Quote:
Originally Posted by iPhoneEngineer
So after more driving today, the vibration is not always present--it may be the A/C compressor, but it wouldn't make any sense to me if the car didn't disengage the magnetic clutch when going WOT. Even my Supra did that. But, the fact stands that the vibration doesn't always occur and I think the differing factor may be A/C (I'll test this later).
A new video is uploading, but the in-car GoPro didn't result in that much better sound. Nonetheless you can see the tachometer so it's somewhat interesting.
I'm wondering if I'm properly developing full power, as on a dry road, my tires are holding the power even in 1st gear! This could be a testament to the Super Sports, but that excuse is a lot more reasonable for dismissing lack of 2nd-gear slip than 1st-gear. The car has gotten a fair amount of driving in even since the pulley change, so while the computer is still adapting I'm not sure it is the full explanation. Beedub & Roffle: have a look at the video (I'll edit this post when it's up) and let me know if the pulls are slower than you would expect (most of them that go to 5k+ are WOT in either 1st or 2nd).
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this thing needs to go back on the dyno no question, i could cut loose with vt-1?? vt2 for me renders first useless.....look at the very start of this clip, you will see my cut loose my ps2 in 25 deg c heat so they were very sticky, you can just see a haze of tyre behind the car as they spin up...... bear in mind this was VT1???? with 265 section rear ps2.
now with vt2 im finding first gear pretty much useless BUT...... you have a very different climate to me here in the UK, maybe this has something to do with it??, but im finding no trouble breaking traction in first and also the change to second..... i need to make you a video clip...driving with traction control on makes the car useless as its constantly on making progress very very slow....... iphone get yourself a cheap mecanical boost gauge, run it down the windshield and tap the rear vacuum line, this will allow quick periodic checks of boost then you simply reconnect the line using a i piece replacing the T piece that comes with the gauge, this is what i did for a year when i couldnt afford my gauge setup....... i know you were down alittle but i think your looseing boost somewhere.... i cant say how important the gauges are to this setup..... you could be running 5psi and simply not know, each PSI on this high compression engine makes a good amount of horsepower but something is not right imo....... then again i dont know how much temp is effecting HP/Grip levels, add to the fact im running 8psi compared to your 6.5psi?? i dunno, id like to know where you 0.5psi is going??
im on pss with a 265 rear tyre..... a 500bhp car with sub 1400kg should easily be able be able to slip the tyres in first.... something is not right.
this is vt1 445, watch the first 10 seconds coming out the gate