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Old 31-03-2009, 07:15 PM   #1
adrian k
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Default RPM vs gear

I just noticed today that my XR8 was revving at about 2100rpm when sitting just on 100kms, it sounded like it needed to change gear. it didn't feel like the torque converter was locking up. what revs should it be doing at 100kms? i thought i remember it sitting at about 1800-1900 at 100kms?

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Old 31-03-2009, 08:12 PM   #2
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mines about the same?
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Old 31-03-2009, 08:21 PM   #3
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3.45's would deffinately be sitting on that at 100k's.
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Old 31-03-2009, 08:23 PM   #4
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My Fairlane has 3.45s and sits on just under 2000rpm at 100kph


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Old 31-03-2009, 09:31 PM   #5
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I Think it's just the 220kws+?
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Old 31-03-2009, 09:37 PM   #6
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2100rpm sounds about right at 100kmh.
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Old 01-04-2009, 12:05 AM   #7
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xr8 torque convertors lock up 200 rpm higher than the 6, my xr6 locks at 95 kph.
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Old 01-04-2009, 01:14 AM   #8
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my fairmont v8 with 3.45 sits at 2050 at 100kmh, locks up at 70kmh at very very low throttle and is very noticeable
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Old 01-04-2009, 06:29 AM   #9
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hmmm, maybe i am imagining it that it was lower before. i will take the TS out and see what that does where i can actually put it and keep it in lock up.
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Old 01-04-2009, 06:54 AM   #10
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Quote:
Originally Posted by Bushbasher
My Fairlane has 3.45s and sits on just under 2000rpm at 100kph


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Sure that's not 3.23's?

3.08's sit around 1850.
3.23 @ 1950
3.45 @ 2050 - 2100
3.73 @
3.9 @ 2300
4.11
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Old 01-04-2009, 07:25 AM   #11
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Quote:
Originally Posted by The Monty
Sure that's not 3.23's?

3.08's sit around 1850.
3.23 @ 1950
3.45 @ 2050 - 2100
3.73 @
3.9 @ 2300
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Nope, the sticker on the diff says 3.45 so if your figures are correct then my tacho must be out.


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Old 01-04-2009, 10:55 AM   #12
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Dont worry, my Tacho is out all the time, lol. At the drags, I cross the line in 2nd in the monty, at 6600rpm, it should be about 6200ish.
In the blue car, limiter is set at 6100, but bounces off 6200. lol.
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Old 01-04-2009, 02:03 PM   #13
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Does this help......... Speedo is appx 7k's fast



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Old 01-04-2009, 05:14 PM   #14
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yeah mine was sitting just tad lower in the RPM but doing 100. maybe i am getting confused with my old XR6, which would do 1900 at 100km, bang in the middle of my exhaust drone range.
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