optispark drive mechanism

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Jul 13, 2010 | 06:00 PM

choopes

Thread Starter

Racer

Joined: Mar 2002

Posts: 312

Likes: 6

From: Troy Al

optispark drive mechanism

I noticed the keyed spline that drives the opti actually came out in my hand. It's about 2" long and connects to another spline up in the engine. This is the device that actually drives the opti. I'm curious about what's behind the cover, but not curious enough to remove it, if I don't have too. Can it be installed wrong? Is there another bearing or bushing in there that needs to be changed? Is there any way this could be the cause of the past 3 failures of optis?
Thanks!

Jul 13, 2010 | 06:02 PM

tblt44

Drifting

Joined: Aug 2009

Posts: 1,615

Likes: 3

From: Tampa Fl

Jul 13, 2010 | 07:36 PM

timmy 93

Instructor

Joined: May 2006

Posts: 174

Likes: 1

From: saginaw michigan

Yes it drives the opti.Your cam shaft is what the spline goes into.It only fits one way.The 92-93 are different than 95-96 not sure which one 94 is.

Jul 13, 2010 | 09:40 PM

choopes

Thread Starter

Racer

Joined: Mar 2002

Posts: 312

Likes: 6

From: Troy Al

I noticed a little play up and down back and forth. As a drive mechanism, it's tight. Are these changed with the opti? The only bearing then would be that on the front of the cam shaft. After 3 optis, call me a gambler. I'd like to try to get it right this time. My plan is a new Delco first gen. opti from Summit, modified with a MSD cap, rotor, and vacume and air inlet, and a new coil. If it don't last, hello Delteq!

Jul 13, 2010 | 10:15 PM

BrianCunningham

Team Owner

Joined: Mar 2001

Posts: 30,856

Likes: 293

From: Boston, Dallas, Detroit, SoCal, back to Boston MA

good read on LT1's

http://www.enginebuildermag.com/Arti...t1_engine.aspx

http://www.corvettefever.com/howto/16758/index.html

Jul 13, 2010 | 11:49 PM

92WhiteVetteGuy

Instructor

Joined: Dec 2006

Posts: 137

Likes: 0

Hi
Did you ever diagnose the cause of the 3 failures to your OptiSpark distributor?
92White VetteGuy

Jul 14, 2010 | 09:16 AM

choopes

Thread Starter

Racer

Joined: Mar 2002

Posts: 312

Likes: 6

From: Troy Al

Code 36, The last time this happened I was in complete denial. Couldn't believe the opti could be bad. I had just changed it. It's off the car now. Waiting for money to buy a new one.

Jul 14, 2010 | 11:11 AM

timmy 93

Instructor

Joined: May 2006

Posts: 174

Likes: 1

From: saginaw michigan

Quote:

Originally Posted by choopes

Code 36, The last time this happened I was in complete denial. Couldn't believe the opti could be bad. I had just changed it. It's off the car now. Waiting for money to buy a new one.

What kind are you buying.Is there no product support.

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Jul 14, 2010 | 11:26 AM

choopes

Thread Starter

Racer

Joined: Mar 2002

Posts: 312

Likes: 6

From: Troy Al

My plan is a new AC/Delco first gen. opti from Summit, modified with a MSD cap, rotor, and vacume and air inlet, and a new MSD blaster coil. If it don't last, hello Delteq!