240Z, 260Z, 280Z Performance / Technical Discussions related to performance motor enhancements, upgrades.

Timing gun

Old 05-20-2005, 08:37 PM
  #1  
Registered User
Thread Starter
 
Fast240Z's Avatar
 
Join Date: Jun 2004
Location: Sacramento, CA
Posts: 833
Timing gun

I have a timing gun with advance on it, and I have no idea how the hell to use it. I just want to set the timing on my Z, and I don't know how to properly use the gun, or what to set the timing to. Now I feel stupid for asking.
Fast240Z is offline  
Old 05-21-2005, 05:07 PM
  #2  
I have a present for you...
 
theramz's Avatar
 
Join Date: Mar 2003
Location: dayton, nevada usa
Posts: 1,661
Mine is about 30 years old but the two small leads go to your battery +/-, The large heavy duty one clamps on your #1 spark plug wire. You set your timing with the vacuum advance disconnected and plugged, it should be 5' btdc for 70-72 and 7' btdc on 73-74 cars. Clean and mark your timing marks on the crank damper with white chalk. Looking from the front of the engine from right to left the first mark is 5' atdc the next is 0, then 5, 10, 15, 20 btcd. Check instructions for your Pertronic to see if there is something else you need to do.
theramz is offline  
Old 05-25-2005, 11:13 PM
  #3  
Registered User
 
Join Date: Dec 2000
Location: Cashmere, WA 98815
Posts: 74
Then, with your new marks on the crank damper, and pointer, start the car and let it warm up. Set it to the idle speed. The dial on the timing light can then be adjusted to your timing, for example 7 degrees. If the car was previously running at 7 degrees, with the timing light set at 7 degrees (advance) your new marks on the damper and pointer should line up so it looks like it is firing on top dead center, with no advance.

With these lights, if accurate, you could dial in your advance and set it on TDC marks. Also, some cars in the past really didn't give you much in the way of timing marks more than 12 - 20 degrees. With your timing light, you could dial in a high advance setting such as 33 - 37 degrees advance, and run the motor at 5 - 6,000 rpms, and see how close in relationship you are to TDC.

Play around with it, they are fun!

Speed

Enjoy the Ride!
Speed is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
sidneyam
300ZX (Z32) Forums
3
02-21-2011 05:51 PM
Datsun_Husky
240Z, 260Z, 280Z Performance / Technical
6
11-17-2010 05:48 AM
DoTheDrew888
280ZX Performance / Technical
6
04-10-2005 01:12 AM
crazytvrguy280
280ZX Performance / Technical
2
03-27-2005 08:39 PM
Zmedic
240Z, 260Z, 280Z (S30) Forums
0
07-20-2001 01:26 PM


Thread Tools
Search this Thread
Quick Reply: Timing gun


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.