cast 1800cc zetec piston crown thickness

CVH and Zetec tuning, suspension and braking mods.

cast 1800cc zetec piston crown thickness

Postby 285Andy on Sat May 07, 2005 10:02 am

will 6.34mm be able to hang onto 13-14 lbs of boost ok? or they just gonna blow through?

thank ye :)
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Postby Ruishy1 on Sat May 07, 2005 12:07 pm

you need a minimum of 6% of the bore size to maintain their integrity. how much has been machined off them mate ?
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Postby 285Andy on Sat May 07, 2005 4:00 pm

ive not taken anything off them yet but 6.34mm is what will be left after ive taken 2.5 mm off them if you see what i mean :) their actual thickness before machining is 8.84mm.

ta muchly :)
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Postby Ruishy1 on Sat May 07, 2005 4:20 pm

should be fine up to about 1 bar of boost mate, if you want them to last a little longer i suggest ceramic coating. stops heat entering the piston crown :D but make sure you have a decent I/C because it tends to heat everything up if you dont.

Ross
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Postby freak power on Sat May 07, 2005 4:41 pm

Fine with 1 bar.
What are you building Zetec turbo or ZVH ???
Now driving a 1999 Audi S3 with 2.1 20v OD HTAGT3582r Turbo

Bring on the 650+Bhp 4x4 monster
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Postby 285Andy on Sat May 07, 2005 5:09 pm

just a very cheap zetec turbo :lol: i just need to know what there like so im biting the bullet. the cvh in the car needs a rebuild so i thought what the hell. new pistons for turbo cvh cost 450 odd quid plus skimming at another 25 quid a piston for low compression so it seemed a good idea at the time when i was offered a 1.8 zetec from a xr2i :lol:

1 bar max will do for me just fine. thanks very much fella's :D :D
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Postby Ruishy1 on Sat May 07, 2005 6:00 pm

this guy on ebay does the ceramic coating, my mates ZT has them, 2ltr, calibra pistons, rs500 cooler, FRST management with custom chip. and it hasnt missed a beat. apart from when he crashed into the back of a pug :lol:
http://stores.ebay.co.uk/MD-PERFORMANCE ... esstQQtZkm
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