b20 vtec build need to do research
 

I have bought a b20 block and a b18c5 head with no cams, springs and needs new valves. I was wondering if anyone can give me some info on the build. Also what cams are good and intakes also. I have a lot of questions about the build

Re: b20 vtec build need to do research
 

have you done any actual research? this is not how to go about it. if you're expecting to be spoon fed this information, this is not the site for you.

Re: b20 vtec build need to do research
 

here you go bud:
http://lmgtfy.com/?q=how+to+properly+build+a+b20+vtec

Re: b20 vtec build need to do research
 

Check out the how to build a reliable b20v/Lsv thread I has a lot of info.

Re: b20 vtec build need to do research
 

Google is ur friend use it

Re: b20 vtec build need to do research
 

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/how-build-%22reliable%22-lsvtec-b20vtec-1676914/
this thread help me out a lot on my build I hope it dose the same for you

Thanks for the links it has sent me in the right direction I do have a question still tho will the stock sleeves be a problem

Re: b20 vtec build need to do research
 

Should b fine. Depending how much power u want. U want more power then bore it out. 82mm is the max to bore, more than that then I recommend aftermarket sleeves.

Re: b20 vtec build need to do research
 

Okay well I've googled it and haven't found anything on it but what are your inputs on locking in vtec

Re: b20 vtec build need to do research
 

I think you got your numbers wrong a B20 is 84mm bore STD.

Re: b20 vtec build need to do research
 

Yes a b20 is 84mm but the sleeves are weak depending how much power he wants to push, he won't b pushing much power with thin sleeves. I was just sayin since he hasn't mention how much power he wants out of it, that 82mm with 350-400whp is the limit for dd, better b a damn good ass tuner to hold up those sleeves. B20 sleeves are thin and like the max I would go on them are 300-350whp depending on a good ass tune. But I don't know how much power a b20 sleeves can hold. Just my opinion for a dd

Re: b20 vtec build need to do research
 

You obviously don't know who Uncle Dave is^

Your replies give me headaches :ugh:

Re: b20 vtec build need to do research
 

Ok let me get this straight you want him to put 82mm pistons in a 84mm bore correct ? and how is a N/A b20 going to make 350 to 400whp?

Re: b20 vtec build need to do research
 

Ok yeah first off B20 has a 84mm bore so to have a 82mm bore you would need either a B18 or have B18 sleeves put in the B20 block. Second you are most likely not going to push a B20 past 300whp on all motor at least not without a lot of money. The stock sleeves are known to be weak but they hold up just fine at 84mm on all motor. I have seen plenty of 250-260whp B20 Vtec on stock sleeves. So I would not be very worried about the sleeves for all motor. A good tune is a must but you dont need the best tuner in the world to be able to keep B20 from cracking. I have seen B20 sleeves crack at about 300whp on turbo, it was a stock B20B running 18 psi on a T3T4 57 trim turbo on 91 pump gas, it made 2 passed and put a piston threw the block half way down the third run This same motor was fine for a long while at 12 psi. I will say this though the motor was so trashed that there really was no telling what failed first the sleeves,rod, rod bolts or the piston. BTW it was tune by Bubba at Do It Dyno and was tuned for 12 psi low boost and 18 psi high boost and the owner was told it was not a good idea to run that much on a stock motor.

Re: b20 vtec build need to do research
 

No I didn't say that. I was say on a b18 motor 82mm bore would b the max to bore out. I didn't say anything about 82mm pistons in a b20 block.

And if u read my last couple sentence I said I didn't know how much horsepower a stock b20 sleeves holds.

SORRY gUYS I FOrGoT THIS WAS A b20V lOl. I had mind on b18. Sorry again guys.

Re: b20 vtec build need to do research
 

Posted by clean rice :You obviously don't know who Uncle Dave is^

Your replies give me headaches




No I don't I'm still learning the ropes as I go too but I do like to be corrected when I'm wrong. It's not like in trying to give bad info I'm tryin to help to the op with some knowledge I know.
Since u posted here y don't u give the op some knowledge

Re: b20 vtec build need to do research
 

Either you're 12 years old, or you are from a different country. Which is it?

I've given plenty of "advice" over these past 10 years on here...thanks.

Re: b20 vtec build need to do research
 

All good lets gets back on track here the STD B20 sleeves are not weak and with what we have learnt over the years tuning them was the biggest problem now we understand how it needs to be done there is no problem running them @85mm and 14 to 1 comp.

Now Clean Rice is one of technical people on here and you really need to listen to what he says as he has been around for a very long time on here and has a very good knowledge base with Honda's.

Re: b20 vtec build need to do research
 

https://honda-tech.com/forums/all-motor-naturally-aspirated-44/p-r-e-stock-sleeve-b20vtec-dyno-3164743/ 2 year old engine hmm B20 sleeves are just fine when they are built and tuned CORRECTLY

Re: b20 vtec build need to do research
 

I wasn't sayin it in a bad way, some of ur knowledge will help the op. I read some of ur post awhile back and u do good work. I didn't mean it like that if I came out the wrong way

Re: b20 vtec build need to do research
 

Wait for a b20 to be 82mm u need to add gsr sleeves n bore those lols