Rod Bearings/Main Bearings - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Fa20Toybaru · 06-01-2021, 11:30 AM

So I am now building the block. I finished the valvetrain, trans, and suspension. In my search for information, i have come up short on how to access what bearing sizes i would need. I am going to be using the stock crankshaft. I found that King makes some pretty good bearings that last but im stuck looking at different sizes.
I am not going to modify the stock crank, so my question is the following. Where can i find the dimensions for the stock OEM bearings to compare? Also, has anyone used the King XPG bearings on a stock crank? If so what size did you use to provide the correct lubrication and avoid contact?

jrhudson · 06-01-2021, 03:15 PM

Im not sure if this has the exactly the correct info you need but shows how thick your bearings should be and clearances for most of the motor

https://www.subarucar.net/sites/suba...FA20D_DOHC.pdf

x808drifter · 06-02-2021, 01:15 AM

IMO if you are asking these questions you would be better off paying someone to do it.
The only real way to know is to look at the ones already in the block.

06-01-2021, 11:30 AM	#1
Fa20Toybaru FA20ToyBaru Join Date: May 2020 Drives: Manual Location: Texas Posts: 45 Thanks: 1 Thanked 2 Times in 1 Post Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Rod Bearings/Main Bearings So I am now building the block. I finished the valvetrain, trans, and suspension. In my search for information, i have come up short on how to access what bearing sizes i would need. I am going to be using the stock crankshaft. I found that King makes some pretty good bearings that last but im stuck looking at different sizes. I am not going to modify the stock crank, so my question is the following. Where can i find the dimensions for the stock OEM bearings to compare? Also, has anyone used the King XPG bearings on a stock crank? If so what size did you use to provide the correct lubrication and avoid contact?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Wheel bearings gone bad	rustymuffler	Issues \| Warranty \| Recalls / TSB	25	05-02-2019 11:21 AM
Bent cam bearings/rod?	Gost	Issues \| Warranty \| Recalls / TSB	16	02-19-2018 08:56 PM
Bearings Wanted	Lunatic	Engine, Exhaust, Transmission	0	01-29-2018 02:52 PM
The OEM rod bearings debate	nelsmar	Engine, Exhaust, Transmission	58	12-02-2013 12:51 PM

06-01-2021, 03:15 PM	#2
jrhudson Senior Member Join Date: Apr 2021 Drives: 2016 scion frs Location: ca Posts: 234 Thanks: 122 Thanked 100 Times in 67 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Im not sure if this has the exactly the correct info you need but shows how thick your bearings should be and clearances for most of the motor https://www.subarucar.net/sites/suba...FA20D_DOHC.pdf

06-02-2021, 01:15 AM	#3
x808drifter LMGTFY Join Date: Mar 2016 Drives: 13 FRS, 91 Miata Location: Lava Town, HI Posts: 2,776 Thanks: 5,561 Thanked 3,646 Times in 1,625 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	IMO if you are asking these questions you would be better off paying someone to do it. The only real way to know is to look at the ones already in the block.

User Name		Remember Me?
Password