ZT (CVH Turbo) piston ring gaps question.

CVH and Zetec tuning, suspension and braking mods.

ZT (CVH Turbo) piston ring gaps question.

Postby disc on Thu Jul 14, 2005 10:46 am

Haynes says that piston ring gaps must be:

CVH Turbo

Compression rings . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.30 to 0.50 mm
Oil control ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.40 to 1.40 mm


Zetec 1.8 litre

Top compression ring . . . . . . . . . . . . . . . . . . . . . . . . 0.30 to 0.50 mm
Second compression ring . . . . . . . . . . . . . . . . . . . . . . 0.30 to 0.50 mm
Oil control ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.38 to 1.14 mm


Is standart(N/A) ring gaps are good for Turbo engine? May be for turbo conversion gaps must be a bit bigger than N/A?
Sorry for my bad english...
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Postby freak power on Thu Jul 14, 2005 5:21 pm

When i do them i do them to 18 thou and piston to bore clearance of 1 thou over manufacturers spec just so there's no chance of skirt drag as a turbo engine produce's alot more heat then a N/A engine.
Now driving a 1999 Audi S3 with 2.1 20v OD HTAGT3582r Turbo

Bring on the 650+Bhp 4x4 monster
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