FORUM CLASSIFIEDS DIFFLOCK.com Links & Networks
Forum Homepage
Log in
Profile
Search
Private Messages
Forum Members
Register
Classified Ads
Search Ads
Place New Ad
My ads
Place your classified
ads here for FREE
NB: Adverts placed in the general
forum areas will be deleted
Difflock Homepage
Online Shop
Contact Us
FAQ
Calendar
Garage
Facebook
Twitter
Youtube
Advertise With Us - Reach your target market by advertising on the Difflock.com forum.
Click here or call 0845 125 9407

4site4x4tyres.co.uk

here we go with the engine change!

 
 
Post new topic   Reply to topic    Difflock Forum Index -> Mercedes & Unimog
View previous topic :: View next topic  
Author Message
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Sun Feb 19, 2012 5:50 pm    Post subject: here we go with the engine change! Reply with quote

So my mog came with no engine, after looking for a diesel alternative to fit it seems even fitting a merc engine will be just as difficult as anything else! So ive had a few bmw's and know my way around the engines, i figured this would be as good as any other so settled for a 525tds lump.

at first glance seems it wont be too bad, measurements seem ok, will probably have to make a new inlet, relocate filter housing and relocate alternator to other side of the block.

what d'ya reckon?

i was going to post some pics but cant figure it out!!
Back to top
View user's profile Send private message
mike97
Guest








PostPosted: Sun Feb 19, 2012 7:56 pm    Post subject: Reply with quote

Well, its allways great to see another mog engine conversion!

What mog is it? 404?

When you post or reply to a message, there is a box in the top right to click on to upload a picture from your pc........

mike
Back to top
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Sun Feb 19, 2012 8:25 pm    Post subject: Reply with quote

yeh sorry its a 404... Have you done a diesel swap or have u got the petrol?

seems i have to ask for the button to be put on. i dont have it! just have the 'img' button.
Back to top
View user's profile Send private message
mike97
Guest








PostPosted: Sun Feb 19, 2012 9:16 pm    Post subject: Reply with quote

Strange, you should have a 'Upload picture' box below the Img?

My 404 has a 5cyl 3L G wagon diesel fitted, big write up on the project if you look back at the old threads - '404 diesel'

mike
Back to top
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Sun Feb 19, 2012 9:31 pm    Post subject: Reply with quote

yes i did have a read through that a while ago, ive robbed your idea for making the bell housing, ive used the bm bell housing, clutch, flywheel, slave etc. got to make the rest of it to fit the gearbox.
how have you got on with the mounts? do you just have the front mount or any others near the rear of engine or bell housing? im a bit concerned with the length think the crappy ally bellhousing wouldnt take much to crack it.
Back to top
View user's profile Send private message
mike97
Guest








PostPosted: Sun Feb 19, 2012 9:42 pm    Post subject: Reply with quote

I've just one front mount, very similar to the std mog design. I have however fitted tie rods which go from the front of the engine to the bottom of the bellhousing (again similar to std mogs) and then tie rods from bottom of bellhousing to gearbox.

mike
Back to top
Turnip
Just got MTs


Joined: 29 Oct 2007
Odometer: 192
Location: Gloucestershire



PostPosted: Sun Feb 19, 2012 10:50 pm    Post subject: front mounts? Reply with quote

Ive used a single front mount on my Iveco engine with no other support - so far so good! -tempting fate maybe? But when you look at the set up - all the forces are resolved in the gearbox and as long as the front mount will support the engine weight I cant see a problem? My Iveco was slung this way in the truck originally.Its had some very hard use off road in the past few years!
__________________________________
Never mistake the edge of your rut for the horizon.........
Back to top
View user's profile Send private message
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Mon Feb 20, 2012 8:28 pm    Post subject: Reply with quote

ill have to have a look at the rear gearbox mount again to see how much weight it takes, maybe im being over cautious. just some braces then to tighten it up a bit.

something else i was thinking about, as i had no engine to start with or cab on, i need to know the angle of the input shaft or the distance it is from the crossmember. Or would it not make much difference in the cab...
Back to top
View user's profile Send private message
Turnip
Just got MTs


Joined: 29 Oct 2007
Odometer: 192
Location: Gloucestershire



PostPosted: Mon Feb 20, 2012 11:00 pm    Post subject: gearbox Reply with quote

If you look at the set up - you will find that all the axle thrust - front and rear is fed via axle tubes and radius arms to the gearbox. The gear box is very well mounted on a transverse axle tube. The engine to gearbox adaptor (the casting which is curved up over the chassis cross member) supports the rear of the engine well - so really all you have to do is support the front and make sure is doesnt fight the gearbox? Mine didnt have a standard engine but I worked on a 30mm clearance from top of chassis cross member to bottom of gearbox adaptor and this in turn sets to angle of the input shaft - no trouble so far!!
__________________________________
Never mistake the edge of your rut for the horizon.........
Back to top
View user's profile Send private message
dxmedia
Mud Obsessed


Joined: 10 Dec 2008
Odometer: 2185




PostPosted: Tue Feb 21, 2012 11:42 am    Post subject: Reply with quote

I think you'll have to modify the cab either way. You might be best lifting the cab an inch or two before cutting away the dog covers though.

I know that the 2.5 bmer lump isn't that tall, but due to the portals its surprising how high the engine has to sit for everything to go in.

Are you just going to be using the normal car sump or are you modifying it so that the pickup doesn't go dry when at funny (non car) angles?
Back to top
View user's profile Send private message
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Wed Feb 22, 2012 12:50 am    Post subject: Reply with quote

Good ill work from that measurement then.

Yeah i was thinking of maybe a dry sump system, depending on how much its will cost, i can make some stuff like tanks, manifolds etc.
I gues the only other thing wud be to baffle the sump.

Has anyone got an email address for difflock admin?? Wana get the pic button enabled. Cheers.
Back to top
View user's profile Send private message
dxmedia
Mud Obsessed


Joined: 10 Dec 2008
Odometer: 2185




PostPosted: Wed Feb 22, 2012 9:41 am    Post subject: Reply with quote

If you upload pictures into this thread it will be moved and put in the gallery section.

Best thing to do it set up a flickr or photobucket account and then link to the picture using the
Code:
[img]www.pictureurl.com[/url]  image code like that.
Back to top
View user's profile Send private message
mike97
Guest








PostPosted: Wed Feb 22, 2012 4:29 pm    Post subject: Reply with quote

So, why would his photos be moved to the gallery section??

I dont have a photo account, and have never had any trouble uploading photos direct from the pc to the thread, just curious?

mike
Back to top
dxmedia
Mud Obsessed


Joined: 10 Dec 2008
Odometer: 2185




PostPosted: Wed Feb 22, 2012 4:35 pm    Post subject: Reply with quote

There was a whole load of pics moved on here from inside threads to the gallery section a few months back. Loads of links were lost that way Sad
Back to top
View user's profile Send private message
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Mon Apr 16, 2012 2:21 pm    Post subject: Reply with quote

So hit a bit of a stump on this, having trouble getting it all lined up. I need a positive way to get the input shaft centred and the engine straight and parallel with the gearbox. Then i can weld the bellhousing in position. Spoke to a few engineering companys, but they dont want to know! Anyone got an ideas on getting it all straight and centered?
cheers guys!
Back to top
View user's profile Send private message
Turnip
Just got MTs


Joined: 29 Oct 2007
Odometer: 192
Location: Gloucestershire



PostPosted: Mon Apr 16, 2012 9:49 pm    Post subject: Reply with quote

I used the steel plate which bolts to the existing 404 engine/ gearbox about 6mm thick from memory? It has a "U" shaped hole in it which is accurate to the crankshaft centreline. I turned an aluminium disc to fit snug in it - and then a spigot on the disc to align my engine. I can dig out some pics if it would help?

Phil

__________________________________
Never mistake the edge of your rut for the horizon.........
Back to top
View user's profile Send private message
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Tue Apr 17, 2012 9:04 am    Post subject: Reply with quote

i still have that plate, if you have some pics that would be great, cant quite see how that you got the dead centre of the shaft?

i just dont want to guess it, get the cab on then find the clutch doesnt clear properly!
Back to top
View user's profile Send private message
Turnip
Just got MTs


Joined: 29 Oct 2007
Odometer: 192
Location: Gloucestershire



PostPosted: Tue Apr 17, 2012 12:43 pm    Post subject: Adaptor Reply with quote

You are quite correct - this bit has to be spot on or the clearing of the clutch will be the least of your problems! When I got my Mog it had a transit engine on a chopped Mog gearbox/ engine adaptor - I hope to up load a pic of that. It was an abortion and neither square nor central and the gearbox was very noisy! The Mog input shaft is a long and slender shaft and easily bent! From an engineering perspective (my trade!) there are two big problems to overcome. 1) The new engine has to be presented dead central to the gearbox input shaft, even 0.5mm would be a problem here and 2) any adaptor has to be dead square face to face with the gearbox and engine.
After much measurement I decided that 1) could be overcome by using the existing Mog adaptor plate which fits accurately both gearbox adaptor and engine. I found that the U shaped cut out is indeed central to crank centre line. with this in the bag I could turn up a circular piece of ally with a spigot to fit the bell housing of the new engine - thus perfect alignment!
The square face to face bit 2) was achieved by using the new engine bell housing as a spacer.
It is good to move a 4 cyl engine forward so the front is in the same place as the original a) for single point mount and b) because you must not underestimate just how much clearance you need for the front axle - it gets very close! If you arecuttong/ welding the Mog gearbox adaptor - it has the reputation of being very difficult stuff to weld!! I still have the Transit adaptor if you need to cut one about!

__________________________________
Never mistake the edge of your rut for the horizon.........
Back to top
View user's profile Send private message
Turnip
Just got MTs


Joined: 29 Oct 2007
Odometer: 192
Location: Gloucestershire



PostPosted: Tue Apr 17, 2012 12:47 pm    Post subject: other pics! Reply with quote

I couldnt upload the others pics - try again!

The adaptor and assembled unit - I hope!


__________________________________
Never mistake the edge of your rut for the horizon.........
Back to top
View user's profile Send private message
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Wed Apr 18, 2012 9:57 am    Post subject: Reply with quote

thanks thats great info! i see what you mean now with the spigot to align with the original bearing housing.

the only problem with mine is that im not using the mog adaptor plate or the mog bell housing. My engine has the starter on the n/s of the engine and mog is the o/s. after offering them up together there was no space for a starter either side! So ive made my own bell housing using the bmw gearbox as most of it and made a steel part for the rearmost bit... ill try get some pics up tonight to show you.

So i realy have no original datum point to go from, I thought about the idea of having a long shaft turned that will bolt in place of the crankshaft run the length through my bell housing and then into both the front and rear bearing housing of the gearbox, if they are all a tight fit this should ensure its all centered stright through, then just weld up my bell housing to fill the gap.

What do you think?

Ill try upload a drawing of what i mean later tonight.
Back to top
View user's profile Send private message
mike97
Guest








PostPosted: Wed Apr 18, 2012 5:21 pm    Post subject: Reply with quote

Hi Folks,

I didn't use the mog plate either. I made a steel plate bolted to the bellhousing and then made a plate which bolted to the mog gearbox.
I then assembled the clutch, fitted the bellhousing to the engine and slid the input shaft in - with gearbox into position. Then took loads of carefull measurements between the two metal plates I had made, when I was happy it was square, welded in the spacers between the gearbox and bellhousing and hey presto job done.

got a photo somewhere?

mike
Back to top
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Wed Apr 18, 2012 5:35 pm    Post subject: Reply with quote

what a nighmare it is to get pictures on here! got the upload picture button now but nothing happens wen u press send. Tried different combinations of "[img]picurl.com[/img][url]" still no luck!
[/url]
Back to top
View user's profile Send private message
Anderson
Gate Opener


Joined: 28 Dec 2011
Odometer: 17




PostPosted: Wed Apr 18, 2012 5:40 pm    Post subject: Reply with quote

http://s1259.photobucket.com/profile/anderson71989

all my pics are in there...
Back to top
View user's profile Send private message
mike97
Guest








PostPosted: Wed Apr 18, 2012 5:45 pm    Post subject: Reply with quote

found these, this was before i fitted tie bars underneath the crossmember.



Im no pc pro, but i click on upload pic, browse for the photo, then send, then click on standard.

mike
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Difflock Forum Index -> Mercedes & Unimog All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can post calendar events in this forum
Specialist Tools

Oil Safe

Service Kits

Adrian Flux 2017

Facebook

Join our mailing list for upcoming events, special offers, discount coupons and expert advice on the latest 4x4 products!

* indicates required



4site4x4tyres.co.uk


    
Powered by phpBB © phpBB Group