Recent content by racprops

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    Update on my Ignition Module failure!

    My 93 Chevy Van running the late model computer controlled timing small distributor was also eating it 4 plug module as well... And yes I too drove for 30 years with the old HEI coil in cap distributors, and NEVER had a module failure. As far as I know there is no coil in cap for a PCM...
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    Any explicit help on removing AC components and keeping heat?

    Hello, as you live in a area of COLD and show, are you aware of how the A/C is turned on when using the heat?? How it removes water from the air before heating it and how this can make your defogger work so much better than pure wet heat that can fog you windshield. This was/is a big improvement...
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    Gas hog

    615cfm Edelbroken carb is a hot rod simple carb. Not made for MPG, a GOOD correctly sized Rochester Quadrajet with its small primates and large secondary's is a much better all around performance carb. By the way what choke setup are you running?? I foolishly blocked my intake manifold's carb...
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    QJet Questions

    Those old carbs have two major problems, leaking caps/plugs between the throttle body and the bottom of the bowl body under the main jets. While you cleaning and rebuilding you need a sealing kit for those plugs, Second is if it is still a steel shaft in aluminum body for the throttle plates...
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    The Best Carburetor?

    The Simplest carb is the old Charter/Edelbrock remake, (which MIGHT be done in china) the next is a Holly make sire you have the antiblowback valve kit to save your power valve, ( I believe that became stock at some time...) The Qjet can be a good MPG carb thanks to the SMALL primary's and and...
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    R12 Replacement

    Well you could be unable to buy any car made after 2023 as all now use the new 1234yf is flammable and it's also corrosive and WILL eat through an evap core given enough time. Progress is killing used cars. Rich
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    R12 Replacement

    More data has come to light: This just in: “The 1234yf refrigerant is mandated in any car sold in the US beginning with the 2023 model year. We're going to be seeing a lot more of this.” And: “There were a rash of evaporator failures in the early 90s Caprice and other GM B bodies. Quite a...
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    R12 Replacement

    Got more feedback from a friend who is full time serviceman: You've never seen an evaporator leak? Boy are you in for a treat with the new 1234yf systems! The pressures on these are close to what the 134a systems are, and the components (except for the service ports) are the same between the...
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    R12 Replacement

    OH I see those, and of course they seem to mainly start with newer cars, newer that my 03s. And nothing will surprise me with the newer computer engineered to fail cars, I just said I have never seen a leak, nor heard of a leak in any of my cars and any of all my friends, who's newest car is a...
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    R12 Replacement

    All I can say is what I have seen in some 60 years of driving A/C cars and some 28 old used cars as i never bought a new one, so I owned older cars and drove them in Phoenix AZ were we use the A/C about 6 months each year. NOT one ever had a leaking evaporator, leaking condensers yes and most...
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    R12 Replacement

    If I want to step back up to R135: It was and may still be suggested to replace all the old “O” rings with new green r134 o rings. Then Flush the entire system, then install new orifice, drier/accumulator, and add 8oz PAG oil, suck it down to -29" for at least 1 hour (overnight is better) and...
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    R12 Replacement

    I was putting aftermarket A/C units into cars back in the 60s, and was Card Carrying HVAC serviceman for a couple of years in the 70s. I now only do A/C service on my own home and cars, and help out a friend ever once in a while. Every used 2000+ Ford I have had has suffered "THE Black...
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    Fire out of top of carb

    How do you put out a fire in a carb?? Crank the engine with the coil disconnected, it will suck the flame out...after-all these are fire breathing engines... Last question: a good carb shop may be able to put in a Heleocoil or retread it for a larger filter. Rich
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    Transmission Identification

    I loved a 200R4, the have a lower first gear than a 700R4 and a taller Overdrive ratio: 200R4 ; 1st gear: 2.74 2nd gear: 1.57 3rd gear: 1 4th gear: .67 Gear Ratios: First:3.059:1 Second:1.625:1 Third:1.00:1 Fourth:0.069:1 And in many cases it can directly swap in place of a TH350 like I...
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    Want to build a good horsepower, good fuel economy engine for a 1978 c20 with stock 350. I don't know much and need help.

    I am 75 and starred working on cars in 1965. You would wise to read this book: “Trailer Life's Rx for Rv Performance and Mileage Paperback” It is one of the best books on what to do. https://www.amazon.com/dp/0934798060/ It covers cams, carbs gear ratios ETC. I am building a 383 for a 93...
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