| Timing Tab - Where is it? [message #91321] |
Tue, 06 July 2010 20:43  |
captjack
Messages: 271
Registered: February 2010
Location: Sebastopol, California
Karma: 1
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Senior Member |
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I'm trying to find the timing tab on my 455. I can see the mark on the harmonic balancer, but can't see the timing tab anywhere. I'd appreciate any help telling me where I should be looking. What are the current recommendations for setting the timing? 10 BTDC?
Thanks,
Jack Christensen - K6ROW,
'76 Glenbrook/Clasco - "The Silver Bullet",
Sebastopol, CA
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| Re: Timing Tab - Where is it? [message #91329 is a reply to message #91321] |
Tue, 06 July 2010 21:27  |
fred v
Messages: 999
Registered: April 2006
Location: pensacola, fl.
Karma: 0
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it's really hard to see and to get a timing light on but look down the left front of the engine from the top. time at 10 deg. BTDC
Fred V
'77 Royale RB 455
P'cola, Fl
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| Re: Timing Tab - Where is it? [message #91338 is a reply to message #91321] |
Tue, 06 July 2010 22:20 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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Senior Member |
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it is plastic, and could have broken off in the distant past... It is held on by one bolt, so it can be replaced.
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: Timing Tab - Where is it? [message #91356 is a reply to message #91321] |
Wed, 07 July 2010 02:38 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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You are going to love finding it.
FIRST.
Take a white paint marker or white out and mark the line on the harmonic balancer.
Then go inside and completely remove the hatch cover. Position yourself all the way in front of the engine and look straight down. With the timing light going you should see the white line flashing at you. The indicator will be right under the white line. It is difficult to see and and you must be on top looking straight down.
If the timing is way off and the engine is running OK, Do NOT change it. You probably have a slipped harmonic balancer rather than the engine being out of time. One an HEI there is no reason for the timing to change once it was set correctly. On a points ignition it could change some if the points block wore some.
Also make sure you have the vacuum line to the distributor advance disconnected and plugged prior to checking and setting the timing.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Timing Tab - Where is it? [message #91375 is a reply to message #91356] |
Wed, 07 July 2010 08:04 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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As far as the crappy plastic version of the timing tab goes I got a metal version off of a non Toro 455 that worked really nice.
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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