Video: 4th gear, 33" tyres 3.9:1 Diff. There's a few more vids I'll post when I have time.
Hi all, we have been having some fun lately racing a Nissan Patrol fitted with a 1HD-FTE. Built and owned by Mark Murray of HP Diesel.
Performance has met our high expectations in real use however it won't hit a dyno until December.
Running a calculated "just over" 1000nm engine torque at 2100rpm and ~ 350whp, it was very competitive in the race last weekend (Pirtek Three Spings).
Unfortunately only raced in 3 loops (~ an hour each). First lap did a tyre, second lap fine. 3rd lap diff hit oil drain landing after a big jump ending the race.
On the one good lap Mark was fastest in class 7 and 8 and was catching the faster buggies on the straits, loosing them on the rough stuff. Only diesel in the event.
All in all the latest 55mm turbine (replacing the earlier Grunter and Bad Boy 52mm versions) off the shelf Bad Boy spec turbo performed without fault despite being punished. Max speed according to GPS speedo was "only" 175km/h but it was very muddy conditions.
A custom turbo is in the works to replace the Bad Boy Extreme and is aimed to be raced at 50psi with ~ 380-400whp!
Testing video (dry conditions) is on Facebook "Gturbo Diesel Performance"
Even I am suprised at just how quick this brick on wheels is. In the videos (on at least one of them) you can hear the on/off throttle response.
As a result and due to recent design improvements, for all 4.2L engines, all Grunter Extremes are warranted safe to 32psi, Bad Boy safe to 35psi and Bad Boy Extreme safe to 38psi.