Timing - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old Jan 25th, 02, 07:21 AM Thread Starter
 
Join Date: Aug 2001
Location: Chicago, Illinois
Posts: 26
Post

I recently blew a rod on my 87 trans am 305,
so I just the engine back rebuilt, my question is how do I properly re-install the distributor? How do I know when the engine is at TDC? It's just been rebuilt so I really don't want to mess around with timing with the engine running, you know I don't want to put too much strain on it and ruin the engine.
Nick Mc is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old Jan 25th, 02, 09:34 AM
Senior Tech
Matt Jones
 
Join Date: Jan 2002
Location: Renton, WA USA
Posts: 2,765
Post

Ok, here's what you do:
1. Turn the engine over until you are approaching the #1 TDC. You can do this by turning it over and putting your thumb over the #1 spark plug hole, and you will feel the compression. When you feel this, stop.
2. Install your harmonic balancer (if you haven't done so already), and the timing tab should be in place also. Continue to rotate the engine until the timing mark on the balancer reaches 12 degrees (BTDC) on the timing tab. You should now be on 12 degrees BTDC on the #1 cylinder.
3. Take your distributor, and install the cap and rotor. Now, take a marker or whatever, and mark on the distributor BODY (not the cap) where the #1 plug terminal is on the cap. Take off the cap. You should now be able to determine where the #1 plug terminal is without the cap installed.
4. Install distributor, with rotor installed, but not the cap. You will probably have to turn the rotor counter-clockwise a bit for the rotor to reach the #1 terminal (the mark you just made), because the distributor gear is ground helically (curved). Try to keep the distributor body in the same position as it is in stock configuration.
5. If you find that the distributor wont seat fully, take a long, clean screwdriver and rotate the oil pump (through the distributor hole), and reinstall the distributor. You may have to rotate the pump several times for it to get seated fully. Some people just bump the engine over until it seats, but I like it to seat fully before I rotate the crank.
6. With the distributor seated fully, and the rotor is pointing in the general direction of the #1 mark that you made, rotate the distributor body until the rotor points exactly at the mark. Tighten down the distributor, and reinstall cap, wires, etc.

You should now be able to start the engine with 12 degrees of initial timing. 12 degrees will usually provide very quick starts, assuming the carburetor has fuel and you've primed it (squirted some gas down into the intake via the throttle).

Fire the baby up and make some noise.
Matt

------------------
1969 Base Camaro
Vortec 350, TH-400
All sheetmetal is NOS GM
Silver69Camaro is offline  
post #3 of 4 (permalink) Old Jan 25th, 02, 10:06 AM Thread Starter
 
Join Date: Aug 2001
Location: Chicago, Illinois
Posts: 26
Post

Thanks for the help Matt.
Nick Mc is offline  
 
post #4 of 4 (permalink) Old Jan 25th, 02, 01:43 PM
Senior Tech
 
Join Date: Apr 2000
Location: holliston, mass
Posts: 622
Post

I do it basically the same way, but i like to bump the engine over to engage the oil pump drive.. (less hassle than the screwdriver deal) and i like to point the rotor towards the no one cylinder, for easier reference later on..

Diffrent strokes...
Same result
John
68ragtop is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome