I will be at Western Sydney dragway tomorrow night with my circut car testing a new engine . I have assembled a 2443cc engine specifically for the Portland weekend in a couple of weeks time and will give it a run to see how it will go . This engine is based on an original ARPM case , 88mm flanged crank , 5.7" Carrillo rods , JE pistons , AA long barrels , Fk 87 cam with Autocraft 1.4 rockers , Autocraft Pro heads with 48 x 38 titanium valves and 14.27 compression . I have a set of 48mm IDA carbs with 42mm venturies , 180 mains , 205 airs and 60 idle jets . I have a Scat 1 3/4" ceramic header with a fatboy muffler for the street meet only because of noise restrictions . This engine was dyno'd last week with 198 HP and 311 ft/lb's at the wheels . I will try to put the car on the scales , but should be around 1900 lb's with me . I will try to up-date at the track if time allows , ROD.
Hi Rod
good luck with it,I am interested to see how that combo works out,
still minus 1-2 degress c here so no racing for a while yet
cheers richie,uk
Howd you go ???
Ritchie , good to see you are freezing while we are sweating . Ian , all went well sort of .
I had a good night at WSID and with the high temps in Sydney the track was very sticky . The first run was just a shakedown to run the car , and with
20 psi in the tyres , 6000 rpm on the 2 step , 1.62 60ft , 8.0 @ 89.22 1/2 track and 12.42 @ 110.31 at the end with a missed shift into 2nd .
All good so 2nd run with 18 psi in the tyres , 6000 rpm on the 2 step , 1.67 60ft , 7.59 @ 91.82 1/2 track and 11.92 @ 112.46 .
On the 3rd run I lowered the tyres again to 16 psi , 6000 rpm on the 2 step , 1.68 60ft , 7.56 @ 92.59 1/2 track and 11.87 @ 112.68 .
4th run I left the tyres @ 16 psi , and lifted the 2 step to 7000 on the launch to try to stop the car from bogging on the line , 1.65 60 ft , 7.88 @
88.62 1/2 track and 12.28 @ 111.17 with a missed shift into 2nd again .
5th and last run I left the tyres @ 16 psi , lifted the 2 step to 7500 rpm and with no burnout , launched the car to have it drive all over the lane
for about the first 60 feet . I drove it slowly back to the pits and I suspect I have either broken the welded diff or perhaps a CV joint . I am happy
with the outcome and will now remove the box for an inspection and possible replace the diff with a new aluminium spool . The car weighed in @ 715 kg
or 1820 lb/s with the driver on the startline and I have fitted some 8" hoosier slicks . I have a 3.1 first gear with the 3.88 R&P and I dont
quite have the power to make the car launch well . I am looking forward to the Portland Weekend in 2 weeks time , ROD.
Hi Rod, well done mate, 92.59mph 1/8 with more in it with a better 60ft to offer. On top of that spool and slicks.
Looks like your in for some fun at portland!!!
Aaron.
sounds good rod pretty descent no.s for first time out
with more to come with improvements
top work
see ya @ portland