The Engine Developments GV5 S2
And XV Changes Too
team took LMP1 honours in the LMES in 2005, powered by Engine Developments’
GV5, 5 litre V10 engine. The big V10 also powered the two Pescarolo
hybrids to dominant front row positions at Le Mans (admittedly with
restrictor advantages over the non-hybrid cars) – and very
nearly to the race win. The earliest version of the 5 litre engine
was a 24 hour race winner anyway - at Daytona in 2002, in Fredy
Lienhard's Dallara (sorry, that was the 4 litre).
The engine manufacturer
has just announced a significant change to the 5 litre V10, which
now becomes the GV5 S2. Here it is on the dyno.
The update consists of an entirely new and advanced
cylinder head design, which cuts weight at the top end by over 20
The considerable weight saving has been achieved
by producing a one piece casting for the entire cylinder head and
throttle system and by incorporating some design features from the
LMP2 class winning XV V8 engine. The revised V10 has a considerably
lower centre of gravity.
Pescarolo Sport and Creation Autosportif will use
the revised engines in their hybrid cars this year.
“We decided to go ahead with this new design
early last year,” explains John Judd, “having considered
many options as to how best to improve what is already the class
leading engine in LMP1. Highest in our priorities was reducing the
weight of the engine, but at the same time we did not want to take
any risks that would affect the engines’ fantastic reliability
record. We are very confident that this update will maintain our
edge over the competition, and we can’t wait to see it running
in the car!”
Engine Developments is also making some significant
performance improvements to the XV V8 engine, the LMP2 class winner
at Le Mans (in the RML MG Lola EX264). All XV customers will benefit
from the changes.
“Although we already know the XV has class
leading performance, you can’t afford to stand still in this
business,” states John Judd, “so we looked very closely
at all our data from 2005 and felt there were specific areas we
could improve on, and the results are extremely encouraging. We
have made some very significant power improvements.”
The competition in LMP2 gets stronger and stronger.