What size are the threads of the oil line fitting that threads into the front housing of an 87-88 t2 .
Also has anyone heard of the upgrade garrett has to go from a t04b to a
t04rbb? If so do you know how much it costs ?

 

its in the archives

ask a garrett dealer, there isn't going to be a set price.

 

S4 block requires a 12mmx1.5 fitting. Most of those fitting require trimming of the length to prevent them from bottoming out fyi.

 

I bought the fitting off atpturbo.com . I think it was the wrong pitch but I just used a die on it and it threaded right in without bottoming out.