alex37211 Posted February 13, 2008 Share Posted February 13, 2008 Is it the stroke length that's different? If you can get an LS to 2.0 L WITH sleeves, what's the point of using a b20 block if you've just got to re-sleeve it off the bat for reliability under pressure? I'm thinking of a turbo application. Maybe LS block, maybe b20 block. I just don't know which one would be better under which circumstances, considering both of them would be sleeved @ 84mm. Link to comment Share on other sites More sharing options...
cranny Posted February 13, 2008 Share Posted February 13, 2008 same stroke , different bore(81 vs 84). if your sleeving it , it doesnt matter which block you use cause they are the same other than the sleeves. Link to comment Share on other sites More sharing options...
Hatch92 Posted February 13, 2008 Share Posted February 13, 2008 the b20 is just a bored out b18 Link to comment Share on other sites More sharing options...
alex37211 Posted February 13, 2008 Author Share Posted February 13, 2008 So if I wanted to put some decent sleeves in a b20 block wouldn't I have to have it bored anyways? Or are the ones in it removable and replaceable? Link to comment Share on other sites More sharing options...
cranny Posted February 13, 2008 Share Posted February 13, 2008 no they would have to bore out the old sleeves , and press in new ones. Link to comment Share on other sites More sharing options...
alex37211 Posted February 13, 2008 Author Share Posted February 13, 2008 Then why do people bother with the crv blocks at all? Aren't the LS blocks generally a little cheaper? Or is it just the people want to try to run the b20 block without upgraded sleeves? In other words, is there any sense in using a b20 block instead of a b18 block if it's got to be bored and sleeved regardless? Link to comment Share on other sites More sharing options...
CleanGSR Posted February 13, 2008 Share Posted February 13, 2008 For a decent n/a setup, I've seen a lot of people running stock B20 blocks on their CR-VTEC setups......most around 220-240whp. I think the B20 sleeves just can't handle very much boost without cracking the sleeves. So, if you're going to do boost, do a LS-VTEC, for a nice n/a setup, I'd say a B20-VTEC would be better. Link to comment Share on other sites More sharing options...
Hatch92 Posted February 13, 2008 Share Posted February 13, 2008 ^ i agree with hung. a b20 block would be a for more of an N/A setup and a b18 block would be better for a boosted setup Link to comment Share on other sites More sharing options...
cranny Posted February 13, 2008 Share Posted February 13, 2008 i know thats the general concenses hung , but if you measure the thickness of an H22 sleeve and a B20 sleeve(for example) , the B20 sleeve is thicker , so. i think the ol B20 no good for boost myth , is just that , a myth. block gaurd it for extra insurance. Link to comment Share on other sites More sharing options...
alex37211 Posted February 14, 2008 Author Share Posted February 14, 2008 i know thats the general concenses hung , but if you measure the thickness of an H22 sleeve and a B20 sleeve(for example) , the B20 sleeve is thicker , so. i think the ol B20 no good for boost myth , is just that , a myth. block gaurd it for extra insurance. Wow. That's a real eye opener! Where did you learn of the thickness of the sleeves in the h22 and b20 cranny? Or did you actually measure them yourself? Is there a general rule of thumb as far as how much boost an h22 is safe with? Link to comment Share on other sites More sharing options...
delsol209 Posted February 15, 2008 Share Posted February 15, 2008 I DIDNT KNOW THAT EITHER SO THE H22'S CYLINDER WALLS ARE THINNER THEN THE B20'S??? Link to comment Share on other sites More sharing options...
Kegger Posted February 15, 2008 Share Posted February 15, 2008 Yes they are. Link to comment Share on other sites More sharing options...
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