'94 Vette Through Some Codes (HELP!!!)
Le Mans Master
Joined: Mar 2010
Posts: 8,172
Likes: 17
From: Eugene Oregon
I believe in the Beer Fairy
St. Jude Donor '15,'19
just got this one for my job its a AC Delco, didn't want to chance it, you may want to think about getting some of these seals to while your in there. here is what my old opti looked like once i took it apart,
it was cause by a bad water pump shaft bearing. good luck with your project.
Instructor
Joined: Feb 2011
Posts: 244
Likes: 6
From: harrison twp mi
the little orings look like the ones on the optishaft,took alot of wiggling to get the wires off,what do you mean by (blocked the crank pulley).
mike
Instructor
Joined: Nov 2009
Posts: 164
Likes: 2
From: Spring Texas
Replacement Opti
Go to Chandler Motor Sports and buy the Opti with Lifetime warranty for $134.99. Call at 877-727-8742 or order thru EBay, but talk to Nic Chandler and read the history of his developement of this Opti replacement.
Instructor
Joined: Feb 2011
Posts: 244
Likes: 6
From: harrison twp mi
basically put a long breaker bar on one and kinda shock the bolt(smack the breaker hard and fast),should break them loose,the hardest part was getting the balancer off the hub,ended up using the air hammer from underneath ,and kept alternating locations.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
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
Le Mans Master
Joined: Mar 2010
Posts: 8,172
Likes: 17
From: Eugene Oregon
I believe in the Beer Fairy
St. Jude Donor '15,'19
thats the same way i took the bolts out, but i used a wooden dowel for getting the balancer off, came from underneath and behind it and just hit it a couple times each side towards the center then rotated it and hit again, did this a few times and it came right off. the small o rings are for the water pump drive shaft coupler and the red one is for the for the water pump drive shaft timing cover, and the black one is for the opti drive shaft. its a good idea to replace them while your in there.
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
UPDATE: I finished the opti/water pump install. The vette is running flawlessly now. Thanks Chandler Motorsports for a quality piece at an affordable price and thank you O' Rilley's for a quality water pump!
Le Mans Master
Joined: Mar 2010
Posts: 8,172
Likes: 17
From: Eugene Oregon
I believe in the Beer Fairy
St. Jude Donor '15,'19
congrats on finishing 
I'm still waiting on the gm water pump to come in, by the way how much coolant did it take to fill it back up? and did you remove the knock sensors when you drained the coolant?
I'm still waiting on the gm water pump to come in, by the way how much coolant did it take to fill it back up? and did you remove the knock sensors when you drained the coolant?
Thread Starter
Burning Brakes
Joined: Nov 2009
Posts: 813
Likes: 0
From: Fort Worth TX
I didn't take the sensor out. And for some reason, my car didn't want to take much more than a gallon.5, which scared me a bit. I added some through the overflow, so roughly 2gal