b18sihatch

ok so i have a turbonetics t3/t4 turbo, and i believe it has a small ammount of shaftplay, and my question is how much shaft play is a performance damning ammount and how much is a acceptable ammount, and when to know to rebuild it?

and is there a natural ammount of shaft play in turbos?

b18sihatch

what i was asking is there shaft play in non ball bearing turbos when there isnt oil in it?

Mugencrxsir1

Yes it normal, oil will fill in the space and tighten up this shaft play. If you have a lot of shaft play with oil in it, then you have a problem and should be worried then. But it's normal to have some side to side without oil.

sewell94

there should be some up and down play but NO side to side. If if have side to side somehting wrong. The best test quick test i know if is to push one side all the way up and the other side down, then try to spin it. If it spins and doesn't hit the housing and you don't hear any scraping sounds your good to go.

Got_soy

and by side to side, you mean in and out right?

Soccerking3000

yea i was going to say you dont want ANY in/out play as for side to side if you can spin it still and the turbine doesnt hit the housing your fine

b18sihatch

yea, i mean my turbo spins very freely, and it doesnt hit any walls or anythnig, and its really stif, only when you really try to move it, it loves side to side very very little, and i figured that was prolly bc it doesnt have oil in the housing to stiffen it up

Soccerking3000

you're fine i dont think there is anything wrong, have fun boosting

sewell94

when i mean side to side i mean like u were gonna pull the shaft out of intake or exhaust. is your turbo rebuilt, if some sometimes they are kinda tight. good luck

b18sihatch

my turbo isnt rebuild, its used, but i dont think it had been used much bc the shaft doesnt have any finger shaft play (like if you put one finger in the middle of the shaft and try and wiggle it, its firm and real stiff) and it spins super freely, i know this sounds goofy, but to test how good it spins, i put a vacuum hose on the intercooler side of the turbo to simulate air being pulled from the turbo, and even the vacuum was able to spool the turbo lol, i know that is goofy lol, but i was super curious as to see if it would or not lol but thats a good sign right?

Soccerking3000

the turbo is fine man lol, and yes that is goofy lol

Got_soy

I did that too when I first got my turbo, i may have been overly excited

Hybrid_Coupe

lol i kinda did that with my first turbo...but i have a kirby and i convertered it into a blower and stuck it on the exhaust housing.

b18sihatch

haha see there is more people out tere doing that with their turbos lol, but yea i was just testing it lol