# oversized or stock bore??

**URL:** <https://forums.speedlife.net/t/oversized-or-stock-bore/96253>\
**Category:** SON240sx Automotive\
**Created:** [May 24, 2006, 9:55am UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253 "2006-05-24T09:55:10Z")\
**Posts on this page:** 12\
**Page:** 1

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**Author:** ![JaBeAr](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@JaBeAr](https://forums.speedlife.net/u/JaBeAr)\
**Post date:** [May 24, 2006, 9:55am UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/1 "2006-05-24T09:55:10Z")

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i was just wondering if CP forged piston 89.50mm/9:1 is a oversized piston or is this a stock bored thank u

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**Author:** ![JaBeAr](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@JaBeAr](https://forums.speedlife.net/u/JaBeAr)\
**Post date:** [May 24, 2006, 9:55am UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/2 "2006-05-24T09:55:10Z")

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i was just wondering if CP forged piston 89.50mm/9:1 is a oversized piston or is this a stock bored thank u

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<div class="post-metadata">

**Author:** ![JaBeAr](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@JaBeAr](https://forums.speedlife.net/u/JaBeAr)\
**Post date:** [May 24, 2006, 9:55am UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/3 "2006-05-24T09:55:10Z")

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i was just wondering if CP forged piston 89.50mm/9:1 is a oversized piston or is this a stock bored thank u

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<div class="post-metadata">

**Author:** ![robbbby](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@robbbby](https://forums.speedlife.net/u/robbbby)\
**Post date:** [May 24, 2006, 2:24pm UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/4 "2006-05-24T14:24:02Z")

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89.5? I think you mean 86.5.

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**Author:** ![robbbby](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@robbbby](https://forums.speedlife.net/u/robbbby)\
**Post date:** [May 24, 2006, 2:24pm UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/5 "2006-05-24T14:24:02Z")

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89.5? I think you mean 86.5.

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**Author:** ![Habib\_Albi](https://avatars.discourse-cdn.com/v4/letter/h/ed8c4c/32.png) [@Habib\_Albi](https://forums.speedlife.net/u/Habib_Albi)\
**Post date:** [May 24, 2006, 3:51pm UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/6 "2006-05-24T15:51:04Z")

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its 86.5mm and yes its an over bore of .5 mm stock is 86mm

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<div class="post-metadata">

**Author:** ![JaBeAr](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@JaBeAr](https://forums.speedlife.net/u/JaBeAr)\
**Post date:** [May 24, 2006, 9:55am UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/7 "2006-05-24T09:55:10Z")

</div>

i was just wondering if CP forged piston 89.50mm/9:1 is a oversized piston or is this a stock bored thank u

---

<div class="post-metadata">

**Author:** ![robbbby](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@robbbby](https://forums.speedlife.net/u/robbbby)\
**Post date:** [May 24, 2006, 2:24pm UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/8 "2006-05-24T14:24:02Z")

</div>

89.5? I think you mean 86.5.

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<div class="post-metadata">

**Author:** ![Habib\_Albi](https://avatars.discourse-cdn.com/v4/letter/h/ed8c4c/32.png) [@Habib\_Albi](https://forums.speedlife.net/u/Habib_Albi)\
**Post date:** [May 24, 2006, 3:51pm UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/9 "2006-05-24T15:51:04Z")

</div>

its 86.5mm and yes its an over bore of .5 mm stock is 86mm

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<div class="post-metadata">

**Author:** ![JaBeAr](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@JaBeAr](https://forums.speedlife.net/u/JaBeAr)\
**Post date:** [May 24, 2006, 9:55am UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/10 "2006-05-24T09:55:10Z")

</div>

i was just wondering if CP forged piston 89.50mm/9:1 is a oversized piston or is this a stock bored thank u

---

<div class="post-metadata">

**Author:** ![robbbby](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@robbbby](https://forums.speedlife.net/u/robbbby)\
**Post date:** [May 24, 2006, 2:24pm UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/11 "2006-05-24T14:24:02Z")

</div>

89.5? I think you mean 86.5.

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<div class="post-metadata">

**Author:** ![Habib\_Albi](https://avatars.discourse-cdn.com/v4/letter/h/ed8c4c/32.png) [@Habib\_Albi](https://forums.speedlife.net/u/Habib_Albi)\
**Post date:** [May 24, 2006, 3:51pm UTC](https://forums.speedlife.net/t/oversized-or-stock-bore/96253/12 "2006-05-24T15:51:04Z")

</div>

its 86.5mm and yes its an over bore of .5 mm stock is 86mm