Top speed with FI
02-05-2006, 02:29 PM
#54
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Originally Posted by dtorre
Well the 6th gear is definately governed in America....I hit 161 on the speedo running way into the redline in 5th where it's getting ready to touch 10K....then shifted into 6th and the car felt like I had downshifted and not rev matched...went down to 153 then I realized I didn't do anything wrong...kept on the gas got it to 155 mph....and it just stood there....was even going downill in 6th at 155 and it just kept staying there....tryed the run again same results....
took almost half a tank of gas to do all this =)
took almost half a tank of gas to do all this =)
b) the rev limiter is 9,000 rpms which looks like 9600 rpms on the tach which really is 154mph in 5th gear
07-20-2006, 04:30 PM
#57
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question, cant seem to find, but whats the math about the 6th gear rpms??
i remember something that if.. your cruising in 6th at 4k rpms.. its really only like 2k? you divied the number the needle reads by.. 2 or 3 or something and thats what rpm you are really drifting at?
i remember something that if.. your cruising in 6th at 4k rpms.. its really only like 2k? you divied the number the needle reads by.. 2 or 3 or something and thats what rpm you are really drifting at?
07-20-2006, 04:35 PM
#58
Yes. The RPM's displayed on the tach is a lie. 
The actual correction factor is about 1.0
But it depends what gear you are in. In first, you need to use 1.0, in neutral and 2nd, you need to use 1.0. Buth in 3rd and 5th, use 1.0. 4th and 6th, on the other hand, use 1.0 and 1.0 respectively.
<heavy dose of sarcasm>
Cheers,
Hymee.
The actual correction factor is about 1.0
But it depends what gear you are in. In first, you need to use 1.0, in neutral and 2nd, you need to use 1.0. Buth in 3rd and 5th, use 1.0. 4th and 6th, on the other hand, use 1.0 and 1.0 respectively.<heavy dose of sarcasm>
Cheers,
Hymee.
07-20-2006, 04:39 PM
#59
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The output shaft turns 3 times per one rotation of the rotor. So at 9,000 rpm, the rotors are only turning 3,000 rpm.
The car is governed by gearing at 184 mph and 6th. (fuel cut off)
The car is governed by gearing at 184 mph and 6th. (fuel cut off)
07-20-2006, 04:44 PM
#60
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Originally Posted by Hymee
Yes. The RPM's displayed on the tach is a lie.
The actual correction factor is about 1.0 But it depends what gear you are in. In first, you need to use 1.0, in neutral and 2nd, you need to use 1.0. Buth in 3rd and 5th, use 1.0. 4th and 6th, on the other hand, use 1.0 and 1.0 respectively.
<heavy dose of sarcasm>
Cheers,
Hymee.
The actual correction factor is about 1.0
But it depends what gear you are in. In first, you need to use 1.0, in neutral and 2nd, you need to use 1.0. Buth in 3rd and 5th, use 1.0. 4th and 6th, on the other hand, use 1.0 and 1.0 respectively.<heavy dose of sarcasm>
Cheers,
Hymee.
lol
07-24-2006, 12:50 PM
#61
lies lies lies.
so all these statments about the false reading of the rps in certain gears.... anyone here know how to correct this and fix it so that we can reach higher MPH in the respective gears. Cuz gentlemen, i am not feeling this whole 4k instead of 2k rpm deal. 
07-24-2006, 01:29 PM
#62
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Originally Posted by Skiptomylue
see, i ask a simple question, and this is what happends, i read somewhere that in 6th the rpms are a lie, thanks for the sarcastic reply lol
lol
07-24-2006, 01:39 PM
#63
Give the guy a break. The tach reads what the flywheel is turning, doesn't know what gear you're in. It reads off the front timming disc it has no knowlage of anything else. Nor should it. Everything up to and including the input shaft does not vary.
If I don't say that I mean the E shaft and not the rotors I will get more **** then you did. OK the Eshaft conected to the flywheel then the input shaft via the clutch and we assume the clutch is not slipping. Did I cover everthing, nit pickers?
All you want to know from that instriment is engine speed, in this case defined by the Eshaft. Everyone wants to confuse you by telling you that you are not reading rotor speed. Tell them you don't give a **** and if you did you passed second grade math.
If I don't say that I mean the E shaft and not the rotors I will get more **** then you did. OK the Eshaft conected to the flywheel then the input shaft via the clutch and we assume the clutch is not slipping. Did I cover everthing, nit pickers?
All you want to know from that instriment is engine speed, in this case defined by the Eshaft. Everyone wants to confuse you by telling you that you are not reading rotor speed. Tell them you don't give a **** and if you did you passed second grade math.
07-24-2006, 03:00 PM
#64
Yep - there is no point worrying about what the rotor RPM is. You could even look at it this way - the rotors has 2 different RPMs!!! It has it's orbital RPM, where the center of the rotor is always following the crank. So at that point, the rotor's RPM is the same as that of the crank. Then the rotor has it's own rotation about itself. Yep - that is one third crank/orbit speed. Its a bit like the earth spinning on it's own axis while orbiting the sun. Except in this case we would have 3 years per day, or 1/3 day per year 
There might be a slight display error on the gauge, but I'm not really arguing about a couple of hundred RPM. All the logging I do is with a scan tool anyway, and it is getting the actual RPM as measured by the PCM.
Cheers,
Hymee.
There might be a slight display error on the gauge, but I'm not really arguing about a couple of hundred RPM. All the logging I do is with a scan tool anyway, and it is getting the actual RPM as measured by the PCM.
Cheers,
Hymee.
07-25-2006, 02:27 AM
#66
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thanks, i didnt really care, i usually shift between 4.5k rpms and 5.5k rpms, so if im driving in 6th at 4k rpms, i dont really care, nor can i do much about it, i just read somewhere on this site about something like that, and i didnt understand or remember what it was,
07-25-2006, 04:55 AM
#67
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I know of a few NA's that did 240+kph.... I myself have done 260 but did not have the guts to go further.. hood was sorta lifting... Not sure how to explain it
07-25-2006, 01:49 PM
#74
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jesus 5 pages and no one chimed in?
indicated 165mph, at 9psi in 6th gear
got there very quickly, and had a little juice left in it, but I was running out of...uh..track. check the sig for mods
indicated 165mph, at 9psi in 6th gear
got there very quickly, and had a little juice left in it, but I was running out of...uh..track. check the sig for mods
07-25-2006, 04:55 PM
#75
Originally Posted by Skiptomylue
and that is what i was asking about.. the fact that the reading is "false"
I don't really think the reading is that false to be much of a deal. How accurate can ones eyes interperate a swinging needle gauge? Probably about as accurate as this discrepency. Much better to log with a scan tool, and then analyse.
Cheers,
Hymee.