rod nock sound - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

juanishio · 10-18-2007, 10:29 PM

i was wondering if someone could help me out,i have an sr red top its making this weird knocking sound after its running for a couple minutes...do you guys think its something serious????

s13silvia123 · 10-18-2007, 10:32 PM

a video would be great. but where is it comming from.

Sileighty_85 · 10-19-2007, 07:14 AM

is it quite at idle and get louder and faster when you rev it?

tony96240sx · 10-19-2007, 08:48 AM

timing chain?

daryl337 · 10-19-2007, 08:51 AM

could be rod knock too....

Chrischeezer · 10-19-2007, 12:55 PM

it gets faster and faster no matter how high u rev?

street240 · 10-19-2007, 03:59 PM

You can find a auto stethoscope for about 15 bucks. It might take you an hour but you will be able to pinpoint it.

lbsam · 10-19-2007, 10:28 PM

I have an S14 SR and I have the same problem, except mine knocks at idle and it goes away once you rev past 2500 RPM.. I've done plenty of research and they say it has something to do with the VCT. But you say you have a red top SR so i dont know man..

WizardBlack · 10-19-2007, 10:36 PM

Could also be lifter tick, but some frame of reference or more information would be useful. Rod knock will usually be loudest if you get under the hood and hold the throttle to about 1krpm and blip it by hand quickly. The sudden accel will usually make rod knock louder for that split second. You will hear a hollow metal knock/thump. If the noise doesn't do that or it is just a high pitched ticking it's probably lifter tick.

10-18-2007, 10:29 PM	#1
juanishio Join Date: Oct 2007 Location: santa ana Posts: 25 Trader Rating: (0) Feedback Score: 0 reviews	rod nock sound i was wondering if someone could help me out,i have an sr red top its making this weird knocking sound after its running for a couple minutes...do you guys think its something serious????

10-18-2007, 10:32 PM	#2
s13silvia123 Post Whore! Join Date: May 2006 Location: where waldo is Age: 43 Posts: 3,267 Trader Rating: (16) Feedback Score: 16 reviews	a video would be great. but where is it comming from. __________________ 18g and 20g turbo users click on me http://zilvia.net/f/tech-talk/261219-18g-20g-turbo-users.html

10-19-2007, 07:14 AM	#3
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	is it quite at idle and get louder and faster when you rev it? __________________ 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 http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

10-19-2007, 08:51 AM	#5
daryl337 Zilvia Junkie Join Date: Aug 2005 Location: Pac NW Age: 39 Posts: 589 Trader Rating: (1) Feedback Score: 1 reviews	could be rod knock too.... __________________ This is my clever and witty signature.

10-19-2007, 12:55 PM	#6
Chrischeezer Zilvia FREAK! Join Date: Jul 2005 Location: earth Age: 41 Posts: 1,406 Trader Rating: (2) Feedback Score: 2 reviews	it gets faster and faster no matter how high u rev? __________________

10-19-2007, 08:48 AM	#4
tony96240sx Zilvia Member Join Date: Oct 2007 Location: NYC Age: 47 Posts: 172 Trader Rating: (0) Feedback Score: 0 reviews	timing chain?

10-19-2007, 03:59 PM	#7
street240 Zilvia Junkie Join Date: Jan 2007 Location: Rapid Posts: 502 Trader Rating: (0) Feedback Score: 0 reviews	You can find a auto stethoscope for about 15 bucks. It might take you an hour but you will be able to pinpoint it. __________________ The Gallo 24 would be a better motor for my skyline...But I am waiting on the swap dvd...

10-19-2007, 10:28 PM	#8
lbsam Zilvia Member Join Date: Sep 2007 Location: ▌║║║▌║││║ ║█ Posts: 209 Trader Rating: (12) Feedback Score: 12 reviews	I have an S14 SR and I have the same problem, except mine knocks at idle and it goes away once you rev past 2500 RPM.. I've done plenty of research and they say it has something to do with the VCT. But you say you have a red top SR so i dont know man..

10-19-2007, 10:36 PM	#9
WizardBlack Join Date: Sep 2007 Location: Ohio Age: 47 Posts: 30 Trader Rating: (0) Feedback Score: 0 reviews	Could also be lifter tick, but some frame of reference or more information would be useful. Rod knock will usually be loudest if you get under the hood and hold the throttle to about 1krpm and blip it by hand quickly. The sudden accel will usually make rod knock louder for that split second. You will hear a hollow metal knock/thump. If the noise doesn't do that or it is just a high pitched ticking it's probably lifter tick.