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Matty-Tyler
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2011/02/14 07:53:18 (permalink)
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Pinto

hey guys, i have a couple of quick questions about a pinto block.

what's the STD comp Ratio on a pinto?
what's the STD Bore size for a pinto?
Will Cossy pistions fit?
Safest over bore in a pinto non 205?

Ta Matt
#1


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    fordsy
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    RE: Pinto 2011/02/14 12:48:34 (permalink)
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    what's the STD comp Ratio on a pinto?
    9.2:1

    what's the STD Bore size for a pinto?
    90.82mm

    Will Cossy pistions fit?
    Yes BUT they have a different pin retention system than STD pinto pistons so be careful.

    Safest over bore in a pinto non 205?
    Depends on the block. 1mm overbore is the most recommended in the workshop manual
    #2
    escortinadriver
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    RE: Pinto 2011/02/14 12:53:27 (permalink)
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    Standard comp ratio, 8.2 auto, 9.2 manual
    Standard bore 90.82 mm
    Cossie pistons will fit a standard bore
    'Safest' over bore is the next possible size, however up 93mm ok(ish), any more [B)] and you'll need to cross your fingers....

    Shaun

    Beat me to it....
    #3

    fordsy
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    RE: Pinto 2011/02/14 13:06:40 (permalink)
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    Not by much.

    The other things with cossie pistons is that standard ones are designed for turbos and will drop your compression ratio down to about 8:1
    #4
    Matty-Tyler
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    RE: Pinto 2011/02/14 13:55:25 (permalink)
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    I want to drop my comp anyway to cope with boost. Please explain the pin retention how it differs? I'm looking at the forged piston on eBay for my engine and I will need to get rods aswell.
    Ta Matty
    #5
    fordsy
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    RE: Pinto 2011/02/14 14:11:54 (permalink)
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    Std pinto pins are press fit. Std cossie pins are floating with circlips.

    Send a PM to Mk1Lotus. He supplied me with the majority of the bits in my Pinto bottom end (rods, pins, pistons) and he'll be able to sell you a setup that will work without messing around.
    #6

    Matty-Tyler
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    RE: Pinto 2011/02/14 14:33:31 (permalink)
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    Thanks mate will do tonight.
    #7
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