Hey guys,
I picked up a cheap 3.1 crate motor this weekend. Brand new still in GM crate and wrapping. I will be using it for my turbo cutlass swap and will need to break it in obviously. Anybody have any tips for me on how to do this? I'm thinking no/little boost for the first couple hundred miles, but also thinking that I should just break it in how I'm going to be running it in the future.
Anyways any help is appreciated! Thanks!!
Kyle
Is it a complete long block or a short block that you need to put the upper half on?
Either way...make a tool that you can connect onto your drill to get oil pressure up and flowing without cranking the motor over. Running the turbo line from the compressor housing to the wastegate should limit you to 4PSi_g. That should be fine. I would make sure your chip is not giving factory fuel if you decide to hit anything in the boosted ranges.
If it is a GM crate motor then drive it the way you plan to drive it. Just be easy on boost until you get at least 500-750 miles on it. Is the bottom end built top handle boost?
Quote from: TGPilot on July 23, 2007, 02:13:26 PM
Is it a complete long block or a short block that you need to put the upper half on?
Either way...make a tool that you can connect onto your drill to get oil pressure up and flowing without cranking the motor over. Running the turbo line from the compressor housing to the wastegate should limit you to 4PSi_g. That should be fine. I would make sure your chip is not giving factory fuel if you decide to hit anything in the boosted ranges.
If it is a GM crate motor then drive it the way you plan to drive it. Just be easy on boost until you get at least 500-750 miles on it. Is the bottom end built top handle boost?
It's a complete GM long block it's still in the GM wrapping and crate from the factory. Just needs intakes, accessories and sensors which I have all virtually new ones anyways, so not a big deal at all there.
It's just a stock N/A Motor but I figure it won't be a problem as Josh is running 13lbs on his 240,000 NA 3.1. and all I'll ever want to run is a T25 and 12-13 lbs on the MBC so it will most often just see 5-8 lbs anyways.
thanks for the tip about the oil pressure. I will be sure to give it a try before I start it up!
Well first off you don't need to make a tool to pre oil it before starting. As I remember it's a 7mm socket on a long extension, just chuck it in a drill motor. Can't remember the direction but you will find out. After you put the top end on just spin the pump up until you have oil pressure on your gauge for a few seconds.
I would seriously recommend adding the GM start up lube or start up lube from crane or comp cams to save your cam especially if you have any trouble starting it. Upon initial start up pull the fuel pump fuse and crank until you have oil pressure for a few seconds. Like 20 to 30 seconds to get the lube mixed in with the oil. Then fire it. You don't have to run it at 2k to oil everything as there is no splash from the crank to help oil the cam. A high idle is sufficient. Just keep the oil pressure up.
These motors are famous for wiping cams out. If you have the time put an oiler on #10 lobe.
Good luck, hope it runs like a stripped ass rabbit.
Jud