Opti is an Opti.. right?
Burning Brakes
Joined: May 1999
Posts: 999
Likes: 1
From: Gardner KS
Cruise-In II Veteran
Re: Opti is an Opti.. right? (Glock'94)
Ok, 92-94 used the same opti-crap right?
[Modified by Glock'94, 11:33 AM 8/15/2001]
[Modified by Glock'94, 11:33 AM 8/15/2001]
Race Director
Joined: Jun 2000
Posts: 13,128
Likes: 0
From: Oakland CA
St. Jude Donor '03
Re: Opti is an Opti.. right? (18carfan)
Hey Jeff,
I know this is getting off the subject a bit but you may be the one to know. I had a 1987 Cavalier Z24 when I was in high school. I remember it also had some kind of "distributorless" system but I don't remember the details. Would you happen to know what kind of system was on this car? It seemed to work great and never gave me any problems in all of the years I owned the car.
Thanks,
I know this is getting off the subject a bit but you may be the one to know. I had a 1987 Cavalier Z24 when I was in high school. I remember it also had some kind of "distributorless" system but I don't remember the details. Would you happen to know what kind of system was on this car? It seemed to work great and never gave me any problems in all of the years I owned the car.
Thanks,
Ok, 92-94 used the same opti-crap right?
[Modified by Glock'94, 11:33 AM 8/15/2001]
Yes, Curtis you are correct. Another interesting fact for you too - the "new-style" vented opti actually debuted on the '94 B- and D-bodies (Caprice, Roadmaster, Fleetwood, etc.) but didn't make it's way onto the F- and Y-bodies until 1995. -Jeff
[Modified by Glock'94, 11:33 AM 8/15/2001]
Yes, Curtis you are correct. Another interesting fact for you too - the "new-style" vented opti actually debuted on the '94 B- and D-bodies (Caprice, Roadmaster, Fleetwood, etc.) but didn't make it's way onto the F- and Y-bodies until 1995. -Jeff
Instructor
Joined: Apr 2001
Posts: 109
Likes: 0
From: Westminster, MD
Re: Opti is an Opti.. right? (94 LT1 Lou)
1987 Cavalier would have a delco DIS system. triggered by a magnetic crank sensor and powered by 3 delco dis coils. yes it is a hightly reliable system. Like everything else, the ignition module does go bad after a long while. and the coil goes bad even less. as long as plugs and wires are at their specs during the service life. it also has safety like automatic shutoff if oil pressure drops. bypassing the computer.
1987 would be the first year they put that in the 2.8MFI, 2.5FI, 2.2FI, 3.8MFI, 4.3MFI. Wonderful system. minimal maintance. The same system they are still using.... and they couldn't come up with anything better.
Too bad they didn't put that in the vette.
1987 would be the first year they put that in the 2.8MFI, 2.5FI, 2.2FI, 3.8MFI, 4.3MFI. Wonderful system. minimal maintance. The same system they are still using.... and they couldn't come up with anything better.
Too bad they didn't put that in the vette.
Burning Brakes
Joined: May 1999
Posts: 999
Likes: 1
From: Gardner KS
Cruise-In II Veteran
Re: Opti is an Opti.. right? (AlexS)
AlexS summed it up nicely. The newer systems even use more precise control and sensoring. The OBD2 cars can often detect which cylinder is misfiring or detonating utilizing sensors from the ignition system such as the crank and cam position sensor. Pretty amazing what cars actual do now. For example, many of the cars are programmed to back the timing down before an automatic trans gear upshift and raise it back up after the shift is complete in order to smooth out the shift. Unbelievable how far they've come! -Jeff
Burning Brakes
Joined: Nov 2000
Posts: 864
Likes: 0
From: Kelowna BC
Re: Opti is an Opti.. right? (Glock'94)
Ok, 92-94 used the same opti-crap right? Saw a post that made is sound like 92 was different than 94.
[Modified by Glock'94, 11:33 AM 8/15/2001]
[Modified by Glock'94, 11:33 AM 8/15/2001]
TSB Number: 92C11
Issue Date: FEB 92
TSB Title: Emission Campaign 92C11 Opti-Spark Distribtor
[Modified by 92BAV, 1:19 PM 8/15/2001]
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Race Director
Joined: Jun 2000
Posts: 13,128
Likes: 0
From: Oakland CA
St. Jude Donor '03
Re: Opti is an Opti.. right? (AlexS)
Why didn't this system ever get put on the Corvette?
:confused: :confused:
1987 Cavalier would have a delco DIS system. triggered by a magnetic crank sensor and powered by 3 delco dis coils. yes it is a hightly reliable system. Like everything else, the ignition module does go bad after a long while. and the coil goes bad even less. as long as plugs and wires are at their specs during the service life. it also has safety like automatic shutoff if oil pressure drops. bypassing the computer.
1987 would be the first year they put that in the 2.8MFI, 2.5FI, 2.2FI, 3.8MFI, 4.3MFI. Wonderful system. minimal maintance. The same system they are still using.... and they couldn't come up with anything better.
Too bad they didn't put that in the vette.
1987 would be the first year they put that in the 2.8MFI, 2.5FI, 2.2FI, 3.8MFI, 4.3MFI. Wonderful system. minimal maintance. The same system they are still using.... and they couldn't come up with anything better.
Too bad they didn't put that in the vette.
Melting Slicks
Joined: Apr 2000
Posts: 3,198
Likes: 2
From: Northern CA
Re: Opti is an Opti.. right? (94 LT1 Lou)
Why didn't this system ever get put on the Corvette?
My parents have had a few GM V6 sedans with the DIS system described above. Never a problem except for one day when I was driving and threw a belt, and somehow that cracked the ignition module.
