How can I check the condition of a 20 year old supercharger? How would you rate a 20 year old supercharger?
Hello, It is a Dyers supercharger about 20 years old for a SBC. I do not have any knowledge of superchargers so I thought to post questions here.
What? Nobody is going to ask how much a hen weighs. Has it been in use for 20 years? Or sitting on a shelf for 20 years?
***ume it’s a core . does it spin freely ? any play or noise from the bearings ? Any scoring , marks , scratches on the housing or vanes ? without taking it apart or seeing it on a running engine it’s a bit of a **** shoot does it come with the belt drive ? Intake ? Carbs ? Brackets ?
If this is the case, I would strongly suggest you study up on superchargers - there are plenty of books. Some members may recommend the best ones. Do your homework first, it’s much better than asking a bunch of random questions. Once educated a bit you’ll be able to ask better questions, make better decisions and hopefully avoid regrettable purchases.
^^^Good advise^^^ I think there are also some good You tube videos that will give you an idea of what is involved. There's good info in the SA Design book "Street Supercharging" by the late great Pat Ganahl.
If you have the manifold to go with the V series your on a good start. Look at the rotors for scoring and inside the housing. You can use a long feeler gauge to check the clearance between the rotors to case and rotor to rotor.
deskjet, I understood your question. Perfectly. I am unable to help as I know squat about superchargers. saltflats seems to have given good advice. Ben
http://www.dyersblowers.com/ Call early. Last i hear Gary is all but a one man show and is done working for the day before 2pm central time.
dyers super chargers were and can still be a good super charger. The problem with the question you posed is that there are a lot of variables to consider to determine the blower's true condition and worth. Without knowing the variables state, it is impossible to give a proper quantifiable answer or to tell you what areas to pay extra attention to. If I were to ask if John was a good guy, how could you possibly answer without knowing anything about John? The same holds true here.
You can try to look inside and see if the inner walls of the case are scored or not. Scoring may/may not be a problem, just depends on how bad it is. Also look at the rotors as you rotate it and see if they are damaged. Thats a very preliminary check. Normally you are going to want to check the clearance between the rotors and the case with feeler gages. For a street driven blower, you usually set it up with more clearance than a race blower. I would suggest purchasing this book and gaining a little knowledge that will help you decide how to proceed. There is info on rebuilding and you can decide what you want to do once you get some good info. Look on Amazon.
Hello, We had access to a large variety of used superchargers when we were ready to get to the next level of our Gas Coupe/Sedan Willys build and racing. We already had a 6 Stromberg carb 283 SBC motor with components for street and strip activity in the original build we spent months building. We also lived near several hot rod /drag race speed shops that had their share of superchargers ready to sell to anyone. The fun thing for my brother was that he had talked to several diesel mechanics near our house in the harbor area. This harbor area was home to plenty of truck dealers, parts and mechanical repair places. Wilmington is on the border of Long Beach and the local harbor area where diesel trucks are more common than hot rods or station wagons. We could have our pick of where our 671 supercharger was going to come from for our needs. Our top mechanic friend in Los Angeles even had a new 671 accessible for our choice if we wanted it. It was new and modified for racing, but we knew it was a little expensive for our tastes. We also knew he was going to give it to us a a super low cost, with him taking the brunt of the original cost. So, we told him we were thinking about the choice. He already got the newest Isky-Gilmer Belt Drive Kit + Edlebrock manifold from his connections and that was a life saver for us. So, my brother said that we were going to go to those diesel shops and buy one, new. Then we would know what kind of condition it was going to be when we bought it. Those shops had all sorts of pricing for 671 versions, still in new conditions, but different variations. We drove over to a small shop near our house and saw a 671 bolted onto a showroom floor display. As we were looking at it, the salesman came over and remembered us from our previous visit. So, he told us that he would make a deal for that particular 671, the “new” display model at a used price. It was due to the 671 having been on the display motor for several months. So, it was technically a new one, but now, could not be sold as new. Hence the discount. He told us he had a brand new one on the shelf in the back, but it was significantly more. He had ordered another one to be sent to a chrome polishing company and it was coming back with a shiny finish to be bolted on to this floor diesel motor. A red motor with a shiny 671 standing out from across the showroom floor and easily seen from the busy street outside. But, he had to sell this old/new 671 at below cost just to get it off of the display motor. Jnaki It was a deal we could not p*** up as we knew the costs of the ones we had seen at the speed shops. Now the discounted price was good for us. We now could have Reath Automotive’s top blower spe******t do a total rebuild and get it ready for racing specs to fit our Isky Gilmer Blower Belt Drive kit. A similar finished look for our new/old race spec 671 blower add-on for more horsepower. Who doesn’t need “more horsepower?” The reliable 671 + 292 SBC blower spec motor took us to a 12:60 e.t. for our time. The national record was 12:40, so we were on the right track. Pun intended for our weekly Lion’s Dragstrip journey in drag racing in the Gas Coupe Cl***es. Note: Today, the guys that have the experience in superchargers got their start during our racing adventures. One is Don Hampton’s Blowers: https://www.hamptonblowers.com/superchargers And the other one is a company my high school friend started and brought to life as Littlefield Blowers… https://www.littlefieldblowers.com/ https://www.jalopyjournal.com/forum...-to-buy-a-roots-blower.1300519/#post-14979164
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