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Discussion Starter #1
I have new Y hoses but suspect my orific hole is wrong size. I'm also pretty sure that my wastegate solenoid is bad because I'm overboosting like made until I block off the line leading to it with a nail. If anyone has these parts new, please contact me either here or at [email protected]

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~Rob Baker~
87 Grand National. 66k miles
HW Walbro 340, Billet Adj FPR, 30# VDO boost Gauge, Fuelrail mounted FP Gauge, Cold Air Induction System, Stock everything else. Thrasher 92/100 and OTC 2000 scan tool.
 

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It's all in the orifice. I could be wrong, and don't quote, but I believe the opening is supposed to be .045. Check me on that. This more than likely is the problem..

[This message has been edited by Turbo_Tim (edited November 13, 2001).]
 

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GM still sells both"Bought mine last tursday.
 

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So easy cavemen can do it
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I just recently had my wastegate actuator and solenoid replaced...also got new vacuum hoses and car runs perfect...I was overboosting just like u when I plugged that hole up...so much powa now! I ordered mine from Poston's since I ordered all new exhaust from them at the same time.

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http://www.angelfire.com/in4/d0n_3d/

1987 Buick Grand National - 70,000 miles, Stock engine: Poston chromed MAF pipe, homemade cold air induction system w/ 9" K&N air filter behind headlights, Poston 3" Downpipe with high-flow CAT and test pipe, 2.5" Hooker cat-back exhaust system, adjustable wastegate actuator set at 15 lbs of boost on 93 octane for now until fuel pump and regulator are upgraded (coming soon), K&N breather by-pass kit, ANS Performance 93 octane street/strip chip, throttle body coolant lines blocked, 160 degree thermostat, removed 1 screen from MAF sensor and removed intercooler screen, CR43TS spark plugs, BFG P255/60/R15 all-weather rear tires... first track times next spring=(

1995 Mercury Cougar XR7 - 87,000 miles, Stock 4.6L V8 Engine: dual exhaust out the rear, modified air-box with cold air induction, modified chip, adjustable fuel pressure regulator, P245/70/R16 all-weather rear tires; 14.9 @ 92mph

"Have U Been Beat...By A Grand National Lately?" <--many have been

Note to all Ford/Chevy/Import owners: BUICK OWNZ J00;)
 

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Discussion Starter #5
Thanks gang. I'm heading out to replace them all.

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~Rob Baker~
87 Grand National. 66k miles
HW Walbro 340, Billet Adj FPR, 30# VDO boost Gauge, Fuelrail mounted FP Gauge, Cold Air Induction System, Stock everything else. Thrasher 92/100 and OTC 2000 scan tool.
 

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I'm the Best!
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if its not too late order it from gmpartsdirect.com. alot cheeper.

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Rob
87 GN fully loaded with 84k :(
TA49
Ultra Flow exhaust
Cold air induction
3" DP
T-Link comming soon :)
shooting for low 13's high 12's
 

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Discussion Starter #7
Thanks Rob. I'll look into that.

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~Rob Baker~
87 Grand National. 66k miles
HW Walbro 340, Billet Adj FPR, 30# VDO boost Gauge, Fuelrail mounted FP Gauge, Cold Air Induction System, Stock everything else. Thrasher 92/100 and OTC 2000 scan tool.
 

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