ChrisW
|
 posted on 12/8/02 at 04:36 PM |
|
|
4x4 Gearbox drawing
Someone's Locost site has a drawing of the Sierra 4x4 gearbox on it. I thought it was the egroup but I can't find it now. Anyone know where I
could download it?
Cheers, Chris
|
|
|
|
|
Liam
|
| posted on 12/8/02 at 04:41 PM |
|
|
I think I got that drawing. It's an autocad drawing of a whole chassis with the 2.8 V6 and the 4x4 gearbox in it, right?
I could email it you once I've set up my own PC.
Liam
|
|
|
ChrisW
|
| posted on 12/8/02 at 04:52 PM |
|
|
No, it was just a scan of a page from the Sierra 4x4 workshop manual showing the gearbox, props, diffs and halfshafts.
Chris
My gaff my rules
|
|
|
ChrisW
|
 posted on 12/8/02 at 05:21 PM |
|
|
It's ok, I found it! 
http://www.asknik.co.uk/supp.html in case anyone is interested.
Chris
My gaff my rules
|
|
|
ChrisW
|
| posted on 12/8/02 at 10:57 PM |
|
|
One more thing...! Has anyone got (either in a Haynes manual or otherwise) a picture of the underside of a Sierra 4x4? I want to see how the front
diff is positioned with respect to the engine. From the exploded diagram linked above it looks like the front drive shafts go right through the
engine. That can't be right can it??
In case you havn't guessed this is for my 'XR2000' as pictured under my name. Fed up with the lack of traction it seems to suffer from (keep
getting beaten off the lights by Locosts!)
Chris
My gaff my rules
|
|
|
Metal Hippy™
|
| posted on 12/8/02 at 11:17 PM |
|
|
I seem to remember a post about the 4x4 months ago saying something about the drive shaft going through the sump...
No idea if time is clouding things, but maybe Liam or some such person can clarify for you?
President of the Non-conformist Locost Builders Club. E-mail for details...
|
|
|
Liam
|
| posted on 13/8/02 at 12:32 AM |
|
|
Yeah the front diff bolts to the sump and an intermediate shaft goes through it.
So you'd need a 4x4 sump (shame you didn't think of this before Newark cos there was one there for sale), but would that go on a CVH? Dunno. Do you
want my 2.8 V6 too
Now a 4WD festa - that sounds awesome...
|
|
|
Liam
|
| posted on 13/8/02 at 12:34 AM |
|
|
As for a scan - I got a sierra V6 haynes which covers the 4x4, so i'll see what I can do.
|
|
|
ChrisW
|
| posted on 13/8/02 at 01:22 PM |
|
|
Cheers Liam - a scan would be great if you get a moment to do it. Sounds like I may have to modify the CVH sump, although my plan of action is to fit
the diff in place first then squeeze the engine in around it
Just trying to decide about the back at the moment. Looks like fitting an escort mk2 axle would be the easiest way but I'd really like to use Sierra
IRS.
The 4WD has come out of a conversation last weekend - I'd always said it'd be nice to make it RWD (and it's been done before) but I figure putting
the tunnel in will be the most difficult bit so why not go the whole way and make it a 4x4 and get rear discs into the bargain. Should solve my grip
problem at any rate!
Cheers, Chris.
My gaff my rules
|
|
|
johnston
|
| posted on 13/8/02 at 10:03 PM |
|
|
feck the 4wd and steer from the rear mk2 wit five link is the easyiest way to go seen a mk1 rally car done this way and it wasne 2bad
|
|
|
Liam
|
| posted on 13/8/02 at 10:51 PM |
|
|
quote:
but I figure putting the tunnel in will be the most difficult bit .
Well that's probably right, but there's rather a lot of work to be done in the engine bay too - especially with 4x4. But then if RWD's already
been done, the knowledge and help is out there i guess. 4x4 is a relatively small step from that. Hows this for an alternative idea though -
shortened sierra 4x4 floorpan onto which you graft a Festa body... that's how they developed the Escort Cosworth by the way (not a Festa body
obviously).
About the front diff... it pretty much has to be mounted to the engine cos it needs to be fixed relative to the gearbox. That's cos the little front
propshaft between side of gearbox and front diff is single piece and has no sliding joints - so if your front diff could move relative to the engine,
you could disengage the front propshaft past the oil seal. The front diff in my 4x4 locost is mounted in the chassis way ahead of the engine, but
thats cos I have the freedom to put a sliding joint in the front propshaft.
It'd be quite a job to mod the CVH sump to take the front diff - it don't just need a hole in it. Only real option would be to mod a 4x4 sump to
fit the CVH I think - it houses the speedo drive gear too. You'd also need to get hold of the intermediate shaft that runs through the sump.
Next thing to think about is the front uprights. If you wanted to use the sierra driveshafts, you'd have to fit the sierra uprights (and have a rude
looking wide track festa). Probably the best option is the solution Tiger came up with for their 4x4 twin-bike-engined beasty. For the front diff,
they used a sierra rear LSD turned-upside-down. The front uprights are VW golf. They then got the inside halfs of the sierra driveshafts, and the
outside halfs of the golf driveshafts, and stuck them together - job done.
Well that's something to think about - will scan any relavent pages of the haynes manual, but those workshop manual pictures you already got tell you
pretty much all there is too it.
Liam
|
|
|
Liam
|
| posted on 13/8/02 at 11:08 PM |
|
|
Actually, this has jogged my memory a bit. I've definately read about a few 4x4 Cosworth Fiestas being built for rallying by like-minded nutters -
so you're not alone, it can and has been done...
|
|
|
johnston
|
| posted on 14/8/02 at 07:25 PM |
|
|
look at the ka's inn ccc a few months bac
seen 1 on show at the circuit of ireland the articale didnt do them justice they are really well built and thought out
|
|
|
ChrisW
|
| posted on 14/8/02 at 08:18 PM |
|
|
Cheers for all that Liam. I was planning on using Sierra front hubs on the Fiesta struts (if possible) The reason I want to use the CVH is because
I've already spent so much on it. It's been dyno'd at 153bhp @ 5535rpm at the front wheels which is apparently pretty stonking for a non-turbo.
Would have to get a sump from each and have a look - I expect Merlin can make me something on his laser! 
I have heard rumours that there was a RWD kit available for the mk1 by the same people who made the kits for the mk3 escort (Gatrac) but I can't find
any mention of it on the web.
The plan is to bolt the floorpan of the car to a nice thick bit of ply, cut the exhaust tunnel out and weld a bigger one in. May well cut the tunnel
out of my Locost donor's Sierra...
Anyway, it's all an idea at the moment. Wanted the gearbox to offer up and see if it's even remotely going to fit. The first thing to do is to
look for a dodgy Fiesta to try it all out on first I reckon rather than cut up my baby!
Johnston - if you have any more info about the cars you've seen it'd be appreciated! Not sure what you mean by '5 link' 
If anyone can help please leave your comments!
Chris
My gaff my rules
|
|
|
johnston
|
| posted on 15/8/02 at 08:53 PM |
|
|
the locost is five linked at the bac axle its wot the grp4 escorts have at the bac to convert to coil overs insstead of the stanederd leaf springs i
think that was how the gartrac escorts were done so the fiesta is probably the same
u can buy a all the stuff to convert an escort at http://www.tas.uk.com/index.asp
but a lotta people make their own its the easiest way to convert a fwd to rwd
rally guys over here have done it from novas corsa's fiestas mk3,3,4,5,6 escorts all usin mk2 escort runnin gear
|
|
|
James
|
 posted on 16/8/02 at 02:35 PM |
|
|
Whilst we're on the subject....
Were all the XR4x4's fitted with LSD?
If you want to take off the rear diff/shafts from a 4x4 is removal the same as the 2wd Sierra ie. easy or is there anything special to note?
When it comes to the front, to remove the driveshafts presumably the sump has to be drained first? Can you then just pull the front shaft though or
does the sump need removing?
Just wondering so as to expand my mechanical knowledge...
Thanks- any info greatfully received,
James
...I can assure you- there has not been a 4x4 abandoned near me at all- ok?
|
|
|
theconrodkid
|
| posted on 16/8/02 at 04:21 PM |
|
|
The front shafts go into the front diff,i scrapped one a few weeks ago,nowt wrong with,just needed an exhaust.
|
|
|
Mi167
|
| posted on 16/10/02 at 04:27 PM |
|
|
i think all the xr4x4 were fitted with an LSD
|
|
|
Cheffy
|
| posted on 17/10/02 at 09:27 PM |
|
|
James,
Don't know how the removal of the rear diff/shafts of the 4wd compares to the 2wd 'cos I'm not familiar with the 2wd.
With regard to the front end though, yes you do need to drain the sump first, but the drive shafts just pull out without removing the sump. There is
another tube that goes through the sump though (that surrounds the drive shaft) which I haven't got round to removing yet so I'm not sure how that
comes out.
Sorry I can't be anymore help,
Cheers,
Mart.
PS. Tried to e-mail you earlier but it keeps getting returned. Have left a message in your u2u. Have ordered FSO tubes for front suspension. If
you're still interested e-mail me.
Farts are like Rock'n'Roll. You love your own but you hate everybody else's. Lemmy, Motorhead.
|
|
|
James
|
| posted on 18/10/02 at 01:23 PM |
|
|
Hi Cheffy,
Rear of 4wd is the same as 2wd- so should be easy to get off, assuming some b*stard hasn't gone and put a stinking tow bracket across it so that you
can't undo the rusty bolts!
Don't worry- I'm not bitter!
At the point of giving up with the rear I didn't bother with the front so academic now anyway- but thanks!
Regarding e-mailing me- you should just be able to use the address that's here but remove the two **and the text that#s between them- it's been done
to try and prevent me getting anymore junkmail.
Anyway, I'll mail you soon.
Cheers,
James
|
|
|
Liam
|
| posted on 18/10/02 at 09:10 PM |
|
|
Towbar on ya XR4x4 caused you some grief too, huh? To cut a long story short, when I was trying to remove mine I ended up having to call the fire
brigade!
Just a shame I didn't get any photos for my website build gallery.
Liam
|
|
|
