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Re-gearing an M40 gearbox

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Old Feb 15th, 2020, 19:07   #21
c1800
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Quote:
Originally Posted by Bracpan View Post
Has anybody fitted a more modern 5 speed box from a Ford, BMW or Mazda MX5 ? Its the higher 5th you need.
Found this article.

http://www.1800philes.com/t5.html
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Old Feb 16th, 2020, 11:33   #22
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That's a very good article and you would probably never break that box.
But the box from a Sierra or a MX5 would be more than capable of handling the power of the Volvo plus a lot easier to get hold of...
But as its been said if your want it for cruising and not racing off the line try gearing it as high as possible first ?
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Old Feb 16th, 2020, 15:46   #23
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Sorry I'm no expert on Ford parts but i think it was the Type 9 box ?
The MX5 box is used in MGB conversions ..
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Old Feb 16th, 2020, 20:24   #24
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Quote:
Originally Posted by Bracpan View Post
Sorry I'm no expert on Ford parts but i think it was the Type 9 box ?
The MX5 box is used in MGB conversions ..
From the internet......

https://en.m.wikipedia.org/wiki/Ford...9_transmission

“try gearing it as high as possible first”

No, not as high as possible, the gearing needs to be appropriate for the vehicle and engine.

That’s why a T5 5th gear at .63 is not good for a Volvo. Was explained in the article I posted.
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Old Feb 17th, 2020, 00:27   #25
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We meant gear as high as possible with a ratio available for the axle and use the standard 4 speed box.....then if its not suitable take another route..

To be honest like others said fit an overdrive if you don't want to cut anything.

I was talking about the T9 not the T5...the type 9 can take 200 lb ft of torque so is plenty strong enough.

https://volvoforums.org.uk/showthread.php?p=2483778

try chatting to one of the lads involved with this link ?

Last edited by Bracpan; Feb 17th, 2020 at 00:40.
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Old Feb 22nd, 2020, 11:12   #26
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http://www.v-performance.com/product..._end_gear_sets

Have a look at the gear sets these people are selling for the rear axle.....hope this helps
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Old Feb 22nd, 2020, 13:25   #27
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DO NOT, REPEAT, DO NOT deal with V-Performance. A Google search will give you loads of reasons why not. Search on this forum too.
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Old Feb 22nd, 2020, 16:40   #28
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Did not realise they had a bad name..
Probably best to stay well clear by the look of it...
Shame i have dealt with some good people in the past in the USA.

Last edited by Bracpan; Feb 22nd, 2020 at 16:50.
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