Shaft play - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jamesd · 01-14-2018, 10:43 AM

Hi all
Got a greddu t518z with some shaft play.
Its a journal bearing so will fill with oil but is this too much ?

https://youtu.be/4H-28IY8hQM

Green Arrow · 01-14-2018, 02:44 PM

Title is misleading, got my hopes up.

Maybe Greddy could “recondition” it..

Kingtal0n · 01-14-2018, 03:10 PM

It might be fine.

Shaft play isn't a great indicator of whether a turbo is good. I've seen low play turbos with bad bearings. Only way to find out is run it.

Keep in mind mileage wears the blade and the clearance as well, reducing efficiency. Using a really good paper filter will prolong the life of the blade and engine. A good test is to compare the horsepower with the same car using a brand new turbo. For example 1998 Silvia 2.0L everyone knows will do 280rwhp all stock new turbo. But if I dyno one and then right away install a used T-28 from 1998 silvia on the 2.0 and I can only get 250rwhp with no boost leaks, yeah it probably has too much wear. They are amazing because they will last 25+ years and still work, just lose power over time from wear.

jamesd · 01-14-2018, 04:05 PM

Guy i got it off had it working grand.made 310 with very little supporting mods.no smoke or nasty stuff
I know journals have play but not sure if this is too much
No in or out play

jamesd · 01-17-2018, 04:14 PM

Will a td05 rebuild kit do it

01-14-2018, 10:43 AM	#1
jamesd Join Date: Sep 2014 Location: Ireland Age: 40 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Shaft play Hi all Got a greddu t518z with some shaft play. Its a journal bearing so will fill with oil but is this too much ? https://youtu.be/4H-28IY8hQM

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01-14-2018, 02:44 PM	#2
Green Arrow BANNED Join Date: Dec 2015 Location: North Korea Posts: 349 Trader Rating: (0) Feedback Score: 0 reviews	Title is misleading, got my hopes up. Maybe Greddy could “recondition” it..

01-14-2018, 03:10 PM	#3
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 40 Posts: 4,828 Trader Rating: (17) Feedback Score: 17 reviews	It might be fine. Shaft play isn't a great indicator of whether a turbo is good. I've seen low play turbos with bad bearings. Only way to find out is run it. Keep in mind mileage wears the blade and the clearance as well, reducing efficiency. Using a really good paper filter will prolong the life of the blade and engine. A good test is to compare the horsepower with the same car using a brand new turbo. For example 1998 Silvia 2.0L everyone knows will do 280rwhp all stock new turbo. But if I dyno one and then right away install a used T-28 from 1998 silvia on the 2.0 and I can only get 250rwhp with no boost leaks, yeah it probably has too much wear. They are amazing because they will last 25+ years and still work, just lose power over time from wear.

01-14-2018, 04:05 PM	#4
jamesd Join Date: Sep 2014 Location: Ireland Age: 40 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Guy i got it off had it working grand.made 310 with very little supporting mods.no smoke or nasty stuff I know journals have play but not sure if this is too much No in or out play

01-17-2018, 04:14 PM	#5
jamesd Join Date: Sep 2014 Location: Ireland Age: 40 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Will a td05 rebuild kit do it