How to replace the Optispark on a corvette?

Complete Vented Optispark Replacement Guide – CorvetteForum http://www.the-reeds.com/optispark_conversion.htm The Optispark is the distributor that was installed on all late model LT1’s and LT4’s. This distributor http://www.the-reeds.com/optispark_conversion.htm The Optispark is the distributor that was installed on all late model LT1’s and LT4’s.

How long does it take to install Opti Spark on LT1?

Spark plug wires on the LT1 are a major effort. It usually takes around four hours. I would install the new Opti-Spark and when you’re sure the engine runs properly get started on the spark plugs and the spark plug wires.

What is the Opti Spark distributor on a corvette?

This new Opti-Spark distributor was supposed to be the greatest thing since GM did away with ignition points. Instead there was an internal mistake and the Opti-Spark caused Corvette owners a tremendous amount of aggravation. One of the goals was to control spark scatter during transient maneuvers, such as acceleration.

Where is the Opti located on a LT1 engine?

The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. The “opti” has two parts, a low-voltage optical section and a high-voltage cap and rotor section. Where is it? The opti is mounted on the front of the LT1, above the crank snout and behind the water pump.

How does the LT1 Opti Spark distributor reduce rotor wear?

This reduced cap and rotor wear by reducing the ozone formed when the spark is jumping large rotor-to-cap gaps. For all of its innovations, one major problem occurred in the transition to actual production.

Which is the best Opti Spark to buy?

Bite the bullet and buy a GM complete opti-spark. I did replace the whole thing last time. it is was an accel and a piece of crap. Been running an MSD 6A for 10 years. No problems. Stock opti. WOW that’s good.

What should I remove from my vented Optispark?

Only the disc directly behind the rotor should be removed. Remove the middle spacer. This is the center portion of the Optispark body. everything, but the back plate. BE careful when handling this.

How to change the base of the Optispark?

2. Change the Optispark out with a modified unit. simple! buy), and simply change the cap! Of course you will need to do a few additional things. (yuk!). Inverse Torx Bit – E4, deep well!! the base of the Optispark. I got mine from the local parts house that

How are spark pulses timed in an opti?

Spark pulses are timed through the cap/rotor side and injector pulses are also timed from this. When its working right, the opti is an extremely accurate timing mechanism. GMHTP’s Opti article is an excellent in-depth treatment of how the opti works.

What should I do if my Optispark says no start?

Before condemning the Optispark for a no-start condition there are a few things that should always be checked. Make sure you have fuel pressure and the injectors are not shorted on 1992-1993 GM vehicles. You should be able to hear the fuel pump run for a few seconds after the ignition switch is turned to the run position.

Where is the Optispark located on a LT1 engine?

What is it? The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. The “opti” has two parts, a low-voltage optical section and a high-voltage cap and rotor section. Where is it? The opti is mounted on the front of the LT1, above the crank snout and behind the water pump.

Is there an Opti Spark distributor for a corvette?

Our inventory selection includes Opti-Spark distributor assemblies and Opti-Spark distributor cap and rotor kits, as well as ignition coils and ignition modules to meet your Corvette needs. In addition, Zip stands behind all of our Corvette parts with our “No-Hassle Guarantee” – That\’s customer service the Zip way!

Can You bolt a 1995 Optispark to a 1994 LT1?

You CANNOT bolt a 1995+ Optispark up to a 1992-1994 LT1. The CAM is different. You could change the CAM, timing cover, CAM gear, etc but this gets expensive, and is very labor intensive. the solution? 1. Change the Optispark out and be up and running again.

When did Optispark come out on a Camaro?

Optispark is the distributor that was installed on all late model LT1’s. and LT4’s. This distributor was installed on : 1992 – 1996. LT1/LT4 Corvettes (Y-Body) 1993 – 1997 LT1/LT4 Camaro’s, Trans Ams. (F-Body)

When did the Corvette LT4 cylinder head come out?

In 1996, an LT4 was available in the Corvette. The LT4 had the same features as the LT1, but had larger valves, larger intake ports that were located higher, and an intake to match. The LT4 also came with a more aggressive cam to enhance the better heads.

What’s the difference between a Corvette LT1 and LT4?

Also, the water pump is cam-driven, rather than belt driven. In 1996, an LT4 was available in the Corvette. The LT4 had the same features as the LT1, but had larger valves, larger intake ports that were located higher, and an intake to match. The LT4 also came with a more aggressive cam to enhance the better heads.

What was the idea of the Optispark distributor?

This distributor was installed on : The concept of the Optispark was a great idea. It allowed for very accurate control of the spark to each plug. The cap was the LED/disc setup. There were 2 LED’s that controlled the spark and timing of the engine.

Is it good policy to replace Optispark distributor harness?

Mid 90’s wiring harnesses tended toward the flimsy and after 2 decades they can get a bit crispy. It’s always good policy to check the wiring before going to all the trouble and expense of replacing an Optispark only to find out a $20 Distributor harness would have fixed the problem.

Why are there gaps in my Optispark distributor cap?

There’s usually some degree of warpage on most Optispark distributor caps which allows gaps in the seal between cap and distributor. That makes it even easier for infiltration of water and oil. Then there’s the issue of varying quality of replacements.

Is the LT1 optisparks sold on eBay?

Most other aftermarket LT1 distributors being sold on eBay are not revised in any way and are not OEM specification. They are being made overseas with sub-par production quality standards and being sold here on eBay for ridiculously low prices.

How to replace the Optispark on a corvette?