My fresh onvi cupra (now of the road full forged engine rebuild onway)

[chaazza]

Yea should look good iv been thinking of other parts I can spray to what you think Joe ?

 

[CupraElliott]

Whilst the crank is out you might aswell get the engine bored slightly? Maybe to 1.9? It costs around £100 and the piston prices are pretty similar 81-83mm.

Easy to work on aren't they mate when you have the Haynes there.

 

[chaazza]

How much are new pistons bud were did you get yours to

 

[CupraElliott]

Been quoted just shy of £400 for 83mm Mahle pistons from INA.

 

[chaazza]

Hmm I might look into it then
Am I right in thinking that standard pistons are forged any way

 

[CupraElliott]

Yeah there Plenty strong enough.

Just with the bottom end all apart it's worth doing the bottom end properly.

Out or curiosity why did you remove the crank anyway?

 

[chaazza]

Mainly so I can replace the bearings and get the block acid dipped ready for spraying

 

[joehirth]

Mainly so I can replace the bearings and get the block acid dipped ready for spraying

Over bore to 1.9 you'll regret it if you don't, quicker spool for a laggy turbo if you choose that route in the future. Standard pistons are not fully forged but ok up to around 400 by the looks of things. I would replace them too, as Elliott says no price difference in the different sized pistons.

 

[chaazza]

I was planning on keeping my pistons

 

[joehirth]

I was planning on keeping my pistons

I would change them whilst it's in bits. You don't want that to be the factor in stopping you going over the 400 mark. Even with a 1.9 you'll have a better drive and power on standard turbo.

 

[James.Judd.1]

Fourtwofive (Joe) has a 1.9 k03hybrid and that makes immense amount of torque and spools like mad

 

[chaazza]

I did see he was getting a lot of torque maybe I should have it bored to a 1.9

 

[joehirth]

I did see he was getting a lot of torque maybe I should have it bored to a 1.9

Yeah do it. I promise you will regret it if you don't.

 

[turboholic]

do it mate! i regret not doing mine now!

 

[chaazza]

So what would I need to do it just bigger pistons

 

[joehirth]

Bigger pistons, new rings which you would get anyway, along with the other bits that you're going to replace anyway.

 

[chaazza]

So the only extra parts would be bigger pistons and the re-bore yea

 

[turboholic]

And bigger headgasket

 

[chaazza]

Why bigger head gasket

 

[turboholic]

Because your bores will be bigger you need a headgasket with larger holes