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Old 05-30-2003, 03:52   #1 (permalink)
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EF speed-limiter

ok well it's manual, has an XR6 computer but it's till limited to 180, not that this is a big deal but can anyone get rid of the freaking annoying pest?!

Dave.
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Old 05-30-2003, 04:28   #2 (permalink)
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Re: EF speed-limiter

Quote:
Originally posted by fordboy1996
ok well it's manual, has an XR6 computer but it's till limited to 180, not that this is a big deal but can anyone get rid of the freaking annoying pest?!

Dave.
Can be done, but no one in their right mind will go near this one till you fix the reason for the limiter (tailshaft)
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Old 05-30-2003, 06:22   #3 (permalink)
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Do ELs have the same problem? are they limited to 180 too?
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Old 05-30-2003, 06:25   #4 (permalink)
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it's not the tailshaft, i had an factory standard (non-xr6) tailshaft checked on a balance machine it was perfectly balanced up to about 4500rpm in 5th.....also autos and manuals have the same tailshaft (herrod told me this)....the problem is in the auto the main output shaft bearing on the autos isn't rated high enough and isn't strong enough....the the bottom line.

that's why manual XR6 aren't limited.....the other reason for limiting the normal falcons is so ford can use a lower speed rated tyre, thus lower cost....

so does anyone have a cheap way to turn it off.....like the shift-kit you built....

Dave.
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Old 05-30-2003, 06:27   #5 (permalink)
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yep anything from EF one is speed limited to 180, even the new BAs are speed limited to 200....everything except for XRs and FPVs....

Dave.
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Old 05-30-2003, 16:00   #6 (permalink)
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Quote:
Originally posted by fordboy1996
it's not the tailshaft, i had an factory standard (non-xr6) tailshaft checked on a balance machine it was perfectly balanced up to about 4500rpm in 5th.....also autos and manuals have the same tailshaft
What a tailshaft does on a balance machine and what it does in the car AT ROAD LOAD are two entirely different things. A production shaft will not be running true at high speed. This generates a whip, which can fail the shaft and cause excessive load on the rear of the box. By definition, the shaft must be whipping to generate side load on the box, as gyroscope effect will make it more and more stable at high speeds if it is running true in the first place. Why do you think the BA has gone to a two piece shaft? At the same tailshaft speed, a two piece puts much less load on the box, and the shorter length of each componant means they are stable to much higher revs. Therefore one of the reasons may be a problem in the box, but the shaft causes it. When you have experience with cars running 175% over the ford limiter you will see what I mean.
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Old 05-30-2003, 19:26   #7 (permalink)
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ok well, I ask again. why aren't EF - on XR6s manual limited...they have the same tailshaft....and why aren't EL GTs limited...then again they have a carbon insert on their tailshafts....

Please explain?

Dave.
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Old 05-31-2003, 03:13   #8 (permalink)
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Well I really can't answer all you questions as I don't know however the EL GT had the tail shaft specially modified with the carbon fibre so it would be better balanced as you said. As for the auto's not handling the speed above 180, it is the tail shaft that is the limiter. I know my XR6 (an auto) does not have any speed limiter at 180kph (or 190, or 200 either)- I can say that for certain. So I would assume that the tail shaft is either modified or has a 2 piece - I seem to remember reading something about it years ago that the entire XR range was unlimited.
Either way it is not the auto's problem.
Hope this helps answer some of your questions.

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Old 05-31-2003, 03:35   #9 (permalink)
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Quote:
Originally posted by fordboy1996
yep anything from EF one is speed limited to 180, even the new BAs are speed limited to 200....everything except for XRs and FPVs....

Dave.
nah not factory LPG cars
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Old 05-31-2003, 05:19   #10 (permalink)
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Quote:
Originally posted by fordboy1996
ok well, I ask again. why aren't EF - on XR6s manual limited...they have the same tailshaft
Because possibly the auto is more susceptible to damage caused by loading from a whipping tailshaft than a manual is. The problem is still caused by the tailshaft, it may just manifest itself sooner in the auto. Possibly your computer is not a genuine XR6 item, someone may be able to ID it from its' code.
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