Sup,
So i bent my valves on the b16,
im purchasing a fully built GSR JG pro series head.
Ported and Polished, w/ 3 angle valve job, JG Valves, springs, retainers, stock gsr cams.

so the head has 4,000 miles on it coming from another gsr turbo, although how can i see that its a good shape. my friend told me no matter what, if i take it to a shop or not they cant tell if its junk or gold.

he wants 1600 for the head. ill pay whatever it takes to get a good head, that i can rely on.

should i take it to a shop, can they do tests or is it all trail and error when i use the head?
thanks

 

bumpin it up.

 

I guess if you can find a shop with a flowbench then you'll be able to see how well it flow.

 

anybody else have any other options....

 

also i am looking for a low compression built set up...what factors determine the compression of the head. or does compression just depend on pistons/rods? thanks