noisy motor need knowledge - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Habibi240 · 10-29-2015, 09:44 AM

Let me borrow your ears for a second it's coming from the front is it timing chain slap ?

http://youtu.be/CqtJiU8f1NY

Mitsubayati · 10-29-2015, 11:01 AM

Sounds more like a bad valve. What does it sound like when you rev up? You should post a video of it being revved. Not just quick revs.

Habibi240 · 10-29-2015, 11:20 AM

I tap the throttle and its responding late and if I rev it up it wants to stall

Habibi240 · 10-29-2015, 11:37 AM

It sounds worse after revving it up but here's the start up and rev

http://youtu.be/Rb6eflgYmGI
http://youtu.be/ossf9DPQf3E

JM216S14 · 10-29-2015, 11:40 AM

who rebuilt it? It does sound like a valve..

Habibi240 · 10-29-2015, 11:44 AM

A buddy of mine did the assembly and took it to a shop nearby for the machining . Fresh valve seals but valves were reused ..
said they looked good

Bottom end is wiseco 87 9.0:1 Pistons
Factory rods
Clevite main and rod bearings

Habibi240 · 10-29-2015, 11:47 AM

It sounded fine the last 200 miles but I just replaced my cams (stock) because previous owner neglected oil and cams worn down a lot from oil squirters being clogged up

Habibi240 · 10-30-2015, 07:57 AM

Could that be from bad timing ? I double checked the timing but idk . I was wondering if there could be too much slack on the exhaust side of the chain

Kingtal0n · 10-30-2015, 12:34 PM

Clevites and clogged oil squirters... the engine is trash.

Rebuilt sr20det rarely make the 1000 mile mark. Very important to keep them doctor clean when opening it up... clogged oil squirters is very common on engines rebuilt poorly due to lack of cleanliness and marks the end of the engine. You wipe a cam lobe and send metal through the engine its almost always gg.

Habibi240 · 10-30-2015, 01:57 PM

It was clogged before the rebuild and I ddnt realize the cams were worn till it was back in the car but that would clog up oil gallery's yeah? The entire duration of the cams were worn maybe half a mm

Habibi240 · 10-30-2015, 01:58 PM

The squirters are flowing now I cleaned em during the rebuild

Habibi240 · 11-17-2015, 10:01 AM

The tensioner should be stationary after it moved out locked in place correct? Mine is not trying to upload video

10-29-2015, 09:44 AM	#1
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	noisy motor need knowledge Let me borrow your ears for a second it's coming from the front is it timing chain slap ? http://youtu.be/CqtJiU8f1NY

10-29-2015, 11:01 AM	#2
Mitsubayati Zilvia FREAK! Join Date: Aug 2007 Location: The Dro Posts: 1,424 Trader Rating: (18) Feedback Score: 18 reviews	Sounds more like a bad valve. What does it sound like when you rev up? You should post a video of it being revved. Not just quick revs. __________________

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10-29-2015, 11:20 AM	#3
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	I tap the throttle and its responding late and if I rev it up it wants to stall

10-29-2015, 11:37 AM	#4
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	It sounds worse after revving it up but here's the start up and rev http://youtu.be/Rb6eflgYmGI http://youtu.be/ossf9DPQf3E

10-29-2015, 11:40 AM	#5
JM216S14 Zilvia Junkie Join Date: Apr 2007 Location: Over the gate Posts: 419 Trader Rating: (3) Feedback Score: 3 reviews	who rebuilt it? It does sound like a valve..

10-29-2015, 11:44 AM	#6
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	A buddy of mine did the assembly and took it to a shop nearby for the machining . Fresh valve seals but valves were reused .. said they looked good Bottom end is wiseco 87 9.0:1 Pistons Factory rods Clevite main and rod bearings

10-29-2015, 11:47 AM	#7
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	It sounded fine the last 200 miles but I just replaced my cams (stock) because previous owner neglected oil and cams worn down a lot from oil squirters being clogged up

10-30-2015, 07:57 AM	#8
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	Could that be from bad timing ? I double checked the timing but idk . I was wondering if there could be too much slack on the exhaust side of the chain

10-30-2015, 12:34 PM	#9
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	Clevites and clogged oil squirters... the engine is trash. Rebuilt sr20det rarely make the 1000 mile mark. Very important to keep them doctor clean when opening it up... clogged oil squirters is very common on engines rebuilt poorly due to lack of cleanliness and marks the end of the engine. You wipe a cam lobe and send metal through the engine its almost always gg.

10-30-2015, 01:57 PM	#10
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	It was clogged before the rebuild and I ddnt realize the cams were worn till it was back in the car but that would clog up oil gallery's yeah? The entire duration of the cams were worn maybe half a mm

10-30-2015, 01:58 PM	#11
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	The squirters are flowing now I cleaned em during the rebuild

11-17-2015, 10:01 AM	#12
Habibi240 Zilvia Member Join Date: Aug 2015 Location: Chicago Age: 29 Posts: 228 Trader Rating: (0) Feedback Score: 0 reviews	The tensioner should be stationary after it moved out locked in place correct? Mine is not trying to upload video