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Old 13th March 2011, 11:20 PM   #1 (permalink)
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Which bearings to use ?

Im building my engine and ordered a bunch of stuff from the states. But there seems to be some trouble getting ACL bearings so i have the choice to go with
Power Enterprises, Nismo or Clevite instead or keep waiting for ACL bearings which are taking forever.

Power Enterprises have these options but i have no experience with them
Ranking: Thickness
0/Pink: 1.5 (-0.015/-0.011)
1/Purple: 1.5 (-0.011/-0.007)
2/Brown: 1.5 (-0.007/-0.003)
3/Green: 1.5 (-0.003/+0.001)
4/Yellow: 1.5 (+0.001/+0.005)
5/Blue: 1.5 (+0.005/+0.009)

Nismo / i have no idea about they are not even on their site but he offered me them


Clevite have been often used in Supras and are offered
Standard and .25 over





This is all that i ordered btw

CP Piston Set with Rings // 86.5mm(0.02")
Eagle H-Beam Connecting
Nissan N1 Oil Pump
Tomei Combination Kit (1.2mm Thick, 87mm Bore) for RB26DETT
*Metal Head gasket
*Metal ThrottleGasket
*Metal Intake Manifold Gasket
*Metal exhaust Manifold Gasket
*Oil gallery orifice
ARP Head Stud Kit
ACL Race Series Con Rod Bearings
ACL Race Series Main Bearings //Standard Oil clearence
2x - ACL Race Series Camshaft/Thrust Bearings & Small End Bushes

Nitto Oil Pump collar
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Old 14th March 2011, 12:19 AM   #2 (permalink)
R.I.P.S NZ is down to 7.48 @ 189mph with MGAWOT III
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I can help with the acl race bearings if you like, e-mail me.
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Old 15th March 2011, 12:53 AM   #3 (permalink)
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I would hold out for the ACL's ... never had any issues with them
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Old 15th March 2011, 05:38 AM   #4 (permalink)
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Quote:
Originally Posted by R.I.P.S NZ View Post
I can help with the acl race bearings if you like, e-mail me.
Thanks, ill send you an email if dont go with the nismo bearings


Quote:
Originally Posted by Hja-Ozz View Post
I would hold out for the ACL's ... never had any issues with them

yeah thinking about doing that, just dont know how long it will take and i would like to start putting the motor together and get it ready as soon as possible
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Old 15th March 2011, 11:12 PM   #5 (permalink)
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but has anybody used the Nismo ones, saw them here

Nismo - Engine Parts - RB26DETT - Nengun Performance

Nismo introduces the High performance Conrod Bearing set. These same bearings were used in the Le Mans 24 hour race and compared to stock beaings they have 20% more load compacity and according to Nismo they also can withstand 60% more heat and give twice as much more protection than standard bearings.

1 X Conrod Metal set = 2 Halves. 6 or 12 Halves are needed for a complete set.

1 X Main Bearing Inner Set = 2 Halves

1 X Main Bearing Center set = 2 Halves
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Old 16th March 2011, 05:44 PM   #6 (permalink)
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Quote:
Originally Posted by SupraT71 View Post
but has anybody used the Nismo ones, saw them here

Nismo - Engine Parts - RB26DETT - Nengun Performance

Nismo introduces the High performance Conrod Bearing set. These same bearings were used in the Le Mans 24 hour race and compared to stock beaings they have 20% more load compacity and according to Nismo they also can withstand 60% more heat and give twice as much more protection than standard bearings.

1 X Conrod Metal set = 2 Halves. 6 or 12 Halves are needed for a complete set.

1 X Main Bearing Inner Set = 2 Halves

1 X Main Bearing Center set = 2 Halves
Some guy in Sweden used Nismo bearings i think, he runs a T88-38GK and around 1000hp
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Old 17th March 2011, 11:28 AM   #7 (permalink)
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Im putting nismo's in mine cost me about 300AUD for the lot. My tunner recommend only using them, and he has built some of the quickest rb26's in perth.
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Old 24th March 2011, 10:50 AM   #8 (permalink)
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Nismo bearings are used in Nismos race cars so they are pretty good
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Old 31st March 2011, 10:08 PM   #9 (permalink)
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As far as i remember the nismo bearings i heard of started to flake or peel off not on one car but a few a tuner in south africa used them he commented saying the multiple layers of the bearing formation werent very good so they used to peel off the top soft white metal bearing surface.
Advantages to nismo bearings is that they are like nissan bearings and power enterprise you can build with some really good clearances across the board and in effect blue print your bottom end to some what of a degree.
Personally a good bearing should cater for all kinds of crank shaft journal sizes like Power enterprise or Nissan or Nismo, as far as i know tomei bearings are the same but are actually acl.
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Old 29th July 2011, 01:17 AM   #10 (permalink)
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i used undersized acl race bearings and had my crank cut (.025 under) within 1000 miles it spun a bearing.... dunno yet if it was a poor machining job that my builder didnt double check the clearances or perhaps the crank got too much heat when welding on the jun collar..... but after this experience im turned off from ACL..... I wanna know more about nismo bearings (like who makes them for nismo)..... if they dont quite do it for me than OEM nissan it is
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Old 29th July 2011, 02:05 AM   #11 (permalink)
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Quote:
Originally Posted by GTS4-R View Post
after this experience im turned off from ACL.....
How can you say that when you don't even know what caused the problem?

I'd put money on it NOT being an issue with the ACL bearings.
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Old 29th July 2011, 04:12 AM   #12 (permalink)
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i never blamed the ACL's but like i said it turned me off from them. I really prefer graded bearings to "standard" Nissan probably spent millions R&D'ing that very thing.....

honestly seeing you in here praising acl had me step back a second. i mean your reputation precedes you.

my motor is coming back out this week so hopefully i get a good idea of what really happened..... its just a shitty situation.... ive got so much money itno my car now and ive barely driven it in 2 years. This was a refreshly rebuilt engine (je 87mm, eagles, n1 pump etc, ground crank acl race undersize etc) and within 1000 miles this happens (it got built the first time due to a spun oem bearing from det on a shitty jdm tuned ecu) this time we barely got done seating the rings and were just starting to tune it (power fc).... werent even into the area of 4psi with "det-cans" hooked up.... NO knock events whatsoever and bam.... she starts knocking again..... i dont know whats to blame, yes. but now i very weary of many things (i was always skeptical of welding the collar on) for all i know the regrind messed up the radius fillet and it caught a bearing... who knows. but anyways im getting back into it now with a brand new r34 crank and tomei oil pump this time..... if you have some guidance feel free.... im always open to info
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Old 29th July 2011, 04:22 AM   #13 (permalink)
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Originally Posted by GTS4-R View Post
i never blamed the ACL's but like i said it turned me off from them. I really prefer graded bearings to "standard" Nissan probably spent millions R&D'ing that very thing.....

honestly seeing you in here praising acl had me step back a second. i mean your reputation precedes you.

my motor is coming back out this week so hopefully i get a good idea of what really happened..... its just a shitty situation.... ive got so much money itno my car now and ive barely driven it in 2 years. This was a refreshly rebuilt engine (je 87mm, eagles, n1 pump etc, ground crank acl race undersize etc) and within 1000 miles this happens (it got built the first time due to a spun oem bearing from det on a shitty jdm tuned ecu) this time we barely got done seating the rings and were just starting to tune it (power fc).... werent even into the area of 4psi with "det-cans" hooked up.... NO knock events whatsoever and bam.... she starts knocking again..... i dont know whats to blame, yes. but now i very weary of many things (i was always skeptical of welding the collar on) for all i know the regrind messed up the radius fillet and it caught a bearing... who knows. but anyways im getting back into it now with a brand new r34 crank and tomei oil pump this time..... if you have some guidance feel free.... im always open to info
Errr, start with a good engine builder first. The rest will work out.
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Old 29th July 2011, 04:25 AM   #14 (permalink)
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I have been told by a few places that ACL Race bearings are softer than Standard, This protects to crank, but may not last as long?
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Old 29th July 2011, 04:29 AM   #15 (permalink)
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Its not that easy to measure the difference in grades anyway ....
Measure the crank and if its within std spec, order standard bearings....
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