Filby1
Member
Registered: 12th Dec 03
Location: Brighouse
User status: Offline
|
What difference would you get in putting: i mean longer than standard and then shorter than standard?
A: Longer Con Rods
B: Shorter Con Rods
[Edited on 03-06-2005 by Filby1]
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
i think you'd want to alter the crank....
longer/shorter is same crank wont do much as the piston is going to move linearly up or down
i.e.... if you lengthen a rod, it wont stroke down as far, but will stroke higher
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
quote:
Originally posted by Adam Kindness
i think you'd want to alter the crank....
longer/shorter with same crank wont do much as the piston is going to move linearly up or down
i.e.... if you lengthen a rod, it wont stroke down as far, but will stroke higher
|
CorsAsh
Member
Registered: 19th Apr 02
Location: Munich
User status: Offline
|
If you put shorter ones in, would you get low compression?
|
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
|
what affect does doing this have anyways?
|
ed
Member
Registered: 10th Sep 03
User status: Offline
|
To change the stroke on an XE you can put on a 2.2 Ecotec crankshaft, that will increase the displacement to something like 2198cc, could then bore out the block to get it to about 2250-2300cc at a guess... Don't think changind the con-rods would do anything usefull though.
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
quote:
Originally posted by Siberia
what affect does doing this have anyways?
as ed says.....
lets you get more air/fuel into the cylinder
|
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
|
but when the piston gets to TDC would it not be sticking to high... and clattering the valves? interest concept though...
|
ed
Member
Registered: 10th Sep 03
User status: Offline
|
Think you need the 2.2 con-rods too acutally which are proably a bit shorter... Basically you are making the piston move down furthter into the bore.
|
Joff
Member
Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline
|
2.2 conrods too... I think I saw somewhere in the US that manufactured them 
|
Siberia
Member
Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline
|
you would loose some compression yeah?
|
ed
Member
Registered: 10th Sep 03
User status: Offline
|
No because the piston is still able to move to the fully upper most position at the top of the bore. The engine code for the 2.2 engine is X22XE so it uses the same compression ratio of 10.0-11.5 : 1...
But, now I'm slightly confused about it too 
[Edited on 03-06-2005 by 1800ed]
|
Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Online
|
shorter rod would make the piston drop lower in the bore on the down stroke, but wouldnt get as close to the head on the upward stroke, so compression ratio would be lower, as the volume of the space when the piston is TDC is bigger
longer rod would not go as low in the bore on down stroke, but would be closer to head on upward stroke, raising the compression ratio (TDC piston volume lower), IF... it didnt his the face of the head, which it probably would
|
