Won't Hold Boost - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

vbl · 05-16-2007, 06:01 PM

hi everyone i'm running GT2871 on my SR REdtop motor, and u guy all know GT2871 running internal wastgate. But I weld it and make external wastgate. I'm using Turbonetic Delta Wastgate, the spring for this is 9 lbs. But when i run it only hold boost for unitl 4500rpm but after that it raise up 15 PSI at 6500rpm. I dont know why it wont hold boost or my wastgate is bad, PLEASE help me THANK U.

johngriff · 05-16-2007, 06:09 PM

Ok.

Sounds like a wastegate placement/size issue. Take some pics and post them.

05-16-2007, 06:01 PM	#1
vbl BANNED Join Date: Dec 2005 Location: MN Posts: 104 Trader Rating: (1) Feedback Score: 1 reviews	Won't Hold Boost hi everyone i'm running GT2871 on my SR REdtop motor, and u guy all know GT2871 running internal wastgate. But I weld it and make external wastgate. I'm using Turbonetic Delta Wastgate, the spring for this is 9 lbs. But when i run it only hold boost for unitl 4500rpm but after that it raise up 15 PSI at 6500rpm. I dont know why it wont hold boost or my wastgate is bad, PLEASE help me THANK U.

05-16-2007, 06:09 PM	#2
johngriff Post Whore! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,103 Trader Rating: (4) Rides Gallery: johngriff Feedback Score: 4 reviews	Ok. Sounds like a wastegate placement/size issue. Take some pics and post them. __________________ [email protected]