YB pistons

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Jun 10, 2004 | 11:14 AM

cossied

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Part of the Furniture

Joined: Apr 2004

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YB pistons

Hi, anyone know what the YB numbers on the top of the pistons mean i am rebuilding an Escort cosworth big tubo engine and the new 4x4 pistons seem to come just above the block surface on TDC the old pistons have YB0618/03 and the new ones YB1426 any help appreciated before i put the head on. thanks ED

Jun 10, 2004 | 11:45 AM

frog

0-60 in 17 seconds (eek)

Joined: Apr 2004

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From: Berkshire

Part numbers ?

Jun 10, 2004 | 12:02 PM

JohnP001

PassionFord Regular

Joined: May 2004

Posts: 489

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From: West Sussex

I’ve just rebuilt my Escort Cossie large turbo, and yes the pistons did protrude from the block slightly. As for part numbers, the only markings on the top of my pistons was the arrow.