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Topic: MT75 'box (Read 815 times) |
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mazzy_j
Full Member
Posts: 664
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Hi all, would anybody know if the MT75 gearbox fitted to the 2.3 16v the same fitment (i.e same length, bolt locations) as fitted to the diesel Scorpio?
I know the gearing in 3rd and 5th is slightly different, the reason i ask is that i have the chance to buy a 2.3 geabox which i want to put in my cossie, but i'd been advised to use a diesel one. If the 2.3 one is the same, then i'll use that instead.
Thanks, Matt
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: MT75 'box
« Reply #1 on: Jun 12th, 2006, 9:25pm » |
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Matt do you know neither a 2.3 or diesel box will bolt onto a Cossie.
The 2.3 would need the input shaft changing & the front housing.
The diesel would just need the front housing changed.
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Dave
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sector-9
Senior Member
No scorpio anymore
Posts: 1069
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Re: MT75 'box
« Reply #2 on: Jun 12th, 2006, 11:19pm » |
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Presumably the input shaft would be thinner on the 2.3 as less torque? Also the starter motor is likely to be in different positions depending on the engine, hence the need for different bell-housing on gearbox - correct?
Darren
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: MT75 'box
« Reply #3 on: Jun 13th, 2006, 12:04am » |
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The input shaft is to short on the 2.0L & 2.3L gearboxes.
The bell housing is part of the gearbox so you have to change the whole front section.
The bolt holes do not match so there is no way of bolting a 2.3 or diesel box to a 12V or 24V block.
In the U.K a few 2.9 12V MK3 Granada's had a manual box but these are very rare in the u.k.
It would bolt straight on, also the 2.9 xr4x4 box would which is where you need to get the front section from.
Best option is the diesel box, it has the correct input shaft & gearing to suit a 2.9 engine.
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Dave
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mazzy_j
Full Member
Posts: 664
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Re: MT75 'box
« Reply #4 on: Jun 13th, 2006, 8:30am » |
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Thanks, so it looks like i'll be needing to find a derv box instead. I had asked about swapping to a manual a while ago and remembered you had said about needing to swap the front sections, along with the starter motor and a few other bits. It was just i had read elsewhere that a late 2.3 gearbox could be used aswell, i just wasn't 100% sure.
Matt
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: MT75 'box
« Reply #5 on: Jun 13th, 2006, 9:24am » |
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The late 2.3 box had the same gearing as a diesel box but the early ones didn't.
You will have to get a Sierra 2.9 xr4x4 box to use the front section, you can also use the input shaft so it is possible. But you need to be sure it's a late 2.3 box.
Also Matt I am told a 24v starter will bolt onto the box so thats one less part.
Get the 2.9 fly wheel, a new spiget bearing (12V xr4x4), escort cossie clutch & fit all the clutch system.
Then I think you need a manual Scorpio prop shaft, gearbox mount & fool the ECU in to thinking your in park.
That will get you running but I am not sure what the engine ECU will do as I use after market ones.
It will either run O.K & give you a load of fault codes when you scan it saying your gearbox is missing or go into LOS 
When your ready let me know & I can give you a link on how to build your gearbox.
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Dave
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mazzy_j
Full Member
Posts: 664
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Re: MT75 'box
« Reply #6 on: Jun 13th, 2006, 9:52am » |
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Cheers, will let you know once i've tracked down all the bits 
Edit: Just had a think, does the 12v flywheel matter whether it is from an auto or a manual car?
Matt
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sector-9
Senior Member
No scorpio anymore
Posts: 1069
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Re: MT75 'box
« Reply #7 on: Jun 13th, 2006, 11:32pm » |
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Yes! Autos don't have a true flywheel as such - they use the torque converter for this and it bolts to a driveplate (incorporating ring gear) which itself bolts to the crankshaft - there isn't a friction surface for the clutch disc to press against and by itself it doesn't have the mass needed to smooth the engine output.
Darren
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