you might need a weldcraft micro tig torch or wp-24w and wp-24 if it isnt water cooled depending on how tight it is.
I dont know if just a small cup is going to let you get in there if its really tight.
on my dynasty 350 i have a standard weldcraft torch pretty short cup and a short back cap it gets in most places

 

Have you machined the casting back to allow access? Done several castings where I removed a bunch of material to allow the torch access.

 

I haven't removed any material, but it looks like i can mill some casting off the rocker pad. Its pretty beefed up in that area. That should free up some room to work. I looked into the micro torches too. Maybe i can get by with what i got. Just need to build up some so i can get more area. Thanks for advice.

 

What head?
SBC, you get most of it from the deck side and fill at the top side. Kinda 75/25 split

 

Yea they are SBC Patriot 220. Cnc from patriot & gasket matched to 1206. After the port entrance it chocks down really bad. They are for a customers engine & buying bigger heads is like askin him to jump off a bridge lol. short block is a 436 sbc with 14.1 cr. just tryn to get most i can out of these castings. thanks

 

Is there a certain area i can open up to at the pinch point without having them sent off & some program done to them. Tryn not to be a cheap a$$ but he has got a good bit of money in them already. The extra cost of cnc from Patriot & now the runners have been welded. Maybe can get by with a .250-3.50 offset rocker? Kinda bad decision on head selection, but tryn to make the best of it.

 

have you measured the pinch?

 

This is what i measured at pinch: port width 1.053 & port height 2.155 Thats like 2.269 without corners figured right?

 

sounds right.
if you make it too big at the pushrod and dont open the rest of the port it would be best to leave it alone.
how big are you trying to make it?

 

Maybe 2.70+ Trying to feed 436 ci & a couple hits of nos.

 

have you measured how thick the rest of the head is? youll need to make the rest of the port big.
its gonna be a whole lot of grinding

 

No i havent't really measured the rest or the port. They were cnc'd from patriot but that dont mean there has been alot of material removed. The port just looks ridiculous. It's got a good size 1206 opening & then the pinch area looks like it protrudes into half of the runner making it look tiny.

 

Raise and lower the port as much as you can before welding, if your not running shaft rockers I think .150 offset is about all you can get.

Honestly if you don't have access to a flow bench to check air speed and profile you may hurt what you have, if the port is balanced to keep the short turn in check, opening the pinch can go into choke quicker.
If it's truely a budget and just want to try it, by all means open the pinch as wide as you can before breaking through the weld. You should be able to get 2.5sq" or so with a standard rocker/pushrod design.

 

Ok guys, thanks for all the help & advice. Decided to send them off & have them worked with flow bench results. Read too many things about air speed Just to start opening them up without a way to test what is going on. Thanks