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Author Topic: Piston help  (Read 1653 times)

mustangman1990

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  • Posts: 12
Piston help
« on: March 05, 2012, 11:51:00 AM »
I have a melted piston in my 91 XR2 and have been looking for one through every parts source I could find. NAPA shows one online but I cant cross the part number to make sure it is for a turbo engine. Looked on Wiseco's site and couldnt find anything. I have a parts car but really didnt want to tear down a good engine for one part.
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Rocketman

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    • 91 BPT AWD Capri & 1991 XR2
    • http://www.werbatfik.com
Piston help
« Reply #1 on: March 05, 2012, 08:24:00 PM »
You can get stock cast pistons for a 1.6L Miata - they're the same save for the compression ratio. Bumping the compression doesn't hurt, it makes the car much more responsive & it's safe as long as you keep using premium fuel.

The stock XR2 pistons are 7.9:1 CR which is pretty low, the 9.0's work really well
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"


rcdraco

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Piston help
« Reply #2 on: March 06, 2012, 11:09:00 AM »
Obviously with the 9.0 compression you would also run premium fuel, but the cost is worth it when the car cranks that good.
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Rocketman

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    • 91 BPT AWD Capri & 1991 XR2
    • http://www.werbatfik.com
Piston help
« Reply #3 on: March 06, 2012, 11:11:00 AM »
Should be using premium with a turbo car either way.
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"