Page 1 of 1
What head gasket to use with 86mm cylinder bore in 2.0l TC
Posted: October 3rd, 2007, 2:59 pm
by 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
Posted: October 4th, 2007, 9:09 am
by 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.
Posted: October 4th, 2007, 9:07 pm
by Derwyn
Guy Croft wrote: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.
Posted: October 5th, 2007, 8:12 am
by Guy Croft
Photos, sure, no doubt that's what the forum needs.
'A picture is worth a thousand words..'
GC
Posted: October 5th, 2007, 1:39 pm
by DamirGTI
Derwyn wrote:Guy Croft wrote: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