anyone know how much a NA b20 will handle
01-03-2005, 10:08 PM
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anyone know how much a NA b20 will handle
Right now I have a B18B LS motor for my project engine. Im going to to some sort of frank engine. Im going all motor no nitrous or turbo and am looking for low 200hp high 100s. Will the cylinder walls take before they crack. I read that honda had a recall for crvs because of the cylinders walls being so thin. I also read a thread on here that you dont have to resleeve for a NA B20 motor. Anyone with some experience please help me out here.
01-04-2005, 11:52 AM
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depends on how high you want to rev, really...
if you want to rev higher than stock redline, at the very least you should get a block guard and a crank/main girdle.
if you want to rev higher than stock redline, at the very least you should get a block guard and a crank/main girdle.
01-04-2005, 01:01 PM
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been there done that
just to give you an idea, omniman on h-t is making over 240whp on 91 octane in is daily driver, on a stock bottom end.
http://www.honda-tech.com/zerothread?id=1090716&page=1
his dyno sheet is on the second page
http://www.honda-tech.com/zerothread?id=1090716&page=1
his dyno sheet is on the second page
01-04-2005, 09:08 PM
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Im going to put oil squirters, get it fully balanced, get a crank girdle, arp bolts, forged pistons and rods, and I wasent sure about the block guard. BTW is it a LS bottom end or a b20 bottom end.
01-05-2005, 12:15 PM
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The stock sleeves aren't that bad, but they do crack from detonation.. not from high compression or turbos or anything else.. from detonation.
Having a turbo or high compression increases the risk of detonation, which is the reason people don't trust b20 sleeves.
The block itself is good, although it doesn't have as good of webbing on the outside for structural support as say a b16a. With the setup you mentioned, and perfect tuning your engine would last as long as you need it to, and the 200whp would be easily attained with the right head combination
Having a turbo or high compression increases the risk of detonation, which is the reason people don't trust b20 sleeves.
The block itself is good, although it doesn't have as good of webbing on the outside for structural support as say a b16a. With the setup you mentioned, and perfect tuning your engine would last as long as you need it to, and the 200whp would be easily attained with the right head combination
01-15-2005, 06:37 AM
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Originally Posted by j87w
Im going to put oil squirters, get it fully balanced, get a crank girdle, arp bolts, forged pistons and rods, and I wasent sure about the block guard. BTW is it a LS bottom end or a b20 bottom end.
i highly recommend staying away from the blockguard. it will cause your cylinders to become out of round, and doesnt allow for sufficient cooling at the top of the cylinders at the ring pack which "could" lead to dotonation.
