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| RWD without engine swap https://ausmini.com/forums/viewtopic.php?f=5&t=78175 |
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| Author: | Paddy [ Sat Aug 25, 2012 10:12 am ] |
| Post subject: | RWD without engine swap |
hi guys, i have been searching the net and had no luck so far, i know alot of people have done 4wd and rear wheel drive through putting bike engines in the back and so on, but has anyone done a RWD mini using the standard engine and box like say a 1275 engine and gearbox? if not does anyone know why not? cheers Paddy |
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| Author: | 1310/71 [ Sat Aug 25, 2012 10:19 am ] |
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There's a few people who have done a twinni conversion - two mini engines; one at each end! There's a guy on here in Adelaide who has done it and there are some photos of his car on here. RWD only, I don't know. I've only seen the UK bike conversions. |
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| Author: | mini1990 [ Sat Aug 25, 2012 10:22 am ] |
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With the original east/west configuration of the A series in the mini you have a set up which has two propshafts coming off the gearbox to drive each of the front wheels. In a rear wheel drive car you want one single propshaft running to the back and then drving the back wheels through a rear diff. Unless someone can correct me, I cant think of any way (of easily) transferring the power from the two front driveshafts to drive the rear wheels. This would involve some pretty nifty engineering to say the least. What could be tried is a North/South configuration A series driving the rear wheels, that would be cool. |
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| Author: | drmini in aust [ Sat Aug 25, 2012 10:31 am ] |
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mini1990 wrote: With the original east/west configuration of the A series in the mini you have a set up which has two propshafts coming off the gearbox to drive each of the front wheels.
In a rear wheel drive car you want one single propshaft running to the back and then drving the back wheels through a rear diff. Unless someone can correct me, I cant think of any way (of easily) transferring the power from the two front driveshafts to drive the rear wheels. This would involve some pretty nifty engineering to say the least. What could be tried is a North/South configuration A series driving the rear wheels, that would be cool. Nah you just put a complete FWD Mini engine, box and subby in the back... suspension and all. If you are going to do a north/south engine + gearbox + diff setup, ffs fit something bigger than an A series.. with less weight and more HP. There's hardly enough room in a Mini for a road legal setup, but it's been done in USA and elsewhere where they don't have a nanny state & it's legal. |
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| Author: | mini1990 [ Sat Aug 25, 2012 10:53 am ] |
| Post subject: | |
Ah yes doc, didnt think of putting the whole setup in the back. To be honest I thought he meant making a RWD conversion with everything from the original mini setup in situ, ie. Still retaining the engine in the front. |
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| Author: | simon k [ Sat Aug 25, 2012 12:51 pm ] |
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can be done, but you need to re-engineer the diff housing - the factory made some 4wd mokes in Aus for a trial but they didn't go into production. if you were going to do that, keep the front driveshafts and run a diff in the back as well |
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| Author: | 1071 S [ Sat Aug 25, 2012 1:02 pm ] |
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Some of the (faster) GT5 Minis raced in the US are RWD - use Sprite engines/drive trains. Mind you they have spaceframes and plastic bodies as well....but I'm sure there's a Mini part there somewhere (other than the label on the rego docs...javascript:emoticon('8)') Cheers, Ian |
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| Author: | drmini in aust [ Sat Aug 25, 2012 2:56 pm ] |
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simon k wrote: can be done, but you need to re-engineer the diff housing - the factory made some 4wd mokes in Aus for a trial but they didn't go into production.
if you were going to do that, keep the front driveshafts and run a diff in the back as well Factory 4WD Moke (the couple that BMC built) was under-engineered, both in the rear diff and the takeoff from the front one. And that was with a stock motor... |
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| Author: | Kennomini [ Sat Aug 25, 2012 11:57 pm ] |
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I would like to do all three options (mid mount mini drive train, A series north south and the east west AWD) just to have something different. IMO the best one would be the AWD followed by the mid mount and last the north south setup. If only I had the money  .
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| Author: | Paddy [ Sun Aug 26, 2012 8:58 am ] |
| Post subject: | |
Thanks for the info guys, yes what I was mainly looking at was retaining the east west engine in the front and just taking the drive from the diff somehow, I'll have a look at the 4wd mokes design and see of I can improve it a bit. |
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| Author: | GT mowog [ Tue Aug 28, 2012 1:35 pm ] |
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Warwick Augustin did one years ago. Suffered horrible oversteer until he put it on it's lid. |
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| Author: | Timbo [ Tue Aug 28, 2012 3:07 pm ] |
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There are some really interesting details here about recent modifications to the diff in the Quadra Moke. http://www.mokesinc.org/index.php/topic,8716.0.html I hope you're as good with a lathe and mill as Spider. Also general discussion on 4wd Mokes and Minis here. http://www.mokesinc.org/index.php/topic,8731.0.html Tim |
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| Author: | The Ranger 89 [ Tue Aug 28, 2012 4:53 pm ] |
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seeing the top link in the post above you could make a custom transfer case that bolts to the rear of the gearbox and run a prop shaft to custom a rear diff and subframe |
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| Author: | meeni [ Tue Aug 28, 2012 5:41 pm ] |
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If you were going to go to all that trouble why not use an engine with a bit of power? |
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| Author: | benjamin [ Tue Aug 28, 2012 7:29 pm ] |
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meeni wrote: If you were going to go to all that trouble why not use an engine with a bit of power?
because the engineering in that is more impressive 
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