I always thought the reason sleeves cracked, sunk, ect was because of cylinder pressure correct?

If thats the case, whats the difference between running a high cr piston and lower boost vs low cr pistons with tons of boost?

Im just concerned that my stock sleeves and my block guard (all properly installed and machined) really just isnt going to cut it. I dont know how much boost is too much at 9:1. I want this thing to last.

 

maybe not?

 

Anyone will tell you tuning is the key and besides stock sleeves have easily held 400+hp from numerous people on h-t

 

oem sleeves generally crack from excess cylinder pressures. this is usually the case in high Hp motors. but in some cases lots of detonation is occuring causing lots of cyinder pressure but at the wrong point in the stroke which will push extremely hard outward against the cylinder walls along with the piston/rod assembly and not produce a lot of HP(pistons and rods dont like to be pushed down while theyre still going up )
blockguards help reduced cylinder wobble at high rpms and boost levels which can help support the sleeve but they can also cause the cylinders to warp from uneven clearances around the circumference of the sleeves which is obviously not good and can cause various problems.

compression doesnt really play a huge role other than higher compression will cause higher cylinder pressures at the same boost levels compared to low compression

aftermarket sleeves sink or leak when theyre improperly installed

hope that helps

 

yeah that was a great post
I understand that tuning is the key, but its only the key for SO LONG. Tuning isnt the key when you want to run 30psi on stock sleeves.

EDIT: and no I dont want to run 30psi on stock sleeves, I was thinking 15psi daily driven

 

I use to run 1bar of boost no problem with stock sleeves and even head bolts

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jDMJeRk &raquo;</TD></TR><TR><TD CLASS="quote">yeah that was a great post
I understand that tuning is the key, but its only the key for SO LONG. Tuning isnt the key when you want to run 30psi on stock sleeves.

EDIT: and no I dont want to run 30psi on stock sleeves, I was thinking 15psi daily driven</TD></TR></TABLE>

If you're serious enough to run 30psi, then you should be serious to invest some $$$ into sleeves. Nuff said.

But to answer your question: Detonation supression and a conservative ignition timing tune should keep your sleeves intact for quite some time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99B16Si &raquo;</TD></TR><TR><TD CLASS="quote">oem sleeves generally crack from excess cylinder pressures. this is usually the case in high Hp motors. but in some cases lots of detonation is occuring causing lots of cyinder pressure but at the wrong point in the stroke which will push extremely hard outward against the cylinder walls along with the piston/rod assembly and not produce a lot of HP(pistons and rods dont like to be pushed down while theyre still going up )
blockguards help reduced cylinder wobble at high rpms and boost levels which can help support the sleeve but they can also cause the cylinders to warp from uneven clearances around the circumference of the sleeves which is obviously not good and can cause various problems.

compression doesnt really play a huge role other than higher compression will cause higher cylinder pressures at the same boost levels compared to low compression

aftermarket sleeves sink or leak when theyre improperly installed

hope that helps</TD></TR></TABLE>nice explanation

 

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

If you're serious enough to run 30psi, then you should be serious to invest some $$$ into sleeves. Nuff said.

But to answer your question: Detonation supression and a conservative ignition timing tune should keep your sleeves intact for quite some time. </TD></TR></TABLE>


psi is a very small part of the equation. HP is what cracks sleeves not PSI.

 

Here is a good thread about stock honda sleeves... http://www.evans-tuning.com/viewtopic.php?t=133