Crankshaft Keyway Position/Timing Mark Setting
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Car: 91TealRS
Engine: 3.1L
Transmission: MB1 5spd
Axle/Gears: 3.42
Crankshaft Keyway Position/Timing Mark Setting
Can anyone tell me if the keyway in the crankshaft lines up to the #1 rod journal? I have been trying to get the timing mark set correctly.
As you know, the timing indicator is adjustable, and some previous owner slid mine all the way to the left, so when it shows correct timing, it actually has a huge advance. I found this out while doing a timing chain replacement. I slid it all the way to the right, I think that should be correct.
If I knew for a fact the keyway in the crank lines up exactly to the #1 rod, I could figure 30 degrees left of 12 o'clock is TDC. I found a diagram for installing chains and it says 27 degrees, but that puts my timing mark at a little over 2 degrees ATDC. 30 degrees would line it up perfectly.
Anyone know?
Thanks,
Bob
As you know, the timing indicator is adjustable, and some previous owner slid mine all the way to the left, so when it shows correct timing, it actually has a huge advance. I found this out while doing a timing chain replacement. I slid it all the way to the right, I think that should be correct.
If I knew for a fact the keyway in the crank lines up exactly to the #1 rod, I could figure 30 degrees left of 12 o'clock is TDC. I found a diagram for installing chains and it says 27 degrees, but that puts my timing mark at a little over 2 degrees ATDC. 30 degrees would line it up perfectly.
Anyone know?
Thanks,
Bob
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Car: 89 RS 89 iroc 87 firebird
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Re: Crankshaft Keyway Position/Timing Mark Setting
put #1 on tdc reinstall the timing cover and balancer.then stand were u would normally be looking when using the timing light then adjust the pointer tab
#3
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Car: 91TealRS
Engine: 3.1L
Transmission: MB1 5spd
Axle/Gears: 3.42
Re: Crankshaft Keyway Position/Timing Mark Setting
Thanks, but I already did the timing chain, it is completely assembled and running. I just want to verify the pointer is right without stripping it down again.
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Car: 91TealRS
Engine: 3.1L
Transmission: MB1 5spd
Axle/Gears: 3.42
Re: Crankshaft Keyway Position/Timing Mark Setting
Just a note to any future readers of this thread:
Yes, the keyway lines up exactly to the #1 journal, I went to a crankshaft shop, and, in fact, every crank I saw there that had a keyway had it aligned with the #1 rod journal.
Question answered........
Yes, the keyway lines up exactly to the #1 journal, I went to a crankshaft shop, and, in fact, every crank I saw there that had a keyway had it aligned with the #1 rod journal.
Question answered........
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