how to set motor to tdc without the head on? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

revolutionz_s13 · 06-26-2008, 12:41 PM

So, the head is off the motor, gonna put the new one on, and got a little excited and didnt set tdc before the head was taken off. now i cant manuall turn the crank with the head off...is the timing chain just jamming it or is there some sort of lock on the block that prevents you from turning the crank when the head is off? its and s13 sr20

murda-c · 06-26-2008, 12:46 PM

The timing chain could be bunched up, pull it up to simulate the head being there.

Otherwise it's just going to be hard to turn due to lack of lubrication.

revolutionz_s13 · 06-26-2008, 12:49 PM

so...thats kinda what I was thinking, wasnt using a breaker bar to try and turn it, just a ratchet. the motor just came in, who knows how long it was sitting and it seems pretty dry in there...so maybe i'll just pull the chain up, put a breaker bar on it and let it buck...

BiG MiKE86 · 06-26-2008, 12:56 PM

dont forget to match up the links on the chain if ur just planning on slappin the head back on

revolutionz_s13 · 06-26-2008, 02:08 PM

are you able to see the bottom link from the top with a flashlight does anyone know?(sorry, I'm at work, not in front of the motor)...

BiG MiKE86 · 06-26-2008, 07:59 PM

I wanna say no... im looking @ my engine now on a stand and the chain and guides block any view of that link - ur best bet is to remove the front cover and do it right

*fliprayzin240sx* · 06-26-2008, 08:45 PM

If you already have the head off, you might as well change the oil pump and double check the chain. You can turn the crank with out the head, just make sure the #1 cylinder is all the way to the top and the mark on the crank pulley is on the 2nd mark from the left.

KA-T_240 · 06-26-2008, 08:54 PM

^What they said.

Better safe then sorry and take the rest off and make sure its all lined up. While its apart, it is a really good idea to do some maintance.

06-26-2008, 12:46 PM	#2
murda-c Post Whore! Join Date: Jan 2007 Location: Montgomery County, MD Age: 37 Posts: 3,198 Trader Rating: (1) Feedback Score: 1 reviews	The timing chain could be bunched up, pull it up to simulate the head being there. Otherwise it's just going to be hard to turn due to lack of lubrication. __________________

06-26-2008, 12:56 PM	#4
BiG MiKE86 Nissanaholic! Join Date: Mar 2007 Location: Ft. Lauderdale Age: 38 Posts: 1,777 Trader Rating: (12) Feedback Score: 12 reviews	dont forget to match up the links on the chain if ur just planning on slappin the head back on __________________

06-26-2008, 07:59 PM	#6
BiG MiKE86 Nissanaholic! Join Date: Mar 2007 Location: Ft. Lauderdale Age: 38 Posts: 1,777 Trader Rating: (12) Feedback Score: 12 reviews	I wanna say no... im looking @ my engine now on a stand and the chain and guides block any view of that link - ur best bet is to remove the front cover and do it right __________________

06-26-2008, 08:45 PM	#7
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	If you already have the head off, you might as well change the oil pump and double check the chain. You can turn the crank with out the head, just make sure the #1 cylinder is all the way to the top and the mark on the crank pulley is on the 2nd mark from the left. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

06-26-2008, 08:54 PM	#8
KA-T_240 Nissanaholic! Join Date: Sep 2005 Location: Moorhead, MN Age: 38 Posts: 1,788 Trader Rating: (0) Feedback Score: 0 reviews	^What they said. Better safe then sorry and take the rest off and make sure its all lined up. While its apart, it is a really good idea to do some maintance. __________________

06-26-2008, 12:41 PM	#1
revolutionz_s13 Zilvia Member Join Date: Mar 2005 Location: North Dakota Posts: 175 Trader Rating: (3) Feedback Score: 3 reviews	how to set motor to tdc without the head on? So, the head is off the motor, gonna put the new one on, and got a little excited and didnt set tdc before the head was taken off. now i cant manuall turn the crank with the head off...is the timing chain just jamming it or is there some sort of lock on the block that prevents you from turning the crank when the head is off? its and s13 sr20

06-26-2008, 12:49 PM	#3
revolutionz_s13 Zilvia Member Join Date: Mar 2005 Location: North Dakota Posts: 175 Trader Rating: (3) Feedback Score: 3 reviews	so...thats kinda what I was thinking, wasnt using a breaker bar to try and turn it, just a ratchet. the motor just came in, who knows how long it was sitting and it seems pretty dry in there...so maybe i'll just pull the chain up, put a breaker bar on it and let it buck...

06-26-2008, 02:08 PM	#5
revolutionz_s13 Zilvia Member Join Date: Mar 2005 Location: North Dakota Posts: 175 Trader Rating: (3) Feedback Score: 3 reviews	are you able to see the bottom link from the top with a flashlight does anyone know?(sorry, I'm at work, not in front of the motor)...