Making Parts

This week I made the down pipe for the Datsun Roadster. It was a pretty straightforward deal, I guess four times is a charm. It still took 12 hours to make these two small sections of downpipe. There's not a lot of room between the steering shaft, the cylinder head, the firewall and the frame rail! The only real surprise was the price of stainless steel, it's taken a huge jump recently. But I digress, enjoy the pics.

The wastegate flange is oval shaped and it must transition to 2 1/2 inch round pipe.

I started by flattening the round pipe to fit the oval opening in the center.

After some trimming and mkaing a couple of filler pieces out of stainless, I came up with this.

Here's the entire upper section of the downpipe finish welded and ready too go. It took six hours to get this far.

This is the lower downpipe tacked up and ready to finish weld.

This is the entire downpipe together on the bench.

And another view, you can see the O2 sensor bung in the upper pipe.