[Mk2] [Turbo] Pistons with bottom end in

[zebidi]

Is it possible to remover the head, keep bottom end in to replace/remove the pistons on the rev3 engine?

I have seen articles about it but have all so far been on the rev1s and 2s which have a huge sump plate.

Thanks

[simmo490]

yeh remove sump, remove head undo big end caps and push piston out of the top

[3sgte]

yeh remove sump, remove head undo big end caps remove piston cooling nozzles so you dont bend/damage them and push piston out of the top

[simmo490]

sorry.

remove TB
remove rocker cover
remove exhaust

and the list goes on

[Lewis Jay]

yeh remove sump, remove head undo big end caps remove piston cooling nozzles so you dont bend/damage them and push piston out of the top

Drain oil before doing any of the above, oh disconnect battery too.

[3sgte]

sorry.

remove TB
remove rocker cover
remove exhaust

and the list goes on

sorry mate not nit picking ,but seen too many engines rebuilt by bodgers who have bent the cooling nozzles meaning the pistons burn out I just thought it was worth mentioning as not too many novice mechanics may even know they are up there . It Was a constructive addition ,not a sarcastic dig

[simmo490]

before u did that u would probably want to put it on stands

[simmo490]

lol yeh tis cool mate

[spannerman]

Not sure of the reason your fitting pistons but if its an upgrade, IE new rings. I thought it was standard practice to hone the bores to allow the new rings to bed in correctly.

As far as i know the rings won't bed as well without a quick hone.

Spannerman

[zebidi]

its replacement factory parts, will i still need to rebore?

[3sgte]

justa quick hone will suffice just to aid the bedding in of the rings
That is of course as long as the bores are in pretty good shape to begin with

[karammander]

you can hone the bores while the block is in the car but theres nothing like honing them on a bench with a torque plate.

cheers karam