OP
86turbodsl
Well-known member
Ordered a new control board for the 3d printer, and then got back to work in the shop. Temp was way down from not running the boiler a couple of days, so i let it run most of the weekend catching up.
Here's the left pipe all tacked up and sitting in position.
I think the routing looks good, very similar to the stock downpipes.
Good clearance with the crossmembers.
The flange weld with 309L, mild steel flange, and stainless pipe. There was a good bit of gap between them. It was a very tricky weld. I had to dump a ton of heat into the flange and just barely nick the pipe or it would melt. Then using a modified laywire technique, i shoved a ton of 309 into the puddle, keeping it biased towards the pipe so it would cool it off. The downside is that weld is a lot bigger and hotter than it should have been, and the exhaust manifold is going to interfere. There's a cone built right into the manifold exit that i am going to have to grind down to get this to sit flat. I suspect that might affect sealing but not sure. For right now, i will call it a win and just use some copper rtv if needed. Still need to add the o2 bung and fill in the backside of the flange with silicon bronze. Then it's pretty much done.
Hopefully i can keep the shop temp up better this week. I didn't babysit as much as usual last week since it was warmer.
Here's the left pipe all tacked up and sitting in position.
I think the routing looks good, very similar to the stock downpipes.
Good clearance with the crossmembers.
The flange weld with 309L, mild steel flange, and stainless pipe. There was a good bit of gap between them. It was a very tricky weld. I had to dump a ton of heat into the flange and just barely nick the pipe or it would melt. Then using a modified laywire technique, i shoved a ton of 309 into the puddle, keeping it biased towards the pipe so it would cool it off. The downside is that weld is a lot bigger and hotter than it should have been, and the exhaust manifold is going to interfere. There's a cone built right into the manifold exit that i am going to have to grind down to get this to sit flat. I suspect that might affect sealing but not sure. For right now, i will call it a win and just use some copper rtv if needed. Still need to add the o2 bung and fill in the backside of the flange with silicon bronze. Then it's pretty much done.
Hopefully i can keep the shop temp up better this week. I didn't babysit as much as usual last week since it was warmer.
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