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

Do you need an OptiSpark?

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Old Nov 17, 2016 | 07:36 PM
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I'll post a pic of the wetness. Hold up
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Old Nov 17, 2016 | 07:39 PM
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Originally Posted by 1993C4LT1
I'll post a pic of the wetness. Hold up
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Old Nov 18, 2016 | 12:33 AM
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Hi 1993C4LT1,

I believe that is the assemble lube that they put on the seal and bearing.
I don't think it is anything to worry about. You could pull the cap and see how it looks inside.

Thank you for your business and if you have anymore concerns let me know.

Christian
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Old Nov 18, 2016 | 06:35 AM
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Awesome! Alright, I'll pull the cap.
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Old Nov 18, 2016 | 11:43 AM
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Originally Posted by 1993C4LT1
Awesome! Alright, I'll pull the cap.
While your in there, some like the add a little loctite to the two screws that hold the rotor on for added insurance. Not sure if its necessary but that is what I have read.

Christian
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Old Nov 18, 2016 | 06:22 PM
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Originally Posted by SacCityCorvette
Hi 1993C4LT1,

I believe that is the assemble lube that they put on the seal and bearing.
I don't think it is anything to worry about. You could pull the cap and see how it looks inside.

Thank you for your business and if you have anymore concerns let me know.

Christian


I would install it and not think twice about it. I have to 'say'...in my opoinion... it is not water....becasue....if it were water...there would be no witness marks of where it was 'wet'....and it would have dried up.

DUB
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Old Nov 20, 2016 | 01:30 PM
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I was about to install the opti. but I noticed the bearing comes out very easily. on the opti I pulled out, it doesn't do that. Is that normal?
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Old Nov 20, 2016 | 05:29 PM
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Originally Posted by 1993C4LT1
I was about to install the opti. but I noticed the bearing comes out very easily. on the opti I pulled out, it doesn't do that. Is that normal?
I have never had that bearing come out and I have replaced numerous Opti-Spark distributors. The bearing should not come out where your splined shaft slides into it and indexes to the portion of the Opti-spark inside.

DUB
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Old Nov 20, 2016 | 08:30 PM
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There we go, splined shaft. That is what I am talking about. I've only done two opti's, before this one. Never had this happen either. Thanks Dub I'll be returning it.
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Old Nov 20, 2016 | 10:33 PM
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Hi,
Is the the part you are talking about? It is normal to be able to
pull it out.

Thanks
Christian
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Old Nov 21, 2016 | 09:47 AM
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That's weird, but since Steven is running the AIP opti, I'll put it in. I wonder why they made it this way?

Last edited by 1993C4LT1; Nov 21, 2016 at 09:47 AM.
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Old Nov 21, 2016 | 11:02 AM
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Originally Posted by 1993C4LT1
That's weird, but since Steven is running the AIP opti, I'll put it in. I wonder why they made it this way?
Brandon,

I have responded to your PM--Here it is-Mine was black too. But I did use the MSD Cap/Rotor (which is fully vented). I have read your post. The bearing you mention-Is it the splined piece that goes into the cam/opti. If yes this is removable. So far my opti from them is okay. I would not be concerned with the oil.

Good luck.
Steve
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Old Nov 21, 2016 | 03:39 PM
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Thanks
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Old Nov 21, 2016 | 07:05 PM
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Originally Posted by 1993C4LT1
There we go, splined shaft. That is what I am talking about. I've only done two opti's, before this one. Never had this happen either. Thanks Dub I'll be returning it.
AS shown in an above post...the splined shaft is made to come out.
And hopefully you are aware that this splined shaft can only go in ONE WAY ONLY when you go and index it on the engine.

DO NOT----REPEAT------DO NOT force the Opti-spark on the engine or use its mounting bolts to pull it flush to the block area.

And not meaning to step on your toes...but when I do this type with the splined shaft. I remove the splined shaft form the Opti-spark and get it to slide into the engine area. Then... I pay very careful attention to where the indexing notch is in the splinded shaft. So I know where I need to rotate the splined shaft when I put it back into the Opti-spark. That way....I can slide it into place and the Opti-spark will seat against the block with very little to no effort.

If the Opti-spark does not seat flush BY HAND...you are not right and try it again.

The reason I am writing this is because I had a customer who did his own Opti-spark swap. And the car did not run right afterwards....he brought it to me to figure out and I found that he was off one tooth on the splined shaft because he forced it....even though he said he didn't...the facts proved otherwise.

DUB
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Old Nov 21, 2016 | 08:52 PM
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Originally Posted by DUB
AS shown in an above post...the splined shaft is made to come out.
And hopefully you are aware that this splined shaft can only go in ONE WAY ONLY when you go and index it on the engine.

DO NOT----REPEAT------DO NOT force the Opti-spark on the engine or use its mounting bolts to pull it flush to the block area.

And not meaning to step on your toes...but when I do this type with the splined shaft. I remove the splined shaft form the Opti-spark and get it to slide into the engine area. Then... I pay very careful attention to where the indexing notch is in the splinded shaft. So I know where I need to rotate the splined shaft when I put it back into the Opti-spark. That way....I can slide it into place and the Opti-spark will seat against the block with very little to no effort.

If the Opti-spark does not seat flush BY HAND...you are not right and try it again.

The reason I am writing this is because I had a customer who did his own Opti-spark swap. And the car did not run right afterwards....he brought it to me to figure out and I found that he was off one tooth on the splined shaft because he forced it....even though he said he didn't...the facts proved otherwise.

DUB
Good advise here.

Steve
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Old Nov 21, 2016 | 09:54 PM
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What I've done on the previous opti jobs, I just positioned the tooth same way the bad opti came out. But still, thanks for the heads up
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Old Nov 22, 2016 | 06:25 PM
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Originally Posted by 1993C4LT1
What I've done on the previous opti jobs, I just positioned the tooth same way the bad opti came out. But still, thanks for the heads up


At least you know about the notch to special tooth. Many people do not and do not realize that the splined shaft MUST be installed in a specific position so the engine can be in correct time.

DUB
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Old Jan 14, 2017 | 12:21 AM
  #38  
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Originally Posted by SacCityCorvette
We carry AIP Optisparks with a 2 year warranty
Please check our website:
http://www.saccitycorvette.com/LT1-SBC.html
I have one in my 95 very happy. car has never ran better
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Old Jan 14, 2017 | 12:23 AM
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Originally Posted by illenema
I have one in my 95 very happy. car has never ran better
Do you have a code h16? I just got my car back on the roads with this opti, and after deleting code h16, it came back. Car seems to run fine though.
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Old Jan 14, 2017 | 12:26 AM
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Originally Posted by 1993C4LT1
Do you have a code h16? I just got my car back on the roads with this opti, and after deleting code h16, it came back. Car seems to run fine though.
No codes I did a shortblock swap and snapped off the coil wire nipple on the gm, was skeptical with this unit but car runs better then with the old gm one...
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