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New timing chain and gear

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Old Apr 20, 2018 | 10:27 AM
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Default New timing chain and gear

When installing a new timing chain/gear set on a 69 then cylinder 1 has to be in TDC, and the crankshaft dot has to be @12 and the camshaft gear dot has to be at @12 also right?

If crankshaft dot is @12 and camshaft dot is @6 it is TDC for cylinder 6 right?
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Old Apr 20, 2018 | 10:41 AM
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yes
when the dots line up
crank dot on top and cam dot on bottom is
#6 firing.
so remember to turn for number 1 for dist.
be aware of a 3 keyway crank gear.
1 for 0 1 for 4deg adv 1 for 4deg retard
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Old Apr 20, 2018 | 10:47 AM
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Originally Posted by c3_dk
When installing a new timing chain/gear set on a 69 then cylinder 1 has to be in TDC, and the crankshaft dot has to be @12 and the camshaft gear dot has to be at @12 also right?

If crankshaft dot is @12 and camshaft dot is @6 it is TDC for cylinder 6 right?
Yes but even if you choose to install the timing gears (dot to dot) on the #6 TDC the camshaft and crankshaft will still be in proper mechanical time....

You will just have to turn the engine over a few times to get it up on #1 TDC to correctly install the distributor...

It won't matter which one of those methods you use to install the timing set... you can use the 12 and 12 method or the dot to dot method, because you are going to need to turn the engine over many times after bolting the timing set on.... for example when adjusting the valves.
Will

Last edited by rklessdriver; Apr 20, 2018 at 10:50 AM.
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Old Apr 20, 2018 | 10:53 AM
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Originally Posted by calwldlife
yes
when the dots line up
crank dot on top and cam dot on bottom is
#6 firing.
so remember to turn for number 1 for dist.
be aware of a 3 keyway crank gear.
1 for 0 1 for 4deg adv 1 for 4deg retard
Originally Posted by rklessdriver
Yes but even if you choose to install the timing gears (dot to dot) on the #6 TDC the camshaft and crankshaft will still be in proper mechanical time....

You will just have to turn the engine over a few times to get it up on #1 TDC to correctly install the distributor...

It won't matter which one of those methods you use to install the timing set... you can use the 12 and 12 method or the dot to dot method, because you are going to need to turn the engine over many times after bolting the timing set on.... for example when adjusting the valves.
Will
Thx both
I just had to be sure.......
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Old Apr 20, 2018 | 11:20 AM
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Originally Posted by calwldlife
yes
when the dots line up
crank dot on top and cam dot on bottom is
#6 firing.
so remember to turn for number 1 for dist.
be aware of a 3 keyway crank gear.
1 for 0 1 for 4deg adv 1 for 4deg retard
BTW yes, as I remember it, the key for 0 is approx. @ 02.00 right?
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Old Apr 20, 2018 | 12:33 PM
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This is what the timing marks look like when the engine is set to fire at #6 TDC.


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Old Apr 20, 2018 | 12:47 PM
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Originally Posted by drwet
This is what the timing marks look like when the engine is set to fire at #6 TDC.


Yes I agree, and the key is @ "02.00" o'clock
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Old Apr 20, 2018 | 02:51 PM
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"this is what it looks like when . . . . "

Only if you rolled your car over.
(had to say that)

Note the grade 8 bolts, the button and note the bolt locking plate ($5) cheap insurance. Good job!

Last edited by HeadsU.P.; Apr 20, 2018 at 06:24 PM.
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Old Apr 20, 2018 | 07:17 PM
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[QUOTE=HeadsU.P.;1597040009]"this is what it looks like when . . . . "

Only if you rolled your car over.
(had to say that)

QUOTE]

OK. #9, BDC.
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Old Apr 21, 2018 | 12:41 AM
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I thought it the very rare "up side down" engine, only made for people on the other side of the earth, and one year option only !! :- )
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Old Apr 21, 2018 | 06:37 AM
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It looks correct to our Australian friends.
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