Eventually, in 1968, the new F4 technical regulations appeared. Their main items were 350 cc engines capacity limit and 200 kg minimal weight limit. As most Soviet single-seaters, F4 cars were produced at the TARK factory in Tallinn, being called Estonia-15. They were equipped with Izh motorcycle engines which had 347 cc capacity and produced about 32 hp at 6000 rpm. The weight of an Estonia-15 was 214 kg. Some E15 cars reached 150 kph.
In 1970, E15 was slightly modified and received the new index (15M). The production of F4 cars was stopped in 1976 or 1977, and Soviet F4 championship was respectively discontinued - this happened two or three years later. F4 was also called F. Molodezhnaya - it means 'Junior' in rough translation, so it was destined mainly for young drivers. But, as a rule, a gifted young racing driver drove in F4 for one or two seasons, then he transferred to F3 or F1. But those who hadn't enough talent stayed in F4 and continued driving for another number of years. Given all that, in the late 1970s most F4 drivers were over thirty! This is why F4 championship was discontinued.
1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 |
Points system: not available |
Rounds: |
1. Kaunas, 24/7-26/7 |
2. Leningrad, 1/8-2/8 |
Pos. | Driver | Car/Engine | 1 | 2 |
1 | M. Laiv (Tallinn) | Estonia-3 IMZ | ||
2 | V. Beisans (Riga) | n/a | ||
3 | V. Aksionaitis (Vilnus) | n/a |
Points system: not available |
Rounds: |
1. Kaunas, 13/8-16/8 |
2. Riga, 20/8-23/8 |
3. Tallinn, 27/8-30/8 |
Pos. | Driver | Car/Engine | 1 | 2 | 3 |
1 | J. Vinte (Riga) | n/a | |||
2 | V. Tyagunenko (Riga) | n/a | |||
3 | L. Lipovski (Lithuania) | n/a |
Points system: not available |
Rounds: |
1 & 2. Leningrad |
3 & 4. Kaunas |
Pos | Driver | Car/Engine | Rnd 1 | Rnd 2 | Rnd 3 | Rnd 4 |
1 | A. Abolkans (Riga) | n/a | 4 | 3 | 2 | 2 |
2 | V. Tyagunenko (Riga) | n/a | 1 | - | 3 | 1 |
3 | J. Vinte (Riga) | n/a | 2 | 1 | - | 4 |
Points system: not available |
Rounds: |
1. Riga, 24/7-29/7 |
2. Leningrad, 31/7-5/8 |
Pos | Driver | Car/Engine | Rnd 1 | Rnd 2 |
1 | M. Nymmik (Tallinn) | Estonia-15 Izh | 1 | 1 |
2 | P. Laansoo (Tallinn) | Estonia-15 Izh | 5 | 2 |
3 | R. Zukakishvili (Tbilisi) | Estonia-15 Izh | 2 | 5 |
4 | P. Evstafiev (Riga) | Estonia-15 Izh | 6 | 3 |
5 | E. Dzherbinov (Tashkent) | Estonia-15 Izh | 8 | 4 |
6 | J. Adamson (Tallinn) | Estonia-15 Izh | 4 | 9 |
Points system: 10-7-5-3-2-1 |
Rounds: |
1. Minsk, 22/5-26/5 |
2 & 3. Riga, 16/7-21/7 (two different tracks) |
4. Leningrad, 24/7-28/7 |
Pos | Driver | Car/Engine | Rnd 1 | Rnd 2 | Rnd 3 | Rnd 4 | Pts |
1 | V. Generalov (Leningrad) | Estonia-15 Izh | 2 | 1 | 4 | 3 | 25 |
2 | A. Vaino (Estonia) | Estonia-15 Izh | - | 3 | 1 | 2 | 22 |
3 | P. Laansoo (Tallinn) | Estonia-15 Izh | 3 | 2 | 3 | 4 | 20 |
4 | J. Adamson (Tallinn) | Estonia-15 Izh | 1 | - | 2 | 5 | 19 |
5 | V. Kiselev (Grozny) | Estonia-15 Izh | - | 17 | 5 | 1 | 12 |
6 | A. Veski (Tallinn) | Estonia-15 Izh | 4 | 5 | 7 | - | 5 |
Points system: not available |
Rounds: |
1. Minsk, August |
Pos | Driver | Car/Engine |
1 | P. Laansoo (Tallinn) | Estonia-15 Izh |
2 | A. Vaino (Estonia) | Estonia-15 Izh |
3 | M. Lvov (Leningrad) | Estonia-15 Izh |
4 | A. Veski (Tallinn) | Estonia-15 Izh |
5 | V. Resetnieks (Latvia) | Estonia-15 Izh |
6 | N. Kazakov (Moscow) | Estonia-15 Izh |
Points system: not available |
1. Minsk, 4/6-6/6 |
2. Riga, 20/8-22/8 |
3. Tallinn, 27/8-29/8 |
Pos | Driver | Car/Engine | Rnd 1 | Rnd 2 | Rnd 3 |
1 | P. Laansoo (Tallinn) | Estonia-15 Izh | 4 | 1 | 1 |
2 | M. Reintam (Tallinn) | Estonia-15 Izh | 1 | 4 | 2 |
3 | J. Adamson (Tallinn) | Estonia-15 Izh | 3 | 3 | 15 |
4 | E. Lindgren (Moscow) | Estonia-15 Izh | 5 | 8 | 9 |
5 | V. Kiselev (Grozny) | Estonia-15 Izh | 2 | - | 6 |
6 | E. Untera (Tallinn) | Estonia-15 Izh | - | 6 | 3 |
Points system: not available |
Rounds: |
1. Minsk |
2. Riga |
3. Tallinn |
Pos | Driver | Car/Engine | Rnd 1 | Rnd 2 | Rnd 3 |
1 | E. Salm (Latvia) | Estonia-15M Izh | 5 | 6 | 3 |
2 | Yu. Shibanov (Leningrad) | Estonia-15 Izh | 7 | 1 | 10 |
3 | E. Untera (Tallinn) | Estonia-15M Izh | 1 | - | 1 |
Points system: not available |
Rounds: not available |
Pos. | Driver | Car/Engine |
1 | E. Salm (Latvia) | Estonia-15M Izh |
2 | I. Barda (Riga) | Estonia-15M Izh |
3 | K. Tupe (Lithuania) | Estonia-15M Izh |
Points system: not available |
Rounds: not available |
Pos. | Driver | Car/Engine |
1 | T. Napa (Riga) | Estonia-15M Izh |
2 | T. Teesalu (Tallinn) | Estonia-15M Izh |
3 | T. Asmer (Tallinn) | Estonia-15M Izh |
4 | I. Barda (Riga) | Estonia-15M Izh |
5 | Yu. Shibaev (Leningrad) | Estonia-15M Izh |
6 | Kh. Yurshevski (Riga) | Estonia-15M Izh |
Points system: not available |
Rounds: |
1 & 2. Minsk |
3 & 4. Riga |
Pos. | Driver | Car/Engine | Rnd 1 | Rnd 2 | Rnd 3 | 4 |
1 | T. Asmer (Tallinn) | Estonia-15M Izh | 4 | 1 | 1 | 2 |
2 | R. Sarap (Tallinn) | Estonia-15M Izh | 1 | 2 | 2 | - |
3 | T. Napa (Riga) | Estonia-15M Izh | - | 3 | 5 | 1 |
4 | T. Teesalu (Tallinn) | Estonia-15M Izh | 2 | - | 6 | 3 |
5 | A. Visockas (Vilnus) | Estonia-15M Izh | 3 | 5 | 26 | 13 |
6 | V. Perenyuk (Leningrad) | Estonia-15M Izh | 5 | 6 | - | 8 |
Points system: not available |
Rounds: not available |
Pos. | Driver | Car/Engine |
1 | T. Asmer (Tallinn) | Estonia-15M Izh |
2 | E. Jurima (Tallinn) | Estonia-15M Izh |
3 | L. Tamsaar (Tallinn) | Estonia-15M Izh |
4 | R. Gudriks (Kandava) | Estonia-15M Izh |
5 | V. Perenyuk (Leningrad) | Estonia-15M Izh |
6 | T. Teesalu (Tallinn) | Estonia-15M Izh |
Points system: not available |
Rounds: |
1. Kiev, 29/5-2/6 |
Pos. | Driver | Car/Engine |
1 | J. Iva (Estonia) | Estonia-15M Izh |
2 | A. Stals (Latvia) | Estonia-15M Izh |
3 | E. Jurima (Estonia) | Estonia-15M Izh |
4 | A. Nappus (Estonia) | Estonia-15M Izh |
5 | A. Silis (Latvia) | Estonia-15M Izh |
6 | Z. Alexandravicius (Lith.) | stonia-15M Izh |
Points system: not available |
Rounds: |
?. Riga, 18/6-22/6 |
Pos. | Driver | Car/Engine |
1 | J. Oriste (Estonia) | Estonia-15M Izh |
2 | A. Silus (Latvia) | Estonia-15M Izh |
3 | Z. Alexandravicius (Lith.) | Estonia-15M Izh |
4 | V. Shilenkov (Ukraine) | Estonia-15M Izh |
5 | Ya. Lebedev (Latvia) | Estonia-15M Izh |
6 | A. Berzins (Latvia) | Estonia-15M Izh |