Spun Bearing? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

lazy_flip · 05-22-2020, 09:35 PM

What do you guys think? The discoloration of the #2 con rod cap

jedi03 · 05-29-2020, 10:25 AM

spun would mean literally that...it spun out of original placement...I cant see the pic but if its is showing heat then theres definitely a lubrication issue...if its grooved then just need more frequent oil changes or many other factors

NukeKS14 · 05-29-2020, 08:33 PM

whatever the cause, it definitely looks heated AF. I wouldn't put the motor back together like that. I'd have the crank mic'd. It's possible that the clearances were too small there. Hard to say without cracking it open other than, yeah, it looks like it got really really hot from the looks of th rod cap and crank.

jedi03 · 06-02-2020, 12:42 PM

pull the cap and see what the bearing is, pic loaded today lol, also will give you chance to see what crank looks like...

05-22-2020, 09:35 PM	#1
lazy_flip Zilvia Member Join Date: Feb 2003 Location: San Diego Age: 36 Posts: 242 Trader Rating: (17) Feedback Score: 17 reviews	Spun Bearing? What do you guys think? The discoloration of the #2 con rod cap

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05-29-2020, 10:25 AM	#2
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,784 Trader Rating: (8) Feedback Score: 8 reviews	spun would mean literally that...it spun out of original placement...I cant see the pic but if its is showing heat then theres definitely a lubrication issue...if its grooved then just need more frequent oil changes or many other factors

05-29-2020, 08:33 PM	#3
NukeKS14 Zilvia Member Join Date: Apr 2019 Location: KS Posts: 221 Trader Rating: (1) Feedback Score: 1 reviews	whatever the cause, it definitely looks heated AF. I wouldn't put the motor back together like that. I'd have the crank mic'd. It's possible that the clearances were too small there. Hard to say without cracking it open other than, yeah, it looks like it got really really hot from the looks of th rod cap and crank.

06-02-2020, 12:42 PM	#4
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,784 Trader Rating: (8) Feedback Score: 8 reviews	pull the cap and see what the bearing is, pic loaded today lol, also will give you chance to see what crank looks like...