# some new updates of the Mazworx/PRL Drag S15 Silvia

**URL:** <https://forums.speedlife.net/t/some-new-updates-of-the-mazworx-prl-drag-s15-silvia/196373>\
**Category:** PittSpeed Off Topic\
**Created:** [March 26, 2008, 7:18pm UTC](https://forums.speedlife.net/t/some-new-updates-of-the-mazworx-prl-drag-s15-silvia/196373 "2008-03-26T19:18:38Z")\
**Posts on this page:** 1\
**Showing post:** 28

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**Author:** ![Mark\_Morris](https://avatars.discourse-cdn.com/v4/letter/m/a9a28c/32.png) [@Mark\_Morris](https://forums.speedlife.net/u/Mark_Morris)\
**Post date:** [March 27, 2008, 10:35am UTC](https://forums.speedlife.net/t/some-new-updates-of-the-mazworx-prl-drag-s15-silvia/196373/28 "2008-03-27T10:35:48Z")

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> [@Holy shit 540 guys grandmas house](https://forums.speedlife.net/t/holy-shit-540-guys-grandmas-house/35669/11):
>
> basically it looks identical inside to a b-series honda head, except it still used shims. the rockers are shaft mounted so they can’t fly off like the standard sr20 heads. this one however was setup all custom to eliminate the shims, so really we have nothing we should break. we should be able to build however much boost we want on the chip with this thing.

Nice-- sounds like that version addresses the weak points of the standard head.

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