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michaltalbot
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« Reply #31 on: June 26, 2009, 08:21:23 am » |
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roy4matra
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« Reply #32 on: June 26, 2009, 10:25:18 am » |
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Is this, what we see on the picture, the gear wheels which have to be changed?
Yes Michael, those are the gears. Standard set are 33 and 45 teeth, and the ones you want are 31 and 46 teeth. As the gear is slightly larger in diameter, the fork and cover needs to be modified to clear it. Even if you have a Citroën box then you can't swap the fork over, even though it will already be modified, because it is different where it mounts to the selector shaft and does not fit in the Murena version. I have the full fitting instructions for anyone doing the job. Just download www.matraclub.org.uk/files/Fifth.txtRoy
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« Last Edit: April 24, 2022, 10:59:51 am by roy4matra »
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Lennart Sorth
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« Reply #37 on: June 28, 2009, 01:11:51 am » |
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Thank You ![Wink](http://www.matrasport.dk/forum/Smileys/default/wink.gif) Yes that's great, we could travel with our child between us - which car can offer this (except of ugly Multipla? ![Cheesy](http://www.matrasport.dk/forum/Smileys/default/cheesy.gif) ) Congratulations to both of you ! Personally I never found the original (1998) Multipla ugly - it deserves a place in the world for being different - the high mounted ligts should also be a good idea in fog, - apart from the apparently rather poor NCAP rating, I think it was a great and original car, that should deserve being added to your growing signature :-) However, the newest version of the Multipla has IMO lost all the charm, only retaining the seating arrangement - but trying to make the rest conform to an "ordinary" car - big shame. To real original Multipla was even cooler - a "stretched limo" version of the Fiat 500 : http://www.sorth.dk/p/20080920/Med/20080920_164030.html/Lennart
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michaltalbot
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« Reply #40 on: June 28, 2009, 10:24:15 am » |
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Jon Weywadt
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« Reply #41 on: June 28, 2009, 11:10:31 am » |
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Is this, what we see on the picture, the gear wheels which have to be changed?
Yes Michael, those are the gears. Standard set are 33 and 45 teeth, and the ones you want are 31 and 46 teeth. As the gear is slightly larger in diameter, the fork and cover needs to be modified to clear it, but if you have a Citroën box then you should be able to swap the fork over, which will already be modified. I have the full fitting instructions for anyone doing the job. Just download www.matraclub.org.uk/files/fifth.txtRoy If the 5th. gear speed at 1000 rpm normally is 33,79 kpm, as the repair manual states, then the new gears will result in a speed of 36,77 kph, or about 110 kph at 3000 rpm. That is closer to what I see when my tach shows 3000, so maybe I already have the 31/46 gears. But, not knowing the inaccuracy of the tach and the spedometer, the only way to tell for sure is when I count the teeth next week, when I take the gearbox apart. ![Smiley](http://www.matrasport.dk/forum/Smileys/default/smiley.gif)
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roy4matra
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« Reply #42 on: June 28, 2009, 02:38:16 pm » |
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If the 5th. gear speed at 1000 rpm normally is 33,79 kpm, as the repair manual states, then the new gears will result in a speed of 36,77 kph, or about 110 kph at 3000 rpm. That is closer to what I see when my tach shows 3000, so maybe I already have the 31/46 gears.
I can almost guarantee that you don't have the high fifth gear. All Murena have an inaccurate tachometers that means they show 3000 rpm at around 110 kph. The fact that you get those figures almost proves it is standard. When the high fifth is fitted it will read approx. 2700 rpm at 110 kph. With the high fifth and the inaccurate tachometer, you will see something like 120 kph at 3000 rpm and 160 kph at 4000 rpm. Roy
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« Last Edit: January 12, 2020, 08:50:17 pm by roy4matra »
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Jon Weywadt
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« Reply #43 on: June 28, 2009, 08:38:32 pm » |
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If the 5th. gear speed at 1000 rpm normally is 33,79 kpm, as the repair manual states, then the new gears will result in a speed of 36,77 kph, or about 110 kph at 3000 rpm. That is closer to what I see when my tach shows 3000, so maybe I already have the 31/46 gears.
With the high fifth and the inaccurate tachometer, you will see something like 120 kph at 3000 rpm and 160 kph at 4000 rpm. Roy Hi Roy. A couple of posts ago, in this thread, I did write that my spedometer reads 120 kph when the tach is showing 3000 rpm. What I should have written above was "That is closer to the 120 kph I see when my tach shows 3000 rpm" So I am still dreaming ![Cool](http://www.matrasport.dk/forum/Smileys/default/cool.gif) but I will have the tach calibrated and clock the speed from the markers on the interstate. Jon.
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