better to turbo b18b or b18c1???

[got M]

just wondering what is better to start w/?
i heard the b18b w/ its lower compresion is a good choice.
how does a turbo affect the vtec?
how much boost can you run and what kind of whp can you get?

Thanks for any input

[92 Teg-B18A]

legendboy will be able to tell you how the B18B responds to FI
I would think that VTEC would help a good bit, buty I don't know alot about FI:dunno:

[Weapon_R]

b18b because of lower compression, but you can do either without much problems.

[Ekliptix]

B18A or B, because it's a lot cheaper, and you get more torque.

[legendboy]

My b18b is far from reaching its potential but In all honesty I would rather boost a gsr engine than an ls. I would slap a low c/r head gasket in the b18c and boost it. Turbo+Vtec=:D I wasn't sure a while ago so I did alot of reasearch and turbo seems to like the big breathing vtec cams. But people are getting insane #'s out of there LS-t's, the ls block can take alot of abuse and make good power completly stock. Seems as if its all about tuning anyways...

[Pole Position]

It is all about tuning. If the tuning is not good, doesn't matter what engine you go with.

Just think of how much more air and fuel are going into the cylinders.

If this was me, I would go for the B18B. Just because it is lower compression and a little more displacement.

[Mystik J]

i heard of guys disconnecting the vtec when they goto a forced induction application, is this possible first off? and if so what's the pro's of it?

[lsvetc]

well taking off the vtec makes it easier to tune, and yes it is possible. Vtec gives funny dips in the dyno charts and you lose hp. But thats where tuning comes in, with good tuning, you can get rid of the hp dips. However, this is where vtec is over rated. If you tune it good, vtec helps but only marginally. In my friend, Tien's S2k, he dynoed his car and when vtec kicked in, it was honestly like a little bump in the chart! It did almost dink all! So I would have to say B18b, just because of the high torque, higher displacement, and lower compression. Lower compression means more psi's!!! :bigpimp:

[Ekliptix]

quote:

My B18a non vtec made 233whp at 219ft of torque. I am very pleased with the numbers.It was dyno day at Agostino's today. Two pulls for 40 bucks. Both pulls were done at 13psi. I know the numbers look low for my setup but thats not what pleases me. What pleases me is that it did it at 5600rpm. I ran out of injector at 5600rpm. I need 720cc injectors. The graph was going straight up until it hit 5600rpm. I will scan in the dyno sheet on Monday when I get to work. My mods are:

B18A block bored 20 over
> Eagle rods
> SRP forged pistons
> TypeR oil pump
> STR blockguard
> ARP head studs
> B18A head ported by JG
> JG 1001 cams
> AEM cam gears
> Skunk2 intake manifold
> 65mm throttlebody
> 450cc injectors
> 3 bar map sensor
> B18A LS tranny
> Stock flywheel lightened
> from 18 pounds to 13
> Clutch Masters Stage3
> clutch and pressure plate
> Aluminum crank pulley
> Walbro 255 intank pump
> B&M adjustable fuel
> pressure regulator
> JG turbo manifold
> Richard Lee wastegate
> (supports 800hp, took that off my Buick too)
> T3T40E A/R- 60 M-10
turbo
> (Stock Buick Grand National turbo modified)
> 2 1/4 intercooler piping
> Buick Grand National
> Intercooler modified for front mount
> HKS Super Seq Blowoff
> Taylor 8 mm wires
> After market fuel filter
> to replace the stock junk.

http://www.imagestation.com/picture/sraid33/pe9ffc3a59afdc94e561cf909e86fc988/fd3e3d5a.jpg

[B18C]

B18C1.

It's always better to start out with a better engine. And 30 hp is still quite a bit to make up even for a turbo.

People don't generally disengage vtec until they are running ridiculous amounts of power. When you get there what motor you have is really a mute point because you are going to have to swap the internals anyways.

[Ekliptix]

more info:

http://www.g2ic.com/forums/showthread.php?s=&threadid=24364&highlight=dyno

http://www.g2ic.com/forums/showthread.php?s=&threadid=14183&highlight=dyno

[buh_buh]

I'd have to go with a GSR.
Like B18C said, its always better to start with a better motor. And I have heard of people disengaging their VTEC, but its not until they are making a LOT of hp, and the reason for that is when they are making that amount of power, VTEC just doesn't do anything.
But if you already have a B18a, I'd stick with that. But if I had a choice to build a platform on, I'd definately build on a B18c.

[B18C]

Originally posted by buh_buh
I'd have to go with a GSR.
Like B18C said, its always better to start with a better motor. And I have heard of people disengaging their VTEC, but its not until they are making a LOT of hp, and the reason for that is when they are making that amount of power, VTEC just doesn't do anything.
But if you already have a B18a, I'd stick with that. But if I had a choice to build a platform on, I'd definately build on a B18c.

:werd:

[2000impreza]

i thought people disable v-tec because when your running high boost the valves get over lap. like the exhaust valve won't close all the way before the intake valve opens up. don't know. i could be worng.

[got M]

wow what a plethra of info:nut:
what internal engine mods are "recomended" at say 12psi?

[B17a]

Ekliptix, you ever come across any B17 turbo setups?

[buh_buh]

Originally posted by got M
wow what a plethra of info:nut:
what internal engine mods are "recomended" at say 12psi?
it depends on what size turbo you plan on running. Because 12psi wouldn't be the same on a T3 as it would on like a t04. But either way I think you would probably need to upgrade pistons, rods, a thicker head gasket, and valve springs.


Originally posted by B17a
Ekliptix, you ever come across any B17 turbo setups?
I thought I saw one at the V8less show.

[Ekliptix]

Originally posted by B17a
Ekliptix, you ever come across any B17 turbo setups?

yes, I'll find some.

The Vortec SC kit w/ intercooler is availble for your car too.

[Ekliptix]

http://www.g2ic.com/forums/showthread.php?s=&threadid=16023&highlight=vortech

http://www.g2ic.com/forums/showthread.php?s=&threadid=34189&highlight=gsr

A B17 setup:
golden eagle sleeves
JE racing pistons 8.8 compression
crower rods
fully balaced bottom end
stainless steal valves
bronze valve guides
skunk2 springs and TI retainers
all new OEM parts
drag 2 kit
RC 440cc injectors
walbro 255 pump
hondata stage 4B
AEM fuel pressure regulator
tanabe racing medallion with no cat
open turbo
15psi.
= 280whp 205 tq

Really good B17 discussion:
http://www.g2ic.com/forums/showthread.php?s=&threadid=26311&highlight=gsr

[ls/vtec-crx]

Originally posted by 2000impreza
i thought people disable v-tec because when your running high boost the valves get over lap. like the exhaust valve won't close all the way before the intake valve opens up. don't know. i could be worng.

when your running 250 HP + and rev to like 9000-12000 rpm thats when you get VALVE FLOAT so it wouldn;t matter if you disconected the vtec or not

[B17a]

Originally posted by Ekliptix
http://www.g2ic.com/forums/showthread.php?s=&threadid=16023&highlight=vortech

http://www.g2ic.com/forums/showthread.php?s=&threadid=34189&highlight=gsr

Really good B17 discussion:
http://www.g2ic.com/forums/showthread.php?s=&threadid=26311&highlight=gsr

Thanks man! That's a hot looking S/C setup. Hmmmm.....