How do I set engine timing to TDC?
Thread Starter
Rotary Freak
Joined: Jan 2004
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From: Northern California
How do I set engine timing to TDC?
I tried a week ago, but I didn't really get an answer that I understood. Could someone explain how I set my engine timing to top dead center? I have to remove my belts and I have to do this before I take off the pullies and belts.
i explained this in your other post i think...you had the microtech, right?
all you have to do is set the 'static' to 5* ATDC then put it on timing lock and time it to the leading (right) timing mark with a timing light. thats it.
you can look at 'static' as the value that it sees for timing, so if you set static to 5* and then time the engine to 5* (leading mark), it will be right on.
why do you have to do it before you take off the belts?
pat
ps if you arent the guy with the microtech, and you actually do want to set it to TDC for some strange reason, make another mark 5mm to the right of the leading mark and time it to that.
all you have to do is set the 'static' to 5* ATDC then put it on timing lock and time it to the leading (right) timing mark with a timing light. thats it.
you can look at 'static' as the value that it sees for timing, so if you set static to 5* and then time the engine to 5* (leading mark), it will be right on.
why do you have to do it before you take off the belts?
pat
ps if you arent the guy with the microtech, and you actually do want to set it to TDC for some strange reason, make another mark 5mm to the right of the leading mark and time it to that.
Thread Starter
Rotary Freak
Joined: Jan 2004
Posts: 2,116
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From: Northern California
Nah, I don't have a microtech. So I just make another mark on the crank pulley 5º after the leading mark and turn the crank pulley to that? I seriously do not want to f my engine up, so if you could explain it as plainly as possible, that'd be great. Thanks.
yeah. the pulley is 360mm in circumference, so 5mm=5*
a ruler isnt the best tool, since the thing youre measureing is round, but it will work, just try to approximate the curve as best you can.
pat
a ruler isnt the best tool, since the thing youre measureing is round, but it will work, just try to approximate the curve as best you can.
pat
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Thread Starter
Rotary Freak
Joined: Jan 2004
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From: Northern California
Err rather the leading mark is the yellow one. I have it set to that now. So just 5mm along that pulley? Simple enough.
Last edited by snub disphenoid; Oct 2, 2004 at 07:19 PM.
Thread Starter
Rotary Freak
Joined: Jan 2004
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From: Northern California
Originally Posted by patman
no. 5mm to the right of the yellow. it should go red, yellow, 5mm, yours.
if i might ask, why the heck would you want to set it to TDC?
pat
if i might ask, why the heck would you want to set it to TDC?
pat
Thanks a ton for the help, though, you very thoroughly answered the question.
SUPERnaturally Aspirated
Joined: Dec 2003
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From: Long Island
yeah the instructions say
"B. Set engine timing to top dead center and remove crank pulley. "
which plug wire gets the pickup when you are setting the timing?
and when rotating the cas which direction is advance and which is retard?
also since by this step in the instructions you have already stripped you motor, that this is the timing while cranking the motor? or am i just clueless about timing rotarys
"B. Set engine timing to top dead center and remove crank pulley. "
which plug wire gets the pickup when you are setting the timing?
and when rotating the cas which direction is advance and which is retard?
also since by this step in the instructions you have already stripped you motor, that this is the timing while cranking the motor? or am i just clueless about timing rotarys
Last edited by shiftnmadkwik; Oct 12, 2004 at 08:30 AM.
that is retarded. you cant set timing if the engine doesnt run. it will be way wrong, not to mention that retarading it 5 degrees is lame anyway.
to set timing u use the L1 wire. i do nt remember which way is which..should be obvious when you do it.
are there timing marks on the pulley they give you? if not, thats lame too. i thought atkins was better than this.
pat
to set timing u use the L1 wire. i do nt remember which way is which..should be obvious when you do it.
are there timing marks on the pulley they give you? if not, thats lame too. i thought atkins was better than this.
pat
SUPERnaturally Aspirated
Joined: Dec 2003
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From: Long Island
no marks, you have to transfer your own.
i transfered the leading yellow which is supposed to be at 5deg atdc
the trailing red is supposed to be at 20deg atdc
according to the fsm.
i guess i will mark the cas, and then rotate it in the proper direction so that it retards 1/3 of the distance between the red and yellow. that should pull out 5deg
however who knows since i will be pulling out timing at 1300 rpms rather than 750. maybe i should just mark the cas, give it a lil twist and just hope theres no pings
wouldnt you want it 5mm to the left? seems like if you want to retard it 5 degrees, youd want timing to be at 10atdc if the red is at 20 and the yellow at 5 wouldnt that make the new setting somewhere between?
i transfered the leading yellow which is supposed to be at 5deg atdc
the trailing red is supposed to be at 20deg atdc
according to the fsm.
i guess i will mark the cas, and then rotate it in the proper direction so that it retards 1/3 of the distance between the red and yellow. that should pull out 5deg
however who knows since i will be pulling out timing at 1300 rpms rather than 750. maybe i should just mark the cas, give it a lil twist and just hope theres no pings
wouldnt you want it 5mm to the left? seems like if you want to retard it 5 degrees, youd want timing to be at 10atdc if the red is at 20 and the yellow at 5 wouldnt that make the new setting somewhere between?
Last edited by shiftnmadkwik; Oct 12, 2004 at 11:04 AM.
yes, TDC is 5* to the right of the yellow mark...i dunno why i sadi retarding it..guess i am retarded myself. but thats even more confusing... why the **** would they advance the timing??
i wish i had a set of those directions to read...seems totally idiotic to me the way they are doing it.... advancing the timing when adding boost is not cool. and actually, you dont ever want timing to be right at TDC.
if you are gonna follow their directions, just do it the way they say...set the timing to TDC by putting it 5mm to the right of the leading mark on the stock pulley, then switch to their pulley and dont worry about it anymore..
if you arent gonna follow their directions, then you gotta figure it all out on your own starting from scratch..
pat
i wish i had a set of those directions to read...seems totally idiotic to me the way they are doing it.... advancing the timing when adding boost is not cool. and actually, you dont ever want timing to be right at TDC.
if you are gonna follow their directions, just do it the way they say...set the timing to TDC by putting it 5mm to the right of the leading mark on the stock pulley, then switch to their pulley and dont worry about it anymore..
if you arent gonna follow their directions, then you gotta figure it all out on your own starting from scratch..
pat
SUPERnaturally Aspirated
Joined: Dec 2003
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From: Long Island
they are online,
http://www.camdensuperchargers.com/index.php?pag=12
yeah i thought that if it was lined up then you are at 5 atdc so youd advance the timing by going to tdc
i will call gary at camden and see what he meant
http://www.camdensuperchargers.com/index.php?pag=12
yeah i thought that if it was lined up then you are at 5 atdc so youd advance the timing by going to tdc
i will call gary at camden and see what he meant
Thread Starter
Rotary Freak
Joined: Jan 2004
Posts: 2,116
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From: Northern California
Now that I think about it all they meant was to set mark the pulley and set it to top dead center, then remove it, transfer the marks, and put the new one on. That's not really changing anything, it's just a saftey measure so that you put the new crank pulley on at just the right point. Thankfully I haven't got around to actually doing the REAL timing adjustments, so hopefully there's no harm done there.
ya know....now that i actually read these instructions, i dont think they are talking about ignition timing. they just want you to turn the engine to TDC for the installation. now that i look at it, im actually pretty impressed with the completeness of that kit.
pat
pat
