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Old 02-14-2021, 07:58 PM   #1
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Spun bearing

Apparently a common issue in the LSA world. But itís part of the game I guess. Currently sitting at 703 whp. bolt on +e85 car. No cam, heads or internal work. Hopefully I can salvage block. Iím sure crank and bearings of course will need to be replaced. Any suggestions on upgraded bearings? Buddy of mine uses ďkingĒ brand bearings I believe. If block, crank and bearing are all trash. Iíll prob be in the market for a new short block or stroker. Any advice is welcomed!

Iíll be letting an engine shop put it all back together. And Iíll throw motor back in. Iíll also be upgrading to the melling 10355 HV oil pump, SS3 GPI cam while itís out. I was using 5w30 oil at the time of it spinning. Iíll be upgrading to 20-50 VR1 oil as well. Once motor is back in the car. Will I need HV oil pump if I switch to VR1? I got a few LSA buddies running factory pumps with 850+ . Any other suggestions?
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Old 02-14-2021, 08:23 PM   #2
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Dang, that sucks! You'll be back stronger than ever though! Mine is making quite a bit more power than that on the stock oil pump and stock bottom end, and the oil pressure is holding steady at 30psi hot with Mobil 1 5w30... But who knows for how long?
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Old 02-14-2021, 08:25 PM   #3
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Ughhh... hate to see this but hopefully you caught it quick.
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Old 02-14-2021, 08:53 PM   #4
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How did you catch it? Low oil pressure? Just want to know what to look for.
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Old 02-14-2021, 09:32 PM   #5
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Old 02-17-2021, 11:09 PM   #6
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Originally Posted by Triple5even813 View Post
Dang, that sucks! You'll be back stronger than ever though! Mine is making quite a bit more power than that on the stock oil pump and stock bottom end, and the oil pressure is holding steady at 30psi hot with Mobil 1 5w30... But who knows for how long?
Yeah I was debating upgrading. I figured for $200 why not get a Melling 10355 HV that supposedly put around 10-20psi more oil pressure out. I think it will help with the thicker oil 20w50 VR1 everyone has been telling me to run.

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Ughhh... hate to see this but hopefully you caught it quick.
Fingers crossed. Part of the game tho. Luckily I got a daily to drive. And itís winter when it broke. Not mid summer. Looking for the bright side lol

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How did you catch it? Low oil pressure? Just want to know what to look for.
Did a very small pull to pass someone. And just happened to look at my oil temp gauge and it was at like 240į on a cold night. Then looked at oil press and it was sitting at like 10-15 psi cruising. And only like 6-8 psi at idle and heard it lightly knocking. Luckily I was 1/4 mile from my house. Got it on my street and shut it off. Coasted into my garage. Where itís been the last couple weeks. Til I can pull motor.

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My LSA build worked out great! GPI and I discussed it and Iím beyond pleased. Talk to Aaron ó heíll help you spec a good one...

-Don
Yeah GPI is literally 2 miles from my house. I been in touch with Ryan & Ben. Iíve had people tell me it could be a number of things (in the tune, too much dome pressure, or failing oil pump, the fact I was using 5w30 M1 with my power level, just normal LSA issues, and blocked pickup tube) guess we will find out.
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Old 02-18-2021, 10:45 AM   #7
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Quote:
Originally Posted by Astatenate View Post
Yeah I was debating upgrading. I figured for $200 why not get a Melling 10355 HV that supposedly put around 10-20psi more oil pressure out. I think it will help with the thicker oil 20w50 VR1 everyone has been telling me to run.



Fingers crossed. Part of the game tho. Luckily I got a daily to drive. And itís winter when it broke. Not mid summer. Looking for the bright side lol



Did a very small pull to pass someone. And just happened to look at my oil temp gauge and it was at like 240į on a cold night. Then looked at oil press and it was sitting at like 10-15 psi cruising. And only like 6-8 psi at idle and heard it lightly knocking. Luckily I was 1/4 mile from my house. Got it on my street and shut it off. Coasted into my garage. Where itís been the last couple weeks. Til I can pull motor.


Yeah GPI is literally 2 miles from my house. I been in touch with Ryan & Ben. Iíve had people tell me it could be a number of things (in the tune, too much dome pressure, or failing oil pump, the fact I was using 5w30 M1 with my power level, just normal LSA issues, and blocked pickup tube) guess we will find out.
Brah, these motors are not at all spec'd for 20-50w........ might want to do some studying on clearances before "listening to everyone". The hotrod world is pretty sad these days. No one wants to learn..and if they do they do it the hard way several times.

One of the best tech sites in the world is dead as ****. LS1tech...there was infinite info and data there. Maybe a good place to start reading.
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Old 02-18-2021, 10:54 AM   #8
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The factory oil pans aren't the greatest for hard acceleration. We suspect it as being a factor in our last failure.
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Old 02-18-2021, 04:06 PM   #9
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Man, that just sucks. Sorry to hear it! Hopefully it's not too much carnage and most stuff will be salvageable with any luck. In any case, good excuse to build it back stronger.

Best wishes, dude!
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Old 02-18-2021, 04:49 PM   #10
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Originally Posted by BLK95-Z View Post
The factory oil pans aren't the greatest for hard acceleration. We suspect it as being a factor in our last failure.
I was just watching a video of a guy explaining how ls blocks should have a larger oil pan especially with a higher volume oil pump.
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Old 02-19-2021, 01:53 PM   #11
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Originally Posted by RyangAsh View Post
Brah, these motors are not at all spec'd for 20-50w........ might want to do some studying on clearances before "listening to everyone". The hotrod world is pretty sad these days. No one wants to learn..and if they do they do it the hard way several times.

One of the best tech sites in the world is dead as ****. LS1tech...there was infinite info and data there. Maybe a good place to start reading.
Man thatís crazy. Every LSA guy Z or V around here is running that 20w50 VR1 and I was the only one running 5w30 and I somehow spun a bearing. Both my tuners at GPI recommended the VR1 as well. As itís not daily driven. I guess Iíll do some more research.

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The factory oil pans aren't the greatest for hard acceleration. We suspect it as being a factor in our last failure.
Yeah I could see that. Do we have an aftermarket option that would work well? Havenít done much research on the pan.

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Man, that just sucks. Sorry to hear it! Hopefully it's not too much carnage and most stuff will be salvageable with any luck. In any case, good excuse to build it back stronger.

Best wishes, dude!
Yeah for sure. Upgrading bearings and oil pump, with big cam for sure while itís out. I donít have the power goal of 1,xxx so I think Iíll be fine just with OE parts (crank, etc) if destroyed. But we shall see.

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I was just watching a video of a guy explaining how ls blocks should have a larger oil pan especially with a higher volume oil pump.
Care to explain why? I never really understood pan volume in comparison to a HV oil pump. If the pump is flowing more sufficiently then whatís the need for a bigger pan? Just curious.
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Old 02-19-2021, 07:13 PM   #12
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I've heard of guys cracking the block going over 1000 hp, supercharger rattle, burned up piston from too much boost, collapsed bricks and rocker/trunion issues but this is the first spun bearing I've read about. I wouldnt say it's common. Lots of guys run 5w-30 with zero issues so I'm wondering if you had a one-off bad oil pump or something.
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Old 02-19-2021, 07:38 PM   #13
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Care to explain why? I never really understood pan volume in comparison to a HV oil pump. If the pump is flowing more sufficiently then whatís the need for a bigger pan? Just curious.[/QUOTE]

It's not about the pump. More about returning oil to the pan. Gravity can only do so much. There's also a difference between high pressure and high volume pumps.You need to ensure that theres enough oil in the pan to pump baseed onthe flow from the pump and return to the pan.
During higher RPM operation theres lots of oil up top from pumping and windage.
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Old 02-20-2021, 12:00 AM   #14
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I've heard of guys cracking the block going over 1000 hp, supercharger rattle, burned up piston from too much boost, collapsed bricks and rocker/trunion issues but this is the first spun bearing I've read about. I wouldnt say it's common. Lots of guys run 5w-30 with zero issues so I'm wondering if you had a one-off bad oil pump or something.
Itís apparently very common in the LSA world on the V side. Thereís so many posts about spun bearings. Itís not even funny. I reinforced brick. Did solid isolator. Vented crankcase. I did everything I thought would be good enough. I read horror stories about M1 5w30 which is what I was told to run. Now all my racing buddies and tuner are telling me I shoulda been running VR1 5-20. So idk. I trust their word. And yeah I canít wait to get it out and see the damage.
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