I'm looking to start a new project but must figure out what will be the heart and soul of it. I realize each has its advantages and disadvantages... which would you go for?

 

im goin ls/vtec.... the easiest and probly the most economy effective one........ at least legit

 

Common misconception.

Ls/VTECs, to do properly, cost just as much, if not more, then a complete VTEC motor from the factory.

If you do it right, LS/VTECs can hold up just as well as a stock motor. The reliability issues come in when people try to save money and don't do things the right way.

Also, consider the fact that NOTHING will run as well as stock motor straight from the Honda Factory. Once you crack that thing open, you'll be facing reliability issues.

 

I have seen rebuilt motors dyno more than thier stock counterpart. I would choose the b20 because the old sayin "bigger is better" and because you want torque in a honda

 

i have a jspec GSR with just bolt ons and i'm more than happy. I just wish i had a hatch.

 

I have seen so many times about "building a LSvtec" rite... but haven't seen much about what's the exact right thing we are talkin about, can someone list this?

 

well than if bigger is always better go get a v8

i second that if ur going to do ls/vtec its gotta be done right it can cost alotta money

b20 got some weak sleeves but other than that its a nice motor

 

B18B if you want to build the engine later on down the road. B20 if you don't ever plan to build the engine... Unless you just have money to burn.

 

They all cost he same to do (CRVtec/LSVtec when done right).

Reliability of a built B20/B18 block with a vtec head WILL NOT BEAT FACTORY HONDA RELIABILITY.

 

as i love the ls/vtec i love the reliability of hte b18c, granted you dont mod it heavily. my opinion and my choice is the b18c.. it is what i'm doing

 

go paul

 

crvtec

 

Chusai,

Here is a very helpful link on the LS/VTEC:

http://www.c-speedracing.com/howto/lsvtec/lsvtec.html

It shows the parts you will need as well as step-by-step instructions with pictures. I hope that helps.

 

I`d do a sleeved n bored gsr block.

Ryan

 

B20 sleeves are WEAK!!!!
If I had the money I would sleeve a gsr block to 84.5 mm to match the pistons I allready have.

as a side note to what kind of numbers a b20vtec can put down, I dynoed mine with all 4 cyl walls cracked, thinking the rings were shot, but I had to tune air fuel.
It put down 186hp and like 144 tq, blowing by like mad, I wish I had done a compression test just to see how bad it was.

 

what usually goes wrong with an ls/vtec?

 

I know of a few people who forgot they had an LS block and over rev'd.

 

I am doing a built LS/Vtec, so that would get my vote, same tq as crvtec, just doesnt start as soon.
My setup will be b18a1 block, eagle rods, je 9.0 pistons, ITR head with upgraded valvetrain.
You just have to remember not to rev past 7500 or so, you could go higher but a full balance and blueprint would be needed.
I plan for b00st so i won't need to rev past 7500.

Tho i would love a B18C5 straight from honda, but for my wants, it won't cut it.

 

Yup. b18b and b20 bottom ends are weaker than their vtec brothers. Expect to rebuild the bottom end "properly" if you want the motor to last. Too many friends over here with blown ls-vtec's...

 

Why isn't anything you do to a car more reliable than the stock set up. Is there a way to make your car more relable than stock but still fast. I know Fast Cheap Reliable pick two but what are the good fast and reliable mods? Sorry to post this here but seems fitting.

 

What???? So your telling me my b18b bottom end is weaker than a GSR bottom end??? Proof, link??

 

Not that I have concrete stats, but from a physics standpoint, the difference between the forces placed on a motor designed to rev to 6700rpm vs. a motor designed to rev to 8000rpm is colossal.

Factor in the way that Honda over-engineers its engines and you have the difference in bottom end strength.

 

cheese.. why do you say that b20 if your not goin to mod it.. the only thing wrong with the b20 is the sleeves.. thats what golden eagle MFG godzilla sleeves are for =P and block guards.. ive seen a 30 psi b20/non vtec and hes havin no problems at all... granted he only runs 30 psi at the track. and 10 on the street..

 

over reving crvtec.....pshhhh!
i've been taking mine past 8k for a while now,
runs as good as the day it was put together

 

true playa......what do u got yur jdm gsr in? whats it run? im checkin out all the advantages/disadvantages between pretty much all the b series, but i cant make up my mind...