i searched here and even google and couldn't find whether or not your supposed to break in a rebuilt turbo or not...wtf? i just got my rebuilt T04R installed and im wondering if i can boost it hard or not right away..thanks

 

You should limit your boost for a break in period i dont know how long but 1000 miles should definatlly be enough i had read on some places a couple hundred miles but just to be on the safe side i guess

 

I was going to give you a line of **** but No there clearenced and balanced and good to go!

 

NO.

Seriously, there is nothing to break in on either a journal or BB turbo.

Carl

 

sweet im going to go drive it now and see how it runs. thanks for the info. i didnt think there was a break in period but ive heard a few people talk about it a long time ago but i didnt remember what they said. i was very suprised no one else has asked this question so i hope this helps others.

 

I usually just give new turbos a few miles before beating on them. There should be no extended break in period.

 

The only break in portion on a turbo is the piston ring seal on the turbine side. It wears a bit into the center housing and creates a better seal. Even so, you won't need to do anything special to break a turbo in.

 

Am I right in thinking that you should prime a brand new turbo - ie hold the shaft to stop it spinning so the turbo can fill with oil and gain presure before letting it turn?

 

^^ It only takes a few secounds for oil to reach the turbo when you start up (even if its new and dry).... and I don't think anyone will be boosting their car withen a few secounds of start up (if they are, their idiots) so just start the car up and let it idle for a few minutes and warm up (which should be normal practice anyway).

As stated already by others, theres no break in on turbo's except the rear piston seal. And that will break in on its own with time/use. Turbo's come from the factory with oil in them already also (they get oil pumped in them during the VSR balancing, and if their not VSR balanced, they still are supposed to have some oil applied to them during assembly), the bearings are'nt completely bone dry as some seem to suspect.

~Mike...........

 

Do NOT hold the shaft to stop it from spinning.

 

^^ LOL^^

I forgot to mention that holding the shaft would be a bad idea lol

~Mike.............

 

Unless your names stubby!

 

I always thought that there was little need for this but after buying a turbo (masterpower) a long time ago that came with these instructions to hold the compressor wheel (with a socket, not your hands ) i was a bit confussed.

 

my Garrett T04S had a tag on it from the factory which said to fill up the oil feed part of the CHRA with oil before starting. I did that and I cranked the car over a few times before starting.