Hey guys i was looking into sending my spare b20 block over to css.. But i just wanna know if its in all worth it in the end.. The goal would be 450-500 b20z non vtec.. Fully built with a precision turbo setup.. Im getting ready to order the piston and rods now and was looking at a 10.1 compression ratio.. Does anyone else have a css block that is running a boosted application? And if so what hp and how much boost is the block holding.. Thanks in advance

 

Running a CSS block is never a bad thing but, even they will tell you they can not and will not guarantee **** for a B20 block. Lol! You might be able to support 500+, it may split your cylinders at 300, No telling. I have heard (more than one time) about B20s being sent to CSS for service and cylinders busted WHILE they were trying to do their thing.. Go figure. Lol!

 

i agree, for how cheap you can find a b18b motor that’s what I would personally do. Not only will the CSS hold the power, you can easily get a Vtec head when it’s time.

 

I agree with both of these fellas.

 

thanks guys for all of yalls inputs.. And everyone has an lsv setup where im at so i truly dont wanna go that route..i wanna stay all non vtec all the way and wanna stay b20 bc of the more runs ill get staying all b20 non v.. Its deff a toss up in the air as to sending my spare to css and it all just depends on everything. Was just kinda hoping someone would say i have one and no problems for 2 years now on 15Ibs.. But i guess even with a css block thats a rare thing.. Thanks for yalls help and input..

 

When you say "more runs", do you mean you will get more people to race you since you don't have a VTEC head ? Do you think you would get FEWER races if you had a non-VTEC B18B instead of the B20B ? I am a bit confused as to why you insist on staying B20B when everyone above has told you that the B18B block is infinitely better for a boosted application. You can make just as much power with the B18B as you can with the B20B.

 

yes i mean more races and where im from everyone just seems to want to always run the b20 over the ls.. Ive always been an non vtec fan. And i dont have no intention on changing that nor going to the ls block instead of the b20.. And my thread asked for results of a b20 css block not a debate on ls or b20 blocks.. Not to be an *** or anything but everyone's build is unique in there own way and Thats what makes it "your build" u take what personally intrest u and u make it yours make it custom however u wanna call it wether it be eg over ek because the egs are lighter or whatever reason.. Or the b20 over the ls because thats what u chose to build and run with.. Ya know! Like i said not trying to be a dick but we wasnt having an debate on which block is better my thread specifically asked about b20 css blocks.. They other men stated there replys about the ls blocks and how there better which i agree on for boost applications but i dont want to steer away from the b20s because thats what makes my build my build ya know.. So with that being said thanks for your input but we was not having a debate over which block was better.. Read the thread title

 

ok mr......... you come here for advice on doing a high HP build (assuming since you want a CSS). The B20 blocks are extremely fragile and just don’t hold up and are a ticking time bomb. The whole reason we suggested swapping to the LS block was because if your spending money to have a CSS done , why limit yourself to low HP build when the same money on a LS block gives your way more power. So that being said..... buy 5 B20’s and just turn the power up until they blow then rinse and repeat with the next 4...... that’s where your headed from how it’s sounding. I’m the last person on this board to be a dick..... but your cocky response has me headed in that direction.....and I do have experience tuning turbo B20’s. My buddies trapped around 112mph his first time at the track, we are going to pull that motor sooner than later for a better motor

 

that was not inteded to u that was inteded on jrcivic or whatever scroll up and look where i thanked yall then jrcivic commented talking about how i need to listen to yall etc.. So please scroll up and look that was noy intended to u i appreciate u for ur help u just suggested something as to where the other dude was saying i need to listen to yall etc..

 

I have no clue how old you are, but you can look at the date I joined and get a idea of how long myself and some others have been at this. You can take our advise or not, we are trying to save you money in the long run. I don’t claim to be the Honda god around here...... but Im sure not a dumbass either. I love being the odd ball and I respect that aspect of things, but to stay you would rather put salt on a terd and eat it instead of eating the steak laying beside it is crazy IMO

 

and i respect that but imma stay the odd ball and keep these b20s bc thats what i enjoy to build i get to try all kinds of setups along the way etc.. I dont mind the tear down and rebuild process.. Thank yall for yalls help but i was hoping someone who has a css b20 would of commented on my post.. Someone who has experience with one

 

It’s going to be rare to see someone with a B20 CSS because of the high failure, most people won’t spend the money on them. You still should be able to get 400whp with some rods and pistons with that motor

 

OK, so now I am the bad guy...

I don't know why you made this personal, but I am not debating with you. You want to make 400-500 wheel HP on a CSS B20 block... and it simply ain't gonna happen reliably. All I suggested is that you listen to those here (besides me, because what do I know... heheh) because they, and CSS themselves, state that it cannot be done. So if you are waiting for someone to jump on your thread and tell you all is OK with your plan because "they did it", you have placed your faith in the wrong location.

In the end... it's your money. So you just go on and do you... and come back and let us all know how it turned out.

 

To answer the question, no I don't have experience with a CSS B20 block. Most people don't and it would be a rare set up. But, for your goals and plans of staying with the B20 (which is understandable, because the non-VTEC engines can be more simple, yet capable) and it since it's your preference to stay B20, I recommend going with full sleeves for the B20 block, which would cost about $900 more. For long term use, and the fact that when you open the hood of the car to show people the non-VTEC, you can't see inside of the block, whether it's CSS or sleeved.
From what I understand, the CSS is a sophisticated block guard that is machined into place. Do a bunch of searches on block guards, and you will see mixed results. Some success, some failure. They tend to reinforce the stock cylinder walls, but at the same time, trap heat right around the top of the block, thus creating more problems such as detonation of the air/fuel mixture before the ignition/spark, and also blown head gaskets. You should contact the people that install the CSS to see what they think about your horsepower goals.
If I were you, for 450-500 horsepower, just save some extra money and get quality sleeves. You may be able to get the CSS to work, but like the other posts say, it's risky and unreliable.