b18 all motor

[Mr91DA]

Ok so been looking around for info but nobody has anything up about how to build a b18a1 all motor. So if you guys have input let me know im going to build one soon but i want ideas before i do anything. Planning on going with stage 2 cams rebuild the head and put new springs and all the good stuff. Port and polish as well and doing rings as well with possible high comp pistons. Any ideas of anything else?

 

[Integraguy04]

there is a forum that has some good info that i was on for a long time... www.nonvtec.com

If you wanna do an all motor non vtec, its not going to be as powerful as a vtec motor, but you do get points for being original.

The big thing in those motors is the head - and how it flows for shit... here is a parts list:

Stock crank, forget rods (if you want - stock would be fine), 12:1 pistons, crower stage 3 cams, valvetrain/retainers, get a good intake manifold with a plastic IM gasket and have the intake manifold port matched to a 68MM throttle body. Get a good quality exhaust manifold, and i would try and get 2.5" - 2 3/4" exhaust (maybe skunk2 megapower).

And above all - get the thing tuned with hondata or something, that is key! get all the bolt ons and when your done with that then go towards getting engine management and taking the motor apart

 

[Kyle]

there is a forum that has some good info that i was on for a long time... www.nonvtec.com

If you wanna do an all motor non vtec, its not going to be as powerful as a vtec motor, but you do get points for being original.

The big thing in those motors is the head - and how it flows for s***... here is a parts list:

Stock crank, forget rods (if you want - stock would be fine), 12:1 pistons, crower stage 3 cams, valvetrain/retainers, get a good intake manifold with a plastic IM gasket and have the intake manifold port matched to a 68MM throttle body. Get a good quality exhaust manifold, and i would try and get 2.5" - 2 3/4" exhaust (maybe skunk2 megapower).

And above all - get the thing tuned with hondata or something, that is key! get all the bolt ons and when your done with that then go towards getting engine management and taking the motor apart

This basically. PR3 or P30 pistons will bolt right up to LS rods and give you about 10.5:1 or so compression with a stock head and gasket. I believe the PR3s will give you slightly higher. Edelbrock Perfomer X IM is great as well. I averaged my all motor build was gonna cost about $1700-2000 whcih is less than a B18C swap would cost me, so why not?

 

[DaddyBuiltRacing]

My buddy just built a 85mm 14:1 compression stage 3 crower cams LS. It is gonna hit the dyno soon, will report back with numbers once that happens. I am expecting under 200hp out of it as the heads flow for shit, but we shall see

 

[Kyle]

My buddy just built a 85mm 14:1 compression stage 3 crower cams LS. It is gonna hit the dyno soon, will report back with numbers once that happens. I am expecting under 200hp out of it as the heads flow for s***, but we shall see

What mods is he running? King Motorsports built a 203whp B18B stroked to 2.0.

 

[Integraguy04]

What mods is he running? King Motorsports built a 203whp B18B stroked to 2.0.

yes they did, was a very good setup too....not everyone knows but that head had around 2K worth of port work done to it...they got it to flow close to a VTEC head. I bet with an un ported head will prolly be around 180 or so

 

[Samurai_Blue]

imo its not worth it really unless you have the p8r head

 

[DaddyBuiltRacing]

Even with the p8r head its not worth it, Everyone acts like the p8r head is some magical head, actually its terrible for an all motor setup. Aside from having the vtec sized valves it has 84mm combustion chambers which lower your compression. I tried to convince him to either boost the LS or build a GSR but he was set on an all motor LS, it does pull pretty damn good for being non vtec and not fully tuned. Like I said, it might suprise me on the dyno, but I still say under 200whp . Even then numbers aren't really that important unless your talking track times, that will tell you how much power the car is making.

My buddies motor is unported, has CP/Eagles in the bottom, supertech valves, springs, oem retainers, rmf header and skunk2 intake manifold. Also has Denso 550cc injectors tuned on s300 by the same guy that tunes my car.

 

[Mr91DA]

Hey guys got a question im confused. Did the compression test and im running close to 200 lbs on cylinders 1,2,4 but cylinder 3 is doing 150 wth? I was doing a leakdown test but equipment was acting up so couldn't rly tell me anything. My motor is a swap its the 2nd engine in the car bout 130k on it. Cam seals are leaking like a bitch. Timing belt was recently done but looks like morrons did it. Think a valve might be bent? We sorta did the leakdown and we can tell its not from the intake valves not from exhaust valves not the rings nd not the head. We think the equipment is faulty so we will try again soon but have any ideas? Ls compression should be 185 lbs nd 135 is lowest. Any input? And im planning on stage 2 cams with a worked head. Pistons i might just use stock because if i want a reliable all motor i have to get it sleved since it is a higher compression the engine will take the punishment but wont last too long. Thats why i'm trying to stay away from high compression pistons. The only problem with vtec is that you have to rev it a lot. All motor you have torque from low rpms. Vtec gives you high end. Torque gets you laid.

 

[Integraguy04]

Hey guys got a question im confused. Did the compression test and im running close to 200 lbs on cylinders 1,2,4 but cylinder 3 is doing 150 wth? I was doing a leakdown test but equipment was acting up so couldn't rly tell me anything. My motor is a swap its the 2nd engine in the car bout 130k on it. Cam seals are leaking like a b****. Timing belt was recently done but looks like morrons did it. Think a valve might be bent? We sorta did the leakdown and we can tell its not from the intake valves not from exhaust valves not the rings nd not the head. We think the equipment is faulty so we will try again soon but have any ideas? Ls compression should be 185 lbs nd 135 is lowest. Any input? And im planning on stage 2 cams with a worked head. Pistons i might just use stock because if i want a reliable all motor i have to get it sleved since it is a higher compression the engine will take the punishment but wont last too long. Thats why i'm trying to stay away from high compression pistons. The only problem with vtec is that you have to rev it a lot. All motor you have torque from low rpms. Vtec gives you high end. Torque gets you laid.

it isnt so much as how much psi you put out, but that they are consistent plus/minus 15%. It could be a valve(s), could be bad rings, could be something else. A leakdown test will help you figure out where it is coming from.

As far as high compression pistons go - it really wont put a lot more strain on the motor, and honda sleeves can take a lot - far more than what you will be throwing at it so i wouldnt worry.

And vtec motors do make good torque down low - you get torque from displacement mainly, as well as how your motor is setup. You also get torque from how much power you can get out of the motor and a VTEC head is setup a lot better to make power. I disagree with you, but if someone can prove me other wise then im all ears - i had a B18b non vtec that had pistons/rods and stage 1 cams in it, and my B20/VTEC made around 15 ft-lbs more, and my block is stock

 

[hgocasca]

I like the low end torque(ha ha Honda....torque lol) of an ls compared to my b17, but the end results vs money spent, just doesn't seem worth it. I've been back and forth on the ls vs vtec routes so many times. For the same money spent on building your ls, a stock itr motor with bolt ons and a tune will yield more results on the dyno. And will actually be cheaper. I've had the same debate with a few OG members here, and they proved to be correct. A year, four cars and 5 motors later, I'm rocking a b17 and am as happy as could be. Do things how you wanna do them, learn along the way, but most of all, do what you feel will make you happy. We will see you eventually boosted, rockin some vtak, or slowly dwindle out of the Honda scene. It's all a matter of time before one of those three happen. Mad respect for building the ls, keep doing your thing brother!!

 

[hgocasca]

And to touch on what was said about displacement, mainly that is where your torque will come from, but you can free some up with tuning.

 

[Mr91DA]

The problem is i can't go with a b18 or a gsr or type r here. Where i live people tend to have sticky fingers so i have to keep it a ls. If i make it vtec people will be able to tell. With all motor it will make it harder for them to see what i have. Ima have it tested next week again and see where it goes. I like quick response from my engine i rly don't like vtec since you do have to rev it before you get results. We race from 0 so no vtec is in use till high rpms.

 

[Mr91DA]

The problem is i can't go with a b18 or a gsr or type r here. Where i live people tend to have sticky fingers so i have to keep it a ls. If i make it vtec people will be able to tell. With all motor it will make it harder for them to see what i have. Ima have it tested next week again and see where it goes. I like quick response from my engine i rly don't like vtec since you do have to rev it before you get results. We race from 0 so no vtec is in use till high rpms.

 

[hgocasca]

Trust me, same thing here, but those revs come quick, and you stay in them once you get there, nobody will know unless you tell them