Cummins QSV91G vs Guascor G-86EM
The Cummins QSV91G and Guascor G-86EM are both natural gas generator engines in a similar power class. Both are rated at roughly 2,508 kVA. Displacement is 91.6 L versus 86 L. The table below compares their full specifications side by side.
| Specification | Cummins QSV91G | Guascor G-86EM |
|---|---|---|
| Headline rating | 2,500 kVA | 2,515 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | 2,000 kWe | 2,012 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 91.6 L | 86 L |
| Configuration | V18 | V12 |
| Cylinders | 18 | 12 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | United States | Spain |
Choosing between Cummins QSV91G and Guascor G-86EM
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Guascor G-86EM has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.