lol this 3.0 vs 3.2 is just as silly as my thread
anyways...some developments and testing results tht I'd like you to peruse and make comments as to whether theres a problem...
so, was quiet at work today so plummed in the vacuum gauge straight from the brake servo (and tee'd it in so it was all still plumbed up)....... got car up to temp and at idle it was holding a ROCK STEADY vacuum of 20inHG. Perfect!!!
I then brought the rpm's up to 3k and held it there.....again, rock steady vacuum of 23inHG. PERFECT! This confirms there's zero exhaust restrictions, zero vacuum leaks and the engine is very healthy. really really pleased actually.
I blipped the throttle a few times and all vacuum dropped to 0 and came back to a steady 20inHG at idle. i believe this to also be completely normal.
while car was in i got my infrared thermometer out and got one of the mechanics to jump in and hold it at 2500k rpm. i checked the inlet and outlet temp. of both cats. now, my understanding is that the outlet should be 100oF hotter than the inlet. however, i got similar readings on both....
drivers cat:
inlet 180oF
outlet 135oF
pass. cat:
inlet 230oF
outlet 180(ish)oF
Would this have any bearing on performance?
So anyone got any advice / opinions on my testing (other than shut up )
so we got an engine that's performing well with no exhaust blockages. very well in fact and backed up by evidence. but we have two cats that don't appear to be working correctly (certainly according to the infrared test.
so. can non performing cats affect acceleration? could this be a worn/wearing transmission issue? could this be a worn diff problem?
discuss
The 2.5 will struggle to better 10 seconds with a'portly' driver at the helm.
I am actually losing some weight. lost 10lb since being full time at the garage
ok, lets look at this in a different way.
I am totally satisfied my engine is doing really well. and I have lots of evidence to support this.
SO
This ''issue'' is one of the following.....
1.) the transmission has a fault/is worn and is not transmitting the engines power to the wheels
2.) the diff is worn (just seen taxi al's reply so this can be scratched off the list)3.) as you suggested before opti, the way I timed the 0-60 dash is way off and actually my performance testing/timing is very flawed and the car's actually performing bang on if timed correctly
4.) the info on original Vauxhall testing is flawed: the current boss (had personal reply
) says they add on 200kg to the kerb weight including the driver. however ian coomber (importantly head of Vauxhall when the omega was launched) SURMISED that the car would be tested with driver and low fuel to improve figures....if thiss the case my initial testing is good!