SR bearing clearances - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sunnys14 · 07-18-2007, 11:42 PM

my s13 blacktop spun bearing so im going to get new bearings machined. do rwd SR's have the same bearings and bearing clearances as a fwd SR?

crazyikimasho · 07-18-2007, 11:46 PM

Quote:

Originally Posted by sunnys14

my s13 blacktop spun bearing so im going to get new bearings machined. do rwd SR's have the same bearings and bearing clearances as a fwd SR?

They should be the same. But... just to be sure check online FSMs for actual specs. This is one area you want to be very precise.

In case you're not sure where to start searching for FSMs
heres a start... http://www.zeroyon.com/index/content/view/24/47

sunnys14 · 07-18-2007, 11:59 PM

i got the rwd SR fsm already, but i just dont know the clearances for a FWD SR...

Mazworx · 07-19-2007, 06:49 AM

I always loosen them up from factory. Especially if you plan on making more power than factory. We also machine oil grooves in the mains and then run some good race bearings.

steve shadows · 07-19-2007, 09:42 AM

Quote:

Originally Posted by Mazworx

I always loosen them up from factory. Especially if you plan on making more power than factory.

good point right here.

The bearings lifetime goes down, but you probably wont be planning on racing the car for more than 20,000 miles straight anyways. at least i wouldnt without a tear down and inspection.

lonelydrifter · 07-19-2007, 11:51 AM

If you are replacing bearings you have to take the engine apart so while its apart just measure the clearances and order the appropriate bearings. Don't go by color markings on OEM bearings. Clevite FTW!!

Dousan_PG · 07-19-2007, 11:54 AM

oem is fine
ive seen a few clevite problems thru freshally of people's rebuilds
oem is 100% fine and works good.

Andrew@9K · 03-11-2011, 10:23 AM

ACL H series has different part numbers for the SR20DE and DET I believe they are the same sizes but what I did notice is that the DET bearing has a few more oil holes in it and 270 degree oiling. Good engine bearings arent really gonna make you anymore power but what your paying for is the added protection from wear thanks to the coatings they use. OEM is great too FYI

hope this help -Andrew

These have given me great results in previous builds

Andrew@9K · 03-11-2011, 10:26 AM

btw did you spin a main bearing or a rod bearing?

japslapsilvia · 03-11-2011, 10:31 AM

this thread is like 4 years old...

Andrew@9K · 03-11-2011, 10:58 AM

whoa! my bad i didnt check the dates thanks for the heads up bro

07-18-2007, 11:42 PM	#1
sunnys14 Zilvia FREAK! Join Date: Mar 2006 Location: a land far far away... Posts: 1,549 Trader Rating: (19) Feedback Score: 19 reviews	SR bearing clearances my s13 blacktop spun bearing so im going to get new bearings machined. do rwd SR's have the same bearings and bearing clearances as a fwd SR?

07-19-2007, 11:54 AM	#7
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 46 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	oem is fine ive seen a few clevite problems thru freshally of people's rebuilds oem is 100% fine and works good. __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

07-18-2007, 11:59 PM	#3
sunnys14 Zilvia FREAK! Join Date: Mar 2006 Location: a land far far away... Posts: 1,549 Trader Rating: (19) Feedback Score: 19 reviews	i got the rwd SR fsm already, but i just dont know the clearances for a FWD SR...

07-19-2007, 06:49 AM	#4
Mazworx Leaky Injector Join Date: May 2004 Location: Orlando, FL Posts: 81 Trader Rating: (1) Feedback Score: 1 reviews	I always loosen them up from factory. Especially if you plan on making more power than factory. We also machine oil grooves in the mains and then run some good race bearings.

07-19-2007, 11:51 AM	#6
lonelydrifter Zilvia Member Join Date: Sep 2006 Location: florida Age: 39 Posts: 270 Trader Rating: (0) Feedback Score: 0 reviews	If you are replacing bearings you have to take the engine apart so while its apart just measure the clearances and order the appropriate bearings. Don't go by color markings on OEM bearings. Clevite FTW!!

03-11-2011, 10:23 AM	#8
Andrew@9K Join Date: Feb 2011 Location: Chino Hills Posts: 38 Trader Rating: (0) Feedback Score: 0 reviews	ACL H series has different part numbers for the SR20DE and DET I believe they are the same sizes but what I did notice is that the DET bearing has a few more oil holes in it and 270 degree oiling. Good engine bearings arent really gonna make you anymore power but what your paying for is the added protection from wear thanks to the coatings they use. OEM is great too FYI hope this help -Andrew These have given me great results in previous builds

03-11-2011, 10:26 AM	#9
Andrew@9K Join Date: Feb 2011 Location: Chino Hills Posts: 38 Trader Rating: (0) Feedback Score: 0 reviews	btw did you spin a main bearing or a rod bearing?

03-11-2011, 10:58 AM	#11
Andrew@9K Join Date: Feb 2011 Location: Chino Hills Posts: 38 Trader Rating: (0) Feedback Score: 0 reviews	whoa! my bad i didnt check the dates thanks for the heads up bro