88mm pistons

[mcgee.m]

Ok wot diffracts does puting 88mm pistons in an c20xe

[Bubba]

increased displacement.

[mowgli]

a normal oversize is just for rebuilding a std engine, so won't do anything.

if the 88mm is a high compression jobby, then i'd expect an increase in output. but it all depends on the spec of the piston

[Graeme]

Iirc takes it to a 2090cc which is the closest you'll get to a 2.1

[Andy]

Ok wot diffracts does puting 88mm pistons in an c20xe
What does that mean in english???

[mowgli]

i think it was meant to say

'ok, what difference does putting etc.....'

[philip]

no point in 88mm unless going silly on the head and revs, save the block incase of failure and go next oversize, whether 86.5m 87 or 87.5mm

[MattBrown]

From what ive read not that much tbh.

Ive been looking into parts for my XE engine, and it genuinely seems that 87mm is the way to go, its about a square, 86mm bore and 86mm stroke does something with this "Square" engine.

What spec are you going for on the engine?

[mcgee.m]

full on race mate

[philip]

full on race is big money, if want ill spec a full engine if pm me what parts you have already

[mcgee.m]

can u send me full spec plz

[Angus Closier]

I have 88mm High comp pistons. Imo there is plenty of block left after machine work. If your after big power and Torque then why would you laps on displacement?

[philip]

there isnt enough meat in the block as you cant get any bigger piston than 88mm for the xe's. if you have a meltdown on 86.5, 87, 87.5mm theres always a better chance you can save the block rather than having to source a new block and go through decking, overboring, etc again and tbh the gains going to 88mm is negliable

[mcgee.m]

so wait gains can u get on 88mm or 87mm pistons eg bhp engine size does it go up to like a 2.1 bottom end

[philip]

probably make 1bhp more, nothing you would feel and notice. 87mm make circa 2045cc, 88mm makes circa 2090cc, unless building a 9k rpm xe then stick with the next size up the block will clean too and also anything over 87mm you need a cometic gasket due to bore size, so if kept 86.5 or 87mm you will save £100 with being able to keep a standard headgasket

[mcgee.m]

i think ill go 87mm then as wont that littal extra