is it advisable to buy a used gsr oil pump (has 18k on it)
when do a rebuild for turbo applications? this is going on my LS block

 

it's not really needed but if you really want to go for it. it's just more of pain to do. what's easier and this is what i have is the oil line runs from the back of the motor from the oil sensor to an oil cooler(don't one that's too big or you'll lose pressure), then from there to the turbo. it works a lot better than a gsr oil pump and is a lot easier to install.

 

i was doing a rebuild anyway so that is why i was thinking about it.

how much is the oil cooler kit?

 

If you are rebuilding I would not go with a used pump! Just get a new one. These pumps are critical to the life of your engine and I would never risk using a used pump on an engine built for performance.

 

Get a new oil pump... The GSR or B20 pump will do fine, you'll need a new GSR timing belt too. If you know a shop that does it, you can get it shimmed to run a higher oil pressure, but don't know the downsides to it. Don't use the LS oil pump as it flows less.