(Szerző: avtovaz (Jonathan Walsh), utoljára módosítva: 2007.01.15.)
There are many routes you can go with the rear axle on the Lada.
The obvious one here is using MkI/II Escort (English) axle parts. The design of the axles are very close. They both come in a front loading carrier, and both have the same bolt paterns, BUT the Escort one does differ in three ways:
Firstly, the diff will bolt straight to the lada axle but you have to use a 3mm spacer plate to get the half shafts to line up properly. This sits between the diff and axle casing.
Secondly, the crownwheel is slightly larger and fouls the casing slightly. Now to solve this is simple, a angle grinder will do! Remove some of the metal from the casing from the problem area.
Thirdly, the halfshafts are different by a little. They fit in OK, they have a 'little' bit of play in them, I
put a shaft into a diff I have and tryed it tonight to see exactly how much this is and it was after 10mins of fidderling I see there is nothing to worry about. There are 5-6 ladas here which run this setup and have never had a problem so I say dont worry about this.
The prop shaft is Lada compatible if you get the right one, I dont know what model exactly they are off but you have a 1/3 chance.
On my project car the box is a Ford type9, out of a Sierra, so I can use the Ford Escort RS2000 propshaft, again check for flange compatibility. The RS prop is single piece so there are gains again, no rubber donut to absorbe power. Thing to watch for is the Escort prop is 131cm and the Lada realy needs 132, a little difference but I know that the Talbot Sunbeam has a very similar prop and is a little longer, as the project car is still not finished, I am not sure yet, but can check as the car is in the unit with 3 Sumbeams and an Avenger estate, they have the same running gear but are older.
Of course, its not for strengh here that we do this, its because Lada LSD* is not heard of, but Escort ones come in many different types and ratios. EG, 4:1, 4:4, 4:7, 5:1, 5:3 They cost around £250-300.
*LSD = Limited slip differential, in East-eu well known as Differenzialsperr (from German)
The axle you all probably have seen is a ford and lada mix, this is because the bloke I got it off didnt know of the spacer plate thing. It cost him about ten times more than the spacer plate! You may also notice the
strengthening plates on the axle which themselves are important in a heavy landing.
Now, rear disks are a common conversion on the escort. You can buy brackets that allow XR2i calipers to be fitted. On the Escort the rear brakes are very poor, and on the Lada, in my and every other Lada rallyists here, the very large drums are more than up to the job. Also there are complications where on a hard turn the halfshaft can bow, and knock the pads out a little so when the brake peddle is pressed the next time, there is a little more travel. Apart from that and the handbrake cable problems, dont bother!
Also, Fin McCaul a friend had a lada with an Atlas axel on it, this caused many problems, but only because he didnt spend money on wheels to fit. I am not very knollageable on the Atlas but I know it can take
serious power, 300+bhp, when modifyed right. He didnt do the mod but I saw how it was done and the process can be done for any axle. The mounts on the Lada axle can be cut off. Simple! Romove exery mount,
its not hard with a good gringer, and simple weld them onto the new axle, they are all roughly the same tube diameter. Just remember to measuee the distances from the center of the diff, not the outside of
the axle and weld with good penetration BUT don't put too much heat into the axle at once or it will destort. The Atals has Ford stud pattern and therefor the lada wheel will not fit. SO, I think he used (and now I have in the garage) Ford Cortina front hubs on Escort not vented discs.
The atlas also comes in different widths, there is a narrow, 'baby' atlas: narrow i think is the one Fin had, The normal one is straight off a 3.0 capri some came with an LSD. Here you can remove the tubes, cut them down and buy new halfshafts to fit. I again dont know much of this but can find out if anyone wants. One of my friends know all about escorts, he has a 2.0 180 bhp pinto 8 valve not but has had built a now 16v 2.0 Cosworth naturaly aspirated (non turbo!) 275 bhp engine. He knows his stuff...
The Toyota axle mentioned may be a Corrolla one, they are common here for road rallying, because of the rules. Like I say above cut the mounts of one and add to the other. The Corrolla comes with LSD, and
discs. They only have 4 link bars. The prop can be cut and joined to the Corrolla one so that is not a problem.
A tip if you dont have done BTW, the handbrake cables can be vounerable because of the mounts that hang down under the car, so post the cables inside the car and mount the brackets on the backseat bar.
You have to mount the handbrake up higher so the cable can goto the underneath of it inside the car. Also the handbrake can be a little poor, so you can insert washers (1/8" thick) to where the pad sits on the lever arm, thus giving greater leverage, (take yours to bits if your not sure and youll see what I mean!). This additional length must not be gained by a weld! After removing worn out drum and pads, and fitting new ones (thicker pad, smaller diameter drum), the drum won't go to its place.