Thread: Anyone put a TD5 into a S2a?

I have seen a few with 200tdi and 300tdi engines, both using the original gearbox, but not a td5. Woud you need to change the front axle if changing the gearbox?

Aaron

I can see two basic issues (there are probably more)

1. The TD5 gearbox is full time four wheel drive. You can either convert the gearbox to part time, or the front axle to CV joints. There is, I believe someone who does the first of these (Ashcroft?) and the simplest solution for the second is to fit a front axle out of a Series 3 Stage 1 (if retaining the 4.7 diffs you need to fit one of these to the Stage 1 axle). These are slightly more plentiful than hen's teeth, but you could get lucky.

Also, you should assume you will have to replace the Rover rear axle assembly with a bolt in replacement Series 3 or very late Series 2a Salisbury axle.

Fitting axles from a coil springer sounds like a good idea, but apart from the wider track requiring body modifications, there are serious problems with the steering, as the track rod needs to occupy the same space as the front leaf springs. There are solutions, but none of them very satisfactory, and most needing a very cooperative engineer.

2. Braking. The increase in power will require better brakes (and expect RMS to insist on this - check what they will require very early in the design phase). The simplest is to install the wider front brakes off a Series 3 109 six or V8, together with a boosted master cylinder. Possibly with dual circuits. Bolt in off a Series 3 six or late four. However, this requires, on the 2a, modification of the RH mudguard to provide room for the booster and dual master. Note that disc kits are available for Series Landrovers.

You need to consult with the RMS or the engineer who will be approving the modification before you actually start doing anything - this will potentially save a lot of grief.

Hope this helps

John

That sounds awesome. How would you work that in with ADR's and engineering certificates?

To add to Johns comments, you also may not fit the TD5 behind the recessed fascia. Also with a longer driveline, you may not fit with some Xmembers under the front propshaft and also behind the gearbox.

But I like the idea! I actually think that would be a great conversion for a Stage 1 where the chassis fits all of that kit well.

Originally Posted by JDNSW

I can see two basic issues (there are probably more)

1. The TD5 gearbox is full time four wheel drive. You can either convert the gearbox to part time, or the front axle to CV joints. There is, I believe someone who does the first of these (Ashcroft?) and the simplest solution for the second is to fit a front axle out of a Series 3 Stage 1 (if retaining the 4.7 diffs you need to fit one of these to the Stage 1 axle). These are slightly more plentiful than hen's teeth, but you could get lucky.

Also, you should assume you will have to replace the Rover rear axle assembly with a bolt in replacement Series 3 or very late Series 2a Salisbury axle.

Fitting axles from a coil springer sounds like a good idea, but apart from the wider track requiring body modifications, there are serious problems with the steering, as the track rod needs to occupy the same space as the front leaf springs. There are solutions, but none of them very satisfactory, and most needing a very cooperative engineer.

2. Braking. The increase in power will require better brakes (and expect RMS to insist on this - check what they will require very early in the design phase). The simplest is to install the wider front brakes off a Series 3 109 six or V8, together with a boosted master cylinder. Possibly with dual circuits. Bolt in off a Series 3 six or late four. However, this requires, on the 2a, modification of the RH mudguard to provide room for the booster and dual master. Note that disc kits are available for Series Landrovers.

You need to consult with the RMS or the engineer who will be approving the modification before you actually start doing anything - this will potentially save a lot of grief.

Hope this helps

John

Thanks John.


I have managed to get a complete 2000 Discovery 2 so I'm looking to take the engine and gearbox out of that. I was also considering using the font and rear axles/diffs as well (this would give me four wheel disc brakes and help with the gearbox issue). If I did this I would look to use the brake system out of the Disco 2 (funnily this would mean I could also hook up ABS).


I will certainly be consulting with an engineer before starting but was hoping some else might have done this before.


Cheers,


Baden.

No way on earth will it pass engineering without literally turning it into a td5 defender.

Sent from my GT-I9300 using AULRO mobile app

Why not take the reverse approach and put the Series body on the disco chassis/running gear etc

Originally Posted by gavinwibrow

Why not take the reverse approach and put the Series body on the disco chassis/running gear etc

Because there is no way the Series body will meet the ADRs for the D2, which include things such as airbags. The difference in wheelbase is a minor issue compared to this! This sort of thing is possible starting from an early RR chassis that predates most ADRs, and this sort of thing could be done more easily using such a chassis, Series body, and D2 mechanicals.

The vehicle identity is legally tied to the chassis, and the completed vehicle must meet all the ADRs applicable to the original chassis. Effectively, this means the later the chassis, the tighter the restrictions.

John