timing
Thread Starter
Pro
Joined: Oct 2005
Posts: 581
Likes: 0
From: Boynton Beach Florida
timing
I have an 81 with a non computer controled HEI distributer,,My problem the timing keeps changing toward the retard side..its tightened and doesn't move yet the timing was 12 degrees after tdc when I checked it..It was set at 12 btdc.
Le Mans Master
Joined: Jan 2006
Posts: 8,319
Likes: 7
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
If the balancer isnt walking then it sounds like a streched worn timing chain.
went through this my self multiple times over the years. when the chain becomes worn (i.e the links wearing or the chain itself elongating) it can skip, or due to the ewera just simply walk the timing out. eventually it will fail, and potentially rasther nastily.
Check out the distributor for wear first, but if its OK, thats where your problem is
Tim
went through this my self multiple times over the years. when the chain becomes worn (i.e the links wearing or the chain itself elongating) it can skip, or due to the ewera just simply walk the timing out. eventually it will fail, and potentially rasther nastily.
Check out the distributor for wear first, but if its OK, thats where your problem is
Tim
Thread Starter
Pro
Joined: Oct 2005
Posts: 581
Likes: 0
From: Boynton Beach Florida
I just tried to time it again, when I set it at 12degrees bdtc it sounds like its to far advanced and the starter drags,,I think I will start from the begining ..find top dead center and work from there..
Instructor
Joined: Jan 2006
Posts: 223
Likes: 14
From: South Florida
Originally Posted by palazzopl
I just tried to time it again, when I set it at 12degrees bdtc it sounds like its to far advanced and the starter drags,,I think I will start from the begining ..find top dead center and work from there..
Thread Starter
Pro
Joined: Oct 2005
Posts: 581
Likes: 0
From: Boynton Beach Florida
did the hole timing thing ,found tdc by removeng #1 spark plug and getting the piston to the top..found the mark on the balancer almost 90 degrees off. retimed using the new mark and it ran great..Going to check one more thing tomorrow.. going to remove the valve cover and check to see if the valves are fully closed at TDC
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Burning Brakes
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
Originally Posted by palazzopl
I just tried to time it again, when I set it at 12degrees bdtc it sounds like its to far advanced and the starter drags,,I think I will start from the begining ..find top dead center and work from there..
