C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Bad Optis from the start? a Common problem?

Thread Tools
 
Search this Thread
 
Old Aug 25, 2003 | 03:54 PM
  #1  
sothpaw2's Avatar
sothpaw2
Thread Starter
Safety Car
15 Year Member
 
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Default Bad Optis from the start? a Common problem?

I just had a new vented Opti blow on me, after just 1 month and 1500 miles.
There's no coolant or oil or anything which invaded the unit.
The circuit tested fine unless the engine was warm--it went bad at 190F oil temp and not before.

?Is this a common experience here? The parts supplier says it is common. Is GM's quality on this part really this poor? Has their supplier maybe started to get sloppy?


[Modified by sothpaw2, 8:55 PM 8/25/2003]
Reply
Old Aug 25, 2003 | 05:19 PM
  #2  
Lone Ranger's Avatar
Lone Ranger
Le Mans Master
10 Year Member
 
Joined: Feb 2002
Posts: 7,858
Likes: 2
Default Re: Bad Optis from the start? a Common problem? (sothpaw2)

Instead of a replacement unit tell them to give you what they charged you for the unit in cash, then go buy a DynaSpark instead.
Reply
Old Aug 25, 2003 | 05:31 PM
  #3  
Goody's Avatar
Goody
Le Mans Master
20 Year Member
 
Joined: Oct 2000
Posts: 6,362
Likes: 30
From: Oak Harbor WA
Default Re: Bad Optis from the start? a Common problem? (sothpaw2)

Not sure as I have never bought a new one from GM. I have the high end miss under heavy loads now, but bidding my time until I take the engine down for cam/head swap and coversion to '95 timing system.

I bought a unit from Kragen and it had the same internals as my original unit?? Not sure since I am not original owner. Both had Mitsubishi electronics inside.

At least yours should be warranteed still....or isn't it?
Reply
Old Aug 25, 2003 | 06:35 PM
  #4  
sothpaw2's Avatar
sothpaw2
Thread Starter
Safety Car
15 Year Member
 
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Default Re: Bad Optis from the start? a Common problem? (Goody)

Yes--they will exchange--no questions.

Dynaspark--has the same electronics it seems to me. Not immediately available as far as I can tell. I need this now. Car has been in shop or garage (winter) more than on the road this year. All summer, it has been in the shop, except July. I actually got to drive it in July and some in March/April.
Reply
Old Aug 25, 2003 | 07:21 PM
  #5  
SPD DMN's Avatar
SPD DMN
Le Mans Master
20 Year Member
 
Joined: Oct 1999
Posts: 9,713
Likes: 3
From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Default Re: Bad Optis from the start? a Common problem? (sothpaw2)

I had my last one fail wih under 1000 miles and less than 3 months. Got the new one in now so we will see how long it lasts. My prior one lasted only about 8 months but that was partially my fault. All of them have been replaced for what it costs for shipping so the only thing I am out is the time and RTV it takes to change them.

So yes, I think their quality control has gone down the toilet on these units.
Reply
Old Aug 25, 2003 | 07:25 PM
  #6  
Mr Mojo's Avatar
Mr Mojo
Elite Torch Red Member
Supporting Lifetime Gold
25 Year Member
 
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Default Re: Bad Optis from the start? a Common problem? (sothpaw2)

Got a brand new one for my '95 about 3 years and 45,000 miles ago, not one single problem yet.

My '93 still has the original (non-vented) one it it with less than 40,000 miles, it went bad due to the lack of driving it a lot. But with teh LTCC Coil Conversion kit in there, I'll never have another opti problem ever again.
Reply
Old Aug 26, 2003 | 06:46 AM
  #7  
sothpaw2's Avatar
sothpaw2
Thread Starter
Safety Car
15 Year Member
 
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Default Re: Bad Optis from the start? a Common problem? (Mr Mojo)

ttt
Reply
Old Aug 26, 2003 | 03:38 PM
  #8  
sothpaw2's Avatar
sothpaw2
Thread Starter
Safety Car
15 Year Member
 
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Default Re: Bad Optis from the start? a Common problem? (sothpaw2)

ttt
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Aug 26, 2003 | 04:23 PM
  #9  
John Row's Avatar
John Row
Melting Slicks
20 Year Member
Liked
Loved
 
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Default Re: Bad Optis from the start? a Common problem? (sothpaw2)

I had a vented opti go bad with about 5K miles. I didn't have it vented properly (i.e. not enough air flow). The high voltage side became very oxidized.
Reply

Get notified of new replies

To Bad Optis from the start? a Common problem?





All times are GMT -4. The time now is 01:30 PM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE