B20vtec:

stock b20 sleeves and bottom end 84.5mm
endyn rods/pistons = 11.5 compression
gsr crank = 1.58 r/s ratio
8500 rpm redline

itr head w/ stage II cams




Modified by SilverCIVIC96 at 6:23 PM 9/29/2003

 

stock b20 bottom end?
endyn rods & pistons = aftermarket bottom end

what cams?
dynamic compression is what cracks the sleeves.

 

actually I thought it was detonation that killed sleeves in the B20- tune it right and you'll be ok. I've taken my CRVT to 9k on a stock bottom, no issues to speak of! and she's just going to get better from there...


Modified by advanracing62 at 8:02 AM 9/29/2003

 

its possible, but why risk it? do it once, and do it right. Sleeve it!

unless of course you have n problem with destroying and re-building.

nick

 

update: added info about cams

2 reasons why Im not sleeving:

1) money is an issue

2) too many stories about sunken sleeves...

keep it coming guys...

 

you don't really need to worry about sleeving the motor as you won't really ever need to rev high.. Boosting on the CRV block is bad, but NA is OK... (good saying to remember) I would suggest you look at some of the setups that are around and see what they are doing. I can tell you the my stock bottom end has been subjected to hell, and has NO issues!!!! One onther thing to note is that with the ITR head, your compression won't be super high... maybe even less than you expect it to be.

 

make sure you don't detonate.

 

everything ive seen 12.0:1+ will crack sleeves quick. i think they will crack, but itll take some time

 

ive done some research on the b20 vtec and what ive found about the sleeving issue is that u shouldnt put anything higher than 11.5 compression ratio pistons in there so u should be good to go. just search around to see what other people have done and how theirs worked out.

 

B18 crank or B17 crank? B17 right?
-PHiZ