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rotorwrench · 11-07-2015, 12:11 PM

Technically, you can put #1 at any point you want as long as you follow the firing order after that and in the correct rotation. The problem is remembering where you put it. What ever reference you use will work and you will generally remember the reference you used or just follow the #1 back to the distributor to find it.

The zip tie head will stop the piston near top out then mark the crank pulley. You then back off and remove the zip tie. Rotate in proper direction past top center then reinstall the zip tie and back it off till it stops against the tie head again and mark the crank. Find the center between the two marks and you have TDC. It should be very close to the little dot on the crank pulley.

11-07-2015, 12:11 PM	#16
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,483	Re: how critical is TDC Technically, you can put #1 at any point you want as long as you follow the firing order after that and in the correct rotation. The problem is remembering where you put it. What ever reference you use will work and you will generally remember the reference you used or just follow the #1 back to the distributor to find it. The zip tie head will stop the piston near top out then mark the crank pulley. You then back off and remove the zip tie. Rotate in proper direction past top center then reinstall the zip tie and back it off till it stops against the tie head again and mark the crank. Find the center between the two marks and you have TDC. It should be very close to the little dot on the crank pulley. Last edited by rotorwrench; 11-07-2015 at 12:17 PM.