Timing

[BiGGinZ]

I am changing the timing belt on my car. I think the timing is already off so I am replacing the belt because it looks bad along with the idler pulley. Now I know I need to set the car at 0*TDC and then change the timing to 10*TDC, I just don't understand on how to set the timing to 10*TDC. This is the first time I have done timing on a car so sorry if it sounds stupid I just really don't want to mess this up. I did a search and read what I could find on timing but didn't see anything on how to set your timing to 10*tdc. Maybe I missed a thread or link, if so post that link and I am sorry for wasting everyones time. Thanks for your help.

BiGGinZ

 

[mkIIIman089]

(after everything is reassembled, with CPS bolt loose)

-Jump Te1 and E1 in the diagnostic block (locks in timing, no ECU input)
-Clamp timing light pickup to #1 plug wire.
-start engine
-point timing light at the scale on the lower timing cover
-find where the notch in the crank pulley is "flashing" on the scale
-turn the CPS (slowly), while you watch where the notch in the pulley is, in whichever it needs to go until the pulley notch is flashing on the 10.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=20

Oh, and don't forget to take the jumper back out when your done!

 

[Mk3runner]

I think you should just have it at 0* TDC and call it cool. oh yeah make sure you have your cams zeroed out as well.

 

[SevenMKIII]

What's goin on. You're right on getting the timing belt, just make sure you aren't off even a tooth otherwise it won't work right. After getting the timing belt on jumper the diag. box and get your timing light on. Clamp the spark plug clamp over either #1 or #6, same spark, positive wire to battery, negative wire to battery, start the motor and see where your timing is, should be at 0* BTDC. Now, loosen the CPS bolt and turn it until you reach 10-12* BTDC. Tighten it down and recheck the timing. You're good to go!

More detailed link: http://www.cygnusx1.net/Supra/TechTips/setting_timing.aspx

-Chris

edit: you guys beat me to the punch...

 

[themadhatter]

tsrm will tell you everything you need to know http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=22

 

[Mk3runner]

yea we did, although I did forget about ignition timing.. but that was caught by mkIIIman089.

 

[BiGGinZ]

Thanks for the quick responses everyone. Another dumb question will the cam sensor only move one way? When you guys say turn it until it hits 10*BTDC I want to make sure I dont mess this up.

 

[Mk3runner]

well the cps has a notch where you can move it either way. well if installed right.

 

[BiGGinZ]

well the cps has a notch where you can move it either way. well if installed right.

I haven't touched the cps, still waiting on my timing belt, light, and idler pulley. So which way do I turn the cps I guess is what I should have asked.

 

[SevenMKIII]

It depends on how accurate it was put on. When I installed mine I made sure it was as close to dead in the middle as I could get it so I could allow myself enough room to adjust it. While timing it, I turned mine about 1cm clockwise to reach about 10-11* BTDC. Everyone's motor is different though. Just when the timing light is blinking, move it a little one way, if its going the wrong way turn it the other way.

-Chris

 

[BiGGinZ]

It depends on how accurate it was put on. When I installed mine I made sure it was as close to dead in the middle as I could get it so I could allow myself enough room to adjust it. While timing it, I turned mine about 1cm clockwise to reach about 10-11* BTDC. Everyone's motor is different though. Just when the timing light is blinking, move it a little one way, if its going the wrong way turn it the other way.

-Chris

Okay will do, thanks for your help.

 

[shaeff]

I think you should just have it at 0* TDC and call it cool. oh yeah make sure you have your cams zeroed out as well.

no. having it at 0* is going to make the car run like a bag of crap. that's only the base timing you're talking about. (cams and crank).

we're talking about ignition timing. just listen to mkiiiman089. he's spot on.

-shaeff