Need a External Gate Downpipe

[blackgn1]

What are my choices for an external gate downpipe? I have only found 2 choices and one of them has a waiting list. Seems to be limited choices.

 

[Howling Mad]

I think cotton makes one, and hye tech?

 

[GetOwnedVette]

Hye-Tech Performance

Downpipe, 3" external wastegate, Exhaust Systems, Downpipes & Related Parts, DPWEG | Cotton's Performance Buick Grand National Parts & Service

 

[J-B Racing]

I will be posting my GN1 3.5" DP for sale ina few days with a bunch of stuff. Going to a Stage Motor.
PM me if interested. $375 + Shipping

Joe

 

[blackgn1]

Haven't seen the Hye-Tech. Anyone know how well it fits? I have talked to Cotton's.

 

[SHADOWII]

TR customs and fullthrottle also carries the gn-1's I believe.

 

[williamsGN]

I have Cottons, I have since reclocked the wastegate.


Would read this about having to trim the fender well with the GN1
http://www.turbobuick.com/forums/engine-tech/359735-gn1-dp-waste-gate-who-has-one.html

 

[tonysmach]

I have Cottons, I have since reclocked the wastegate.


Would read this about having to trim the fender well with the GN1
http://www.turbobuick.com/forums/engine-tech/359735-gn1-dp-waste-gate-who-has-one.html

Did you re-clock the wastegate to make more room so the turbo heat shield would fit? Never seen that done before but I like it. Did you have to cut and re-weld the pipes?

 

[williamsGN]

Reclocked it so the vacuum hose would run out on the pass side of the wastegate instead of the driver's side too close to the headers. Came that way from Cottons a few years back.