Soonto_HAS_soop Posted June 11, 2004 Share Posted June 11, 2004 Originally posted by Timwildman your speedo is diffrent to mine? http://homepage.ntlworld.com/timwildman/Nurburgring/RT25.jpg Yep it is, yours is the same as mine, it is the facelift, so it has the ODO in the centre of the speedo, and the push rod to reset the trip computer. Millhouse has the pre-facelift green numerical display where we have our engine light and "snow" mode lights etc. Ben.. Quote Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted June 11, 2004 Share Posted June 11, 2004 Originally posted by millhouse Yes, mines faster And has the largest most obvious "MPH" sticker I think I have EVER seen! Ben.. Quote Link to comment Share on other sites More sharing options...
Aerotop Dave Posted June 11, 2004 Share Posted June 11, 2004 Look at those white knuckles!! Quote Link to comment Share on other sites More sharing options...
millhouse Posted June 11, 2004 Share Posted June 11, 2004 Originally posted by Soonto"HAS"soop And has the largest most obvious "MPH" sticker I think I have EVER seen! Ben.. i need to change the dials to some nice blue and white ones Quote Link to comment Share on other sites More sharing options...
millhouse Posted June 11, 2004 Share Posted June 11, 2004 Originally posted by 200SX Boy Look at those white knuckles!! i was holding on for my life :D Quote Link to comment Share on other sites More sharing options...
Timwildman Posted June 11, 2004 Share Posted June 11, 2004 Originally posted by millhouse i was holding on for my life :D So what was supragal holding on to? notice no hands on my steering wheel, I was too busy sending a text to my mum. Quote Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted June 11, 2004 Share Posted June 11, 2004 Originally posted by Timwildman So what was supragal holding on to? notice no hands on my steering wheel, I was too busy sending a text to my mum. He He, I text whilst drivin' aswell, but not my mum, one of many random females.............. Ben.. Quote Link to comment Share on other sites More sharing options...
millhouse Posted June 11, 2004 Share Posted June 11, 2004 Originally posted by Soonto"HAS"soop He He, I text whilst drivin' aswell, but not my mum, one of many random females.............. Ben.. At 160 mph Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted June 11, 2004 Share Posted June 11, 2004 Mines been off the clock by about a cm. (probably where 190 would be). Incidentally, my speed read 170 at Woodbridge, and the actual measured speed was 165... Edited to add, it's not quite standard Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted June 11, 2004 Share Posted June 11, 2004 a lad we know with a uk supra has filmed his speedo at 180 on clock. he was holding camcorder at the time and he is nuts. most i have been is 160 on speedo and lost bottle as roadside goes way to fast. but at 140 it just feels like ok and solid on road. not too fussed for top speeds Quote Link to comment Share on other sites More sharing options...
Timwildman Posted June 11, 2004 Share Posted June 11, 2004 Just like to add Milhouse, and my pictures, were taken by assistants, on a very long, very stright, very empty road, in europe. Quote Link to comment Share on other sites More sharing options...
dude Posted June 12, 2004 Share Posted June 12, 2004 TSC speed recorded 163 speedo reading about 168 , pulling the TRAC fuse on a J-spec does not normally take the limiter off the box , i have a mines ECU that does !!!! Dude:flame Dev Quote Link to comment Share on other sites More sharing options...
carl0s Posted June 12, 2004 Share Posted June 12, 2004 I didn't realise these cars could go so fast! A kid (yet another) asked me how fast it could go a day or two ago and I said I thought it was geared to do about 155 or 160 Quote Link to comment Share on other sites More sharing options...
TLicense Posted June 12, 2004 Share Posted June 12, 2004 3 or 4 times I've managed to put mine off the clock by a cm or so. (180 mph on my test track) Only bother is the gearing I've got gives me a 20% error all over the rev range on the speedo. (REALLY must get that sorted) so that would give me a speed of what about 155+ the car was still pulling like a basterward, but my bottle ran out. Might try to see exactly how quick she'll go soon. Will need to post evidence though obviously. Regards Quote Link to comment Share on other sites More sharing options...
Zed Posted June 12, 2004 Share Posted June 12, 2004 These experiences would suggest that my speedo probably isn't over reading by 25 mph when it shows 175. It's more likely over-reading by about 6-7 mph. So my question is, how come the rev limiter is cutting in so late when the car is supposed to be restricted to 155? Quote Link to comment Share on other sites More sharing options...
Jake Posted June 12, 2004 Share Posted June 12, 2004 Originally posted by Zed I've had an indicated 175 when the limiter cut in, but i'm sure this was not the actual speed. I beleive the supra is quite bad for over-reading at high speed. Assuming the limiter cut in at an actual 155 then it was overreading by 25 mph which sounds like a very high margin of error indeed!! Zed, The difference between 175 and 155 is 20, not 25 20mph isn't very much more than 10% I'd be pretty sure that you're hitting the 155mph limiter. Before I had my speedo calibrated my speedo was also out by more than 10%. In previous threads alot of folks have commented on how inaccurate the Supra speedo is. Quote Link to comment Share on other sites More sharing options...
Suprash Posted June 13, 2004 Share Posted June 13, 2004 Even though I have been bettered..... Edited to say, had my speedo at 170, then guess what....bottled........ Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted June 13, 2004 Share Posted June 13, 2004 Originally posted by Timwildman On the vvti twin turbos, the second cam profile is used to fill the gap between turbos, this just makes the second turbo comming on-line less noticable, but you still get the feel of extra pulling power, just no real kick. An even smoother torque curve. Err..... what second cam profile? The VVT- i (Variable Valve Timing (with) intelligence) system continuously varies intake valve timing throughout the rev range by hydraulically rotating the camshaft relative to its drive gear, the (single) profile remains the same. The later VVTL-i (as fitted to late Celicas) has a dual profile cam HTH Quote Link to comment Share on other sites More sharing options...
JamesC Posted June 13, 2004 Share Posted June 13, 2004 I just assume it was twin cam as like the new vv type cars you accelarate then around 4500-5000 it kicks in? I've got a pre-faclift N/A and mine feels exactly the same, just before 5000rpm you can feel something kicking in. I gave my mate a go the other day and he said exactly the same thing. Quote Link to comment Share on other sites More sharing options...
Timwildman Posted June 13, 2004 Share Posted June 13, 2004 Originally posted by geoffvalenti The VVT- i (Variable Valve Timing (with) intelligence) system continuously varies intake valve timing throughout the rev range by hydraulically rotating the camshaft relative to its drive gear, the (single) profile remains the same. Well never knew that looked it up, found a usfull little write up: taken from here The following information on Toyota's Variable Valve Timing and Lift (with intelligence) system is derived in large from the October issues of Sport Compact Car and Car and Driver. As always, I encourage you to obtain a copy for yourself. The VVT-i portion of the system continuously varies intake valve timing throughout the rev range by hydraulically rotating the camshaft relative to its drive gear. Note that VVT (without the "i") did not do this continuously. The VVL portion of the system is similar to Honda's VTEC system, incorporating two distinct cam profiles. However, the actual mechanism is quite different. Both cam lobes operate a single wide rocker arm that acts on both intake or both exhaust valves. A needle-bearing roller on the arm follows the low-rpm, short-duration, low-lift lobe, forcing both valves to open and close on that profile. The roller design and roller bearings on the rocker arm pivot help to minimize valvetrain friction. The high-rpm, higher-duration, longer-lift lobe rubs on a hardened steel slipper follower mounted to the rocker arm with a spring. Even though the high-rpm lobe is pushing down further than the low-rpm lobe, the spring absorbs the extra movement. At 6000rpm, the ECU sends a signal to an oil control valve at the end of the camshaft that puts oil pressure behind a lock pin in the rocker arm, sliding the pin under the spring-loaded slipper follower, locking it to the rocker arm and forcing the arm to follow the high-rpm cam profile. Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted June 13, 2004 Share Posted June 13, 2004 There doesn't seem to be very much information available on the VVT-i Supra at the moment, I'm by no means an expert on the subject, just trying to pass on any little gems of info that I can gleen Quote Link to comment Share on other sites More sharing options...
Digsy Posted June 13, 2004 Share Posted June 13, 2004 I've seen a VVTL-i head (4 cylinder version) in bits. It's sweet. Very odd method of camshaft lubrication though. There is like a spray bar on the inside of the camcover that sprays oil down onto the camshafts. Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted June 13, 2004 Share Posted June 13, 2004 What, a bit like the old Ford cortinas? or is it mounted actually in the cam cover? Quote Link to comment Share on other sites More sharing options...
Digsy Posted June 14, 2004 Share Posted June 14, 2004 It's actually mounted in the camcover. It's a pipe that runs around the top of the cover IIRC. Quote Link to comment Share on other sites More sharing options...
Nick Posted June 15, 2004 Share Posted June 15, 2004 Had mine right off the clock many times, stnadard and modified. If there were markings it would have read around 190mph. The VVT-i is a lot smoother than the 93 Auto TT I had and the engine/exhaust sounds different when the second turbo comes in, takes on a nice tone. Quote Link to comment Share on other sites More sharing options...
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