Advanced Timing (should i???)
04-21-08, 10:50 AM
#27
Sure... it's really easy to adjust. Take your car around the block to get it to normal temperature. Open hood. loosen hold down nut for CAS - its between the alternator and the AC unit - has a black flat cap on the top and goes down into the front cover theres a nut that holds it down & keeps it from turning.
Now is a good time to hook up your timing light to the #1 leading spark plug wire. Aim the light at the top of the main pulley at the bottom of the front cover. You should see a little pointer on the cover and a yellow and red mark on the pulley. Stock timing would show the yellow mark lined up with the pointer when the timing light pickup is on the #1 leading plug wire & with the pickup on the #1 trailing plug wire the red mark on the pulley will be lined up with the pointer. Please note that your idle needs to be under 1000 rpms or else the ECU will have advanced the timing already. If your idle is a little high you can turn the CAS and see if the idle drops down enough for a good reading.
Now after getting back to stock... you want to advance your timing its just a matter of turning the CAS. Your idle should increase some as you turn the CAS. Keep in mind that 1 MM = 1 degree of timing ON THE PULLEY indicator marks. Don't get all crazy with it or you might be sorry!! The distance between the red and yellow marks is 15 MM so that is a good reference point - half the distance would be 7.5 degrees advanced. If you revv up the engine with the timing light pointed at the marks you should see the ECU advance the timing shown by the marks on the pulley changing relative positions away from the pointer. When your done tighten the hold down nut on the CAS.
If you don't have a timing light you could do it by "ear". Rotate the CAS until the idle drops down low but still idles - that should be close to stock if you are running decent with no vacuum leaks. Slowly rotate the CAS until the rpms start to rise - tighten the hold down nut & your done. I would recommend buying a timing light - if you get one with the added timing advance degree adjustment it would help out alot. I need to check mine again.... I think I went to far last night. I hadn't measured the distance between the marks until now...
Ramses666
Now is a good time to hook up your timing light to the #1 leading spark plug wire. Aim the light at the top of the main pulley at the bottom of the front cover. You should see a little pointer on the cover and a yellow and red mark on the pulley. Stock timing would show the yellow mark lined up with the pointer when the timing light pickup is on the #1 leading plug wire & with the pickup on the #1 trailing plug wire the red mark on the pulley will be lined up with the pointer. Please note that your idle needs to be under 1000 rpms or else the ECU will have advanced the timing already. If your idle is a little high you can turn the CAS and see if the idle drops down enough for a good reading.
Now after getting back to stock... you want to advance your timing its just a matter of turning the CAS. Your idle should increase some as you turn the CAS. Keep in mind that 1 MM = 1 degree of timing ON THE PULLEY indicator marks. Don't get all crazy with it or you might be sorry!! The distance between the red and yellow marks is 15 MM so that is a good reference point - half the distance would be 7.5 degrees advanced. If you revv up the engine with the timing light pointed at the marks you should see the ECU advance the timing shown by the marks on the pulley changing relative positions away from the pointer. When your done tighten the hold down nut on the CAS.
If you don't have a timing light you could do it by "ear". Rotate the CAS until the idle drops down low but still idles - that should be close to stock if you are running decent with no vacuum leaks. Slowly rotate the CAS until the rpms start to rise - tighten the hold down nut & your done. I would recommend buying a timing light - if you get one with the added timing advance degree adjustment it would help out alot. I need to check mine again.... I think I went to far last night. I hadn't measured the distance between the marks until now...
Ramses666
04-21-08, 04:51 PM
#28
Ok... I went for a ride to the beer store & it had alot more "bite" - quicker throttle response not "boggy" and idled right at 750 rpm's. I noticed it took off really good and wanted to squeal the tires MUCH EASIER going around the corner. I could only give it maybe 1/2 throttle instead of 3/4. It felt "sharp" instead of "dull" and I definetly had faster acceleration. I hooked up my timing light when I got back to the house and I would guess I had maybe 7 or 8 degrees advanced timing at 750 rpms. It started good and held a great idle. I'm gonna leave it where it is now for a few days & see how I like it, but I think the car finally drives like it should.
Ramses666
Ramses666
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