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Old 10-05-2010, 02:37 PM   #1
Sb22284
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Default Stock bearings @ 400WHP+

What do you folks think about running stock bearings on a built motor.

Im making 400 WHP on my 3076r @ 21PSI. My plan is to run E85 and im not sure if the stockers will hold up in the 450 WHP range

Motor - EJ257
09 Crank
09 Pump
99.5 CP 9.1:1
Gates belt
brand new block
eagle rods
cosworth 272 cams
bc valves
bc springs n retainners
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Last edited by Sb22284; 10-05-2010 at 03:09 PM.
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Old 10-05-2010, 02:58 PM   #2
scOOtNsOOby
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deff interested to find out
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Old 10-05-2010, 03:00 PM   #3
f-117
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built motor and ppg's

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I just had mine go with my dom3 with a conservative tune of 19lbs putting out around 360whp. I was running stock wrx motor tho with 67k, 7k of it with the dom3. my went when I was autoxing and it bounced of the limiter just b4 crossing the finish line. so if ur going to run them don't rev the crap out of it but my bet is they won't last and for how much a good set costs u might as well just throw in a set of acl's for a few hundred bucks.
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Old 10-05-2010, 03:04 PM   #4
Sb22284
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ya hear ya but the motor is already put together at this point.

i dont plan on really going near the 7.5k limit that much anyways.
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Old 10-05-2010, 03:05 PM   #5
Prevent
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brian who are you buying this from?

nice compression ratio too, hehe


9.1:5 ?
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Old 10-05-2010, 03:09 PM   #6
Sb22284
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are you stalking me little boy

im just wondering as some of the builders use stock bearings rather then ACL or Cosworth to save on cost. Seems like a bad idea to save a few bucks
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Old 10-05-2010, 03:18 PM   #7
blowbyu24
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Quote:
Originally Posted by Sb22284 View Post
are you stalking me little boy

im just wondering as some of the builders use stock bearings rather then ACL or Cosworth to save on cost. Seems like a bad idea to save a few bucks
its not to save money, the oem bearings are great, but they have to be spec'd out correctly

same theory as oem head gasket, by far the best gasket out there, but you have to have the right studs in and have them correctly torqued
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Old 10-05-2010, 03:19 PM   #8
john 1badSTI
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no if you price stock brgs they are way more expensive than acl's,I don't know why but they are.
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Old 10-05-2010, 03:46 PM   #9
juanmedina
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Quote:
Originally Posted by john 1badSTI View Post
no if you price stock brgs they are way more expensive than acl's,I don't know why but they are.
which one do you recommend for 400whp + build? I just know some people dislike ACLs because they are really hurt and your spin one you can ruin the crank or the block, truth ?
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Old 10-05-2010, 03:56 PM   #10
john 1badSTI
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no matter what brg you spin you're going to hurt the crank and my opinion is that most of the spun brgs on these forums is due to bad tunes and detonation.I personally like to use calico coated brgs,they are a little more money but I feel they are worth it.My second choice would be acl race brgs which is what is coated by calico.
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Old 10-05-2010, 04:12 PM   #11
sense of nature
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Acl's get my vote.. spun a few motors to 8-9k ( missed shifts) still goin strong
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Old 10-05-2010, 07:46 PM   #12
f-117
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ya I'm going with some cosworths in my new block, I think mine going was a combo of ovr rev/ autoxing high g's with out an aos or catch can and I was getting oil were it wasn't suppose to b and everything just popped when I hit the limiter the last time but ya for the cost of bearings u might as well put some in since u already have a few K wrapped up in ur motor already . better safe than sorry as they always say.
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Old 10-05-2010, 08:42 PM   #13
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cosworths are just more expensive acl's.
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Old 10-05-2010, 10:01 PM   #14
mtcs
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ACL Race bearings FTW
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Old 10-06-2010, 09:49 AM   #15
jkopinga
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OEM bearings are TOP quality stuff. But as mentioned before the stock clearances are sometimes a little too tight for high HP usage. If specced correctly on the clearances there's NOTHING wrong with OE bearings at all. Better to be a bit looser. I would target something like 0.0015" for the mains and somewhere between 0.0017 and 0.0020" on the rods regarding oil clearances to have a slightly looser, more rev happy bottom end.

Cheers,

Jasper Kopinga
CS Racing
Taiwan.
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