Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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Gearbox will work either way. Might be a little noisier possibly whiny in the opposite direction
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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quote:
Originally posted by john-d
im not sure how it would work.. wonder if someone in the know gearbox wise can tell me if its possible to flip the diff in an f20? also if it is posible will this make the whole gearset run backwards or just the drive through the shafts?
Even If you had the crown wheel and final drive cut in the opposite direction the output would still be in the same direction, to reverse a drive you would have to add another gear which would not only probably be impossible it would add complexity and thus make the gearbox unreliable.
Lets look at this from a different view point.. The only reason Honda engines are considered to "run backwards" is because they are factory right-hand-drive cars so the engine is designed to be on the passenger side to improve weight distribution i.e. its rotated 180 degrees compared to traditionally LHD (euro) cars.
So in conclusion Just rotate the engine 180 degrees.
Sorry if this has already all been mentioned but I cant be bothered to read it all 
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DaveyLC
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Location: Berkshire
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...Also if you did drive a standard gearbox the synchros would probably shit their pants.
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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synchros work the same whichever direction you run them, well they do in ford ib5 box anyway.
the only issue you may get is the way the gears are cut which may make it noisier in gear, possibly a bit clunky to engage also
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3CorsaMeal
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Registered: 11th Apr 02
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I remember seeing the guy at works saxo engine and it was upside down.
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Ian
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Registered: 28th Aug 99
Location: Liverpool
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Pics Jim or are you attempting to fuck up another fairly normal thread?
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taylorboosh
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Registered: 3rd Apr 07
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an engine surely wouldnt run upside down due to the oil pic up in the sump?
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taylorboosh
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Registered: 3rd Apr 07
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davey - rather than rotating the engine we are pretty much set that moving the engine into the boot as is and roatating the gearbox would work best?
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FlaFFy_91
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Registered: 30th Sep 08
Location: Formby, Merseyside
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When you say rotateing the gearbox do you mean keep the engine all the same way. But just roll the gearbox over so it will in essance be upside down? With the diffpan at the top and the linkage at the bottom?
Wouldnt it be alot easier to just turn the engine and box around? So the gearbox is on the left instead of right? Would save trying to fab something to mount the box to the block iself wouldnt it?
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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quote:
Originally posted by john-d
davey - rather than rotating the engine we are pretty much set that moving the engine into the boot as is and roatating the gearbox would work best?
Turning the gearbox on the engine 180 degrees wont change the output direction? How in hell did you get to that conclusion? lol!
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DaveyLC
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Location: Berkshire
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....plus your diff will last all of 30 seconds with no oil
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taylorboosh
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Registered: 3rd Apr 07
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Rotating the engine will give 5 reverse gears..
Rotating the box will allow the shafts to sit I front of the engine which would work in the imp...
Hardest bit is The oil in the box would be upside down
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taylorboosh
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Registered: 3rd Apr 07
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Do you understand me? There's a couple pics a few pages back
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DaveyLC
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Location: Berkshire
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How can you rotate just the gearbox though John?
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FlaFFy_91
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Registered: 30th Sep 08
Location: Formby, Merseyside
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Yer i get you. I thought you wanted 5 reverse gears haha. Could you not just move the engine back? Or is there not enough room? In that case yes rotating the box upside down would work but as pointed out there will be a massive lack of oil haha. Will you be makeing some kind of oil pump? Or just some type of squirter setup?
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taylorboosh
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Registered: 3rd Apr 07
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not sure on how to fix the oil issue..
davey just make an adaptor plate
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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Rotating the box upside wouldnt change the way the shafts rotate.. Think about it 
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DaveyLC
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Location: Berkshire
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..Even if it would work there are three massive flaws
1) Oil starvation
2) The innershaft would be aiming right at the head.
3) The engine would have to be mounted very low and the suspension very high..
Yes you are being a retard
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Liam-Wilko
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Registered: 6th Mar 08
Location: Sunderland, Tyne and Wear
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:S head's busting off this haha easiest way mate but prob the most costly trial and error if it works it dose if not then it dosnt
i wanted to put a B16 honda lump in a corsa but when considering it was going to cost a lot and a lot of work to put into but so i put the idea off i have still played on the idea but its something im going to consider at a later date
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taylorboosh
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Registered: 3rd Apr 07
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quote:
Originally posted by DaveyLC
..Even if it would work there are three massive flaws
1) Oil starvation
2) The innershaft would be aiming right at the head.
3) The engine would have to be mounted very low and the suspension very high..
Yes you are being a retard
davey if we rotate the gearbox the shafts dont need to rotate backwards?, if we turn the engine 180 though then the car would have 5 reverse gears...
the imps suspension is suited to this way imo
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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So whats with the question about the engine running backwards?
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taylorboosh
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Registered: 3rd Apr 07
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if the whole engine was turned around then the car would have 5 reverse gears which i dont want..
bear with me ive been doing diagrams mate
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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If you are using the honda engine and box why would you turn the engine round? just stick it in the back facing the same way it does in the front.
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Ian
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Registered: 28th Aug 99
Location: Liverpool
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Davey - look at my diagram for what he means.
Rotate the box around the input spline so the shafts are on the exhaust side of the engine then mount it in the car with the box on the left side, inlet facing you.
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taylorboosh
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Registered: 3rd Apr 07
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this is a standard hillman imp set-up... the engines are expensive to tune for little gains and the trasaxles are weak... i want to get rid of this set up
this is a xe engine set up in a corsa or similar.... with the engine in this orientation you have 5 forward and one reverse gear.
now if we rotate the whole engine unit 180 degrees the engine will fit in the imp... the problem we face is the car will now have 5 reverse gears and one forward
if we mount the engine in the correct orientation then the shafts will turn the correct direction but will be on the wrong side of the engine. if the gearbox is flipped like in this pic then the shafts will be on the correct side, the issue now is the gearbox is upside down and will suffer oil starvation?
hope this clears things up
[Edited on 01-02-2012 by john-d]
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