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Another vintage Stewart Warner Green Line gauge for the collection

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Here’s a small sample from my modest Stewart Warner Green Line gauge collection. Photos by author.

While there’s still plenty to do in the garage during winter, the really cold weekends are spent in the confines of my much warmer house, hunting down parts and supplies online for things that need to get done once Spring returns. That search often reveals items that may not be do-or-die necessities, but bits I want anyway. Purchasing criteria for such parts is that they have to be considerably cheaper than the prevailing prices.

I’m a fan of vintage Stewart Warner Green Line gauges and I’ve collected a few over years. I’ve installed a voltmeter and oil pressure, water temp and Motor Minder (vacuum) gauges in my ’67 Buick GS 400, but I’ve also continued to seek out Green Line gauges that monitor other engine vitals.

After some more cleaning, this fuel pressure gauge will be a welcomed addition.

A recent find is this Green Line fuel pressure gauge. I had seen others selling for as high as $100, so when I spotted this one for $25.99 I grabbed it. Of course it’s not without its cosmetic issues. Most of those more expensive gauges looked NOS and one of them actually was. This one, however? Not so much, hence its price. It was really dirty on the outside. A cursory exterior cleanup revealed that some of the dirt and dust is actually behind the lens.

This Deluxe gauge features a “chimney” on the back to house a light socket and bulb. However, they’re missing, leaving an open hole for dirt to enter the gauge over the years that it was out of the car. I’m not sure how I’m going to address that yet, but it will still make an interesting display item.

I may test the gauge under the hood, when warmer weather arrives, just see if it works correctly and safely. If it passes and I do decide to install it in the car at some point, a fuel pressure isolator will be mounted in the engine bay plumbed between a braided fuel feed line from the engine and a braided fluid (that’s not gas) line to the gauge. This way the benefit of being able to read the gauge from the driver’s seat can be realized, but no fuel will pass into the passenger compartment. The isolator and lines will add significantly to the cost of the installation, but I’d rather not mount the gauge outside on the car.

Since the carbureted engine that it would be monitoring may reach only about 6-psi fuel pressure maximum, a fuel pressure gauge that read 0-to-15 psi may seem more practical. However, the 0-to-30 psi is the only one I’ve seen for Green Line gauges over the years. At least it has delineations in 1-psi increments and of course it matches the other gauges in the car.

Do you appreciate the appearance of vintage gauges? Tell us about your favorites.