I am planning on either putting an h22 in my accord then when i have more money getting it built and putting on a turbo kit.OR-building up the f23 to handle some boost(up to 15psi)and then putting on a turbo kit. My question is about closed deck blocks-what exactly does this mean? I am guessing that "closed deck" is referring to the coolant passages around the cylinders on some honda blocks. I heard the h22 is more prone to problems if the boost is turned up high. Is the h22 closed or open deck? Is the f23 closed or open? Which is more prone to failing under high boost pressures? Thanks for the help


Modified by one4darkstar at 11:49 AM 3/13/2005

 

what year block?

 

Thanx for your help but what does a header shop website a transmission website and a efi site have to do with a question about closed deck blox?


Modified by one4darkstar at 12:18 PM 3/13/2005

 

92-96 are closed (4gen h22a), 97+ are open

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by one4darkstar &raquo;</TD></TR><TR><TD CLASS="quote"> Is the h22 closed or open deck? Is the f23 closed or open? Which is more prone to failing under high boost pressures? Thanks for the help


Modified by one4darkstar at 11:49 AM 3/13/2005</TD></TR></TABLE>

like i said what year is the block

 

Thank you for your help on the h22 block. Now does anyone know about the f23 block(closed or open?).-And which is best for boost closed deck or open?

 

Sorry h22 civic I missed part of your post

 

f23 is open deck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by one4darkstar &raquo;</TD></TR><TR><TD CLASS="quote">Thanx for your help but what does a header shop website a transmission website and a efi site have to do with a question about closed deck blox?[/i]</TD></TR></TABLE>
ROFL, that's his sig.

 

The H22A is closed deck, the H22A1 is closed deck, and the H22A4 is open deck. Not sure about the Euro block, but they are less common anyway. If you are getting it sleeved, it doesn't really matter whether the block is open or closed deck.

 

My question is about closed deck blocks-what exactly does this mean? I am guessing that "closed deck" is refering to the coolant passages around the cylinders on some honda blocks? Is this correct? SO
Closed deck=no coolant passages and Open deck=coolant passages

 

closed deck


open deck

 

so the h22 in my 1997 prelude is a open deck...i

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beaussol &raquo;</TD></TR><TR><TD CLASS="quote">so the h22 in my 1997 prelude is a open deck...i</TD></TR></TABLE>

yes

 

Supposedly I heard open decks were better for boost due to the fact that there are more coolant passages. Don't know if it holds any validity.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pikachu &raquo;</TD></TR><TR><TD CLASS="quote">Supposedly I heard open decks were better for boost due to the fact that there are more coolant passages. Don't know if it holds any validity.</TD></TR></TABLE>

I don't know about that. Most factory turbo engines are closed deck that I can think of.

 

Ahh a turboedit user. Xenocron is a close friend of mine. Is there any validity to my open deck coolant question?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sporkcrx &raquo;</TD></TR><TR><TD CLASS="quote">I don't know about that. Most factory turbo engines are closed deck that I can think of.</TD></TR></TABLE>

correct

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrettyLude &raquo;</TD></TR><TR><TD CLASS="quote">

correct</TD></TR></TABLE>

Most, but not all

Here's a pic of my brothers volvo S70 block, open deck...

 

here is a closed decked block with open decked sleeves it was custom made but it can be done



bomb proof


Modified by h22 civic at 10:05 PM 3/17/2005

 

So are there any more positives/negatives to open/closed decks?

Is the lack of coolant passages a real negative, or is there still sufficient cooling, it just doesnt look so obvious due to the closed deck?