Recent content by Rebus
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R12 Replacement
It's a butane/propane mix, which works very well in an R-12 system at much lower pressures (less is needed). This means reduced load on the compressor. It's compatible with the mineral oils used with R-12. However, you don't want to mix it with R-12. If you switch to butane/propane you have to... -
Bi-fuel Option
I have a 1978 K20 Custom Deluxe 350 with dual gasoline tanks and dual propane tanks -- it's a bi-fuel truck. I don't believe Chevrolet themselves installed the propane option but that the conversion was done by a third party at the time. Anyone have information on this option? This was not a...- Rebus
- Thread
- Replies: 0
- Forum: Tech Discussion
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Clean old windows- years of gunk!
Don't use anything abrasive! It will leave the glass with a permanent haze and even dangerous to drive at night. No cleansers, no steel-wool, no scouring pads -- even cheap paper towels will damage glass. Out of the sun, start with a soft cloth or pad soaked in a mineral dissolving solution...- Rebus
- Post #15
- Forum: Glass & Mirrors
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1978 K20 Gas Gauge
Just a follow-up, turns out both sending units went bad. Instead of the 0-90 ohms, the senders still vary resistance with float level but in the MegOhm range. Confirmed the gas gauge goes offscale high with open circuit, to empty if grounded. Truck is apart awaiting backordered fill and vent...- Rebus
- Post #7
- Forum: Tech Discussion
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1978 K20 Gas Gauge
Interesting. Meanwhile I checked with a professional mechanic yesterday and he said going beyond full indicates a short to ground. Seems there's a lot of contradictory information floating around. I suppose there's no way to check the sending unit grounds without dropping the tanks.- Rebus
- Post #3
- Forum: Tech Discussion
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1978 K20 Gas Gauge
I have a stock 1978 K20 with dual tanks and the gas gauge has quit working. It's normal resting point is F but when the ign key is turned on it goes beyond F to 3:00, pegged. It doesn't matter which tank is selected. Looking at previous forum posts I see conflicting comments about pegged full...- Rebus
- Thread
- Replies: 6
- Forum: Tech Discussion
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Getting rid of old gas
You can get away with that easily in a carbureted engine in the summertime but I wouldn't do it with fuel injectors. It can gum them up pretty quickly.- Rebus
- Post #11
- Forum: Tech Discussion
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87 Stock TBI 350 air cleaner lid flip upside down? Does it help? does it hurt? good or bad idea?
Gale Banks actually dyno tested the open vs stock filter with closed hood and demonstrated the open filter had a significant HP reduction.- Rebus
- Post #12
- Forum: TBI & EFI Conversions
