Home heroes Stewart Robb Snr and Ross Napier dominated on the SBD Motorsport MSA British Sprint Championship’s return to Ingliston, which for a long time was the home of motor racing in Scotland.On Saturday Stewart Robb Snr took the top 12 run-off victory with a late second run charge, despite a broken exhaust pipe and stiff competition from both Wallace Menzies and Ross Napier. Terry Holmes took fourth ahead of the two-litre battle, which was resolved in favour of former Formula Ford racer Colin Birkbeck.The Scottish domination continued on Sunday when Napier reset the Outright Course Record with another second run charge. Menzies was the runner-up once again, with Stewart Robb Jnr beating his father to third. Mark Smith won the two-litre contest, while Gary Thomas again scored points aboard his 1100cc Force.Results - Saturday1 Stewart Robb Snr (4.0 Pilbeam-Judd KV MP88) 37.77s2 Wallace Menzies (2.7 DJ Firestorm-Cosworth) 38.44s3 Ross Napier (3.5 Gould-Cosworth DFR GR37) 38.45s4 Terry Holmes (3.5 Lola-Judd/Swindon ERH) 39.87s5 Stewart Robb Jnr (4.0 Pilbeam-Judd KV MP88) 40.33s6 Colin Birkbeck (2.0 Dallara-Vauxhall 301) 40.35s7 Mark Smith (2.0 Reynard-Vauxhall/Swindon 903) 40.38s8 Tom Potter (1.0T Jedi/Suzuki Mk4) 40.62s9 Gary Thomas (1.1 Force-Suzuki PT) 41.78s10 Graham Porrett (3.5 Lola-Judd/Swindon ERH) 41.82s11 Phil Lynch (2.0 Dallara-Vauxhall/JRE 301) 42.53s12 Jonathan Toulmin (1.5 Force-Suzuki/TTS PT) 43.29sResults - Sunday1 Ross Napier (3.5 Gould-Cosworth DFR GR37) 37.60s2 Wallace Menzies (2.7 DJ Firestorm-Cosworth) 37.84s3 Stewart Robb Jnr (4.0 Pilbeam-Judd KV MP88) 38.36s4 Stewart Robb Snr (4.0 Pilbeam-Judd KV MP88) 38.41s5 Tom Potter (1.0T Jedi/Suzuki Mk4) 39.20s6 Mark Smith (2.0 Reynard-Vauxhall/Swindon 903) 40.03s7 Colin Birkbeck (2.0 Dallara-Vauxhall 301) 40.50s8 Phil Lynch (2.0 Dallara-Vauxhall/JRE 301) 40.85s9 Roy Napier (3.5 Gould-Cosworth DFR GR37) 40.99s10 Gary Thomas (1.1 Force-Suzuki PT) 41.91s11 Jonathan Toulmin (1.5 Force-Suzuki/TTS PT) 42.03sTerry Holmes (3.5 Lola-Judd/Swindon ERH) DNSChampionship positions (provisional) after Round 4 1 Stewart Robb Snr – 59 points2 Tom Potter – 353 Mark Smith – 30= Ross Napier – 305 Stewart Robb Jnr – 286 Terry Holmes – 27