higgyburners

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.

94lt1vette94

Which seals are those? Also, can someone tell me how they blocked the crank pulley and got the 4 driver's side plug wires off of the opti?

mmracecars

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

JM95

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.

94lt1vette94

I bought a Chandler opti lol, check a page back. And by block the crank pulley, I mean how did you take the bolts off without it rotating?

mmracecars

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.

94lt1vette94

So it's ok if the crank spins?

mmracecars

yep,you'll probably have to rotate it to accsess all three bolts anyway

higgyburners

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.

94lt1vette94

Getting that crank pulley off was a PITA...I destroyed the old opti trying to pry that sucker off haha

94lt1vette94

Quick question: how much coolant does a '94 LT1 hold? I bought 1 huge jug, but I'm wondering if I need a second one...

94lt1vette94

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!

higgyburners

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?

94lt1vette94

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