Timing Mark
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Member
Joined: Oct 2002
Posts: 156
Likes: 1
From: Winnipeg, Canada
Car: 88 IROC Convertible
Engine: 355 (Finally!)
Transmission: Auto :(
Timing Mark
Is there a way to reference the balancer's timing mark with the keyway on the crank? (ie - the mark is 180deg opposite from the keyway).
I don't trust the mark...I think the outer ring has sliped on the rubber...
I don't trust the mark...I think the outer ring has sliped on the rubber...
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Joined: Jul 2003
Posts: 4,803
Likes: 2
From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
If i recall....
Pre 69 engines have the TDC mark 2° to the left of the keyway centerline.
The 69-85 engines have the TDC mark 10° to the left of the keyway centerline.
The 86 to 92 engines have the TDC mark 40° to the left of the keyway centerline.
The numbers may not be accurate, but i know that they have changed over the years. Im getting rusty.....im not sure
Go in with a protractor and center it on the balancer bolt. Position the 0° or the 90° on the protractor in-line with the crankshaft keyway. use a straight edge of some sort and place one end on the center point (balancer bolt) and the other end on the timing line that is etched in the balancer. Using that, determine where the timing mark is in relation to the crankshaft keyway. That is the method i used when checking my balancer. It may not be the most effective way, but it works using common household items.
Pre 69 engines have the TDC mark 2° to the left of the keyway centerline.
The 69-85 engines have the TDC mark 10° to the left of the keyway centerline.
The 86 to 92 engines have the TDC mark 40° to the left of the keyway centerline.
The numbers may not be accurate, but i know that they have changed over the years. Im getting rusty.....im not sure
Go in with a protractor and center it on the balancer bolt. Position the 0° or the 90° on the protractor in-line with the crankshaft keyway. use a straight edge of some sort and place one end on the center point (balancer bolt) and the other end on the timing line that is etched in the balancer. Using that, determine where the timing mark is in relation to the crankshaft keyway. That is the method i used when checking my balancer. It may not be the most effective way, but it works using common household items.
Last edited by Stekman; May 8, 2004 at 05:20 PM.
Thread Starter
Member
Joined: Oct 2002
Posts: 156
Likes: 1
From: Winnipeg, Canada
Car: 88 IROC Convertible
Engine: 355 (Finally!)
Transmission: Auto :(
Bravo Steckman! - as the Beastie Boys would say - 'you're kicking serious knowledge'
That was exactly the info I needed - I'll let you know how it goes after I find a protractor!!
That was exactly the info I needed - I'll let you know how it goes after I find a protractor!!
Supreme Member
Joined: Aug 2001
Posts: 1,770
Likes: 1
From: Pacific Northwest
Car: '85 IROC
Engine: LB9
Transmission: 700 R4
You need a degree wheel and some sort of TDC locating device.
They're relativele cheap, and if you had one now, there'd be no need to be applying guesswork.
Even a timing tape would be good, or you could order one of those degreed harmonic balancer covers. I see them on eBay all the time.
They're relativele cheap, and if you had one now, there'd be no need to be applying guesswork.
Even a timing tape would be good, or you could order one of those degreed harmonic balancer covers. I see them on eBay all the time.
TGO Supporter
Joined: Jul 2003
Posts: 4,803
Likes: 2
From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
Yea, i guess the method used would depend on location of the balancer at the moment. Is it on or off the engine?
At the time when i had to figure out of my timing mark was aligned, i did not have a timing wheel. So i had to make do with what i had.
You still toss a "c" in my name. Heh, oh well.
At the time when i had to figure out of my timing mark was aligned, i did not have a timing wheel. So i had to make do with what i had.

You still toss a "c" in my name. Heh, oh well.
Supreme Member
Joined: Aug 2001
Posts: 1,770
Likes: 1
From: Pacific Northwest
Car: '85 IROC
Engine: LB9
Transmission: 700 R4
The parts I mentioned, a degreed dampener cover and TDC locator are both made by Proform, and I've seen them online for about $25 and $10 from a few different dealers.
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