Number one cylinder on a 3.1?
Number one cylinder on a 3.1?
Distributor is out and now I need to know which cylinder is number one. Is is passenger side or driver's side?
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91 rs, convertible, K&N, Edelbrock open element cleaner, 3.73, B&M mega-shifter, goodmark cowl-induction hood
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91 rs, convertible, K&N, Edelbrock open element cleaner, 3.73, B&M mega-shifter, goodmark cowl-induction hood
match up the marks on the balancer at zero. make sure the valves are closed on #1. put the rotor pointing to #1 plug wire. put distributor in engine.
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-=ICON MOTORSPORTS=-
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-=ICON MOTORSPORTS=-
Supreme Member
Joined: Dec 1999
Posts: 1,237
Likes: 1
From: Reno, NV
Car: yep
Engine: uhuh
Transmission: sure does
To elaborate a little... 
I usually pull the #1 plug out (whichever cylinder is the farthest foward is #1)
Disable the ign. (pull the coil wire off)
While putting your finger in the #1 plug hole have someone bump the key until you feel compression pushing your finger.
Finish rotating the engine by hand until the timing marks line up at TDC.
Drop the dist in making sure to allow for the gear to mesh, so when its all the way down the rotor points at #1. (you must have the rotor a little ahead of #1 so it can mesh with the cam gear.)
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ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3

I usually pull the #1 plug out (whichever cylinder is the farthest foward is #1)
Disable the ign. (pull the coil wire off)
While putting your finger in the #1 plug hole have someone bump the key until you feel compression pushing your finger.
Finish rotating the engine by hand until the timing marks line up at TDC.
Drop the dist in making sure to allow for the gear to mesh, so when its all the way down the rotor points at #1. (you must have the rotor a little ahead of #1 so it can mesh with the cam gear.)
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
GO #3
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Ack, NO! Number one is the frontmost passenger side cylinder!
Okay, well technically it's that way on a 2.8, but there's no major differences between a 2.8 and 3.1. And yes, I am sure of #1 being the front passenger on a 2.8.
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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
Okay, well technically it's that way on a 2.8, but there's no major differences between a 2.8 and 3.1. And yes, I am sure of #1 being the front passenger on a 2.8.

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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
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