Hi,
I have for sale a brand new kit of Wiseco pistons for NA application or low boost SC.
£500 +delivery
Wiseco 86 Mm 10:1 Piston Kit
Started by
2-20
, Jun 11 2016 09:47 PM
17 replies to this topic
#2
gaffer1986
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Posted 11 June 2016 - 10:26 PM
What does this do?
#3
The Batman
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Posted 11 June 2016 - 10:36 PM
Increase compression ratio
#4
techieboy
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Supercharger of Doom
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Posted 11 June 2016 - 11:46 PM
10:1 is standard CR on the Z22SE, isn't it?
#5
smiley
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Thetan level 15
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Posted 12 June 2016 - 01:20 AM
yes.
#6
vocky
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Posted 12 June 2016 - 07:46 AM
these are best suited for a low mileage engine due to the standard 86mm bore.
Ideal for a stage 3 SC (300bhp) when matched with some steel rods.
#7
The Batman
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Posted 12 June 2016 - 08:30 AM
My mistake, so used to seeing 8.9:1 
#8
2-20
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Billy No Mates
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Posted 17 June 2016 - 08:42 PM
New price: £450 delivered
#9
gaffer1986
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Posted 17 June 2016 - 09:04 PM
What happens when it's high mileage?these are best suited for a low mileage engine due to the standard 86mm bore. Ideal for a stage 3 SC (300bhp) when matched with some steel rods.
#10
ArticMonkey
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Posted 17 June 2016 - 09:13 PM
You then need oversized bores. So these wouldn't suit any car over 5-6kWhat happens when it's high mileage?these are best suited for a low mileage engine due to the standard 86mm bore. Ideal for a stage 3 SC (300bhp) when matched with some steel rods.
#11
gaffer1986
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Posted 17 June 2016 - 09:17 PM
Can't you just rebore a high mileage car?
#12
2-20
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Billy No Mates
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Posted 17 June 2016 - 09:18 PM
[font="arial, helvetica, sans-serif;"]High mileage means wear so the bores might be out of tolerances and the [color=rgb(0,0,0);text-align:justify;]the correct "cross hatch" finish for the piston rings will be worn as well[/color][/font]
First you check bore size for any wear and if still within limit you can flexhone the bore to restore a cross hatch finish
#13
techieboy
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Posted 17 June 2016 - 09:18 PM
Yes. Which means you need wider pistons than the standard 86.0mm that these are.
#14
gaffer1986
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Posted 17 June 2016 - 09:29 PM
That makes sense.
#15
fezzasus
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Whipping Boy
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Posted 18 June 2016 - 08:05 AM
To dispute the above, the Z22SE has pressed in cast iron liners which means much straighter bore than cylinders bored directly into the block. This means you're much less likely to see bore polishing and there's a good possibility you can directly drop the pistons in without needing to re-bore. My 90k engine had perfect honing when it came out of the engine.
Worth a borescope if you're not certain
#16
oakmere
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Posted 19 June 2016 - 07:07 PM
After approx 50k my engine had no signs of bore wear and just had a light hone before I fitted new rings when I rebuilt the engine.
#17
gaffer1986
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Posted 19 June 2016 - 07:18 PM
These things seem to be dependent on the individual engine.
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