changing block from 2.5 to T5?

[Mental Wealth Doctor]

Would very much like to upgrade the block in my 855 awd lpt. there has been a oil leak down the back of the sump for a while, an im hoping its turbo return seal, and not lower sump gasket. any ways gonna be fitting a 16t and me7 manifold soon, so have a look then. i have a new clutch waiting to be fitted as mine judder's a little, but hasnt given up the ghost yet. but still with 16t prob should get clutch sorted, and if it's a take engine out job, could i replace block with t5 engine?, or is there a complete different wiring loom and major hassle involved?

[Dangerous Dave]

Should be the same engine, at least the main block is anyway, all the other stuff is ancillary really, and you unclip the wiring loom from the engine and it stays in the car, should have all the same sensors (M4.4 has a few extra sensors, but they're not on the engine)

[Mental Wealth Doctor]

yes same block just with some cylinder liners, what extra sensor's are they? or i'll rephrase, are they important ? needed even?
cos that sounds like a yes AWD T5 go

[Dangerous Dave]

The sensors aren't on the engine they're elsewhere in the engine bay, so no problems there. The best thing to do is get a V70 T5 engine, with the ecu, as these are a M4.4 too (unless you#'re getting it custom mapped) so it should drop straight in

[p fandango]

personallly i'd still with the 2.5 lump & stick the ME7 manifold & 16t onto that, you've got the extra cc over a T-5 engine then, the engine i'm building up is going to be a 2.5. I have heard they have got a weaker head gasket but not sure how much of a problem it is

[Mental Wealth Doctor]

personallly i'd still with the 2.5 lump & stick the ME7 manifold & 16t onto that, you've got the extra cc over a T-5 engine then, the engine i'm building up is going to be a 2.5. I have heard they have got a weaker head gasket but not sure how much of a problem it is

T5 has cylinder liners, making it stronger,

[p fandango]

T5 has cylinder liners, making it stronger,

running a 16t i don't think the slightly weaker block is going to be a problem

[Mental Wealth Doctor]

running a 16t i don't think the slightly weaker block is going to be a problem

fair enough, and cheers save some quids that way

[Mental Wealth Doctor]

Nice one Bomb, Gonna get Hamish to map her, but of course i would need to drive it there.
so v70 t5, happydays