Ok, so I bought a t3/t4 Rajay 301 EF 80 turbocharger with no shaft play for eighty bucks. I know that the exhaust A/R is .60 . Could anyone help me out with the size, or point me in the right direction? I have tried google and other places, but nothing. Thanks

 

You can measure the trim of both wheels yourself if you want. I haven't got a clue what any of that other crap is (Rajay 301 EF 80), .60 A/R t3 turbine is pretty small, but for $80 in good shape who cares!

If you take the housings off to measure the trim of the wheels its (inducer^2)/(exducer^2)x100=trim.

 

just make sure you didn't get it from ss autochrome. you'll be sorry if you did.

where did you get that formula from neal? good info.
Steve

 

I have no idea, that's just the definition of turbo trim.

 

.60 A/R is small? So it would be smaller than a t25? I want it for my max, I will be using 550cc injectors, and was told that it was an 80 trim, but I'm thinking not. Anyone here use a holset?

 

.60 isnt smaller then t25 but it will still die out at top.

 

have you measured the wheels yet spacifically the compressor wheels big and small diameters very important

you can go here http://64.225.76.178/catalog/comp_wheels.html and compare the sizes to the trim but they wont be exact

the A/R has nothing to do with trim or models any small frame garret turbo could have a .60 A/R t25 t3 t4 any of them but the wheels/trims are all different and thats where the power is

what do you need to know about holset

 

I know a guy with a Holset on his 10 second GVR4.

A .60 A/R T3 is not smaller than a T25 but it's still really small. That's a typical turbine used on a 1.6-1.8L honda...

 

The exhaust is a T4, and I did get it off of a honda guy; it was cheap and I can resell it for a lot. I know that holsets are big, but does anyone know what model to get?

 

No, t3/t4 means it's a t3 exhaust side and t4 compressor side. I've never heard of or seen a turbo mentioned that has t3 compressor side and t4 exhaust side. It wouldn't make any sense unless you were doign a very very low psi, large displacement motor. If it's off a honda I guarantee it's a t3 exhaust and t4 compressor. Do you have a pic of the turbo?

Holset makes a bunch of different sized turbos.

 

Quick question: What would be the ideal turbo size for our cars?

 

Y2K!

people read the stickies thats what they are for...

 

Are they really bad cause I was surfing ebay this weekend and seen their little setup for sale a T4 60-1 with wastegate and BOV so are they just cheap for a reason

 

you get what you pay for...

Search some online about peoples horror stories with SS Autochromes turbos.

 

They use epoxy to secure both halves of the turbo together that fails at high temperatures.

 

nice thanks for the heads up guess I had to figure something wasnt right bout a 400 dollar turbo guess it is off to cheap turbos.com I go

 

Y2k is kinda small, might be good for a twin turbo setup.