1980 C3 timing
Thread Starter
Heel & Toe
Joined: Dec 2017
Posts: 22
Likes: 0
1980 C3 timing
So ive read Lars paper about timing for peak performance and I have a question. What is The purpose of removing the springs in the first step? Can’t I just start out with, say the blue springs from the mr gasket kit and go from there? Also would running it with no springs potentially cause damage? I’m just trying to wrap my head around his method, and it’s taken me many reads of it for it to really sink in but I still wonder about the first part.
Burning Brakes
Joined: Sep 2016
Posts: 920
Likes: 413
From: Dutchess county New York
So ive read Lars paper about timing for peak performance and I have a question. What is The purpose of removing the springs in the first step? Can’t I just start out with, say the blue springs from the mr gasket kit and go from there? Also would running it with no springs potentially cause damage? I’m just trying to wrap my head around his method, and it’s taken me many reads of it for it to really sink in but I still wonder about the first part.
With one or zero springs it'll all come in quick not a whole lot above idle. I ran up to about 3000 rpm with the springs connected and mapped the advance every 200 rpm or so.
Thread Starter
Heel & Toe
Joined: Dec 2017
Posts: 22
Likes: 0
Me too. Been fiddling with my new INNOVA 5568 - great one handed operation. Removing the spring(s) is just to show you how much advance you get from the weighted arms. The springs control the rate at which the advance comes in.
With one or zero springs it'll all come in quick not a whole lot above idle. I ran up to about 3000 rpm with the springs connected and mapped the advance every 200 rpm or so.
With one or zero springs it'll all come in quick not a whole lot above idle. I ran up to about 3000 rpm with the springs connected and mapped the advance every 200 rpm or so.
Tech Contributor
Joined: Aug 1999
Posts: 14,356
Likes: 6,332
From: At my Bar drinking and wrenching in Lafayette Colorado
So ive read Lars paper about timing for peak performance and I have a question. What is The purpose of removing the springs in the first step? Can’t I just start out with, say the blue springs from the mr gasket kit and go from there? Also would running it with no springs potentially cause damage? I’m just trying to wrap my head around his method, and it’s taken me many reads of it for it to really sink in but I still wonder about the first part.
Lars
Tuned by Lars Corvettes & Musclecars
Denver
V8FastCars@msn.com
Tech Contributor
Joined: Aug 1999
Posts: 14,356
Likes: 6,332
From: At my Bar drinking and wrenching in Lafayette Colorado
Glad you found the info useful. But again, make sure you only use articles you have obtained directly from me via e-mail - do not use any of "my" articles you find posted on various web sites - it's a real shame, but there's a bunch of bad info and altered info out there with my name on it.
Lars
Lars
Last edited by lars; Jun 12, 2018 at 04:36 PM.
Burning Brakes
Joined: Sep 2016
Posts: 920
Likes: 413
From: Dutchess county New York
understood
Got it. Get it. Believe I am pretty much dialed in but talk is cheap, specially online talk. I am careful enough to consider online info and different versions, etc. Large grain of salt always available. Technical non-mechanic. Specs. Understood. Probably difficult to believe I actually get it. Think I do. Not a Saturn V hissing on the pad.
I may bother you at some point because have a 1111493 that is 180* out and may need a rebuild.. I now know exactly what that means. Winter project. Running too good right now and my wife could care less about the details. Again, winter project. Let's just cruise.....
I found an old non-tach drive distributor to dissect in the mean time. Very enlightening. Very interesting. Love getting my head around the technology. Cool.
Surprisingly (or maybe not) Lars, there are those who benefit from your explanations and I can't think of any better flattery than accepting what you have said and then actually testing it live. I did. So far so good and thanks for the good stuff.
Jeff
I may bother you at some point because have a 1111493 that is 180* out and may need a rebuild.. I now know exactly what that means. Winter project. Running too good right now and my wife could care less about the details. Again, winter project. Let's just cruise.....
I found an old non-tach drive distributor to dissect in the mean time. Very enlightening. Very interesting. Love getting my head around the technology. Cool.
Surprisingly (or maybe not) Lars, there are those who benefit from your explanations and I can't think of any better flattery than accepting what you have said and then actually testing it live. I did. So far so good and thanks for the good stuff.
Jeff
Last edited by pigfarmer; Jun 12, 2018 at 07:05 PM.
Thread Starter
Heel & Toe
Joined: Dec 2017
Posts: 22
Likes: 0
Sounds like you're reading a paper that you have found on the Internet. Do not use any of my papers your find posted on the Internet - they are either obsolete or altered, and do not contain correct info. I do not advocate removing the springs on an HEI system for setting total timing - if you do, you will get an erroneous total timing setting. Please e-mail me directly for correct copies of my papers.
Lars
Tuned by Lars Corvettes & Musclecars
Denver
V8FastCars@msn.com
Lars
Tuned by Lars Corvettes & Musclecars
Denver
V8FastCars@msn.com
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its 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