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Main And Big End Bearings

bnr#@

By bnr#@,
in Engines & Forced Induction

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bnr#@ Mentor

bnr#@

Posted
Posted

I’m about to start putting back my engine (RB26) and was wondering what bearings I should be using.

The other parts in the bottom end rebuild are as follows

TOMEI 86.5mm pistons

Standard rods shot peened resized and polished

TOMEI reinforced rod bolts

Standard crank with extended collar

N1 oil and water pumps

Trust sump extension

ARP main and head stud kits

NISMO 1.2mm head gasket

Final power output I’m chasing will be 300awkw if that matters

Any experienced feedback would be appreciated

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https://www.sau.com.au/forums/topic/141655-main-and-big-end-bearings/
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DVS JEZ Grand Master

DVS JEZ

Posted
Posted
im goin acl race series....

hey buddy,

i just put some new bearings in my rb26 today.

im running 416awkw but had to do crank collar and sump baffle etc.

ACL black metal race series bearings.

they dont look as nice as normal bearings because they dont get the final stage of treatment where they flash coat them. this improves the bearing to housing contact giving greater heat dissapation, also to prevent any flash plate migration or movement, and improve surface characteristics...

cheers

Jeremy

bnr#@ Mentor

bnr#@

Posted
  • Author
Posted
hey buddy,

i just put some new bearings in my rb26 today.

im running 416awkw but had to do crank collar and sump baffle etc.

ACL black metal race series bearings.

they dont look as nice as normal bearings because they dont get the final stage of treatment where they flash coat them. this improves the bearing to housing contact giving greater heat dissapation, also to prevent any flash plate migration or movement, and improve surface characteristics...

cheers

Jeremy

So the ACL black metal race bearings are the goods then? I thought that the ACL race bearings were tri metal bearings which I was told were not good for performance application?

gun32gtr Grand Master

gun32gtr

Posted
Posted

i had acl race series in a vl turbo i had... seemed good and heard lots of good things... few mags i reaD the peoples specs there were acl bearings in alot of cases so they sounded like the go 2 me.

nemini90 Enthusiast

nemini90

Posted
Posted

If you want to do things right get nismo bearings you buy them to suit the crank and block so it will remain factory iv got them in my motor and would not ues anything else if there good for a gt500 car then there good for me...

Denver Grand Master

Denver

Posted
Posted

all bearings have sizings, ACL is the same as nismo, well pretty much the same, might find a few microns in difference in sizing..

i ran ACL mains, and nismo big ends on my car tho, had no hassles, will probably do the same when i need to..

bnr#@ Mentor

bnr#@

Posted
  • Author
Posted

Once the rods have been resized the grading numbers become fairly irrelevant though don’t they? My understanding was that you get a standard size bearing and then have the crank ground to get the desired oil clearances. I have no problem forking out for the nismo stuff but the differences in bearing grades on them are measured to the thousands of a mil and I don’t think there is mush that can measure you’re crank and rods that accurately is there?

monga Experienced

monga

Posted
Posted (edited)

I've just rebuilt mine using KING bearings seem good so far..

some gear on my build

NISSAN N1 CRANK SHAFT

NISSAN N1 OIL PUMP

NISSAN N1 WATERPUMP

NISSAN GASKET KIT

NISSAN TIMING BELT

EXEDY TWIN PLATE CLUTCH

TOMIE OIL RESTRICTOR

ARIAS FORGED PISTONS

EAGLE RODS

ARP HEAD STUD KIT

COMETIC HEAD GASKET

RESLEAVED BLOCK AND DECK

KING MAIN BEARINGS

KIN BIGEND BEARINGS

PERFORMANCE VALVE SPRINGS

HEAD SERVICED PORT & POLISH AND K LINNERS

SUMP BAFFLES

INJECTOR FLOW TESTING

DRIVE BELTS

NISSAN COOLANT

OIL & FILTERS

HKS 2530 TWIN TURBOS

HKS DUMP PIPES

HKS SUPERDRAGGER 3.5INCH

HKS CAMS

OIL COOLER

HIGHFLOW CAT

850CC DENSO INJECTORS

BOSCH FUEL PUMP

TRUST TWIN PODS

ROM ECU

STRUTE BRACE

REAR SWAY BAR

ENGINE DAMPNER

AFTERMARKET SUSPENSION

17INCH PANASPORT RIMS

BF SCORCHER SLICKS

D JETRO COMING..

EBOOST 2 COMING..

Edited by monga
bnr#@ Mentor

bnr#@

Posted
  • Author
Posted
I've just rebuilt mine using KING bearings seem good so far..

some gear on my build

NISSAN N1 CRANK SHAFT

NISSAN N1 OIL PUMP

NISSAN N1 WATERPUMP

NISSAN GASKET KIT

NISSAN TIMING BELT

EXEDY TWIN PLATE CLUTCH

TOMIE OIL RESTRICTOR

ARIAS FORGED PISTONS

EAGLE RODS

ARP HEAD STUD KIT

COMETIC HEAD GASKET

RESLEAVED BLOCK AND DECK

KING MAIN BEARINGS

KIN BIGEND BEARINGS

PERFORMANCE VALVE SPRINGS

HEAD SERVICED PORT & POLISH AND K LINNERS

SUMP BAFFLES

INJECTOR FLOW TESTING

DRIVE BELTS

NISSAN COOLANT

OIL & FILTERS

HKS 2530 TWIN TURBOS

HKS DUMP PIPES

HKS SUPERDRAGGER 3.5INCH

HKS CAMS

OIL COOLER

HIGHFLOW CAT

850CC DENSO INJECTORS

BOSCH FUEL PUMP

TRUST TWIN PODS

ROM ECU

STRUTE BRACE

REAR SWAY BAR

ENGINE DAMPNER

AFTERMARKET SUSPENSION

17INCH PANASPORT RIMS

BF SCORCHER SLICKS

D JETRO COMING..

EBOOST 2 COMING..

Sounds like one hell of a list. So you got you’re crank ground to suit the bearings?

Faid Collaborator

Faid

Posted
Posted

Well i used ACL and no problemo so far, they seem to handle the abuse, but a bearing will function only if you treat it good ie systematic oil changes, dont overheat you engine etc. but the ACL's are good.

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