turbo help needed

[82ndsnpr]

i need some info on these three turbos from size to airflow

gt47 garrett
s488
s4t big bro from Industrail

using one in a twin setup cant figure out any info but more then one company told me to pick one of the three for my ap. well need to know alittle before i chose thanks.

 

[j-rod]

Need more info on the Garrett to answer your questions. There should be more numbers afterward like GT47XX or GT47XXX.

 

[soulezoo]

Gt4718 is about 138lbs/min & spools faster than the other two and is most $$
Big Bro is 120 lbs/min and spools the slowest but cheapest to get
s488... not sure what the airflow is... I think mid-high 120's and about 1/3 less $$ than the Garrett.

This is with similar sized EH's on all 3.

 

[82ndsnpr]

gt4718 is the same as the r just bb? they have 8 listed all diff part numbers dont see the diff in them what is the cost for the bb 47?

 

[soulezoo]

The GT47 (can be 08 or 18) without the "r" is journal bearing. With the "r" -- as in GT4718r... is Ball Bearing. The BB turbo is a fair amount more.

All the numbers you see are the difference between the compressor wheel size-- again, 108mm inducer or 118mm inducer, combined with the 4 different exhaust housing choices...

Then another set of part numbers for the BB version.