger. Make sure the walls, top and bottom retain their shape.
You just need to take down the lump until you expose the rocker hole, and blend to what is immediately around it. Don't change the shape of the port. Sounds like you were trying to blend the whole port into that large section behind it where the wall swoops out into the bowl, and took too much out and broke through near the front of the port.
You went too big. Junk the head and try again, this time don't try to reshape the port. Remove just the rocker boss, maybe take out some of the swirl ramp, shave down the guide boss somewhat, bowl blend into the bottom of the seat. The rest of the port just smooth out the flash, don't make it bigger. Make sure the walls, top and bottom retain their shape.
The following 2 users liked this post by dreadpirateroberts:
G Atsma (01-19-2020), Ls7colorado (01-20-2020)
01-19-2020, 09:04 PM
#6
10 Second Club
Thread Starter
I think i get what you tried to do.
You just need to take down the lump until you expose the rocker hole, and blend to what is immediately around it. Don't change the shape of the port. Sounds like you were trying to blend the whole port into that large section behind it where the wall swoops out into the bowl, and took too much out and broke through near the front of the port.
You went too big. Junk the head and try again, this time don't try to reshape the port. Remove just the rocker boss, maybe take out some of the swirl ramp, shave down the guide boss somewhat, bowl blend into the bottom of the seat. The rest of the port just smooth out the flash, don't make it bigger. Make sure the walls, top and bottom retain their shape.
You just need to take down the lump until you expose the rocker hole, and blend to what is immediately around it. Don't change the shape of the port. Sounds like you were trying to blend the whole port into that large section behind it where the wall swoops out into the bowl, and took too much out and broke through near the front of the port.
You went too big. Junk the head and try again, this time don't try to reshape the port. Remove just the rocker boss, maybe take out some of the swirl ramp, shave down the guide boss somewhat, bowl blend into the bottom of the seat. The rest of the port just smooth out the flash, don't make it bigger. Make sure the walls, top and bottom retain their shape.
01-19-2020, 09:13 PM
#7
Just use splash zone A-B epoxy.
Clean/preheat spot with a heat lamp and post heat as well. When cured brush a coat of superglue on the epoxy. Sort acts like a sealer. I seen this stuff stop more leaks than I care to comment about thru my life. I have never seen it come apart. When done like this.
Clean/preheat spot with a heat lamp and post heat as well. When cured brush a coat of superglue on the epoxy. Sort acts like a sealer. I seen this stuff stop more leaks than I care to comment about thru my life. I have never seen it come apart. When done like this.
Trending Topics
01-19-2020, 10:32 PM
#8
well truthfully just taking down the boss was what I was trying to do but some how in the midst of grinding it down I sunk in just above it a little and then tried blending it all together where I got the dip and poked through. I filled the hole and roughly a inch of a slight dip I created with the epoxy. It seems bonded fine. Hopefully it’ll work.
01-20-2020, 08:37 PM
#9
TECH Apprentice
Be conservative when you port your heads. I was very conservative with my 799 heads that I installed on my Camaro. I got a set of 862 heads that I tried new stuff and now one of my bros is going to have me port his 243 heads for his '02 Vette. I'm going to be conservative with his 243 heads because he's going to put a lot of miles on his Vette. Go slow and use Youtube as a reference to guide your efforts.
The following users liked this post:
blsnelling (01-21-2020)
01-21-2020, 10:38 AM
#11
Just use splash zone A-B epoxy.
Clean/preheat spot with a heat lamp and post heat as well. When cured brush a coat of superglue on the epoxy. Sort acts like a sealer. I seen this stuff stop more leaks than I care to comment about thru my life. I have never seen it come apart. When done like this.
Clean/preheat spot with a heat lamp and post heat as well. When cured brush a coat of superglue on the epoxy. Sort acts like a sealer. I seen this stuff stop more leaks than I care to comment about thru my life. I have never seen it come apart. When done like this.
01-24-2020, 04:32 PM
#12
Is that stuff compatible with ethanol?
01-24-2020, 05:30 PM
#13