V8EATR

so I spoke with some more of my honda friends last night and gathered some info. They say on a STOCK b18 GSR, your average turbo @10psi is good for 320 or so. Interwebz seem to indicate 280-340, in that range. So a b16 would be even less. Again I'm not concerned with a stock full weight b series anything with 10psi.

You can claim different all you want. Truth is if I can find one and race it, I will and I will get it on video and I will post it up.

V8EATR

He let out for traffic, just like I did. Race ended about that same spot as the first one, maybe a couple mph less. I won, but just barely. As you can see, he let out BEHIND me, making it a victory for myself.

adamantium

iTrader: (3)

Coming back hard and let out, def needs a driver mod.


Most turbo Vtec motors make similar power (do to head flow and compression), when your on boost displacement doesn't matter. Its all about turbo size and psi. The motors that have trouble breaking the 3's on boost are the LS (b18b or b18a) and the B20s because of lower compression and worse headflow. My buddy had a gt30r dual ball bearing at 10psi.

LightningTeg

My stock LS made about the same amount of power at 10-11psi with a GT25/28r. Very fun, autox friendly. I miss it

adamantium

iTrader: (3)

lol psssh look what you have now though! Honestly love the simplicity of a stock turbo b-series and the power they make, my buddy made low threes through a turd ebay cast log manifold.

V8EATR

displacement does matter, Ill give it to ya probably not that much with .2 liters and most everything else being equal.

adamantium

iTrader: (3)

No it doesn't. All displacement does is change the way the turbo will spool. But power on a turbo motor is all based off of the turbo. Perfect example why do you think people turbo 4.8s and 5.3 LSx make 600 instead of turbo an LS1? Cheaper and literally on boost all displacement does is spool your turbo faster. What makes the power on a turbo motor is the turbo. Compression and headflow dictates how much boost you need to run through it to achieve the power though and guess what b16s and gsr heads flow VERY close to each other and make similar compression. Man ive been around ALOT of turbo hondas and if displacement mattered these things would NOT make the power they make on the PSI they make.

why87

So if displacement doesn't matter, then why do big v8s with turbos have better powerbands than little 4 bangers?

adamantium

iTrader: (3)

That is not what we are arguing. But i already covered that...Read. A V8 will ALWAYS have a broader power band than any smaller motors, its common sense.

2SSARME

Why does an X900 AMS Evo running twin 6265 at 35-40psi make 780awhp, yet a TT V8 with same turbo at 10psi will make 700rwhp?

marc97taws6

iTrader: (6)

why87

Right....and guess the reason....displacement!! Sure, anything with the right amount of boost can make 1000 peak hp, but a smaller motor won't make it where it matters like a bigger motor will (Less TQ also). Displacement does make a difference.

adamantium

iTrader: (3)

Read that wrong. AMS's evo is not twin turbo by the way. Also comparing dyno numbers of an AWD car to a rwd is idiotic. 2ssderp has done it again.


We are not talking powerband here, like i said go back and read please.

But since i apparently need to dumb it down for you here.


Okay a turbo motor makes power when the turbo spools correct? Which motor on lets say for example on a 70mm journal bearing turbo will spool the turbo faster, an LS1 (5.7l) or a b16 (1.6l)? Ding ding ding the LS1, the power will come in faster (broader powerband) But lets put the correct size turbo that is dual ball bearing on a b16 that will spool VERY early, Now what do you have? A broad powerband aswell? See what im getting at? A turbo motor rely's solely on the turbo, like i previously stated. For example look at srt4s on stock turbo srt4s they will make 100+wtrq more than they will HP. They are only 2.4l Why? because they have a tiny turbo that spools fast.


On a turbo motor its all about the turbo and turbo setup, not the displacement.

Edit: This isn't the 90s we have technology to help with spool rate.

V8EATR

Your dumb.

marc97taws6

iTrader: (6)

No, you're dumb.

LightningTeg

Still stock LS head (with cams but still lol).

But cars with powerbands that can turn are more fun. Hence the next car being a Vette or NSX If I can find one at a reasonable price.

ohioborn80

iTrader: (2)

**** Honda's.

V8EATR

You're a grammar ****.

2SSARME

at 10psi hondas would smoke you bro.

ej1overspool

Most powerful hondas right now are 1.8 or 2.0...not smart to make big numbers with bigger pistons or more travel on a 4 banger. More displacement = more torque, becausr you can compress more air. There's a lot that goes into it though. The heads flow plays a huge roll, along with minimizing overlap periods...etc etc.