Motorbreath
Also known as: Motor Breath, Motorbreath #15, Motorbreath 15, Mtrbrth15
Breeder: Pisces Genetics (Jimmy Nitz)
Motorbreath is a fuel-forward, indica-leaning hybrid created by Jimmy Nitz of Pisces Genetics by crossing a Chem D cut (gifted by Chemdog) with SFV OG Kush. The #15 phenotype rose to prominence as the standout keeper and is now the de facto representation of the line. It won 1st Place Recreational Hybrid at the 2015 THC Championship straight out of the gate and has since become a foundational parent in modern gas-forward breeding, with 75+ direct descendants catalogued on SeedFinder. Motorbreath is prized equally as top-shelf flower and as a hash-making cultivar thanks to its extreme resin output, dense trichome heads, and loud terp expression that carries through solventless extraction. Motorbreath's origin story traces back to the almost mythical provenance of its Chemdog parent. In the early 1990s, a grower purchased a bag of exceptional cannabis at a Grateful Dead concert, discovered seeds inside, and planted them, unwittingly giving birth to one of the most influential strains in modern cannabis history. Jimmy Nitz of Pisces Genetics recognized the potential in combining Chemdog's potent effects and unique chemical aroma with the balanced qualities of SFV OG Kush. Despite being indica-dominant, users frequently report a surprisingly balanced experience: an initial euphoric uplift that stimulates creativity and elevates mood, followed by profound physical relaxation that does not necessarily lead to sedation at moderate doses. The strain's versatility has made it popular for both daytime and evening use depending on dosage. The buds are dense and chunky with a spade-shaped structure, featuring minty green nugs contrasted by long, thin orange pistils and a heavy layer of frosty amber trichomes. Motorbreath has earned its place as a modern classic and has become an important parent in breeding programs, with its genetics appearing in numerous new crosses worldwide.
Lineage & Genetics
Cross: Chem D x SFV OG Kush
Chem D is one of the most celebrated phenotypes of the Chemdog line, originating from seeds found in a bag of exceptional cannabis purchased at a Grateful Dead concert in the early 1990s. It is known for its aggressive chemical-fuel aroma, sky-high potency, and heavy trichome production. SFV OG Kush (San Fernando Valley OG) is an indica-dominant OG Kush phenotype selected in the San Fernando Valley, delivering lemon-pine aromatics, earthy hash undertones, and a sturdy, compact plant structure. The combination concentrates Chem D's kerosene-heavy gas with SFV OG's citrus-pine complexity and structural reliability.
Lineage Dispute
Some sources list the Chemdog parent generically as 'Chemdog' or 'Chemdawg,' but multiple breeder-adjacent sources confirm the specific cut used was Chem D, given directly to Jimmy Nitz by Chemdog himself.
Terpene Profile
Myrcene —
Limonene —
Beta-Caryophyllene —
Humulene —
Pinene —
Aroma: Unapologetically gassy and diesel-drenched. The top note evokes a freshly opened fuel can blended with industrial solvent — a direct inheritance from Chem D. SFV OG enriches the bouquet with lemon-pine zest, wet earth, and faint herbal sour. Undertones of garlic, rubber, and sulfur emerge on the break. A peppery kick from caryophyllene adds complexity. One of the loudest noses in cannabis; indoor grows require carbon filtration.
Flavor: Opens with an unyielding diesel-first hit, quickly joined by lemon-pine and earthy hash. A zesty, solvent-like snap on the inhale mellows into resinous conifer and warm soil. Peppery tingle on the exhale with a faint metallic edge in the aftertaste. The smoke is thick, oily, and palate-coating. A proper flush and slow cure preserves the lemon-pine top notes alongside the fuel base.
Effects & Experience
Onset: Fast-acting. An immediate cerebral lift with tingly euphoria and mental brightening, driven by limonene. The head rush is noticeable within seconds of the first hit.
The initial sativa-leaning uplift is short-lived. Within 15–20 minutes the SFV OG parentage asserts itself with a deeply physical, weighted relaxation that gets more pronounced over time. Full-body couchlock sets in — muscles loosen, tension releases, and a steady sedation takes over. Users describe an 'insane level of couchlock' balanced by pleasant euphoric contentment. Not a productive strain; this is deliberate, end-of-day consumption.
Duration: Long-lasting. The body-heavy effects persist for 2–3+ hours. Tolerance builds slowly relative to other high-THC cultivars.
Commonly Reported Uses
Grower's Notes
Motorbreath is an indica-dominant hybrid (approximately 70% indica / 30% sativa) created by Jimmy Nitz of Pisces Genetics by crossing Chemdog (also written Chem D or Chemdawg) with SFV OG Kush. The most widely grown cut is Motorbreath #15. The strain concentrates the kerosene-heavy aromatics of Chemdog with the piney, citrus-forward complexity of San Fernando Valley OG, producing one of the most intensely gassy strains in cultivation. THC levels typically range from 20% to 30%.
Flowering Time and Harvest
Indoors, Motorbreath flowers in 8 to 10 weeks (some phenotypes extend to 11 weeks), producing moderate to high yields. Under optimized conditions with LED lighting at 300 to 350 watts per square meter, yields can reach 500 to 650 grams per square meter (19 to 23 ounces per square yard). More conservative environments typically yield 300 to 400 grams per square meter. Outdoors, the plant can reach an impressive 8 to 10 feet tall if given sufficient space. Outdoor harvests land during the first two weeks of October in the Northern Hemisphere, with potential yields of up to 450 to 650 grams per plant when germinated in early spring.
Growth Structure and Training
The plant exhibits dense internodal spacing and a medium stature that responds exceptionally well to Screen of Green (SCROG), SOG, and topping techniques. These training methods improve light penetration and manage height. Lollipopping lower branches is recommended to redirect energy toward the primary colas. The robust structure features thick branches that naturally support the weight of the massive, dense buds, but additional support from trellis netting during late flower is still advisable.
Nutrient Management
Motorbreath is a versatile and relatively forgiving strain that adapts well to various cultivation techniques and tolerates higher doses of fertilizers than many cultivars. It shows good resistance to common pests and diseases. Feed with a balanced nutrient regimen during vegetation, shifting to slightly increased phosphorus during mid-to-late flower to support bud density and resin development.
Environment and Climate
Environmental conditions should emulate warm, Mediterranean-style climates. Maintain controlled humidity levels throughout flowering, targeting 50 to 60% during early-to-mid flower and reducing to 40 to 50% during the final weeks to prevent mold in the dense colas. Good ventilation and airflow are essential, particularly as dense bud sites form and tighten during weeks four through six. The pungent diesel and chemical aroma becomes extremely strong during flowering, making carbon filtration mandatory for indoor operations seeking odor control.
Drying and Curing
Monitor trichome development carefully. Target milky white trichomes with approximately 10 to 20% amber for optimal cannabinoid development. Post-harvest, slow dry in a climate-controlled room at 60 to 65 degrees Fahrenheit for 10 to 14 days. The trimmed buds should then be transferred to airtight containers for an extended cure to preserve the volatile terpenes. The dominant terpene profile is led by myrcene (earthy, musky), limonene (zesty citrus), and caryophyllene (spicy, peppery), creating a bold, intensely gassy aromatic experience.
History & Origin
Created by Jimmy Nitz of Pisces Genetics, an Oregon-based breeder who received a Chem D cut directly from Chemdog. Nitz crossed it with SFV OG Kush and hunted through multiple phenotypes before selecting #15 as the keeper for its extra-frosty trichome coverage and intensified gas profile. Motorbreath burst onto the competition scene immediately, winning 1st place Recreational Hybrid at the 2015 THC Championship. By 2019 it had placed 10th at the Emerald Cup (Mixed Light, grown by Josh D. of Santa Barbara). The strain earned a spot on Leafly's Top 100 Strains of All Time list. Its genetic stability and reliable terp expression made it a go-to parent in modern breeding, spawning 75+ documented crosses.
Awards & Recognition
- ●1st Place, Recreational Hybrid — 2015 THC Championship
- ●2nd Place, Recreational Indica — 2016 THC Championship
- ●2nd Place, Medical Indica Flower — THC Championship (Green Man Cannabis)
- ●10th Place, Mixed Light Flower — 2019 Emerald Cup (Josh D., Santa Barbara)
Notable Crosses
Strains bred using Motorbreath as a parent:
Frequently Asked Questions
7 common questions about Motorbreath
What is Motorbreath and what are its genetics?
Motorbreath is a hybrid cannabis strain (70% Indica / 30% Sativa) bred by Pisces Genetics (Jimmy Nitz). It is a cross of Chem D x SFV OG Kush, testing at 20–30% THC. Motorbreath is a fuel-forward, indica-leaning hybrid created by Jimmy Nitz of Pisces Genetics by crossing a Chem D cut (gifted by Chemdog) with SFV OG Kush. The #15 phenotype rose to prominence as the standout keeper and is now the de facto representation of the line.
What does Motorbreath smell and taste like?
Motorbreath's dominant terpenes are Myrcene. The aroma is described as unapologetically gassy and diesel-drenched. the top note evokes a freshly opened fuel can blended with industrial solvent — a direct inheritance from chem d. sfv og enriches the bouquet with lemon-pine zest, wet earth, and faint herbal sour. undertones of garlic, rubber, and sulfur emerge on the break. a peppery kick from caryophyllene adds complexity. one of the loudest noses in cannabis; indoor grows require carbon filtration.. The flavor profile features opens with an unyielding diesel-first hit, quickly joined by lemon-pine and earthy hash. a zesty, solvent-like snap on the inhale mellows into resinous conifer and warm soil. peppery tingle on the exhale with a faint metallic edge in the aftertaste. the smoke is thick, oily, and palate-coating. a proper flush and slow cure preserves the lemon-pine top notes alongside the fuel base..
What are the effects of Motorbreath?
Fast-acting. An immediate cerebral lift with tingly euphoria and mental brightening, driven by limonene. The head rush is noticeable within seconds of the first hit. The initial sativa-leaning uplift is short-lived. Within 15–20 minutes the SFV OG parentage asserts itself with a deeply physical, weighted relaxation that gets more pronounced over time. Duration is typically long-lasting. the body-heavy effects persist for 2–3+ hours. tolerance builds slowly relative to other high-thc cultivars.. Commonly reported uses include Insomnia, Chronic pain, Stress relief, Muscle tension.
How hard is Motorbreath to grow?
Motorbreath is rated intermediate difficulty. It flowers in 8-10 weeks, reaches medium-tall (up to 80 in.) in height, and yields 300-650 g/m² indoors. Best suited for indoor, outdoor environments.
What are the parent strains of Motorbreath?
Motorbreath is a cross of Chem D and SFV OG Kush. Chem D is one of the most celebrated phenotypes of the Chemdog line, originating from seeds found in a bag of exceptional cannabis purchased at a Grateful Dead concert in the early 1990s. It is known for its aggressive chemical-fuel aroma, sky-high potency, and heavy trichome production.
What strains were bred from Motorbreath?
Motorbreath has been used as a parent in several notable crosses, including Gator Breath, Jungle Breath, Motor City, Electric Punch, Bison Breath. Its genetics contribute to a wide range of modern cultivars.
Has Motorbreath won any cannabis awards?
Yes. Motorbreath has received recognition including 1st Place, Recreational Hybrid — 2015 THC Championship; 2nd Place, Recreational Indica — 2016 THC Championship; 2nd Place, Medical Indica Flower — THC Championship (Green Man Cannabis).
Sources & References (25)
- SeedFinder.eu — Motorbreath (Pisces Genetics) lineage and hybrids page
- Leafly — Motorbreath 15 strain page
- Carter's Cannabis — Cannabis Genetics Explained: Motorbreath article
- Canna Provisions — Motorbreath strain profile
- Mission Dispensaries — Motorbreath strain review
- Strainpedia — Motorbreath 15 page
- Sun-Clone.com — Motorbreath grow details
- Gentleman Toker — Motorbreath profile
- Rugged Roots Trading Post — Motorbreath strain page
- JointCommerce / Zamnesia — Motorbreath terpene detail
- Flower House (FLWR) — Motorbreath FLWR of the Month
- SeedsHereNow — Motorbreath strain review
- Grower's Notes cultivation sources:
- https://420vl.com/motorbreath-strain-ignite-your-senses-with-this-high-octane-cannabis-gem/
- https://www.carterscannabis.com/blog/genetics-blog-1/cannabis-genetics-explained-motorbreath-chemdog-x-sfv-og-the-history-and-story-of-breeders-jimmy-nitz-and-pisces-genetics-creation-120
- https://www.strainpedia.com/motorbreath-15/
- https://bulkgenetics.com/en/motorbreath/
- https://www.sun-clone.com/growingdetails/motorbreath
- https://www.leafly.com/strains/motorbreath
- https://weedmaps.com/strains/motorbreath
- https://www.ilovegrowingmarijuana.com/strains/motorbreath/
- https://www.allbud.com/marijuana-strains/indica-dominant-hybrid/motorbreath
- https://www.wikileaf.com/strain/motorbreath/
- https://seedfinder.eu/en/strain-info/motorbreath-15/pisces-genetics
- https://www.growdiaries.com/strains/motorbreath
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