Main bearing color codes - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Daveyboy · 03-28-2021, 05:47 AM

Hey guys!

Rebuilding a sr20det s13 red top and have came across a little issue.
I live in Japan and ordered all parts from a parts store, they told me when I was ordering to check the color on the main bearings as there are like 5 I believe!

Then order the same color that the engine contains already, I stripped one main bearing to check what color what printed on the bearing, it was green so I ordered green!

I fitted them tonight but noticed the part numbers are different.

Does anyone have any idea why the colors are the same but part numbers are different?

Thanks!

PoorMans180SX · 03-28-2021, 08:23 AM

Parts numbers do change.

The real important thing here though is clearance. How much power is this engine going to make? If this is an engine that will see the racetrack, you're going to want to open up the bearing clearances. If it's just a daily/street car, you can probably get away with stock clearance specs unless you plan on making some decent power.

Daveyboy · 03-29-2021, 05:17 PM

Hello and thanks for the reply!

It won’t see the race track as far as I’m aware although the owner likes to go heavy on the gas and drift about from time to time ��.

I’m not sure I have a bore gauge, I do have a run out gauge and micro meter for sure though!

I guess I need to check the clearances to be sure!

Thanks again!

03-28-2021, 05:47 AM	#1
Daveyboy Join Date: Oct 2020 Location: Japan Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	Main bearing color codes Hey guys! Rebuilding a sr20det s13 red top and have came across a little issue. I live in Japan and ordered all parts from a parts store, they told me when I was ordering to check the color on the main bearings as there are like 5 I believe! Then order the same color that the engine contains already, I stripped one main bearing to check what color what printed on the bearing, it was green so I ordered green! I fitted them tonight but noticed the part numbers are different. Does anyone have any idea why the colors are the same but part numbers are different? Thanks!

03-28-2021, 08:23 AM	#2
PoorMans180SX Zilvia.net Advertiser Join Date: Nov 2005 Location: Michigan Age: 33 Posts: 5,431 Trader Rating: (16) Rides Gallery: PoorMans180SX Feedback Score: 16 reviews	Parts numbers do change. The real important thing here though is clearance. How much power is this engine going to make? If this is an engine that will see the racetrack, you're going to want to open up the bearing clearances. If it's just a daily/street car, you can probably get away with stock clearance specs unless you plan on making some decent power. __________________ Build: http://zilvia.net/f/showthread.php?t=643065 Friends don't let friends buy knock-offs.

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03-29-2021, 05:17 PM	#3
Daveyboy Join Date: Oct 2020 Location: Japan Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	Hello and thanks for the reply! It won’t see the race track as far as I’m aware although the owner likes to go heavy on the gas and drift about from time to time ��. I’m not sure I have a bore gauge, I do have a run out gauge and micro meter for sure though! I guess I need to check the clearances to be sure! Thanks again!