C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

not the normal timing question

Thread Tools
 
Search this Thread
 
Old Mar 29, 2006 | 10:07 PM
  #1  
jlaw68's Avatar
jlaw68
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2005
Posts: 494
Likes: 2
From: rockwall tx
Default not the normal timing question

dropped my destributor back in but i think its a tooth off. which way to turn it to advance the timing? clockwise or counter clockwise?
Reply
Old Mar 29, 2006 | 10:12 PM
  #2  
big_G's Avatar
big_G
Le Mans Master
15 Year Member
 
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Default

Counter clock-wise
Reply
Old Mar 29, 2006 | 10:13 PM
  #3  
S489's Avatar
S489
Burning Brakes
 
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
Default

clockwise advances timing; check how mechanical advance works to confirm (i assume you are talkiing about the rotor)(i assume big_G is talking about the housing or cap)

Last edited by S489; Mar 29, 2006 at 10:18 PM.
Reply
Old Mar 29, 2006 | 10:15 PM
  #4  
S489's Avatar
S489
Burning Brakes
 
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
Default

i've been known to be subject to the 50/50/90 rule
Reply
Old Mar 29, 2006 | 10:21 PM
  #5  
jlaw68's Avatar
jlaw68
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2005
Posts: 494
Likes: 2
From: rockwall tx
Default

im talking about the rotor, not spinning the whole distributor to set timing. i think its a tooth off just know which way to rotate the rotor inside.
Reply
Old Mar 29, 2006 | 10:25 PM
  #6  
big_G's Avatar
big_G
Le Mans Master
15 Year Member
 
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Default

Correct, S469
Reply
Old Mar 29, 2006 | 10:28 PM
  #7  
jlaw68's Avatar
jlaw68
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2005
Posts: 494
Likes: 2
From: rockwall tx
Default

Originally Posted by Avette4me
it's a possibility that you're not off a tooth but turned the oil pump a little when you removed the distributor...if so, you might need to reach down into the distrbutor hole with a long screwdriver and turn the slot on the pump that the dist sets into..
the oil pump has to be lined up for the distributor to drop all the way down. but i have to distributor turn counter clockwise as far as i can and i cant get it in time properly
Reply
Old Mar 29, 2006 | 10:30 PM
  #8  
jlaw68's Avatar
jlaw68
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2005
Posts: 494
Likes: 2
From: rockwall tx
Default

Originally Posted by S489
i've been known to be subject to the 50/50/90 rule
whats the 50/50/90 rule?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Mar 29, 2006 | 10:34 PM
  #9  
Avette4me's Avatar
Avette4me
Le Mans Master
15 Year Member
 
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
Default

Originally Posted by jlaw68
the oil pump has to be lined up for the distributor to drop all the way down. but i have to distributor turn counter clockwise as far as i can and i cant get it in time properly
correct..but if you reach into the hole and rotate the pump slot a little, you won't have to any longer...
Reply
Old Mar 29, 2006 | 10:41 PM
  #10  
jlaw68's Avatar
jlaw68
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2005
Posts: 494
Likes: 2
From: rockwall tx
Default

Originally Posted by Avette4me
correct..but if you reach into the hole and rotate the pump slot a little, you won't have to any longer...
im stumped. if i turn the pump a little i wont have to do what any longer?
Reply
Old Mar 29, 2006 | 10:45 PM
  #11  
S489's Avatar
S489
Burning Brakes
 
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
Default

goes something like: if I have a 50/50 chance of something going my way, 90 percent of the time it won't.

I've seen some crank or bump the engine over to get the dist to drop. It never fails that I always end up a) finding TDC, b) etc., c) etc., etc.
50/50/90 again. . .
Reply
Old Mar 29, 2006 | 10:46 PM
  #12  
Rusted40's Avatar
Rusted40
Instructor
20 Year Member
 
Joined: Nov 2005
Posts: 207
Likes: 34
From: raleigh N.C.
Default

unless you have a remote starter switch its good to have a friend there
remove the #1 spark plug
rotate the engine with your "friend"s finger in the plughole
when it gets on compression you will hear a PSSSH
now after you have established compression stroke line up zero on the timing tab
now you are ready to attempt to install the distributor
find the longest biggest flatblade screwdriver you can
you must turn the oilpump shaft with it to get your rotor clocked right
if you are using a HEI the coil should be lined up with the firewall
any other type should be installed with vacuum advance clearance in mind
if you have an old cap drill a hole between the #1 and coil lugs to make it easier to line up the timing
Reply
Old Mar 29, 2006 | 10:47 PM
  #13  
Avette4me's Avatar
Avette4me
Le Mans Master
15 Year Member
 
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
Default

Originally Posted by jlaw68
im stumped. if i turn the pump a little i wont have to do what any longer?
if i understood you correctly, you have your distributor turned as far as possible to get your timing right.

Try reaching into the hole and turn the slot on the pump a little. This will allow you to mesh a tooth forward or back from where you are now meshing..

as you said, the pump must line up so the dist will fall in. However, moving the pump a little has no effect on timing, just effects what position the dist falls in..
Reply
Old Mar 29, 2006 | 10:55 PM
  #14  
S489's Avatar
S489
Burning Brakes
 
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
Default

yea, it's cool to take an old cap and cut a bunch of windows in it, then point the timing light at it. with the vacuum advance disconnected, the no 1 terminal should be lined up with the rotor; it matters not what the rpm is as the advance relationship stays the same. however, place a vacuum source on the vacuum advance canister and watch the rotor move (advance) relative to the cap terminal. figure out where the engine operates most of the time and then notice if one side of the terminal is always worn more.
Reply
Old Mar 29, 2006 | 10:58 PM
  #15  
jlaw68's Avatar
jlaw68
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Apr 2005
Posts: 494
Likes: 2
From: rockwall tx
Default

Originally Posted by Avette4me
if i understood you correctly, you have your distributor turned as far as possible to get your timing right.

Try reaching into the hole and turn the slot on the pump a little. This will allow you to mesh a tooth forward or back from where you are now meshing..

as you said, the pump must line up so the dist will fall in. However, moving the pump a little has no effect on timing, just effects what position the dist falls in..
now that im on the same page as you, which way do you turn the rotor to advance the timing? clockwise or counter clockwise?
Reply
Old Mar 29, 2006 | 11:00 PM
  #16  
Avette4me's Avatar
Avette4me
Le Mans Master
15 Year Member
 
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
Default

just my opinion, but some of that stuff seems like it's making a relatively simple job into a difficult one...

anyway, good luck..
Reply
Old Mar 29, 2006 | 11:00 PM
  #17  
S489's Avatar
S489
Burning Brakes
 
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
Default

see #3
Reply

Get notified of new replies

To not the normal timing question

Old Mar 29, 2006 | 11:02 PM
  #18  
S489's Avatar
S489
Burning Brakes
 
Joined: Feb 2006
Posts: 1,024
Likes: 1
From: AL
Default

i'm not that familiar with HEI systems; is there any wiring required to be removed to check the timing with a timing light?
Reply
Old Mar 29, 2006 | 11:04 PM
  #19  
Avette4me's Avatar
Avette4me
Le Mans Master
15 Year Member
 
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
Default

Originally Posted by jlaw68
now that im on the same page as you, which way do you turn the rotor to advance the timing? clockwise or counter clockwise?
the rotor turns clockwise when the weights swing out to advance it and the timing.....

if you're turning the distributor fully couter clockwise to time your car, turn the pump slot a little in the opposite direction and take another look at it..
Reply
Old Mar 29, 2006 | 11:14 PM
  #20  
lars's Avatar
lars
Tech Contributor
Supporting Lifetime Gold
25 Year Member
Conversation Starter
Photogenic
Top Answer: 3
 
Joined: Aug 1999
Posts: 14,379
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
Default

....What...?
Having removed and installed over 200 distributors during my various Tuning for Beer Tours, I thought I was pretty good at distruibutor installation. But I can't figure out what the heck you guys are talking about here. One of us is drunk...

You can't advance timing by turning the rotor. The rotor can't be turned when the distribnutor is installed. Timing is advanced by rotating the distributor body counter clockwise. If proper timing cannot be achieved (not enough advance), the distributor must be lifted up out of the block, and the rotor must be rotated clockwise to gain more adjustment on the distrubutor body. But timing is advanced by rotating the body counter clockwise.

...and other than affecting the installed orientation of the distributor, there is no effect of having the distributor "one tooth off." Timing can be set with the distributor installed in any orientation as long as the vacuum advance control unit is not physically hitting the back of the manifold and preventing the timing from being set.

Anyoine who needs a "How to Install your Distributor" paper with photos and step-by-step instructions can e-mail me at
V8FastCars@msn.com
The paper includes a "How to set your Timing" section as well.

I'm fixing another Martini and going back to the workshop....
Reply



All times are GMT -4. The time now is 02:08 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE