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Posted

Hey, im just wondering what size engine I might have, its a T-rex top end with 69mm pistons and stock stroke crank.

 

 

any info would be great,

 

thanx, Paul

Posted

here you go

 

Bore ....64 .....66 .....68 ....68.5.....69 .....70 .....71 .....72 ....72.5 ...73 ....73.5 ...74 .....75 ....75.5....76 .....77 .....78

 

Stroke

 

54....... 347.4 369.5 392.2 398.0 403.8 415.6 427.6 439.7 445.9 452.0 458.2 464.5 477.1 483.5 489.9 502.9 516.1

 

+

 

4 58.... 373.2 396.9 421.3 427.5 433.8 446.4 459.3 472.3 478.9 485.5 492.2 498.9 512.5 519.3 526.2 540.2 554.3

 

5 59.... 379.6 437.9 479.4 434.9 508.5 531.1 554.3 578.2 487.1 602.7 500.7 627.9 653.8 528.3 680.5 707.8 735.9

 

6 60.... 386.0 410.5 435.8 442.2 448.7 461.8 475.1 488.6 495.4 502.2 509.2 516.1 530.1 537.2 544.4 558.8 573.4

 

7 61.... 392.5 417.4 443.1 449.6 456.2 469.5 483.0 496.7 503.6 510.6 517.6 524.7 539.0 546.2 553.4 568.1 583.0

 

8 62.... 398.9 424.2 450.3 457.0 463.7 477.2 490.9 504.9 511.9 519.0 526.1 533.3 547.8 555.1 562.5 577.4 592.5

 

9 63.... 405.3 431.1 457.6 464.3 471.2 484.9 498.9 513.0 520.2 527.4 534.6 541.9 556.7 564.1 571.6 586.7 602.1

 

10 64... 411.8 437.9 464.9 471.7 478.6 492.6 506.8 521.2 528.4 535.7 543.1 550.5 565.5 573.1 580.7 596.0 611.6

 

12 66... 424.6 451.6 479.4 486.5 493.6 508.0 522.6 537.4 544.9 552.5 560.1 567.7 583.2 591.0 598.8 614.7 630.7

 

 

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