The opti has two parts, a lowvoltage optical section and a highvoltage cap and rotor section. It is mounted on the front of the engine, above the crank snout and behind the water. The distributor cap on the early versions of the optispark until 1995 were not vented. This is the same distributor you buy from any gmchevrolet dealership. The distributor cap and rotor are required to handle the additional load to bridge the gap of eight. Brand new complete optispark ignition distributor w cap. At this point, you should look at the old optispark and make a mark of where the notch spline is. Where do i return my accel optispark ii broken distributor for exchange. The distributor is called an optispark, and is located on the front of the engine behind the water pump.
Your vehicles distributor cap represents a critical part of the overall ignition system. To prevent any delays with your order you should watch for. Yours is cracked and shrunk, itll let in moisture and dust. Any position other than the original will change the timing with a severe detrimental effect. Ateam performance complete optispark spline drive distributor with spark plug wires and wiring harness compatible with chevy gmc chevrolet 9294 lt1 v8 5. Two distinct faults were at work when this occurred. Check for cracks in the plastic of the rotor and distributor cap. Bailey ltcc coil conversion module lt1 to ls1 ignition.
Jump on to discuss axles, suspensions, engines, mudders, 4x4s and more. These distributors feature an aluminum housing with heavyduty oilite bushings, and a glassreinforced cap with high dielectric strength and. Before the inception of the dynaspark, ltx owners have been riddled. These distributors feature an aluminum housing with heavyduty oilite bushings, and a glassreinforced cap with high dielectric strength and aluminum terminals. Replace your stock lt1 optispark distributor with our allnew summit lt1 optispark i or ii distributors. Top street performance optispark distributors anyone. The lt1 engines used two different distributors, the early version 9294 has a much smaller diameter bushing for the distributor drive, while the 1995 and later is larger. They feature an allnew construction with heavyduty oillite bushings and polished.
We can guess with voltages and cracked distributor. How to check and repair a distributor cap it still runs. The gm optispark is an opticallytriggered ignition distributor used on the lt1, lt4 and l99 engines. The optispark distributor was designed to handle spark voltage in the 40,00045,000 range at peak load. The distributor also disburses current to the spark plugs initiating engine performance. Jun 17, 2009 pavement sucks is an enthusiast website covering offroad activities, vehicle modifications and repairs, and land use issues. This 1996 chevrolet corvette coupe has msds pro billet lt1 distributor for 19921996 corvettes installed to replace the factory optispark ignition unit vette magazine. The ones from my old one are bent and broken along. Acdelco 19212299 replacement optispark distributors autoplicity. Ignition technical support holley performance products.
Where is the distributor cap on a 1996 chevrolet impala. First generation lt1lt4 oem ac delco optispark distributor. Its a good idea to put loctite on the 2 screws that hold the rotor down, they tend to come loose and will ruin your. Excessive carbon tracks embedded on the distributor cap terminal. Harness may not fit all applications and you may need to use your original harness or modify the new one as shown below. Put cold water on a hot optispark, its going to suck the water in. Race proven quality our sponsored nasa cmc2 camaro completed an entire race season on a single aip optispark distributor,winning 1st place in the northern california camaromustang challenge 2 series. Can be the culprit for oil leaks on the drivers side front of your engine. The optispark is a distributor with a two track optical position sensor, a keyed drive shaft, an ecm, a single ignition coil and driver and conventional secondary wires and park plugs. Imho, it seems like a waste of time to replace just the cap and rotor, unless there is a noticable problem with the cap and rotor thats currently on there. Finally, an allout performance distributor from msd to replace the oem gm lt1 optispark. The distributor cap and rotor are required to handle the additional load to bridge the gap of eight worn out spark plugs. Minute cracks in the distributor, between the spark plug terminals, not always visible, will permit the high tension current to short circuit and the result is erratic operation of the engine. Automotive electrical, ignition parts, ignition distributor parts, distributor, overstocked optispark distributors 1104032, 10457702, distributor, automotive electrical, ignition parts.
Early optispark systems had a tendency to collect moisture that would interfere with the function of the optical sensor and cause the engine to run very poorly. The final touch is the installation of a vacuum ventilation hose assembly with the correct check and restrictor valves to prevent distributor cap damage. The coil wire stub on the distributer cap was broken off when it arrived. Can i replace the cap and rotor without ls1lt1 forum.
Optispark solutions followers berrington1 650 berrington1s feedback score is 650 100. Feb 01, 2001 the optispark distributor is positioned on the front of the engine underneath the water pump, and works well in its designed environmentwhen it works. This happens because the cold weather freezes or cools down the cap and then the sudden heat when starting the engine causes cracks in the cap. Would a loose distributor cause your car to not start. Online shopping from a great selection at automotive store. This distributor includes everything needed for the assembly distributor, cap, rotor and coil,replaces damaged or weakened oem distributors. As soon as you drive in the rain, wash your engine, or. Chevy ignition and electronic controls guide for ls1ls4. Vented optisparks use a venting system to remove moisture from the cap and body of the distributor, and also use a larger diameter drive system, which. Surplus inventory offer of manufacturer, asia distributor. The ltcc is technically superior to a distributor but on the practical side it might help the car if it is making twice or better stock power.
Jul 02, 2012 the distributor also disburses current to the spark plugs initiating engine performance. Next, take a 732inch yfitting and cut off the ends. I even had the opti that was cracked where the cap meets the base. It still uses the optical module in the optispark, but no high voltage is passed through it. When you replace the optispark distributor on a 1992 corvette, it is important to install the new distributor in the exact same position relative to the direction of the rotor and housing.
In fact, the problem becomes wider in cold weather or low temperatures. I need to get a new distributor cap on here that will seal properly. Always replace the spark plug wires using new retainers if yours are broken. Comes complete with all new parts including the cap, rotor, mitsubishi optical sensor, and all necessary timingposition sensors. First thing i would do is pull off the flywheel cover and take a. Restore spark to your lt1lt4 motor with this brand new stockseries distributor from aip electronics. Each distributor is equipped with a billet aluminum housing. A distributor is a device in the ignition system of an internal combustion engine that routes high voltage from the ignition coil to the spark plugs in the correct firing order.
The distributor gets a lot of heat, and the original seals have a tendency to dry out and crack. In order to fix your cars problem, you must first know how to troubleshoot in order to determine what exactly the problem is. The distributor cap is an important part in the secondary circuit of the ignition system and must be in perfect condition to have a properly tuned engine. If you suspect there may be something wrong with your cars distributor cap, try to see if you can repair it instead of replacing it. Lpe offers this lt1 to ls1 coil conversion computer to help eliminate some of the issues related to the optispark distributor. Distributors free delivery possible on eligible purchases.
How and why of cracked distributor caps second chance garage. Since 1995, they were vented via a vacuum hose connected to the distributor cap. Symptoms of a bad or failing distributor rotor and cap. Complete vented optispark replacement guide corvetteforum. Remember, changing the cap and rotor on this engine is no.
This will require some fabrication on mounting the stock ls1 coil brackets to the valve covers as well as getting the plug. Accel 86 cap and rotor for gm optispark ii distributors. If the distributor cap is cracked it will leak and if it gets damp out it may not allow your car to start. Where is the distributor cap on a chevrolet malibu answers. This distributor exceeds oem specification and comes 100% complete with everything needed including a new optispark wiring harness. What happens when you have a broken distributor cap. A bad distributor will normally present a variety of symptoms, which can oftentimes be recognizable as distributor related. How to tell if you have a faulty distributor carsdirect. Excessive wear and cracking means you need to replace the distributor cap with a new one. As spark plugs wear, their gap increases, requiring more voltage to bridge the gap.
Lt1 fans have been searching for a cap that could deliver the performance of the lt1 and msd is happy to bring it to them. Overstocked optispark distributors 1104032, 10457702. How to replace a distributor rotor and cap autoblog. Optispark distributor first picture shows 1995 and later distributor with vent tube. Finally a high quality cap and rotor for the front mount lt1 distributor. Cap style crab style computercontrolled compatible yes distributor cap color black distributor gear rotation standard housing finish natural housing material cast aluminum ignition box required no marine use no mechanical tach drive no notes this distributor replaces the optispark i nonvented, spline drive style oem distributor only. Then, we fill it with a reliable new pickup assembly, a trick timing adjustment mechanism and top it off with an all new msd distributor cap. If the distributor cap is faulty then the ignition sequence inside your engine will be out of order. How to diagnose a nospark or loss of power condition on a.
There is a shaft that connects the optispark to the cam gear. Oct 20, 2014 ok, theres still no way to really know if youre opti is bad without having a known good unit to swap in. Our lt1 optispark upgrade kit is perfect for those who want to upgrade to a vented optispark. The internal and external surface of the cap should be clean. This will be the fitting that connects to the distributor cap.
With a little knowledge and some elbow grease, you can repair certain problems with the distributor cap on your car. Apr 20, 2010 similar threads optispark tools forum date. Checking your distributor rotor and cap to see if they need to be replaced is one way to ensure that everything is in solid working order. Iron attracts moisture, which in turn oxidizes the tin creating rust inside the distributor. The oem optispark is equipped with an emi shield which is essentially a stamped sheet of tin placed between the optical trigger and rotor. The distributor cap should be inspected carefully to see how the sparks are arcing. This hose is connected to a vacuum port on the intake manifold.
Race proven quality our sponsored nasa cmc2 camaro built by lifesgoodracing completed an entire race season on a single aip optispark distributor, and won 1st place in the northern california camaromustang challenge 2 series driven by dave brown. Usually a faulty distributor rotor and cap will produce a few symptoms that alert the driver that service may be required. Take your time and let the gun melt the plastic sufficiently. Lt1 optispark conversionfeedback please impala forums.
Find great deals on ebay for optispark and optispark lt1. Diagnosing the cause of a failed optispark distributor youtube. This condition would often induce cross and misfire similar to a cracked distributor cap on a conventional ignition. Replace the weak link in your lt1 ignition with these accel performance replacement gm optispark ii distributors.
Comes complete with all new parts including the cap, rotor, mitsub. The second vacuum port on the cap connects to the intake ducting. Owners quickly realized the issues with their distributor and used a. A quick look a the inner workings of a new optispark distributer for my caprice. We can guess with voltages and cracked distributor covers and oil leaks but in the end. This distributor meets oem specifications and comes 100% complete with everything needed including a new optispark wiring harness. This is most likely the best aftermarket lt1lt4 distributor you will ever come across. Could this be bad optispark symptoms camaro forums at. While this homebrew solution was somewhat effective, these were bandaid fixes to usually highmileage parts.
The petris enterprises optispark kit includes all the pieces and attachments necessary to make the conversion, including manifold fittings, the vacuum hose assembly, and installation instructions. Check the distributer cap often the distributor cap is suspect. Contrary to what many people believe, most spark errors actually occur at low speeds, especially starting, not at high rpm. Dec 19, 2012 1995 firebird formula accel optispark distributor issues duration. Sep 21, 2016 a broken distributor cap moisture or condensation inside the distributor cap broken distributor rotor.
Summit racing lt1 optispark distributors sum850059 free. Vented optisparks use a venting system to remove moisture from the cap and body of the distributor, and also use a larger diameter drive system, which allows for better bearing stability and longer life. Replacing an optispark distributor, replacing water pump lt1 lt4, broken water pump bolt, bolts decide to break had to drill, and re thread hole, replaced water pump as it had to come off to. Another major symptom of a bad distributor cap is in case the car has the starting problem. Restore proper spark to your lt1 motor with this complete brand new oem optispark distributor assembly from ac delco. Overstock distributor inventory offer brand is manufacturer, asia keywords. If you have a vehicle made before 2005, it is likely that you have a distributor and thus, a distributor cap.
What happens when a distributor cap has a crack in it what. Im trying to tune the van up myself because i dont have the money to bring it to anyone. Remove the 3 bolts that hold the optispark in place. The distributor cap doesnt sound like such an important part, but it is integral to the performance of your cars engine. Distributor shaft oring and cap oring 22re performance. Buy aip electronics premium 2nd generation vented optispark electronic ignition distributor compatible replacement for 19941997 buick cadillac chevrolet pontiac 5. For sale is a new cap and rotor kit for gm optispark distributors. Subsequently, they have removed the lt1 distributor from their website. Remove both the distributor cap and rotor, then turn the ignition on but do not. Summit racing lt1 optispark distributors sum850060 free. In order to diagnose the precise cause of the distributor failure, follow the steps outlined below. Here are a few telltale signs that your distributor cap needs to be replaced. Ltcc coil pack conversion for 1996 lt1 camaro duration.
If that works but you have opti problems it is simply a worn distributor cap and rotor. Ignition distributor for optispark lt1 chevy camaro. Dynaspark the last distributor youll ever have to buy. Very often there is more than one part available per application as auto makers often switch midyear. If what i state or assume is wrong, please let me know and correct me. Oct 06, 2006 gms optispark is an optically triggered ignition distributor used on the lt1, lt4, and l99 4. Msd machines an entire billet block of aluminum down into a precise housing that fits in place of the factory piece. With years of experience and development, weve cracked the reliable optispark nut.
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