Originally Posted by
B18C5-EG
Eh...., that collector is bad. The welds on the collector are not consistant they seem to get large then small. Also your not susposed to run a continious weld on stainless it dosent look good and causes it to be brittle due to the heat. What amperage are you welding with? Also looks like you have some sugar inside your collector, not good. On runner #1 it also looks like you have a cavity on the 3rd weld from the flange (hard to tell from pics), where the pipe meets the flange it also looks like undercut. You realy should have cleaned the metal before welding it i.e wire wheel/laq, it would have came out alot nicer and easier to weld on. I see those welds cracking over time but only time will tell. I would realy like to see power numbers once this is finished however, interested to see how that collector effects your powerband.
The welds on the collector are all of the same thickness. must be the pic angle or how your looking at it. I'll take more pics of it so you can see it a bit better. The discoloration of the collector is because I was drilling the wastegate hole out with a regular hole saw and heated up the metal a bit. There is i little bit of sugar on the inside top of the collector because I didn't have my purge setup when I welded it up. the cavity is not a cavity it is a little bump of filler, I have only done on pass on it and have yet to bump it out "I think it looks pretty good for one pass" at 95amps. This is just a prototype manifold to see how much power it can make over a ramhorn , if any. I also have a ram horn type made up. I'll post pics and dyno charts soon