305 SPRINT CAR FLAT TOP
PISTON DESIGN
- Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength
- Stronger than traditional designs, but up to 20% lighter
- Forged from low-silicon wrought 2618 aluminum alloy
- Accumulator grooves for improved ring seal
- Specifically designed for alcohol Sprint Car competition
RINGS INCLUDED
- Lightweight, low friction metric ring package included (file-to-fit)
- 1.2mm chrome steel top ring, 1.2mm cast iron 2nd ring, 2.5mm standard tension oil ring
PINS AND LOCKS
- High quality 2.250" pin further reduces reciprocating weight
- Carbon steel wire locks included
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305 SPRINT CAR FLAT TOP
Std Bore: 3.736
Ring Package: 1.2mm, 1.2mm, 2.5mm Premium Rings Included
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| Part # |
CID |
Bore |
Stroke |
Rod
Lgth. |
Block
Ht. |
Comp.
Ht. |
| Head Cubic Centimeters |
| 62cc |
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| Compression Ratio |
|
Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
 |
| 306842 |
308 |
3.756 |
3.480 |
5.700 |
9.000 |
1.560 |
9.7 |
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-3.1 |
Call |
M |
0.020 |
JC2808-3760 |
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| 293532 |
310 |
3.766 |
3.480 |
5.700 |
9.000 |
1.560 |
9.7 |
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-3.1 |
378 |
|
0.030 |
JC2808-3770 |
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| 293533 |
312 |
3.776 |
3.480 |
5.700 |
9.000 |
1.560 |
9.7 |
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-3.1 |
381 |
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0.040 |
JC2808-3780 |
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| 295562 |
313 |
3.786 |
3.480 |
5.700 |
9.000 |
1.560 |
9.8 |
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-3.1 |
385 |
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0.050 |
JC2808-3789 |
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| 293534 |
315 |
3.796 |
3.480 |
5.700 |
9.000 |
1.560 |
9.8 |
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-3.1 |
389 |
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0.060 |
JC2808-3799 |
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- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.