Ok, so I have a turbo set up on my car right now, and I'm looking to upgrade to bigger turbo, the only problem is that to do so, I will have to change manifolds, and in doing so go with a two bolt WG. The WG I have now is an HKS 4 bolt (pretty old but works GREAT). So, what I was wondering is to save me from buying another WG, could I bring it to a machine shop and have them "shave off" two holes from that flange to make it a two bolt? As most of you know the two bolt flanges are a diamond shape and mine is a square shape, so...in theory, if I shave off two sides, then it would be the same shape... correct?

 

Probually but you can get a new manifold and tial 38mm Wg for pretty cheap these days. Also what size turbo do you plan on going with ? or how many psi do you plan on running because of how old you say your WG set-up is you may even be better off with a new tial or something. But if you want to go the route i'm guessing you prob can idk the limits of what machine shops can do or not

 

Just get an adapted made up or order the manifold with the correct flange put onto it

 

go for it.....

or you could do it the right way and just buy a tial pretty cheaply

 

I really haven't looked up any Tial WG's yet. My buddy says he has a Tial WG (44mm) for $100. I might just go about it that way. Thanks, I appreciate the input.

 

precision has some good ones but i would never get any other brand besides those 2.

make sure yours can except a 44mm and not a 38 GL

 

A 44mm is a V-band tho. you can get a blox log mani and a 38mm tial for like 500 brand new. And you can probually find used stuff anyways. I guessing it's a GSR motor becuase of your user name so theses probually a big market for them. In my eyes you have to get it retuned anyways if you get a bigger turbo so you might as well do it right and get a new mani and a better WG just my 2cents.

 

cut off the flange and have the right one welded on.