opti timing tips?
Thread Starter
TECH Veteran
iTrader: (53)
Joined: Feb 2004
Posts: 4,433
Likes: 0
From: Monticello, Kentucky
opti timing tips? When you guys are installing a new opti, do you have any timing tricks? I put the new one on the exact way the old one came off and no start. Of course it's out of time now. I tried the old procedure that's listed in the Chilton manual and after 6 attempts, no start. What do you guys do? I'm thinking about taking my opti back, surely one time it would have hit.
Thread Starter
TECH Veteran
iTrader: (53)
Joined: Feb 2004
Posts: 4,433
Likes: 0
From: Monticello, Kentucky
Well it says to put the pin/slot whatever you wanna call it at the 9:00 position with #1 cyl at TDC. Since I didn't wanna remove the valve cover due to the Delteq to check rocker position nor am I any good at "feeling the cyl" through the spark plug hole, I just put the pin at 9:00 and noted the crank key position. If that one didn't work, I moved the crank back around until my pin was at 9:00 but the crank key had moved so I knew I was on a different stroke. Wouldn't fire on either. I'm not sure that the opti is good. I am gonna put the old one back on today and get it to fire and then immediately try the new one. I may have a bad unit.
TECH Enthusiast
Joined: Jul 2003
Posts: 697
Likes: 0
From: Evansville, IN
Never put a 94+ opti on, but the 93 opti's are keyed. If you look at the opti drive shaft if actual is keyed. The opti has a slot and the shaft has a key, sam on the cam end. You can force it on wrong. When installing it, it should sit flush with the timing cover. You should not have to use the bolts to pull it flush.
TECH Enthusiast
Joined: May 2005
Posts: 669
Likes: 0
From: Charlotte, NC
if you didn't do anything to the timing chain or the inside of the opti itself there is no timing procedure. You simply install the opti with the dowl pin in the right location. There are 3 rectangular slots on the back. One of them has a different mark on it. Thats where the cam pin goes.
Originally Posted by dhdenney
I realize all this. The opti is seated properly.
Take it off, and check it. I swore up and down that i had it on properly once when it wouldnt start, and sure enough i some how put it on wrong. Now i always start it bfeore i fill it with coolant
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
Thread Starter
TECH Veteran
iTrader: (53)
Joined: Feb 2004
Posts: 4,433
Likes: 0
From: Monticello, Kentucky
Well you were right. The problem was elsewhere. My MSD DIS-4 has gone bad or something. I don't understand it. It ran with it fine before the new opti. Not sure what happened. I didn't figure it was the culprit because it had worked just the day before. So I pulled the interface modules out from under my coils and hit the first lick. I was looking in the wrong place for the problem all along. Oh yeah, I always start the thing before I reinstall anything. First time I did the opti, I reinstalled everything and well, had to do it again.