Im thinking of doing a B20z vtec with a GSR head with a 10PSI jackson charger.
But I keep reading about the cyls are too thin and crack easy. What can I do to fix this? Or are people cracking then due to poor tuning? Or would it be smarter to go B18vtec. Thanks for you help?

 

some one must know many of these motors have been built..

 

sleeves are a problem if bad tunning and or like over 350hp.
you should be fine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">sleeves are a problem if bad tunning and or like over 350hp.
you should be fine</TD></TR></TABLE>^^ what he just said.....

-marie

 

What can be done to add stregth to the cyl. walls? without sleves Or would it be smarter to go LS vtec?

 

would ARP head studs help?? more clamping force with the head and the block? keeping everything tighter? thanks

 

well the only things that cause walls to break are pinging and distortion which cause the walls to crack

high compression motors that are not tuned have alot of cylinder pressure and well pinging and detonation have adverse effects of the walls causing them to crack

boosting same applies with the cylinder having alot of cylinder pressure amd the top of the cylinder sleeves are open making it the weakest part. factory boosted engine have closed deck engines do this for added strength so people add those block guards. ( I personally would rather sleeve )

 

What sleeves are the best value for the money? whats it going to cost to have them installed? If a sleeve cracks will there be any problems with the motor, besides the crack? Im asking if I wait till it cracks will the motor be Ok for sleeves and pistions!!! Thanks for all your help

 

If you were gonna build a b20 for boost you could prolly get away with just installing a block gaurd, good girdle, and some arp headstuds. Rods would be a real good idea also. Sleeving the block is expensive, and if ur not going more than 10psi u could get away with whats listed.

 

But if the block cracks. I want to know If I do have the opion to sleeve the block or it is trash once it cracks thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SCsol &raquo;</TD></TR><TR><TD CLASS="quote">But if the block cracks. I want to know If I do have the opion to sleeve the block or it is trash once it cracks thanks </TD></TR></TABLE>

dont wait until it does! you will have more down time get a hold of RS sleeves pm the user here. dont know the price of hand. but trust me if it crack you will then inturn maybe hyrdro lock the motor and throw a rod out the block and then the block is then inturn trashed! I am trying to help you take note of what I am telling you trust me I have seen this asked a 1000 times and half do it and half dont it's up to you man good luck

 

If they walls crack, you could always resleeve it but better done right the 1st time. Thats what happend to my brothers car.

 

i ran b20vtec with gsr head 11.5 cr and had no problems if u really worried get an ls block sleeve and bore it 85mm than ull be safe for plenty of boost