One-Wire Alternators: Are They Better Or Just Easier To Hook up?

Knowledge of this exclusive design is very important when up-grading the Chevy electrical system. We need to get electrical power from the alternator to the parts—not just charge the battery. At the time of this writing, the popular Chevy main power system is about 40 years old. The original version was installed with the first alternators, in Chevy models. We often expect better performance from these cars than when they were new. Routing and distribution of alternator power output is handled by the wiring system.

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The 9 cap is available at your local GM dealer. Ask for AC Delco type RC32 part and a 10 cap is available at most autoparts store under a Stant part number , if they don’t have it, have them order it for you. The lower pressure rated caps are not carried by the store much but they are available. Wright One item that makes the radiator leak is using the wrong Pressure Cap.

Jan 12,  · Need a little more info than “Chevy Alternator”, and also why not just run the correct alternator? Need to know of the alternator is internally regulated, or externally regulated, and figure out how that alternator is wired, and if it’s even compatible.

This page is an explanation of the theory of operation behind the alternator and the generator. If you know how these critters work already, then this won’t matter much to you. If they are nothing short of alchemy and you need to work on or need to modify your charging system – then this page is a must-read for you. I wrote this as a side-bar to my work on various projects, see the High Amp Alternators for older GM’s and Alternator Conversions for GM’s articles for more details on each area. Each section describes a basic component and how it works.

My experience and thus this page is heavily tilted toward GM vehicles, so if your manual says different things for your car, trust it instead of me. I know Ford and Chrysler are fairly close to this, but some imported models use some really weird variations on these basic systems. The basic theory is the same, but some of the wiring is, um, a bit more funky that is described here. In particular, I believe both the Ford and Chrysler alternator systems were externally regulated until well into the ’80s, and neither has the remote voltage sensing feature.

There are unique issues to be aware of on each one, so I’d suggest that you go read up on them elsewhere before you attempt a non-GM swap. Or, just be like me and stick a GM alternator in it even if it’s not a GM. The only test will be if you know enough to do what you want to do without messing anything up. Conversely, if you move a wire through a magnetic field, a small current electricity is created in the wire.

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Philly area Not a fan of 1-wire alternators in a car that’s going to see a lot of idling and low speed operation. They’re easy to hook up, but their downfall is a dramatic fall-off in output at low RPMs plus they can’t run the idiot light on the dash, which I kind of like to keep functional. I think the 12SI style alternator originally came out around

Simple, One-Wire Hook Up As you might assume, the concept behind a one-wire alternator is that there is a single wire used to connect the alternator to the battery. The voltage regulator is internal, and there are no other wires that need to be connected to your electrical system.

Hello – we have replaced the alternator twice Hello – we have replaced Hello – we have replaced the alternator twice this week, and the battery once in our Toyota Sienna van. Unfortunately, even after replacing, when we take it to Advance Auto or somewhere like that to have them test the battery, they say the alternator isn’t putting out what it should to the battery, and that the battery is being gradually drained.

Is there something else I can check? Could it be a fuse issue or something so that the electricity isn’t making it ‘fully’ from the Alternator to the Battery? Last bit of info: Current measurement on a 2-day old new battery is When the car is running, only very slightly higher When I rev the engine to RPMs, Thanks so much for any help you can provide. I will do my best to answer your question A few questions for you you say 2 alternators and one battery What led you to this?

Where are the alternators being bought from?

Alternator hook up

While it does have some reserve power for small accessories, the extra amperage draw created by a high-power audio system or race electronics, or lighting, etc. Luckily, a simple alternator upgrade can prevent such a catastrophe. Deciding if you need a more-powerful alternator is easy once you understand exactly what kind of power, or amperage, you need. Amperage is defined as the maximum capacity or maximum volume of electricity an alternator is capable of producing.

While many alternators have a percent to percent power reserve to handle additional accessories, this is often insufficient capacity to power high end audio systems or other high-amperage items. For example, a typical watt stereo system draws upwards of 60 amps when cranked.

Oct 24,  · Chevy Alternator Wiring Diagram. Discussion in ‘The Hokey Ass Message Board’ started by gahi, Apr 25, I didnt want to run a warning light on the excite wire and tried several way to hook it up, finally hit on a good way. 39 Chevy, That is an awesome idea. I’ll .

The use of multiple generators on a given engine, strategically mounted for example on opposite sides of an engine can also serve to remove side loading stress from engine bearings while still allowing the installation of a large charging system. Therefore, if quickly charging batteries is important, a ZENA power generator is an ideal solution. A number of features make ZENA power generators different from standard high current marine alternators: VR voltage regulator and WC.

Ultra heavy duty output terminals are fabricated from silicon bronze almost pure copper, but more durable to insure minimal corrosion in marine environments as well as minimal electrical resistance to the huge charging currents that ZENA power generators can produce many alternators use high resistance, easily corroded, mild steel terminals on their alternators. When connected to take advantage of this feature, high amp alternator charging currents can flow directly to the batteries WITHOUT having to also pass through hull or fittings.

This feature also makes connection of generators in series parallel combinations possible. Rectifier heat sinks are equally robust allowing reliable high amp operation in exceptionally hot operating environments. For example, in our SR series, which is designed for exceptionally duty, we use twelve 12 individual rectifiers double the amount found in a typical alternator — mounted on double solid copper heat sinks in a separate cooling compartment isolated from the hot internal generating components.

This provides most of the benefits found in an externally rectified alternator without requiring extra engine compartment mounting space or requiring a more complicated installation or extra wiring. Bearings are oversize, and much higher quality than found in a typical alternator — equally capable of handling high side loads and high temperature operating environments.

1-Wire Alternator Conversion

The alternator converts the engine’s mechanical rotations into an electrical current using a pulley-and-belt system. This current is fed to the car’s battery, charging it for later use. In newer models, the alternator is internally regulated and can be connected with only one wire linked to the car’s battery. Disconnect the car’s battery before beginning any work to avoid the risk of electric shock while wiring your alternator. Tighten the mounting bracket onto the alternator using bolts.

The SI series alternator is a factory GM part found in various vehicles from to It’s available in a variety of amperage ratings, and has become a common replacement for the externally regulated item found in earlier vehicles.

Make use of the second factory battery tray and have the install look as factory as possible. These are special crimpers used for “open barrel” terminals. You can search for “delphi crimpers” and find them. The crimpers allow you to make this type of crimp, which is critical. If the crimp is not right, the terminals will not slide into the connector. Start by installing the battery isolator.

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The idea was to explain in detail the steps it takes to properly rebuild a 6 Cylinder Engine. From start to finish, this article goes through every aspect of a rebuild, from tear-down, to the engine shops work, to rebuilding each subsystem, right through to engine adjustment and run-up. This article was completed in the Summer of with really great results.

The charging system of your Chevy is a vital piece of the reliability puzzle, and if you’re relying on a crusty original alternator you might be on borrowed time. The fact of the matter is an.

Mike was the project manager for the Performance Vehicles division at GM then and is now the operations manager at Lingenfelter Performance Engineering, so he knows a few things about the LS platform. Fast forward just two years and the aftermarket is in high gear, producing a lot more products to support such a task. It was time for us to bring that story up to date and also show y’all where to get the latest and greatest products for the LS.

We have broken the story up into specific sections like wiring and exhaust that will highlight the things you need to consider and the products that are available. Engine First off, you need to know where you can actually get the LS motor for your swap. Obviously a wrecking yard will be a good place to look for used engines. Try and pick up the computer, harness and gas pedal if at all possible. If you would rather have something new, then you will need to contact an aftermarket company.

These allow you to build LS-based engines all the way to past ci. GM Performance Parts, like we mentioned earlier, has the entire LS family covered and is really proud of its eco-friendly E-Rod program. In a nutshell, the E-Rod package is a crate engine combined with engine wiring harness, engine control module, exhaust manifolds, catalytic converters, oxygen sensors and sensor bosses, fuel tank evaporative emissions canister, mass airflow sensor and sensor boss, accelerator pedal for use with the electronic throttle , air filter and instruction manual.

Using an advanced, highly efficient four-lobe supercharger, the LSA 6. The dyno-tested package made horsepower and lb-ft.

How to: Remove a fan clutch without a fan clutch tool

It rained when I left and for the length of Oregon. One thing I learned on that trip was that my factory generator could not keep up with a couple days of driving with headlamps on, Kodiak heater on high and the 2 speed wipers going on fast. By the third morning there wasn’t enough juice left in the battery to start the engine. A lot of Series Land Rover folks have learned that lesson over the years, and many more have added electrical components such as auxiliary lighting, radios, heated windscreens and electric fans that draw even more electricity.

There comes a time when you decide the old generator just doesn’t do the job of keeping your battery fully charged while you run the vehicle. You start asking around and everyone tells you to get a Delco 3 wire alternator with a built in voltage regulator.

Installing a one-wire GM alternator makes the process of adding an alternator to a vehicle originally equipped with a generator very simple. One-wire alternators are also used by people in the performance car field to help make the car lighter as there are fewer wires to add weight to the vehicle.

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You will, however, want to upgrade both the braking and suspension if you are planning on “competing” with the car. We don’t offer those items and I don’t have any preferences or suggestions who to use – there are many excellent vendors for you to choose from for those items. Check online Z groups, like www.

I hope you will read this information carefully.

Wiring an alternator. This diagram shows how to wire a Delco (GM) internally regulated 3-wire alternator. This particular model (10SI, used in the s and early 80s) is the one you’ll find on the generation of GM cars most often used in demolition derbies.

This design uses a self exciting field which means when it spins at a sufficient RPM, the alternator will start charging. When the engine stops rotating, it turns itself off. Keep in mind that the engine has to be turning around RPM in order to spin the alternator at RPM in order to get it to start charging. Just start the engine and “blip” the throttle in order to get the alternator to turn on. You don’t have to keep the RPM up, once the alternator is energized with a quick blip you can let the engine idle back down.

If the max rpm is exceeded it can cause damage to the internal armature and cause a failure. Please keep this in mind when choosing your crank pulley size. Note that most street pulleys are ratio, which for a typical racing engine can spin a alternator too fast. Do not over tighten the belt! Install the belt and adjust so that there is approximately 1″ free play in the belt when measured half way between the pulleys. Don’t forget to tighten all bolts. Charge Wire Size This alternator can output a maxiumum of 85 amps at 14 volts, for the best performance and reasonable amount of voltage drop, you should use a 8 AWG cable for a 10 ft or shorter charge wire.

LS Engine Swap Tips – Heart Transplant

An expert who has achieved level 2 by getting points MVP: An expert who has written 20 answers of more than characters. An expert who has answered 20 questions.

Alternator hook up – Yes question is I have a Chevy impala with the eng it have a alternator on it so I up grade to a an I want to no can.

Where does the wiring harness from the alternator on an Chevy Celebrity run to? One is for grounding, one is from the battery, and the other is from the voltage regulator. In a GM alternator however, there may be two wires or only one wire. It depends on whether you have an external voltage regulator or not, and if the alternator simply grounds itself to the bracket it’s attached to.

The best way to find out is to trace the wires to their sources. How many wires go the the positive side of the starter on an 87 Chevy truck 4X4? If it’s anything like earier 80’s there will be 2. One from the battery and one from the harness.

Alternator DEMO Wiring, connection to Battery, Capacitors, Inverter, Modification