When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hey guys long story short I noticed some oil pressure drop and drained the oil to see if anything looked out of the ordinary. This motor was fully built by local machine shop and has under 500 miles total. It is an lq4 set up for boost. All parts inside motor are brand new. Here is what the bottom of oil pan looked like after draining oil..
There were also tiny copper shavings in oil filter. I had good oil pressure until today. I probably lost 20-30psi at idle. Opinions on what is going on/what needs to be done? Thanks
^^^^ Suggest you pull it, LEAVE it assembled, and deliver it to the shop....
Set up for boost... Was it actually run w/ boost?
How's it controlled? Aftermkt or oem controls?
Data logs?
Have bushed rockers?
The engine needs to be pulled and rebuilt. I would call the shop that built it and see what they'll do for you.
I talked to machine shop today. They said it looks like bearing failure and they are looking over my build sheet and going to call me back. I am going to start pulling the motor.
Originally Posted by Old Geezer
^^^^ Suggest you pull it, LEAVE it assembled, and deliver it to the shop....
Set up for boost... Was it actually run w/ boost?
How's it controlled? Aftermkt or oem controls?
Data logs?
Have bushed rockers?
Yea it has been on boost. Its controlled by wastegate spring. My tuner has the data logs from street tuning but I do not. It has ls6 rockers with trunnion upgrade.
Light glitter in the oil is normal after a fresh engine build. Now if there is a loss in oil pressure and there is larger flakes that you can actually grab out of the oil, that is no good. I would immediately take it back to the engine builder and have them tear into it. It would need to be fully gone through, and would need to be torn down to the bare block, thoroughly cleaned and new bearings installed. I would also have them check to make sure the cam/crank journals are not scarred/damaged.
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Bearings going already? 
