sr20 timing chain question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nate_drake · 06-21-2009, 07:48 PM

hey
for a s13 sr20
got a question about my timing chain hitting the guide at the top inbetween the 2 cam sprockets. i just replaced the head gasket on my car and when i spin my crank with a ratchet the chain sometimes jumps a little at the top and hits the guide when i let go of the ratchet.... i can see the chain tensioner go in a little too when this happens..

is this normal? i cant remember it doing this before maybe it did..

nate_drake · 06-22-2009, 06:09 PM

YouTube - sr20 timing chain problem

all i did was change cams.... not sure why its doin that

S13Dreamer · 06-24-2009, 09:08 AM

Looks normal to me. Mine did that too when I manually cranked it. It's been problem free for about a year and half now. ::knock on wood::

Sileighty_85 · 06-24-2009, 10:54 AM

the tensonier applies tension with oil pressure

plus the intake cam is snapping when the cam lobe slides off the rocker arm
when the engine is running its still gonna be pulling the chain and cams and keep them from snapping

Its fine and normal

nate_drake · 06-24-2009, 02:53 PM

ok awesome. thanks guys just trying to make sure, still learning!

onehundredoctane · 06-24-2009, 03:10 PM

my engine has never started up and ran since coming back from the machine shop, however, just pouring oil in it and hitting the starter does that same thing you have going on there. Don't worry about it.

06-21-2009, 07:48 PM	#1
nate_drake Join Date: Jan 2009 Location: ontario Age: 33 Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	sr20 timing chain question hey for a s13 sr20 got a question about my timing chain hitting the guide at the top inbetween the 2 cam sprockets. i just replaced the head gasket on my car and when i spin my crank with a ratchet the chain sometimes jumps a little at the top and hits the guide when i let go of the ratchet.... i can see the chain tensioner go in a little too when this happens.. is this normal? i cant remember it doing this before maybe it did..

06-24-2009, 09:08 AM	#3
S13Dreamer Leaky Injector Join Date: Dec 2002 Location: Holmdel, NJ Posts: 140 Trader Rating: (2) Feedback Score: 2 reviews	Looks normal to me. Mine did that too when I manually cranked it. It's been problem free for about a year and half now. ::knock on wood:: __________________

06-24-2009, 10:54 AM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	the tensonier applies tension with oil pressure plus the intake cam is snapping when the cam lobe slides off the rocker arm when the engine is running its still gonna be pulling the chain and cams and keep them from snapping Its fine and normal __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online #/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

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06-22-2009, 06:09 PM	#2
nate_drake Join Date: Jan 2009 Location: ontario Age: 33 Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	YouTube - sr20 timing chain problem all i did was change cams.... not sure why its doin that

06-24-2009, 02:53 PM	#5
nate_drake Join Date: Jan 2009 Location: ontario Age: 33 Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	ok awesome. thanks guys just trying to make sure, still learning!

06-24-2009, 03:10 PM	#6
onehundredoctane Post Whore! Join Date: Oct 2006 Location: Greensborough, NC Posts: 2,783 Trader Rating: (3) Feedback Score: 3 reviews	my engine has never started up and ran since coming back from the machine shop, however, just pouring oil in it and hitting the starter does that same thing you have going on there. Don't worry about it.