Return to the home page...

Go Back   Moyer Marine Atomic 4 Community - Home of the Afourians > Discussion Topics > General Maintenance

Reply
 
Thread Tools Display Modes
  #1   IP: 192.186.122.174
Old 11-09-2017, 08:47 AM
GregH's Avatar
GregH GregH is offline
Senior Member
 
Join Date: Jun 2015
Location: Kingston, ON
Posts: 162
Thanks: 69
Thanked 5 Times in 4 Posts
Timing Light

Reading the threads, I've been becoming more aware about the talk of using a timing light. Is this something that should be standard in our arsenal of tools?

Are there certain features need to look for? As you can tell I've never even held one in my life.

would ones like below work?

http://www.canadiantire.ca/en/pdp/in...-0252026p.html


https://www.princessauto.com/en/deta...ht/A-p8000943e
Reply With Quote
  #2   IP: 137.200.32.22
Old 11-09-2017, 09:43 AM
joe_db's Avatar
joe_db joe_db is offline
 
Join Date: May 2009
Posts: 2,762
Thanks: 12
Thanked 204 Times in 155 Posts
Quote:
Originally Posted by GregH View Post
Reading the threads, I've been becoming more aware about the talk of using a timing light. Is this something that should be standard in our arsenal of tools?

Are there certain features need to look for? As you can tell I've never even held one in my life.

would ones like below work?

http://www.canadiantire.ca/en/pdp/in...-0252026p.html


https://www.princessauto.com/en/deta...ht/A-p8000943e
You need the one with the timing readout. We don't have a way to read timing directly on the engine against a scale for anything but 0 degrees.
Reply With Quote
  #3   IP: 71.178.89.142
Old 11-09-2017, 08:45 PM
sastanley's Avatar
sastanley sastanley is offline
Afourian MVP
 
Join Date: Sep 2008
Location: Solomons, MD
Posts: 6,286
Thanks: 373
Thanked 231 Times in 179 Posts
If you google Craftsman timing light, I have one of these..it has a dial on the back to allow for the advance weights, so you can see if they are working correctly too at 17° BTDC. Used, they are now in the $15-20 range.

This light will work for either a flywheel check with the chunky roll pin, or even better with the more precise measurements we are getting with a clamp on pointer at TDC and a mark on the accessory drive. Checking your avatar I can see a flywheel check is way easier, and should still get you close. There is a (sorta crude) timing mark built into the flywheel cover. The real drawback here is the roll pin.. it is just too fat, so focus on the very center of the roll pin if checking against the flywheel cover marker...or try to get a nice tight bright colored mark on the middle of the roll pin to increase accuracy...like with a silver Sharpie or something.
__________________
-Shawn
"Twice Around" - '77 Catalina 30, #511 with original A-4 & MMI manifold.
Great fall sailing!!

http://www.moyermarine.com/forums/signaturepics/sigpic3231_6.gif

Last edited by sastanley; 11-09-2017 at 08:51 PM.
Reply With Quote
  #4   IP: 192.186.122.174
Old 11-10-2017, 08:43 AM
GregH's Avatar
GregH GregH is offline
Senior Member
 
Join Date: Jun 2015
Location: Kingston, ON
Posts: 162
Thanks: 69
Thanked 5 Times in 4 Posts
Quote:
Originally Posted by sastanley View Post
If you google Craftsman timing light, I have one of these..it has a dial on the back to allow for the advance weights, so you can see if they are working correctly too at 17° BTDC.
- The one link for Princess Auto has a dial at the back - will have to check it out to read more and see if that is similar to the Craftsman


Quote:
This light will work for either a flywheel check with the chunky roll pin, or even better with the more precise measurements we are getting with a clamp on pointer at TDC and a mark on the accessory drive. Checking your avatar I can see a flywheel check is way easier, and should still get you close. There is a (sorta crude) timing mark built into the flywheel cover. The real drawback here is the roll pin.. it is just too fat, so focus on the very center of the roll pin if checking against the flywheel cover marker...or try to get a nice tight bright colored mark on the middle of the roll pin to increase accuracy...like with a silver Sharpie or something.
- As I was reading this I was thinking.. what about a thin stripe of white paint on the roll pin...

Won't be dealing with this until the spring but I best start planning now what with all the tasks lined up!
Reply With Quote
  #5   IP: 99.30.185.198
Old 11-10-2017, 10:01 AM
thatch thatch is offline
Afourian MVP
 
Join Date: Dec 2009
Location: Santa clarita, Ca.
Posts: 945
Thanks: 21
Thanked 100 Times in 63 Posts
Many mechanics carry a small bottle of white fingernail polish in their tool box for highlighting timing marks. I have found it safest to have your wife purchase it, to avoid the obvious question.
Tom
Reply With Quote
  #6   IP: 71.178.89.142
Old 11-10-2017, 03:52 PM
sastanley's Avatar
sastanley sastanley is offline
Afourian MVP
 
Join Date: Sep 2008
Location: Solomons, MD
Posts: 6,286
Thanks: 373
Thanked 231 Times in 179 Posts
Tom, Funny you say that. I went into the local CVS and asked the cashier (a female) for the cheapest brightest nail polish. I explained I was getting it for timing marks on a boat motor, and she said, "I get that a lot from guys..how about this iridescent blue for $1.99?? I hear it works great against a timing light."

Some chicks get it!
__________________
-Shawn
"Twice Around" - '77 Catalina 30, #511 with original A-4 & MMI manifold.
Great fall sailing!!

http://www.moyermarine.com/forums/signaturepics/sigpic3231_6.gif
Reply With Quote
  #7   IP: 216.4.8.24
Old 11-10-2017, 07:02 PM
roadnsky's Avatar
roadnsky roadnsky is offline
Afourian MVP
 
Join Date: Dec 2008
Location: Boulder City, NV
Posts: 2,613
Thanks: 12
Thanked 122 Times in 86 Posts
Quote:
Originally Posted by thatch View Post
I have found it safest to have your wife purchase it, to avoid the obvious question.
Quote:
Originally Posted by sastanley View Post
Some chicks get it!
And... some DIG it!
__________________
-Jerry

'Lone Ranger'

1978 RANGER 30
Reply With Quote
  #8   IP: 172.222.238.142
Old 11-11-2017, 10:53 AM
Dave Neptune Dave Neptune is offline
Afourian MVP
 
Join Date: Jan 2007
Location: Lake Arrowhead Ca.
Posts: 3,672
Thanks: 206
Thanked 204 Times in 144 Posts
Personally I prefer the bright red.

Greg, even if you do not have a perfect mark for TDC the mark you make becomes relative to what you are doing. From the mark you can determine the C-advance is operating properly and full adv by 1700 rpm's.

Now if you change the timing you can go a lil bit in either direction WITH CONTROL to test for performance improvements a couple degrees at a time.

A vacuum gage is very helpful for the above.

Dave Neptune
Reply With Quote
The Following User Says Thank You to Dave Neptune For This Useful Post:
GregH (11-11-2017)
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Timing on the Hard Whippet Ignition System 3 11-28-2015 11:48 AM
timing light results joe_db General Maintenance 9 08-28-2013 11:18 AM
digital timing light joe_db General Interest 11 08-23-2013 05:00 PM
Coil troubleshooting with a test light? JonnyQuest Ignition System 2 05-04-2013 09:33 AM
Timing and centrifugal advance unregistered Ignition System 1 06-07-2006 08:18 AM


All times are GMT -5. The time now is 09:00 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2017 Moyer Marine Inc.

All Rights Reserved