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Chris' '90 Toyota Celica All-Trac Turbo (aka "The Shuttle")
The Shuttle's JUN 2.2L Engine Build Sheet
Updated: February 11, 2021

Notice: Before embarking upon your own 3S-GTE build-up, I strongly encourage you to consult a professional engine builder regarding the suitability of this information for your engine.  This information is provided without consideration of any application other than my own.  I offer this data merely as a reference in the sprit of sharing with others who may follow in my path.

Short-block Specs

Bearing Clearances Specs Actual
Rods

Spec: 0.0009 - .0022"
Opt: 0.001181 - 0.00126"

0.0012"
Mains Journals 1,2,4,5
Spec:
0.0007 – 0.0015"
Opt: 0.00098 – 0.00102"
1 2 4 5
.0012" .0017" .0015" .0014"
Journal 3
Spec:
0.0011 – 0.0019"
Opt: 0.0015"
.0018"
Thrust

Spec: 0.00079 – 0.07953”
Opt: 0.0039

.004"

Ring End Gap Specs Actual
Top .015.017"  1 2 3 4
.015" .015" .017" .016"
Second .010 – .011" .0105" .0105" .0105" .0105"
Oil .008" .008" .008" .008" .008"

Other Specs

Other Clearances Specs Actual
Piston to cylinder wall .0023 - .0027" .0025"
Piston to valve Clearance minimum .125" during a full rotation of the engine. .125-.175" as measured

Camshaft and Valvetrain Specs

Cam Specs Stock 3S-GTE Cams HKS Cams
Lift Duration Lift Duration
Intake .3374" 241 / 201 @ .050" 9.2 mm / .362" 272
Exhaust .33906" 253 / 202 @ .050"

Valve Springs Toyota spring Engle spring (p/n 361 inner)
Installed height 1.354" 1.354"
Free length 1.731" 2.02"
Collapsed height .957" < .850"
Diameter 1.079" 1.090" (ID .825")
Max. allowable lift 1.354 - .957 = .397" 1.354 - .850 = .504" / 12.4 mm
Valve spring clearance .397 - .335 = .062" (stock cams)

with Blitz cams (too tight!)
Intake      : .397 - .376 = .021"
Exhaust :  .397 - .360 = .037"

.504 - .376 = .128"   Plenty!
Pressure at seat 55 lbs. (new);  45 lbs. (used) 80 lbs. (new)
Pressure at full lift 80 lbs. with Blitz 264 cams (no longer using these cams)
Intake: 125 lbs
Exhaust: 120 lbs.

Valvetrain Mass (in grams) Stock   JUN 3S-GTE  
Intake   Exhaust   Intake   Exhaust  
Valves (stock Toyota) 48.1 39.1 - -
Springs
(stock Toyota vs. Engle)
37.2 37.2 32.6 32.6
Retainers
(stock Toyota vs. JUN titanium)
12.8 12.8 6.9 6.9
Keepers (stock Toyota) 1.2 1.2 - -
Bucket (stock Toyota) ** ** - -
Lash shim (typical) ** ** - -
Total mass ?? ?? - -
Weight savings 10.5 grams saved with the Engle spring and JUN retainers.  
Note (**) - Not measured during rebuild.  If I can find another scale, I will measure and post the results.

 

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