Quote:
Originally Posted by sonu
Any update?
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There has definitely been some progress, but we would like to get it to a certain point before making an update.
We’ve also been working on some other projects that have been taking time away from this car.
A good friend of ours asked us to help him do a set of individual throttle bodies for his ‘73 Volvo 142. It’s powered by a 2 liter pushrod inline 4 called the B20 (no, not
that B20
).
Here's one of the initial mock up photos. The throttle bodies have been stripped down and moved apart to check the stack-up and alignment.
When we had figured out what spacing we needed on the throttle bodies, Alex turned new spacers and extended the long bolt on the top side. I fabricated a new brace for the bottom of the throttles.
Alex fixtured the cast manifold in the mill and machined the mounting surfaces flat and parallel. They turned out to be anything but because he needed to take over 5mm off the head side to get a surface that was even close to being parallel.
Welding the throttle barrels to the Weber flange. In this photo you can also glimpse the step that was turned in to the mouth of the throttle body. The custom made velocity stacks slip in there and get locked down with a small grub screw. Changing to either a plenum, filters, or different length velocity stacks only takes a few minutes.
A small part of the weld bead had to be milled off to make clearance for the bolt heads. It's a pretty tight fit.
Turned the fuel rail ends between centers to prepare for welding.
Boring out the injector holes.
Progress shot.
The fuel rail needed to have a small notch milled out to clear the bolt head.
We extended the linkage brackets by simply welding on longer tabs to fill the gaps we created earlier.
At this point the manifold was nearing completion, so we decided to add some "flair" to the fuel rail.
Here's a quick shot I took of the fully assembled and completed manifold. The casting got another round in the mill to clean up a few mounting surfaces and to get rid of whatever ****ty company name was cast in to the thing.
This is getting shipped out shortly, where he'll be able the finish work like re-plating the linkage brackets, port matching, and general prettying up.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
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