How to index an optispark?
Thread Starter
Race Director
Joined: Jan 2000
Posts: 16,489
Likes: 25
From: USA. Northern Virginia
How to index an optispark?
OK...I have my brandy new optispark to fit my "94" Vette from Chris 
Just how are you supposed to index this thing to get it in the right firing order?....I don't see any special grove or tang on the shaft
TIA-Larry
Just how are you supposed to index this thing to get it in the right firing order?....I don't see any special grove or tang on the shaft
TIA-Larry
Racer
Joined: Apr 2002
Posts: 342
Likes: 0
From: new orleans La
Originally Posted by Alvin
just make sure you don't force it as people have done it in the past and ended up all screwed up..
yep...make sure the flange on the opti mounts flat against the three mounting bolt holes. If there is any resistance then it's not properly engaged/aligned with the cam pin.
Melting Slicks
Joined: May 2005
Posts: 2,730
Likes: 1
From: Atoka Oklahoma
St. Jude Donor 06
check out "my corvette pictures" for a visual. mine only went on one way and it went on real easy. took alittle while to get it clocked. it only goes on oneway. don't force it what ever you do. if it dont then turn the inards alittle and try it again.
oops my pics won't help any
oops my pics won't help any
Pro
Joined: Jan 2004
Posts: 707
Likes: 0
From: Syracuse Utah
Are you talking about a 94 opti or a conversion to make the 95 opti work? One uses the dowel pin and the other uses a splined shaft with a very small fill in one spline so it will only go on (correctly) one way.
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Thread Starter
Race Director
Joined: Jan 2000
Posts: 16,489
Likes: 25
From: USA. Northern Virginia
Originally Posted by BillWelter
If it's a '94 opti going in a '94 car, then the little splined shaft only goes in one way, there's one tooth missing on the shaft
Thats what I was looking for
Drifting
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Originally Posted by BillWelter
If it's a '94 opti going in a '94 car, then the little splined shaft only goes in one way, there's one tooth missing on the shaft
It should go on only one way but people have forced it on the wrong way in the past. Thats what we where saying.
