spitfiremk1uk
Active Member
- Posts
- 144
If you are still thinking 2.25 then here is my personal experience. I learned to drive with this car and it is still in the family.
Series 2a 109.
Capacity std 2286 cc
8:1 cylinder head machined/skimmed 100 thou (2.5mm)
Gas flowed and port matched inlet and exhaust manifolds.
Everything else std.
Acceleration is transformed. Now you could almost race (maybe not win but hey) boy racers from the lights.
21/22 mpg Accuratly measured over thousands of miles. My father was a test driver for a truck manufacturer records are his thing!
Motorway cruise was an easy 70 capable of reaching the main beam warning light on a series speedo. (I will leave you to decide how fast that actualy was).
Vehicle was fitted with freewheeling front hubs and a fairy overdrive.
FOI the hubs would give 1 mpg difference.
The overdrive would give almost 2 mpg and a higher cruise speed.
The record keeping borders on the "anal" every mile the vehicle ever travelled is logged and every penny of fuel recorded. He used the vehicle from 1976 up until 89 as a daily drive.
The ideas about engine mods came from an old landy magazine where some tuning guys made a lightweight REALLY light weight, had a new cam made for the engine, twin carbs, skimmed 180 thou! from the cylinder head and gas flowed, port matched and used tube manifolds to enter safari races back in the day.
I dont remember who did this but they did very well against scabby v8 transplanted into a series bus.
Makes you wonder about how good you can get using ceramic coatings etc?
Series 2a 109.
Capacity std 2286 cc
8:1 cylinder head machined/skimmed 100 thou (2.5mm)
Gas flowed and port matched inlet and exhaust manifolds.
Everything else std.
Acceleration is transformed. Now you could almost race (maybe not win but hey) boy racers from the lights.
21/22 mpg Accuratly measured over thousands of miles. My father was a test driver for a truck manufacturer records are his thing!
Motorway cruise was an easy 70 capable of reaching the main beam warning light on a series speedo. (I will leave you to decide how fast that actualy was).
Vehicle was fitted with freewheeling front hubs and a fairy overdrive.
FOI the hubs would give 1 mpg difference.
The overdrive would give almost 2 mpg and a higher cruise speed.
The record keeping borders on the "anal" every mile the vehicle ever travelled is logged and every penny of fuel recorded. He used the vehicle from 1976 up until 89 as a daily drive.
The ideas about engine mods came from an old landy magazine where some tuning guys made a lightweight REALLY light weight, had a new cam made for the engine, twin carbs, skimmed 180 thou! from the cylinder head and gas flowed, port matched and used tube manifolds to enter safari races back in the day.
I dont remember who did this but they did very well against scabby v8 transplanted into a series bus.
Makes you wonder about how good you can get using ceramic coatings etc?
)
