How to build a GSR Engine.
The definitive guide to building an engine.
Articles
- Tuning Basics (Tuning 101)
- OBD-1 ECU Codes
- Horsepower / Parts Charts
- The definitive GSR engine build article.
- Why horsepower doesn’t matter!
- Turbine housings, exhaust sizing, and backpressure.
- Compressors and Turbines Explained: Part 1
Video Tutorials
- How to build a GSR Engine.
- How to swap a B-Series Differential.
- How to swap Honda B-Series Camshafts.
Comparisons
This video is very in-depth with three separate break downs of the blueprinting and assembling. There are many high precision measurement tools used in the video that are essential for accurate clearancing of the main and rod bearings. Plastic gage was used to double check the measurements, but should never be solely trusted by itself! Often times plastic gage can give false readings, and should be used for comparison purposes ONLY! A Helms shop manual should be used in conjunction with the assembly for torque measurements and any other clearance specs.
The supplied bearing equation and size range charts were sourced from laskeyracing.com are listed below. To calculate actual bearing clearance, use the following formula:
BC = IDBT – ODC – (2 x BT)
BC = bearing clearance
IDBT = inside diameter of bearing tunnel (housing bore)
ODC = outside diameter of crank journal
BT = bearing thickness
Here is a chart of Honda B series bearing thickness by color:
Main Bearing thickness by color
- Blue 2.013-2.010 mm 0.0793”- 0.0791”
- Black 2.010-2.007 mm 0.0791”- 0.0790”
- Brown 2.007-2.004 mm 0.0790”- 0.0789”
- Green 2.004-2.001 mm 0.0789”- 0.0788”
- Yellow 2.001-1.998 mm 0.0788”- 0.0787”
- Pink 1.998-1.995 mm 0.0787”- 0.0785”
- Red 1.995-1.992 mm 0.0785”- 0.0783”
Rod bearing thickness by color
- Blue 1.510-1.507 mm 0.0594”- 0.0593”
- Black 1.507-1.504 mm 0.0593”- 0.0592”
- Brown 1.504-1.501 mm 0.0592”- 0.0591”
- Green 1.501-1.498 mm 0.0591”- 0.0590”
- Yellow 1.498-1.495 mm 0.0590”- 0.0589”
- Pink 1.495-1.492 mm 0.0589”- 0.0587”
- Red 1.492-1.489 mm 0.0587”- 0.0586”
