Closed vs. open deck
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So a closed deck will offer a stout, powerful delivery, more so than an open deck as long as the proper precautions are made to ensure it is efficiently cooled?
But a closed deck probably wouldn't be wise as a daily driver?
more like a race engine that will be rebuilt regularly
But a closed deck probably wouldn't be wise as a daily driver?
more like a race engine that will be rebuilt regularly
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Joined: Feb 2004
Posts: 23
Originally posted by whitelegacy98
well I knew the difference but that is nonetheless a helpful link...but the question remains, is the EJ22 open or semi?
well I knew the difference but that is nonetheless a helpful link...but the question remains, is the EJ22 open or semi?
anything else is open..
i could be wrong though.
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From: Honolulu, HI
Car Info: 1991 Toyota MR-2 Turbo
Originally posted by Tarmac02
But a closed deck probably wouldn't be wise as a daily driver?
But a closed deck probably wouldn't be wise as a daily driver?
.edit: I couldn't find a pic of the stock head gasket, but here's a copper one
http://www.rocketindustries.com.au/o...ad_Gaskets.htm
Notice how it matches a closed deck design. It matches the coolant channels going into the head.
Open deck blocks are just cheaper to manufacture than closed deck. Any cooling problems that are attributed to a closed deck are more than likely a poor design to start with.
Last edited by Mister 2; Feb 27, 2004 at 09:56 PM.
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Originally posted by Kostamojen
Purposeful difference? Well, closed deck = capable of more HP because the piston walls wont flex around as with a open deck block.
Purposeful difference? Well, closed deck = capable of more HP because the piston walls wont flex around as with a open deck block.
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Originally posted by Mister 2
Yep, while open deck blocks are easier and cheaper to manufacture.
Yep, while open deck blocks are easier and cheaper to manufacture.
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Car Info: 1991 Toyota MR-2 Turbo
Originally posted by Kostamojen
I presume "purposeful difference" has more to do with engineering than economics.
I presume "purposeful difference" has more to do with engineering than economics.
PURPOSE
Main Entry: 1pur·pose
Pronunciation: 'p&r-p&s
Function: noun
Etymology: Middle English purpos, from Old French, from purposer to purpose, from Latin proponere (perfect indicative proposui) to propose -- more at PROPOUND
1 a : something set up as an object or end to be attained : INTENTION b : RESOLUTION, DETERMINATION
2 : a subject under discussion or an action in course of execution
synonym see INTENTION
- on purpose : by intent : INTENTIONALLY
to summerize:
Closed deck - for an engineer this means a stronger block
Open deck - for an accountant this means less expensive manufacturing
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