displaying posts 1 to 4 of 4

Author Subject: High boost pistons/rods
simonjames

Seasoned Pro

Location: Whitland S.Wales

Registered: 23 Nov 2004

Posts: 6,219

Status: Offline

Post #1
I'm looking to get mine high boosted this winter, started having a look around for pistons/rods and already confussed myself LOL

What diameter, comp ratio, rod pin diameter etc etc is needed ?

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Posted 29th Jul 2011 at 15:13
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline

Post #2
86.5 or 87mm (go 87 and you get 50ccs of extra capacity but it's maximum bore and the block is scrap if it ever needs another re-bore. Also the cylinder walls are thinner which may cause issues if you go mad with the boost, I'd go 86.5mm myself and leave some material in hand for later if needed.)

Low comp Wossner pistons have a 22mm wrist/gudgeon pin. PEC or Saenz cater for this (Go for Saenz on HB builds though, not worth the chance on the cheaper rods IMO)

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Posted 29th Jul 2011 at 16:09
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

Status: Offline

Post #3
^^
This

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Posted 30th Jul 2011 at 19:04
atterz

Seasoned Pro

Location: Stafford

Registered: 18 Feb 2011

Posts: 1,134

Status: Offline

Post #4
Above also suitable for turbocharged engines as well ?

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owain wrote:
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Posted 31st Jul 2011 at 19:26

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