SR20DET Definitive Timing Chain Rattle Fix Thread.... No KA's!...No Noobs - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

redsx13 · 02-10-2009, 01:02 AM

I know, I know, we have all herd it a million times, but this time we are looking for a clear definitive answer for the timing chain rattle on an SR20DET. Damm Nissans and their noisy timing chain guides. Anyway, here is my question for Zilvia.

Through a good amount of searching i have come up with a few answers for the timing chain rattle on an SR, many of which involve replacing the tensioner and sometimes even the complete chain. Which can be a very time consuming and costly job. even more disappointing is the fact that many SR owners who have replaced timing chain/tensioner report that it did not completely fix their rattling problem.

Most of us with KA24 experience know that fixing the same rattle on that motor is as simple as removing the top and side timing chain guides, but will the same process work on an SR? Is it safe? In my search for this question i came up with a lot of useless answers and mixed results.

In this thread we are not looking for your opinions, we are looking for first hand experience with this problem, what has been done to fix it, and most importantly, has it worked.

smelly240 · 02-10-2009, 08:46 AM

the nissan tech bulletin for a sr says to remov the top guide... when a tech removs the valve cover its recommended to remove it (its 2 measly bolts).

mine was gently tinging - then i remove that guide - and it made slightly less noise - i replaced the tensioner (2nd time) and it went away.

jakerps13 · 02-10-2009, 09:57 AM

I'm looking at shopkey right now and it only says to remove the upper guide on the KA's.

Here's what I found for the SR's

After a night soak down, upon startup chain rattle is heard.

Fix: replace with OEM redesigned tensioner Part number: 13070-53J02

CourtesyParts :: TENS ASS-C

That's all I can find for SR shat.

In all honesty I removed mine last year just because I remembered reading to pull them off. After I took the cover off this winter there are some hits from the chain on my valve cover.

Sileighty_85 · 02-10-2009, 10:41 AM

ive never heard of the SR having this problem.

i still have have my Upper guide on, but i also installed the revised chain guides.
*the stock one is full plasic, the revised one is reinfoced

redsx13 · 02-24-2009, 08:15 PM

Here is a good thread for anyone looking for answers (keep in mind that there are KA's in here too)...

http://zilvia.net/f/s-chassis/240842...s-cracked.html

R3cK · 06-29-2013, 03:24 AM

Video of the noise:

https://www.youtube.com/watch?v=ra6q9qCMUbI

Upper guide removed - slight scratches visible
chain also got some slight scratches

New chain tensioner ordered.
update status after i replaced it.

Old Tensioner VS New Tensioner
(new one got some finer teeth and looking generally "stronger" or thicker, seems to be taller but its just the bump thing on the outside)

By the way. The chain tensioner needs oil pressure to work fine.
So better check your oil pressure first.

PROBLEM SOLVED: new tensioner installed + upper mount deinstalled
http://www.youtube.com/watch?v=Wlh010XCos8

Kingtal0n · 06-29-2013, 08:19 PM

1. Use a high quality tensioner.
2. I like to keep the upper chain guide on
3. often the startup "tinkling" noise you hear on sr20 engines is actually the water pump

codyace · 06-29-2013, 09:32 PM

Quote:

Originally Posted by R3cK

Video of the noise:

https://www.youtube.com/watch?v=ra6q9qCMUbI

Upper guide removed - slight scratches visible
chain also got some slight scratches

New chain tensioner ordered.
update status after i replaced it.

Old Tensioner VS New Tensioner
(new one got some finer teeth and looking generally "stronger" or thicker, seems to be taller but its just the bump thing on the outside)

By the way. The chain tensioner needs oil pressure to work fine.
So better check your oil pressure first.

The B15 Tensioner is the way to fly for sure. Easy to find, and a 'must' for anyone rebuilding their engine.

R3cK · 07-03-2013, 01:12 PM

PROBLEM SOLVED! look edited post ^up^

02-10-2009, 01:02 AM	#1
redsx13 Zilvia Junkie Join Date: Jan 2009 Location: Agoura Hills, Ca Age: 31 Posts: 572 Trader Rating: (6) Feedback Score: 6 reviews	SR20DET Definitive Timing Chain Rattle Fix Thread.... No KA's!...No Noobs I know, I know, we have all herd it a million times, but this time we are looking for a clear definitive answer for the timing chain rattle on an SR20DET. Damm Nissans and their noisy timing chain guides. Anyway, here is my question for Zilvia. Through a good amount of searching i have come up with a few answers for the timing chain rattle on an SR, many of which involve replacing the tensioner and sometimes even the complete chain. Which can be a very time consuming and costly job. even more disappointing is the fact that many SR owners who have replaced timing chain/tensioner report that it did not completely fix their rattling problem. Most of us with KA24 experience know that fixing the same rattle on that motor is as simple as removing the top and side timing chain guides, but will the same process work on an SR? Is it safe? In my search for this question i came up with a lot of useless answers and mixed results. In this thread we are not looking for your opinions, we are looking for first hand experience with this problem, what has been done to fix it, and most importantly, has it worked.

02-10-2009, 08:46 AM	#2
smelly240 Nissanaholic! Join Date: Oct 2006 Location: Philaburbia Age: 43 Posts: 2,137 Trader Rating: (4) Feedback Score: 4 reviews	the nissan tech bulletin for a sr says to remov the top guide... when a tech removs the valve cover its recommended to remove it (its 2 measly bolts). mine was gently tinging - then i remove that guide - and it made slightly less noise - i replaced the tensioner (2nd time) and it went away. __________________ HREs on a S13 - check, 6262 - check, Girlfriend.... - nope

02-10-2009, 09:57 AM	#3
jakerps13 Zilvia Member Join Date: Nov 2003 Location: Appleton, WI Age: 37 Posts: 171 Trader Rating: (0) Feedback Score: 0 reviews	I'm looking at shopkey right now and it only says to remove the upper guide on the KA's. Here's what I found for the SR's After a night soak down, upon startup chain rattle is heard. Fix: replace with OEM redesigned tensioner Part number: 13070-53J02 CourtesyParts :: TENS ASS-C That's all I can find for SR shat. In all honesty I removed mine last year just because I remembered reading to pull them off. After I took the cover off this winter there are some hits from the chain on my valve cover. __________________ Lower than a pornstar's morals.

02-10-2009, 10:41 AM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	ive never heard of the SR having this problem. i still have have my Upper guide on, but i also installed the revised chain guides. *the stock one is full plasic, the revised one is reinfoced __________________ 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

06-29-2013, 03:24 AM	#6
R3cK Zilvia Member Join Date: Nov 2011 Location: bavaria Posts: 159 Trader Rating: (0) Feedback Score: 0 reviews	Video of the noise: https://www.youtube.com/watch?v=ra6q9qCMUbI Upper guide removed - slight scratches visible chain also got some slight scratches New chain tensioner ordered. update status after i replaced it. Old Tensioner VS New Tensioner (new one got some finer teeth and looking generally "stronger" or thicker, seems to be taller but its just the bump thing on the outside) By the way. The chain tensioner needs oil pressure to work fine. So better check your oil pressure first. PROBLEM SOLVED: new tensioner installed + upper mount deinstalled http://www.youtube.com/watch?v=Wlh010XCos8 Last edited by R3cK; 07-03-2013 at 01:13 PM.. Reason: PROBLEM SOLVED mudafocka!

02-24-2009, 08:15 PM	#5
redsx13 Zilvia Junkie Join Date: Jan 2009 Location: Agoura Hills, Ca Age: 31 Posts: 572 Trader Rating: (6) Feedback Score: 6 reviews	Here is a good thread for anyone looking for answers (keep in mind that there are KA's in here too)... http://zilvia.net/f/s-chassis/240842...s-cracked.html

06-29-2013, 08:19 PM	#7
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,646 Trader Rating: (17) Feedback Score: 17 reviews	1. Use a high quality tensioner. 2. I like to keep the upper chain guide on 3. often the startup "tinkling" noise you hear on sr20 engines is actually the water pump __________________ 5.3/4l80e/turbo 240sx playthrough: https://tinyurl.com/turbo240

07-03-2013, 01:12 PM	#9
R3cK Zilvia Member Join Date: Nov 2011 Location: bavaria Posts: 159 Trader Rating: (0) Feedback Score: 0 reviews	PROBLEM SOLVED! look edited post ^up^

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