closed deck block ???
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closed deck block ???
Hi,
A Type R that I'm interested in has got a 'closed deck block' in it apparently as it's had a new engine in it at some point in it's life.
Can someone tell me what this means? Any advantages/disadvantages??
Cheers,
Paul.
A Type R that I'm interested in has got a 'closed deck block' in it apparently as it's had a new engine in it at some point in it's life.
Can someone tell me what this means? Any advantages/disadvantages??
Cheers,
Paul.
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Joined: Aug 1999
Posts: 7,957
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that looks liek an aftermarket conversion closed deck block, but it is the same principle.
advantage is stronger holding of cylinder walls which prevent walking at very high boost conditions and thus help to maintain gasket seal.
Disadvantage, only one I cant hink of is restirtced water jacket area, meaning less efficient cooling caused by reduced flow of water past block and more crucially, heads.
Many cars have shown to be perfectly ok at way over 400bhp on an open deck block, including harvey's which made well over 500 on the rolling road.
Those seeking to build a srong engine with uprated internals would normally start with a closed deck block.
All of the top power engines will be closed deck, such as those belonging to me, andy forest, christian, trout, david wallis etc.
There is also a semi closed which is the same theory but has less extra metal.
as a tip I would avoid engines which have been closed aftr market like the plague.
I have photos of mine cracking at 560lbft due to the stresses welding in chunks can create.
advantage is stronger holding of cylinder walls which prevent walking at very high boost conditions and thus help to maintain gasket seal.
Disadvantage, only one I cant hink of is restirtced water jacket area, meaning less efficient cooling caused by reduced flow of water past block and more crucially, heads.
Many cars have shown to be perfectly ok at way over 400bhp on an open deck block, including harvey's which made well over 500 on the rolling road.
Those seeking to build a srong engine with uprated internals would normally start with a closed deck block.
All of the top power engines will be closed deck, such as those belonging to me, andy forest, christian, trout, david wallis etc.
There is also a semi closed which is the same theory but has less extra metal.
as a tip I would avoid engines which have been closed aftr market like the plague.
I have photos of mine cracking at 560lbft due to the stresses welding in chunks can create.
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Joined: May 2001
Posts: 823
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Originally Posted by Adam M
that looks liek an aftermarket conversion closed deck block, but it is the same principle.
advantage is stronger holding of cylinder walls which prevent walking at very high boost conditions and thus help to maintain gasket seal.
Disadvantage, only one I cant hink of is restirtced water jacket area, meaning less efficient cooling caused by reduced flow of water past block and more crucially, heads.
Many cars have shown to be perfectly ok at way over 400bhp on an open deck block, including harvey's which made well over 500 on the rolling road.
Those seeking to build a srong engine with uprated internals would normally start with a closed deck block.
All of the top power engines will be closed deck, such as those belonging to me, andy forest, christian, trout, david wallis etc.
There is also a semi closed which is the same theory but has less extra metal.
as a tip I would avoid engines which have been closed aftr market like the plague.
I have photos of mine cracking at 560lbft due to the stresses welding in chunks can create.
advantage is stronger holding of cylinder walls which prevent walking at very high boost conditions and thus help to maintain gasket seal.
Disadvantage, only one I cant hink of is restirtced water jacket area, meaning less efficient cooling caused by reduced flow of water past block and more crucially, heads.
Many cars have shown to be perfectly ok at way over 400bhp on an open deck block, including harvey's which made well over 500 on the rolling road.
Those seeking to build a srong engine with uprated internals would normally start with a closed deck block.
All of the top power engines will be closed deck, such as those belonging to me, andy forest, christian, trout, david wallis etc.
There is also a semi closed which is the same theory but has less extra metal.
as a tip I would avoid engines which have been closed aftr market like the plague.
I have photos of mine cracking at 560lbft due to the stresses welding in chunks can create.
you seem a little familiar with excess power --- what would you suggest as a reasonable cost ultra reliable and durable way of enhancing a current STi to a torque of around 350 lb ft - for every day use ?
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