What head gasket to use with 86mm cylinder bore in 2.0l TC

[Walezy]

Hello Guy,
I would like to ask you if you know what head gasket to use with 86mm cylinder bore in 2.0l engine. Will the standard TC gasket be ok or i need to get a custom one made.
I will be using this bore with forged pistons and i want to be sure that i get the parts for this conversion before ordering custom pistons.
Best regards
Tomasz

[Guy Croft]

The OE 16v Astadur gasket can certainly cope with 85mm bore, but keep the piston crown 0.5mm below the block deck or it might hit the fire ring - it will overlap fractionally into the bore.

GC

edit note: Assume this is a 16v conversion unit? If not please e mail me.

[Derwyn]

The OE 16v Astadur gasket can certainly cope with 85mm bore, but keep the piston crown 0.5mm below the block deck or it might hit the fire ring - it will overlap fractionally into the bore.

GC

I¢ž¢ve just had a head gasket failure for the exact same reason, though it was on a 2.4 pinto with a bore of 92.8mm. The head gasket specified was for a maximum bore of 92.8, and when lined up with the block, overlapped into the bore. The location of contact between the piston and gasket was right next to a water galery that then leaked into the bore.

The head went back on tonight, and will need the last stage of a seven stage torque sequence when the engine is cold tomorrow. I'll take some photos of the fire rings if anyone is interested?

Derwyn.

[Guy Croft]

Photos, sure, no doubt that's what the forum needs.

'A picture is worth a thousand words..'

GC

[DamirGTI]

The OE 16v Astadur gasket can certainly cope with 85mm bore, but keep the piston crown 0.5mm below the block deck or it might hit the fire ring - it will overlap fractionally into the bore.

GC

I¢ž¢ve just had a head gasket failure for the exact same reason, though it was on a 2.4 pinto with a bore of 92.8mm. The head gasket specified was for a maximum bore of 92.8, and when lined up with the block, overlapped into the bore. The location of contact between the piston and gasket was right next to a water galery that then leaked into the bore.

The head went back on tonight, and will need the last stage of a seven stage torque sequence when the engine is cold tomorrow. I'll take some photos of the fire rings if anyone is interested?
Derwyn.

Hello !

Yes please ! I'm very interested in viewing those photos .

Regards
Damir