Checked my compression the other day and it didn't look good so I've deceided to build a bottom end. I was thinking about a B20 but my question is do I do every thing that you would do if it were a ls/vtec. Thanks

 

please dont do b20 vtec, b20 blocks are super shitty, if anything do lsvtec

 

b20 blocks are fine as long as you know ther limitations.good tunning and proper compression and it will be just fine.

 

Dont rev a B20 block to high because it is basically a bored out B18 block so the cylinder walls are thinner and combined with the low R/S ratio your asking to shoot a piston through it if you rev to high.

Im going to be revving my LS/VTEC to 8000 RPM on a 82mm bore which should be pretty safe.

 

unless you sleeve the b20 i wouldnt do it, they have super weak cylender walls

 

my buddy is revving his lsvtec on stock bore all the way to 9+, and the whole setup cost him like 2 g's and is running 13.5

 

do a little research, if its a mild build b20, you will be fine. Resleeving would be a good idea though.