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MECHANICALS With a 30 year-old automobile, there will always be discussion here - maintenance, modifications and mechanicals.

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  #31  
Old 17th July 2014, 11:26 PM
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Prodigal Son
 
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Default Re: 6.9 Transmission Upgrade

Sorry Mark but under no circumstance do I have any interest in the old 4 speed trans . It is the 5 speed or nothing with Mb trans or fitting Gear vendors to current box. 4 speed has no overdrive top gear so I have no interest in knowing about them they are a dead end with no positive points.
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  #32  
Old 17th July 2014, 11:27 PM
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Default Re: 6.9 Transmission Upgrade

This gear box or I will not bother. http://en.wikipedia.org/wiki/Mercede...c_transmission
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  #33  
Old 17th July 2014, 11:33 PM
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Default Re: 6.9 Transmission Upgrade

Here's a transmission comparison chart I prepared earlier in Excel but I can't work out how to post the file so here's just a copy/paste:

1 2 3 4 5 6 7 R Torque Rating Diff Ratio

6.3 3.98 2.46 1.58 1.00 na na na 500Nm 2.85
6.9 2.31 1.46 1.00 na na na na 500Nm 2.65
560SEL 3.68 2.41 1.44 1.00 na na na 5.14 400Nm 2.47
600SEL 3.87 2.25 1.44 1.00 na na na 5.59 550Nm 2.65
Torqueflite A618/47RH 2.45 1.45 1.00 0.69 na na na 2.21 610Nm
Torqueflite 48RE 2.45 1.45 1.00 0.69 na na na 2.21 610+Nm
Turbo Hydra-Matic 3L80HD 2.48 1.48 1.00 na na na na 2.07
Turbo Hydra-Matic 4L85E 3.059 1.625 1.000 0.696 na na na 2.294
Powerglide 1.76 1.00 na na na na na
FMX 2.40 1.47 1.00 na na na na 2.00
Veyron 3.18 2.26 1.68 1.29 1.06 0.88 0.80 3.64
VE SSV (6L80E) 4.03 2.36 1.53 1.15 0.85 0.67 na 720Nm 2.92
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01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
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  #34  
Old 17th July 2014, 11:34 PM
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Default Re: 6.9 Transmission Upgrade

Not trying to be mean Mark but it must be overdrive to bother with the effort required. And as I said control is no longer a problem due to Chrysler use after market came on board.
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The Kommando believed only 1 in Oz
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  #35  
Old 17th July 2014, 11:37 PM
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Default Re: 6.9 Transmission Upgrade

I just had to post all that to include all the detail I could. There's no way I'd go back to a 6.3 box for a 6.9...

The only problem with GV is weight and fitting it into the tunnel. That's why a all-in-one box is a better option if one can be found that will work without major headaches and cost
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Mark

01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
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  #36  
Old 17th July 2014, 11:38 PM
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Default Re: 6.9 Transmission Upgrade

This is the only Mb box of any interest
5G-Tronic (W5A580/Large NAG)[3]1st 3.588 2nd 2.186 3rd 1.405 4th 1.000 5th 0.831 -3.167 -1.93
However, all V12-powered cars such as the S600 and S65 AMG still retain the 5G-Tronic, which has a torque capacity of 796 lb-ft
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The Kommando believed only 1 in Oz
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  #37  
Old 17th July 2014, 11:40 PM
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Default Re: 6.9 Transmission Upgrade

I have done quick measurements to 5 speed it will fit as external width and height similar to 3 speed just length requiring new tail shaft. Torque Fabrication have agreed to fit just need to find funds.
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Memnoch #1873 6.9 255.6 RWHP
The Kommando believed only 1 in Oz
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  #38  
Old 17th July 2014, 11:41 PM
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Default Re: 6.9 Transmission Upgrade

Going by the ratios a 6.3 would rev even higher than a 6.9 at 100kmh. What's your 6.9 doing (RPM) at 100kmh Motec?
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Mark

01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
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  #39  
Old 17th July 2014, 11:43 PM
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Default Re: 6.9 Transmission Upgrade

Just over 2400RPM. And yes that's why 6.3 has lower top speed of 137MPH.
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  #40  
Old 17th July 2014, 11:50 PM
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Default Re: 6.9 Transmission Upgrade

Personally I like the idea of this one:

Torqueflite 48RE 2.45 1.45 1.00 0.69 na na na 2.21 610+Nm

Just add a GV for an 8 speed trans!!
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Mark

01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
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  #41  
Old 17th July 2014, 11:51 PM
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Default Re: 6.9 Transmission Upgrade

The only question with that config is what final drive to use....
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Mark

01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
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  #42  
Old 17th July 2014, 11:55 PM
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Location: perth
Posts: 5,897
Default Re: 6.9 Transmission Upgrade

Are you paying attention box can take 1000Nm because it needs to handle the S65 which is limited to 1000Nm. With 5 speed and gearvendors 10 speed so it could be called Malvern Star.
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  #43  
Old 18th July 2014, 12:00 AM
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Default Re: 6.9 Transmission Upgrade

Yes but how much would that all cost by the time you get the trans, overhaul it, buy a GV, modify it to fit (at both ends), plus buy an ECU?
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Mark

01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
Reply With Quote
  #44  
Old 18th July 2014, 12:08 AM
Oversize's Avatar
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Default Re: 6.9 Transmission Upgrade

What diff ratios do Quaife offer?
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Mark

01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
Reply With Quote
  #45  
Old 18th July 2014, 12:16 AM
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Posts: 4,094
Default Re: 6.9 Transmission Upgrade

Here's the link but no word on ratios:

http://shop.quaife.co.uk/quaife-merc...450-se-450-sel
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Mark

01 Ford AU 5L (Deep Blue)
89 560L#322020
88 500L#451660-P
88 420L#422477-P
87 420L#324309-P
87 420L#-P
88 420L Euro#-P
88 420L#-P
86 560L#235896-P
79 6.9#5541 (Red Bull)
78 6.9#4248 (Skye)
79 6.9#3686 (Moby Dick)
78 6.9#1776 (Dora)
77 450L#067010-P
75 450L#028414 (Gold Nugget)-P
57 Buick 73A (Titanic)
Reply With Quote
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