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Author benefits of a 2.1 XE
J4LDO
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Registered: 19th Feb 03
Location: glasgow ish
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20th Sep 03 at 12:18   View User's Profile U2U Member Reply With Quote
whats involved in doin this,and does it make a noticeable diff?
Munchie
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Registered: 17th Jul 01
Location: I swap goats for mobile phones
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20th Sep 03 at 12:18   View User's Profile U2U Member Reply With Quote
PISS OFF
J4LDO
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Registered: 19th Feb 03
Location: glasgow ish
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20th Sep 03 at 12:20   View User's Profile U2U Member Reply With Quote
eh? whats that awe aboot
Daimo B
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Registered: 20th Mar 00
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20th Sep 03 at 12:33   View User's Profile U2U Member Reply With Quote
To make it a 2.1, you need oversized 88mm pistons. Think the block needs to be worked on as well to give the extra diametre.

Wont give hugggeeee increase, but is a good start if you want to put throttle bodies on in the future.
J4LDO
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Registered: 19th Feb 03
Location: glasgow ish
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20th Sep 03 at 12:41   View User's Profile U2U Member Reply With Quote
its basically a rebore then ?
Makarus
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Registered: 25th Jun 02
Location: Nottingham/Derbyshire Boarder.
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20th Sep 03 at 12:41   View User's Profile U2U Member Reply With Quote
The Omega pistons are a good replacement so I am told.
Neshol
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Registered: 10th Jul 02
Location: Midlands
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20th Sep 03 at 12:55   View User's Profile U2U Member Reply With Quote
Yes rebore of a C20XE I imagine
Daimo B
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Registered: 20th Mar 00
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20th Sep 03 at 14:04   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by J4LDO
its basically a rebore then ?


Yeah, standard 2.0litre bored out.
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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20th Sep 03 at 14:07   View User's Profile U2U Member Reply With Quote
get pocketed pistons as well then u car run a monster cam, raaa!
J4LDO
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Registered: 19th Feb 03
Location: glasgow ish
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20th Sep 03 at 16:55   View User's Profile U2U Member Reply With Quote
How much for pocketed pistons 88mm ?
Marc
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Registered: 11th Aug 02
Location: York
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20th Sep 03 at 16:58   View User's Profile U2U Member Reply With Quote
is a 2.2 possible? as ive only seen 2.1s...
Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
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20th Sep 03 at 17:05   View User's Profile U2U Member Reply With Quote
Cutting it a bit fine upping to 2.2
Neshol
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Registered: 10th Jul 02
Location: Midlands
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20th Sep 03 at 17:12   View User's Profile U2U Member Reply With Quote
Can someone explain pocketed pistons for me? Or direct me to some site with the relevant info... thanks!
Andy
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Registered: 28th Dec 99
Location: Cumbria, UK
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20th Sep 03 at 17:24   View User's Profile U2U Member Reply With Quote


The key to getting more power out these engines is not just to fit longer duration cams (which keep the valves open longer for more fuel and air) but to fit higher lift cams. These raise the valve higher away from the head, again allowing more fuel and air in for more power. Problem is that the more valve lift there is, the closer they come to the piston, when the piston is near to top dead centre. Too much lift and they'll make contact - bad news! The solution is to cut pockets in the pistons, which in effect makes room to accommodate the extra valve lift.
l33t corsa
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Registered: 14th Aug 01
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20th Sep 03 at 19:02   View User's Profile U2U Member Reply With Quote
Is compression affected with those pistons?
Neshol
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Registered: 10th Jul 02
Location: Midlands
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20th Sep 03 at 20:17   View User's Profile U2U Member Reply With Quote
Cheers for that Andy

 
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