Timing
Timing
So I took my distributer out for an intake but forgot to mark where the rotor was pointed and when I put the distributor back in it’s pointed away from engine and more at the passenger seat so then I decided to try to get to tdc and when I tried to rotate the engine by hand the harmonic balencer bolt just got loose I need some help
Supreme Member




Joined: Jul 2006
Posts: 2,917
Likes: 803
From: 212 is up in this Bit@#
Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Timing
Caution!
Rotation one time around back to TDC will put you on the #6 cylinder.
Rotate a Second time to be back at TDC on the #1 Cylinder.
Rotation one time around back to TDC will put you on the #6 cylinder.
Rotate a Second time to be back at TDC on the #1 Cylinder.
Moderator


Joined: Jul 1999
Posts: 17,273
Likes: 171
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Timing
If you're worried about the distributor bolt, you can always bar the engine over with a screwdriver on the flywheel/flexplate.
It's a lot easier to bar the engine over if all the spark plugs are out. With all the plugs out, put some tissue paper into the #1 plug hole and bar the engine over by hand. When the tissue paper gets blown out, you'll know that #1 is on the compression stroke. Line up the timing marks on the balancer then drop the distributor in with the rotor pointing in roughly the 5 o'clock position. You may need to use a flat tip screwdriver to turn the oil pump drive so that it will line up with the distributor.
That will only get you into a ballpark range for a distributor install. There a lot more involved to get the timing close to perfect so that you won't have to fiddle with it very much once the engine starts.
It's a lot easier to bar the engine over if all the spark plugs are out. With all the plugs out, put some tissue paper into the #1 plug hole and bar the engine over by hand. When the tissue paper gets blown out, you'll know that #1 is on the compression stroke. Line up the timing marks on the balancer then drop the distributor in with the rotor pointing in roughly the 5 o'clock position. You may need to use a flat tip screwdriver to turn the oil pump drive so that it will line up with the distributor.
That will only get you into a ballpark range for a distributor install. There a lot more involved to get the timing close to perfect so that you won't have to fiddle with it very much once the engine starts.
Re: Timing
If you're worried about the distributor bolt, you can always bar the engine over with a screwdriver on the flywheel/flexplate.
It's a lot easier to bar the engine over if all the spark plugs are out. With all the plugs out, put some tissue paper into the #1 plug hole and bar the engine over by hand. When the tissue paper gets blown out, you'll know that #1 is on the compression stroke. Line up the timing marks on the balancer then drop the distributor in with the rotor pointing in roughly the 5 o'clock position. You may need to use a flat tip screwdriver to turn the oil pump drive so that it will line up with the distributor.
That will only get you into a ballpark range for a distributor install. There a lot more involved to get the timing close to perfect so that you won't have to fiddle with it very much once the engine starts.
It's a lot easier to bar the engine over if all the spark plugs are out. With all the plugs out, put some tissue paper into the #1 plug hole and bar the engine over by hand. When the tissue paper gets blown out, you'll know that #1 is on the compression stroke. Line up the timing marks on the balancer then drop the distributor in with the rotor pointing in roughly the 5 o'clock position. You may need to use a flat tip screwdriver to turn the oil pump drive so that it will line up with the distributor.
That will only get you into a ballpark range for a distributor install. There a lot more involved to get the timing close to perfect so that you won't have to fiddle with it very much once the engine starts.
Re: Timing
If you're worried about the distributor bolt, you can always bar the engine over with a screwdriver on the flywheel/flexplate.
It's a lot easier to bar the engine over if all the spark plugs are out. With all the plugs out, put some tissue paper into the #1 plug hole and bar the engine over by hand. When the tissue paper gets blown out, you'll know that #1 is on the compression stroke. Line up the timing marks on the balancer then drop the distributor in with the rotor pointing in roughly the 5 o'clock position. You may need to use a flat tip screwdriver to turn the oil pump drive so that it will line up with the distributor.
That will only get you into a ballpark range for a distributor install. There a lot more involved to get the timing close to perfect so that you won't have to fiddle with it very much once the engine starts.
It's a lot easier to bar the engine over if all the spark plugs are out. With all the plugs out, put some tissue paper into the #1 plug hole and bar the engine over by hand. When the tissue paper gets blown out, you'll know that #1 is on the compression stroke. Line up the timing marks on the balancer then drop the distributor in with the rotor pointing in roughly the 5 o'clock position. You may need to use a flat tip screwdriver to turn the oil pump drive so that it will line up with the distributor.
That will only get you into a ballpark range for a distributor install. There a lot more involved to get the timing close to perfect so that you won't have to fiddle with it very much once the engine starts.
Re: Timing
I put a VC05 from autuzone in my 85 TPI IROC. My dist would not fire so I put in new one and got spark. Turned dist ccw until car started and timing read 16 btdc with EST connected. I try to start up after a few days and no start unless I turn the dist
I need help with this no start condition and also the procedure to set timing to 6 btdc with EST disconnected.
I need help with this no start condition and also the procedure to set timing to 6 btdc with EST disconnected.
Last edited by 1979gmgm@; Jan 2, 2023 at 09:51 AM. Reason: Put there as reply vs new thread.
Trending Topics
Moderator


Joined: Jul 1999
Posts: 17,273
Likes: 171
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Timing
Timing is set with EST disconnected. Ignore what the timing is when the EST is connected because the computer is controlling it depending on what it wants.
Thread
Thread Starter
Forum
Replies
Last Post
Matthew91-Z28
Tech / General Engine
7
Jul 10, 2006 07:13 PM





