LS Turbo or B18C GSR All Motor

Been sketchy on the idea of putting any mods into my car before I decide what direction I want to go first since the Turbo set-up and piping is different so i need some help on the pros and cons of LS Turbo or B18C GSR All Motor before I do anything. With turbo I’d be lookin for around low 12’s and all motor gsr would be looking for more of a high 12 or low 13’s; not 9’s and 400 horses so some help please lol (this will be for next year), but I just needs some suggestions and help on what’s good and bad. Thanks in advanced

well…seing that you already have an LS motor, why not turbo it instead of dishing out another $3000 or however much on the GSR motor?? and even if you get that gsr motor your still looking to spend quite a bit more money just to get into the 12 sec range. with all that money saved using your LS motor you can get yourself a nice turbo setup, and built internals…which would probably get you inside the low 12’s easier than a N/A hitting high 12’s. my opinion is go turbo and if tune it right.

Money and knowledge are two factors to consider. If you go all motor and you have little DIY knowledge it is going to cost you big time. Even DIY, the parts are expensive. To do a good job you need all the right tools because all the little things matter when trying to make power in an all motor setup.

Turbo is brute force. You need a strong engine but boost overcomes some of the little things.

Just my opinion. I haven’t built a turbo setup but have built an all motor thing.

i’ve built several turbo setups (honda and non) and a couple all motor

i by far would tell you to turbo, it will be cheaper on your wallet even if you shell out for internals after what you would have paid for the GSR and what you need to hit your goals

lower your compression a bit with some aftermarket forged pistons, get some eagles, head studs, etc, the normal stuff

and you’ll have a motor that can handle 350+ if needed that can still be a nice DD with the flip of a switch

im partial to turbos though

Is this a daily driver? How much do you want to spend?

go All-Motor… turbo is cheaper, but easier to fuck up
rip out your LS crank, put it in the GSR bottom end with LS forged rods and GSR pistons
LS torque with VTEC horsepower, especially if you put a CTR intake cam on that head,
try to source an SIR head too.(better flow)

[QUOTE=vtecsyndrome;1729437]go All-Motor… turbo is cheaper, but easier to fuck up
rip out your LS crank, put it in the GSR bottom end with LS forged rods and GSR pistons
LS torque with VTEC horsepower, especially if you put a CTR intake cam on that head,
try to source an SIR head too.(better flow)[/QUOTE]

for his goals, n/a he is going to want a high CR and that can spell death on a bad tune just as a turbo setup can. the diffrence is a slightly lowered CR turbo setup can handle more abuse while tuneing and driveing and still keep kicking

no matter what you build, take the time, and money, to get it tuned properly or it wont last long

putting a GSR crank in his LS would get rid of his LS torque…the torque in the LS is had by a longer stroke crank. keeping the LS crank and block, getting H-beam rods with GSR pistons and sir head is called an ls-vtec. why not go this route instead of getting a GSR? you will build your ls-vtec all motor with many new parts…get your block bored out .5mm, .5 oversized pistons with higher CR. H-beam rods, sir head with ITR valvetrain and ITR IM. build it right or don’t build it at all, otherwise your wallet will suffer the consequence, and your motor as well.

Sorry was on vacation, but thanks for the help guys. Well problem with ls-vtec is that i don’t want to get state reffed n have to pull the whole motor out. First thing in mind would be to go ls-vtec for me because if the little money you need for the power you recieve, but i want somethin street legal because its a waste of time to swap motors in n out. I believe ls-vtec is a better choice, but im not sure if it’s reliable and how the whole head and ecu thing works so maybe some help? :bowthank: Do I need a 95 or under head for OBD1…? Lookin to spend maybe around… 2000 or less at the momment

The advice that everyone is giving you is really good. If I were you I would find out what it takes to make a B18C smog legal where you live. If that concerns you then you should definetely do your research. Its not illegal to ask your local smog man questions. Also, whatever you do decide to do, you will be spending money! I have a 95’ OBD 1 B18C1 currently in my 93’ LS. The swap was a dream and not terribly hard. The only problem I currently have is smogging it. Here in Bakersfield, its a pain in the ass to find someone who will smog it. Everybody seems to refer me to a Carb Ref all the time, so I just cheat the system.

somethin to add on but… would a vtec set-up be better on gas mileage and daily drivin or an ls turbo

Rice, I’ve been researching info related to this topic for the past 3 months.
I’ve decided on turboing a JDM B18C.
I have around 2.5 grand to work with, however… I already have a YS1 short geared Gear Box, Intake Manifold, Cams, Cam Gears, so all I need is a long block (around $1,400)
www.extremejdm.com/honda_engine1.htm (150.00 to ship)
As long as I don’t have to open up the motor… I can do all the fitting and bolting up of the turbo kit myself to save on labor.
My goals is around 250-275whp that can rev to 8200rpm daily and reliably with decent gas mileage.