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Cosworth pistons

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Old Oct 28, 2004 | 07:27 PM
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Default Cosworth pistons

What is the exact size of a standard Cosworth piston.
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Old Oct 29, 2004 | 12:19 AM
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What engine ?
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Old Oct 29, 2004 | 04:10 PM
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2 litre YB 4x4 or Escos motor.
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Old Oct 30, 2004 | 08:20 AM
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Check out the Cosworth site, theres a PDF with all pistons and sizes(in sales section)

90.820mm

http://www.cosworth.com

Steve
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Old Oct 30, 2004 | 01:17 PM
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Thanks for that,good info.
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Old Oct 31, 2004 | 08:50 AM
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Hmmm......if you look at my head gasket thread

https://passionford.com/forum/viewto...188155#1188155

Look at my piston pic, it says 91.275??? is this the piston size.Above you quoted 90.820mm.Does this mean i have oversize pistons?? Al.
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Old Oct 31, 2004 | 11:37 AM
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Yes they're definately oversize.I will check out my block assembly this afternoon because you can't see the stamping on the one i took out.
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Old Oct 31, 2004 | 05:15 PM
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My old ones just have YB1426 stamped on where yours has the size marked.
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Old Oct 31, 2004 | 05:17 PM
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Thanks allsteel, can anyone else shed any light??
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