grussMany strange looks from people which was to be expected i don't think anyone had ever seen a turbo hanging where the rear silencer used to be. In answer to your first thought - no there isn't any lag and it spools up quickly !
Why remote mount? Well the 205 1.9 engine wasn't designed for big boost and turbo heat it's open block design and exhaust valves see to that. Therefore we decided to look at remote mounting. Unfortunately the ideal place near the c of g longditudal location and below (i.e under the gearstick) offered no space. We decided to move the compressor further back. In the end the removal of the rear silencer saved some weight and meant the net weight gain of adding the turbo at the rear instead of in the front was less. Plenty of aircraft, bikes and cars dating back to the 80's have mounted turbochargers below the sump level which presents a challenge with scavenging the oil. Much like a dry sump relocates oil from the harsh environment of the engine, remote mounting a turbo protects the engine from it's huge heat soak and complicated plumbing with limited space.
Ultimately the best place for a turbo is often in the engine bay but remote mounting whether at the end of the downpipe, in place of the centre silencer or rear mount turbo in place of the rear silencer offers flexibility, lower cost and also benefits for racing with lower weight, lower c of g and cooler running.
For the initial sprint the car was not rolling roaded - it was operated with no dump valve, no intercooler and no bleed valve. At just 0.38 bar it should be achieving around 170hp and 170lb torque. The performance figures so far (drag strip will confirm in future) are 0-60 sub 6 and 30-70 around 4.5 seconds. The car is very quick and by keeping standard compression there is no lag with quick spool from 1500rpm.
These Vertpower conversions aim to offer a blend of performance with environmental conscience as the intention will be widespead installs to take advantage of bioethanol on smaller engined cars. Preferably older cars as they already exist therefore the biggest chunk of CO2 is eliminated. The 205 has actually improved light throttle economy with the compressor making up for the otto cycle engines inherent deficiency of operation below full throttle. Don't get me wrong though. I'm not about to suggest diesels are better....Many strange looks from people which was to be expected i don't think anyone had ever seen a turbo hanging where the rear silencer used to be. In answer to your first thought - no there isn't any lag and it spools up quickly !
Why remote mount? Well the 205 1.9 engine wasn't designed for big boost and turbo heat it's open block design and exhaust valves see to that. Therefore we decided to look at remote mounting. Unfortunately the ideal place near the c of g longditudal location and below (i.e under the gearstick) offered no space. We decided to move the compressor further back. In the end the removal of the rear silencer saved some weight and meant the net weight gain of adding the turbo at the rear instead of in the front was less. Plenty of aircraft, bikes and cars dating back to the 80's have mounted turbochargers below the sump level which presents a challenge with scavenging the oil. Much like a dry sump relocates oil from the harsh environment of the engine, remote mounting a turbo protects the engine from it's huge heat soak and complicated plumbing with limited space.
Ultimately the best place for a turbo is often in the engine bay but remote mounting whether at the end of the downpipe, in place of the centre silencer or rear mount turbo in place of the rear silencer offers flexibility, lower cost and also benefits for racing with lower weight, lower c of g and cooler running.
For the initial sprint the car was not rolling roaded - it was operated with no dump valve, no intercooler and no bleed valve. At just 0.38 bar it should be achieving around 170hp and 170lb torque. The performance figures so far (drag strip will confirm in future) are 0-60 sub 6 and 30-70 around 4.5 seconds. The car is very quick and by keeping standard compression there is no lag with quick spool from 1500rpm.
These Vertpower conversions aim to offer a blend of performance with environmental conscience as the intention will be widespead installs to take advantage of bioethanol on smaller engined cars. Preferably older cars as they already exist therefore the biggest chunk of CO2 is eliminated. The 205 has actually improved light throttle economy with the compressor making up for the otto cycle engines inherent deficiency of operation below full throttle. Don't get me wrong though. I'm not about to suggest diesels are better....
obelix