Optispark vs Crank Trigger
Thread Starter
Instructor
Joined: Dec 2000
Posts: 206
Likes: 0
From: Mt Juliet TN
Optispark vs Crank Trigger
I have a 93 LT1 with an Optispark distributor. The car is used exclusively for the track days. I have an electric water pump to install and I would like to replace the timing chain with a gear drive system. I just need to either find a way to drive the Optispark from the gear drive system or replace the Optispark with a crank trigger.
Has anyone replaced their Optispark with a crank trigger system?
What did you have to do to the computer?
Any other problems?
Has anyone replaced their Optispark with a crank trigger system?
What did you have to do to the computer?
Any other problems?
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Optispark vs Crank Trigger (Corvette55)
Although I haven't done this (I hate it when I see posts that start like that!). I have heard of replacing the timing chain with gears and no mention of a problem with the opti. I think the opti is driven off the end of the cam, not the cam gear. Call the vendor.
Thread Starter
Instructor
Joined: Dec 2000
Posts: 206
Likes: 0
From: Mt Juliet TN
Re: Optispark vs Crank Trigger (John Row)
The Optispark in the 94 and up are cam driven. My 93 is driven from a splined shaft that goes into the cam sprocket. I have thought about upgrading to the 94+ opti, but for about the same $$$ I can buy a crank trigger kit.
Safety Car
Joined: Jun 1999
Posts: 3,641
Likes: 2
From: Southern California
Re: Optispark vs Crank Trigger (Corvette55)
They say the opti spark sends signals to the computer to fire the injectors. But '92-'93 cars don't have sequential fuel injection. We have a batch fire system. So I think that arguement doesn't apply to us.:cool:. See if it works:yesnod:.
Team Owner
Joined: Nov 1999
Posts: 32,782
Likes: 11
From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: Optispark vs Crank Trigger (Corvette55)
Crank trigger is the way to go.
Burning Brakes
Joined: May 2002
Posts: 831
Likes: 0
From: Iowa City IA
Re: Optispark vs Crank Trigger (mackeyred96)
i say go with the crank trigger...the only problem is, you need a distributor to run a crank trigger, which means drilling a hole through the intake to mount a distributor.
