Thinking outloud- could just the 5th gear ratio in an m47? - Page 2

Bugjam1999 · May 28th, 2015, 16:29

I understand the theory of that... But sounds like more pain than I want to imagine

. Back to the idea of swapping just one set of gears internally to change just 5th I think.

I expect a suitable set of gears to swap exist in another volvo gearbox of a similar age, but finding out just what you needed would probably involve take a lot of gearboxes apart in the investigations stage

better to go with a rebuild kit as mentioned above, although I haven't found a link for one online as yet.

S.

Suterman · May 28th, 2015, 17:43

https://www.youtube.com/watch?v=vOo3TLgL0kM

No.

Have you thought about taller tyres or a longer diff.

Bugjam1999 · May 29th, 2015, 07:47

Yikes, turns out gearboxes are fairly complicated then

Not sure about tyres or a diff yet, I started this thread wondering about the possibility of changing gear ratios in the gearbox as a possible solution to what I see as a slightly too short 5th gear resulting in the car revving quite high at motorway speeds. Have been pointed at a glt axle earlier in the thread, which might be the route I go down - certainly easier than changing gearbox internals or adding an overdrive!

Cheers,

S.

CWXC70 · May 29th, 2015, 08:20

Quote:

Originally Posted by Bugjam1999

Is adding an overdrive viable? I've seen a couple of threads about this before and the sum up seemed to be that it wasn't:

http://forums.turbobricks.com/archiv...p/t-55271.html

http://forums.turbobricks.com/showthread.php?t=55271

What a bad tempered place that is!

May 28th, 2015, 17:43	#12
Suterman 240 Turbo Last Online: May 3rd, 2024 23:10 Join Date: Jan 2006 Location: shropshire View Photos By: Suterman	https://www.youtube.com/watch?v=vOo3TLgL0kM No. Have you thought about taller tyres or a longer diff. __________________ 1991 240 Turbo GL 1992 940 GL 1996 940 GLE Turbo Auto 1985 Bedford CF2 B230E Last edited by Suterman; May 28th, 2015 at 17:47.

May 29th, 2015, 07:47	#13
Bugjam1999 Master Member Last Online: Yesterday 14:49 Join Date: Nov 2012 Location: London and Cambridge	Yikes, turns out gearboxes are fairly complicated then Not sure about tyres or a diff yet, I started this thread wondering about the possibility of changing gear ratios in the gearbox as a possible solution to what I see as a slightly too short 5th gear resulting in the car revving quite high at motorway speeds. Have been pointed at a glt axle earlier in the thread, which might be the route I go down - certainly easier than changing gearbox internals or adding an overdrive! Cheers, S. Last edited by Bugjam1999; May 29th, 2015 at 07:55.

May 28th, 2015, 16:29	#11
Bugjam1999 Master Member Last Online: Yesterday 14:49 Join Date: Nov 2012 Location: London and Cambridge	I understand the theory of that... But sounds like more pain than I want to imagine . Back to the idea of swapping just one set of gears internally to change just 5th I think. I expect a suitable set of gears to swap exist in another volvo gearbox of a similar age, but finding out just what you needed would probably involve take a lot of gearboxes apart in the investigations stage better to go with a rebuild kit as mentioned above, although I haven't found a link for one online as yet. S.

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