To swapping enginew

[Lexyy]

Hi all. 
 

I have some problems with my Lexus is220d 2006 year. And I need to change engine, so can I put there engine from is250? 

[Linas.P]

In theory yes... but not easily. It is not a simple swap where you can just put the core 4GR-FSE in place of 2AD-FHV.

Basically you will need a lot of parts, all the engine, with all accessories (like alternator, AC compressor) and all related ECUs, ABS pump, all the engine wiring, including fuse boxes, exhaust. Many other less important cosmetic parts like undertrays, rear bumper will be different. You will as well ideally need new fuel tank, pump and all the lines. I guess you could flush the tank, but pump will be different and the lines on engine side will be different. 

As well I am assuming you swapping manual to manual... in which case you need to get specifically manual donor, there are some other minor differences in other part numbers as well between manual diesel and petrol. I guess conversion to auto is possible as well, but then you will need host of other parts, pedals, dash, interior wiring, other interior parts etc. Gearbox between petrol and diesel are different, but I believe they are compatible, maybe not straight swap, but could be made to work.

So the most realistic would be get whole wrecked IS250 and transfer all the parts related to engine and drivetrain. Note - if you get UK wreck (which is most likely what you can get for decent price), then there will be further complications as there are some minor differences in wiring between RHD/LHD, again possible to overcome and requires harness modification.

So again - it is possible, but this is major project. I wanted to do this project for a while, because in UK we have a lot of dead IS220ds selling for £500 with blown engines, I will probably do it one day (not 4GR swap, but maybe 3GR from GS, or 3UZ or even 1UR from LS would be interesting), but I need large garage with lift, because theoretically it is not difficult if you have all parts - remove from your car, take from another car and install it. It is just tedious, requires 100s of parts and loads of space.

 

[H3XME]

It would be cheaper to just buy an IS250 than trying to swap the engine. Standalone engine is £600 + all the other parts you mentioned.. could easily be another grand and at that point you're £1500 deep before you even started any work and for £1500 you can buy a whole car.. Prices will be different in other countries though I'm sure

[Linas.P]

9 minutes ago, H3XME said:

It would be cheaper to just buy an IS250 than trying to swap the engine. Standalone engine is £600 + all the other parts you mentioned.. could easily be another grand and at that point you're £1500 deep before you even started any work and for £1500 you can buy a whole car.. Prices will be different in other countries though I'm sure

Not in EU, decent IS250 is like ~7000EUR. But I agree that either way just getting IS250 could be cheaper option - especially if you planning to pay someone to do it. Obviously, unless you like working on the cars yourself, you have garage already and necessary mechanical skills and you have option of taking one worthless IS220d with blown engine and other worthless IS250 which is written off in the crash and build one working IS250 from IS220d shell. 

[H3XME]

24 minutes ago, Linas.P said:

Not in EU, decent IS250 is like ~7000EUR. But I agree that either way just getting IS250 could be cheaper option - especially if you planning to pay someone to do it. Obviously, unless you like working on the cars yourself, you have garage already and necessary mechanical skills and you have option of taking one worthless IS220d with blown engine and other worthless IS250 which is written off in the crash and build one working IS250 from IS220d shell. 

Oof, big money for an older car

[Mr Vlad]

Hi Edgars. Anything is possible so longs as you have the Time and the Money and more importantly the Know-how. 

Linas has stated a lot that would need doing but he's ommited welding work to relocate engine mounts and that alone costs time skill accuracy.

If you intend to do it yourself and you work full time then it'll take a couple or more months to do.

I suspect the drive shafts are different. The rear differential is different. The propshaft is different. Probably suspension geometry is different too as the inner wings are different between the diesel and V6 engine.

Linas has quoted around 7k euros. I don't know but going off that it would probably cost more to change an engine type than to buy the car.

You'd need to check with the equivalent to our MOT because at the end of the day you've re-fabricated the engine bay and all the work would have to be checked so make sure the vehicle is road worthy.

I'm not trying to put you off but there's so much more than just changing from the diesel engine to the V6 petrol.

[Linas.P]

2 hours ago, Mr Vlad said:

ommited welding work to relocate engine mounts and that alone costs time skill accuracy.

I suspect the drive shafts are different. The rear differential is different. The propshaft is different. Probably suspension geometry is different too as the inner wings are different between the diesel and V6 engine.

None of that is required. 

Engine mounts are different, but they bolt on from your "donor car" the holes for bolts are there already, hence I have advised to get whole car and not just engine. If you get just engine, then you will be piecing never ending puzzle for millennia and won't even know how close your are to the end. The rest of what you mentioned is the same between IS250 and IS220d manuals, different story for automatic.

I am not going to comment on local laws - that is for OP to figure out if he is planning to swap the engine. If that not allowed, then no point even considering it.

The other point - yes, this only makes sense if he is doing all the work himself. If he is paying someone to do it, then I don't even going to speculate how much it will cost, certainly more than 7000EUR.