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02/01/93

 

"How to Tweak Your  GN/T"

 

 

DEDICATION:

 

I.   TABLE OF CONTENTS

 

II.  PREFACE

 

III. CPP PERFORMANCE RECIPE     

 

1.     TWEAKING - PERFORMANCE UPGRADES

13 SECOND PERFORMANCE

12 SECOND PERFORMANCE

11 SECOND PERFORMANCE

10 SECOND PERFORMANCE

 9 SECOND PERFORMANCE

 

2.     FUEL SYSTEMS

   2.1.      SIZING/TYPES

   2.2       PUMPS

   2.3       REGULATORS

   2.4       AUX. REGULATOR

   2.5       FILTERS

 

3.     INJECTORS: SIZING/TYPES

 

4.     TURBOCHARGER SELECTION

 

5.     INTERCOOLER SELECTION/TYPES

 

6.     SUSPENSION

 

7.     TRANSMISSION/TORQUE CONVERTER

 

8.     HEADS/

 

9.     TIRES/WHEELS

 

 

A.     MAINTENANCE TIPS

MAINTENANCE RECOMMENDATIONS             

PLUGS/HEADS

GM Part numbers

PERFORMANCE TUNE

TORQUE SPECIFICATIONS

 

 

B.   HOW-TOS ................

Cam Sensor Installation/Adjustment

Crank Trigger Installation/Adjustment

Head Gasket Installation

Coil Pack Analysis

Plug Wire Analysis

TPS Adjustment

Fuel Pump Replacement

Extract Trouble Codes

Anti-Theft Tricks

 

 

C.   MISC .........

PERFORMANCE EQUATIONS

INJECTOR PULSE WIDTH CHART

BOOST/MAP/BAR CONVERSION CHART

CR CALCULATION CHART

TIRE/GEAR SELECTION

 

D.     Troubleshooting Tips ...................

Smoke from tailpipes.

Intermittent miss under load.

Oil in throttlebody.

Excessive detonation.

Excessive fuel pump noise.

Overboost conditions.

Ratcheting noise from rear-end.

Hard Starting

Rough or erratic idle

Trouble Codes [again]

 

 

D.     GLOSSARY.........

 

 

 

 

II.     PREFACE .......................

 

The Buick Grand National, T-Type and GNX have proven to be the most remarkable automobile that Detroit has ever built. 

 

Think about it ..................

 

What other mass produced vehicle can tote the groceries,  get over 20 MPG, easily run 12-second quarters,  holds its resale value,  has proven reliable w/100k+ miles, and  STILL turns heads after all these years?????

 

"How to Tweak Your GN/T" has been written to provide the proud owners and followers of these remarkable automobiles with a single reference document that contains most of the needed maintenance, technical and how-to information required to tweak the GN/T.  It is structured specifically for the performance enthusiast and backyard mechanic striving to enhance or maintain the performance and reliability of the turbo Regals.