Question? 1.6 engine into a 1.4

Sterling Archer

Simple Question, would a 1.6 engine fit into a 1.4. The car is a seat leon and i having trouble finding a 1.4 engine for it but i've found a few 1.6 engines

L-M

The engine will fit, the wiring, ecu, gearbox etc. etc. etc. may be different though. The 1.4 in the Leon is the same in the Vw Golf etc, I'm sure there are a few about. With an size engine change you have to change the log book, insurance tax etc. which isn't worth it.

Tipsy Mac

Yes should be easy enough fit wise, however the gearbox could be a different story and may be 1.4 specific for that car.

Alanstrainor

I'd be thinking it'd be more hassle than it's worth tbh. Creating a Frankenstein of a car is never the best of ideas, well, at least with something like a 1.4 leon. How old is it?

Sterling Archer

It's 02... the main problem is the engine code is axp and there just doesn't seem to be that may around

keith_donaghy

Check out your local vw breakers for an engine.

Trainers Car Dismantlers in Co Armagh deliver countrywide and seem to have a huge selection.

L-M

keith_donaghy wrote: »

Check out your local vw breakers for an engine.

Trainers Car Dismantlers in Co Armagh deliver countrywide and seem to have a huge selection.

Traynors are the ones your after. I'm sure there are plenty of those 1.4's around though.

congo_90

Does this not involve a lotta paper work (vrt stuff)?

Would it not be cheaper to replace the entire car than buy an engine and exchange for another?
Just food for thought there especially on the vrt if you ever go to resell.

bazz26

That engine was available in the VW Golf/Bora and Skoda Octavia too.

Putting a 1.6 litre engine would at the very least mean the gearbox would need to be replaced also. Surely it would not be economically viable to do this on a 7 year old Leon?

JHMEG

In a lot of cases the 1.6 litre version of an engine is physically identical but with a different crankshaft and conrods to accomodate a longer stroke. So it probably will be a perfect fit.

ianobrien

Physically getting it in and bolted isn't the biggest problem. The problem would be getting it running right. I imagine that running the 1.6 off the 1.4 fueling map in the ECU will result in lean running. The solution will be to change the ECU.

The ECU will have to be changed, and is the immobliser tied into the ECU?

Will the 1.6 ecu "plug into" the 1.4 loom, and is the 1.6 ECU compatible with the 1.4 loom, assuming that it does plug in?

Will the Immobiliser reject the ECU and revert to "safe mode"? For example I know that for some VW, the immobiliser is not in the ECU, but in the dash instrument cluster, and on start-up, this checks the key & ECU are as they are supposed to be?

I imagine given the above questions, the car's current value, the cost of getting and paying somebody to change the engine and the VRT/Insurnace questions, that the best course of action is to send the car to the great scrapyard in the sky.

mullingar

ianobrien wrote: »

Physically getting it in and bolted isn't the biggest problem. The problem would be getting it running right. I imagine that running the 1.6 off the 1.4 fueling map in the ECU will result in lean running. The solution will be to change the ECU.

The ECU will have to be changed, and is the immobliser tied into the ECU?

Will the 1.6 ecu "plug into" the 1.4 loom, and is the 1.6 ECU compatible with the 1.4 loom, assuming that it does plug in?

.

Depending on the engine. Some engines that are very similar in design may have the same ECU.

ECU's control the fuel injectors timing (among other things). These injectors on the 1.6 could be eg 100lph vs the injectors on the1.4 eg80lph. So the timing should be near identical so cc is not a factor in ECU's fuel control

What I would do is get the VAG part numbers of the 1.4 ECU and 1.6ECU and if a match, it should drop-in!