So my SDi is at 221k miles and while the engine is tip top the gearbox is getting noisy, I did change its oil a couple of times. I've has this SDi for over 5 years and its been thru quarries and mountain roads.

Put 105k miles on it and have new sachs oil struts with the Kilen springs all round. Changed rear drums, wheel cylinders and a handbrake cable the Octavia is driving well. No rust, yeh they really were the best car body ever built. Then that front crash panel on them is like a Saab near enough. So instead of changing the 03 SDi I bought a scrap '05 TDi 90. Also red, so got doors and bumpers off it. Engine in the TDi seems good, about 190k miles on it. Was scrapped because the clutch collapsed or the slave cylinder is goosed.

 

After 105k miles of SDi and I do a lot of motorway travel, I have pulled the engine out of the TDi. Will look at the clutch to see whats in there, DMF or no DMF.

 

So, anybody know are these engines key coded to the pump or just the dashboard? Which module is the Engine Management and will the 70mph at 12 O'Clock work with a TDI module, the TDi clocks are 80mph at 12 noon.

 

A back yard job! Fred Fintstone ramp!

Hi Pat i cant help with your questions, but fair play to you for keeping the auld donkey alive

 

a mod will help though, by moving the thread to the mk1 octy section... wont you, @john999boy?

How do i move to MK1 Octy thread?

36 minutes ago, PatOctavia1 said:

How do i move to MK1 Octy thread?

It's been done.

18 hours ago, PatOctavia1 said:

How do i move to MK1 Octy thread?

 

moderators are very kind and helpful folk around here, when you ask politely

 

That's great thanks. 

So with the help of a bud' got the engine moved and took off the gearbox to reveal a corkscrewed Sachs DMF. 190k miles it had enough. Turbo looks good, and inlet manifold not too bad, usual choking around the EGR. Will clean the manifold tomorrow. The scrap octy is rocking on the center wheels. 

 

Been looking at the wiring loom and while the connectors to the brain seem to be the same the TDi engine has more sensors than the SDi. There are 4 wires going to the intercooler and a sensor in the sump of the TDi. Removing the engine loom is actually not a difficult job. The LH brain connector is for the engine and it 'T's into a loom running over the bulkhead, on the drives side where the fuses etc are there was 5 or 6 colour coded connectors that I removed after the wiper motor came out. What I don't know as yet, are there spare cables in the SDi loom to connect the extra sensors on the TDi? I can probably push light gauge wire onto the pins to make the connections.

 

So does anyone know if the existing loom in the SDi have the extra wires? I will know when it comes to fitting the TDi brain to the SDi body, would be good to know before starting though! Also if someone is looking rid of a surplus Sachs ALH suitable DMF, I am in the market.

 

Thanks, its a daunting couple of days doing the transplant and all the better with a heads up.

 

 

 

 

would it nit be better to transplant the ecu and the loom aswell? 

i dont know if the sdi ecu will accept tdi information, given they are quite different setups 

Yes indeed, I am switching over the ECU of course, I was just asking if anyone knows are the extra wires needed for the TDi already on the SDi loom. This of course is assuming the connectors are the same. I haven't looked at the SDi ECU as yet. Have everything out of the scrap TDi - steering column, ECU, Engine and Gearbox, clocks, wings, driveshafts. If the connectors are the same it should just be taking the engine loom connector off the ECU and the 5 or 6 connectors where the engine loom drops into the interior. Drat, should have taken photos. 

4 hours ago, PatOctavia1 said:

Yes indeed, I am switching over the ECU of course, I was just asking if anyone knows are the extra wires needed for the TDi already on the SDi loom.

 

I doubt it - I had a 1.4 16v classic that had some extras fitted new eg rear speakers - that needed additional wiring to support. I think looms vary spec to spec

 

 

Edited 11 September, 20214 yr by bigjohn

If you look about three-quarters of the way down this page (use a computer/big screen not phone) you'll see that both the 'wiring set for engine' and 'wiring set for engine compartment' differ according to engine codes of the car in question.

electrics Octavia (OCT) [EUROPA 2003 year] (7zap.com)

 

No chance of either loom having 'just in case' spare connectivity, I think.  Best to scavenge everything you possibly can from the donor car.

Thank you very much Wino, The connectors look the same and is as simple as take the whole engine loom out. the far end of the loom being the connectors dropping to the fusebox/controls. 

 

Will be a good few days before I go back to the engine change. DMF. If the phone rings regarding another Octavia 1 I might just sell the engine and put the new suspension on my own on to the new Octavia. We shall see. Damn those DMF's they spoil the party. Clean Octavia, TDi 90, 176k and electric front windows. These cars are in the jaws of the crushers. Now is the time that in 20 years hence some people will wish they bought 3 of them. As if you were taking a MK2 Escort or 2-door Avenger out of the scrap for 30 notes about 1987! In the legend that is and will become, The Octavia 1. The Skoda. this year and the next is the cheapest they ever will be. Y'see, they lust don't rust.

 

Thanks Wino the differences in the AQM and ALH looms are just air temp sensor and sump so even if I kept the old loom the yoke should still then start. Ballygrand.