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how to adjust timing

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Old Feb 11, 2004 | 02:36 PM
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TraviZ's Avatar
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From: Woodland, CA
Car: '02 Z06
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how to adjust timing

sorry for a stupid post, but i need to learn sometime.. how to i adjust the timing on my camaro? i heard advancing about 4ddegree's is best. thanks!
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Old Feb 11, 2004 | 03:25 PM
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From: Bloomingdale,IL
Car: 91 RS
Engine: 305 Tbi (L03)
Transmission: 700r4
First thing to do is disconnect the spark advance wire to get the computer out of the equation. Its a single wire on the passenger side of the engine compartment. I dont remember the color but im sure someone does. Then just loosen the 9/16 nut at the base of the distributor and turn it counter clockwise to advance it. Youll want to use a timing light to check it.
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Old Feb 11, 2004 | 07:20 PM
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The timing tab is mounted to the timing chain cover, right behind the water pump. If it isn't there, then it's either been removed or fell off, or someone's changed the timing chain cover.

Disconnect the coil wire from the distributor.

Once you find the timing mark on the balancer, crawl under the car and have a buddy tap the starter to rotate the engine until you see a groove on the balancer that's about 1/8"-3/16" deep. Use white paint or a white crayon to fill in the groove so it's easy to see.

Hook the coil wire back to the distributor, and unhook the ESC connector. It's located near the blower motor on the passenger side firewall. It'll be the brown wire sticking out of a black wire loom. Just separate the connector and leave it sit.

Attach the red connector to the positive ("+" or red) terminal on the battery, and the black connector to the negative ("-" or black) on the battery.

Hook up the timing light using the inductive pickup to the #1 sparkplug wire. It's the one that's on the driver's side of the engine, closest to the radiator.

Loosen the distributor hold down bolt just enough that it takes a little effort to be able to rotate the distributor either clockwise or counter clockwise.

Start the engine and aim the timing gun straight down between the water pump and the engine block. Look for the groove in the balancer.

A stock LO3 should be set at 0* BTDC. The groove should be lined up to the first "V" on the timing tab (the one closest to the driver's side). If not, rotate the distributor one way or the other until it is. At this point ignore the other "V' grooves.

Turn the engine off and tighten the dist. hold down bolt. Start the car and check the timing again to be sure the dist. didn't move while you were tightening the hold-down bolt. If so, correct it.

Once you're done, turn off the car and hook the ESC wire back together. Take it for a drive and see if that feels better.

When using a timing gun with a dial, only use the first “V” groove on the timing tab. If the timing mark on the balancer doesn’t line up with the “V” groove on the timing tab, rotate the dial on the back of the gun until it does. Whatever number the dial is pointing to is where the advance is set BTDC.
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Old Feb 11, 2004 | 07:53 PM
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by AJ_92RS
The timing tab is mounted to the timing chain cover, right behind the water pump. If it isn't there, then it's either been removed or fell off, or someone's changed the timing chain cover.

Disconnect the coil wire from the distributor.

Once you find the timing mark on the balancer, crawl under the car and have a buddy tap the starter to rotate the engine until you see a groove on the balancer that's about 1/8"-3/16" deep. Use white paint or a white crayon to fill in the groove so it's easy to see.

Hook the coil wire back to the distributor, and unhook the ESC connector. It's located near the blower motor on the passenger side firewall. It'll be the brown wire sticking out of a black wire loom. Just separate the connector and leave it sit.

Attach the red connector to the positive ("+" or red) terminal on the battery, and the black connector to the negative ("-" or black) on the battery.

Hook up the timing light using the inductive pickup to the #1 sparkplug wire. It's the one that's on the driver's side of the engine, closest to the radiator.

Loosen the distributor hold down bolt just enough that it takes a little effort to be able to rotate the distributor either clockwise or counter clockwise.

Start the engine and aim the timing gun straight down between the water pump and the engine block. Look for the groove in the balancer.

A stock LO3 should be set at 0* BTDC. The groove should be lined up to the first "V" on the timing tab (the one closest to the driver's side). If not, rotate the distributor one way or the other until it is. At this point ignore the other "V' grooves.

Turn the engine off and tighten the dist. hold down bolt. Start the car and check the timing again to be sure the dist. didn't move while you were tightening the hold-down bolt. If so, correct it.

Once you're done, turn off the car and hook the ESC wire back together. Take it for a drive and see if that feels better.

When using a timing gun with a dial, only use the first “V” groove on the timing tab. If the timing mark on the balancer doesn’t line up with the “V” groove on the timing tab, rotate the dial on the back of the gun until it does. Whatever number the dial is pointing to is where the advance is set BTDC.
This is perfect. Follow this and you will be set. I would go with a bit more base though. Start off at 4 and drive around. If you hear know back it down. Some can get away with as much as 6 or 8 but they datalog to make sure they aren't getting any knock counts. You are pretty safe with 4* advanced.
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