Max power for a b18b
 

I have tried using the search button on here, but for some reason I keep getting just a white screen? Anyhow, I was wondering what the max horespower was on a stock b18b turbo? I have heard a lot of conflicting things. I have heard that the b series motors can handle up to 300 whp and be reliable as long as the tuning is good and you don't make the engine do what it wasn't desinged to do (i.e not reving past 6800 on an LS). Then I've also heard the 265-275 was the limit on where you want be while still staying safe. I don't really want to have to rebuild the motor right now, and I'm not wanting insane horsepower right now, so I was going to just do the ls/vtec and a couple of other things to get me to the 300whp and then just leave it alone. Others have told me to just save my money and just rebuild the motor then crank the boost. That is probably the best thing to do, but it's also triple the amount of money as a ls/vtec converison. What do you guys think?

Re: Max power for a b18b
 

ls vtack is :-X

the money you use on that could get you 300hp reliably on an ls......
a stock block good tune will give you 300hp....its even easier if youuse a slightly bigger turbo....lag isnt abad thing

but for 800$ you could do a set of eagle H beam rods, and forged pistons....and you would be set...the stock sleves are fine for 300hp,

Re: Max power for a b18b
 

yeah, I know I could buy those, and I even found a deal with rods, pistons and sleeves for about 1,100.00 or around there, but it's the downtime on the motor and cost of the install that will get me. If I could buy everything I needed and have it installed for 1.5k to 2k, and have it back in a week or two, I would go that route. This is my dd so I can't be out of a car for that long.

Re: Max power for a b18b
 

300 can be had on an LS with very good tuning, and it'll last. But at that level of power, things will wear out fast and could eventually break. You can only have 2 choices out of 3 options...Cheap, reliable, or fast. You really can't have all 3. But if all you want is the 275-280hp range, it can be had pretty reliably. It's all in the tune...it can make or break your build.

Re: Max power for a b18b
 

yeah, your deffinatly right. I'm not really trying to go cheap, but get the most bang for the buck. Does that number hold true for all b series, or just LSs? I would like to be at 300 if need be, but 275 isn't all that bad. The car probably won't see that much power under daily driving anyway, I just like knowing if I want it, it's there.

Re: Max power for a b18b
 

the guy who is tuning my new project dyno'd @ 324hp and drove it as a DD for a year. Stock internals. Adseguy on H-T. He is now using forged internals, dyno'ing 400+

Re: Max power for a b18b
 

^^Yup.

I'm trying to get mine in the ballpark of 260-275whp on a stock LS, but don't know if my turbo will get me there. Am confident in my tuner though. I hope I can finally get it done by this summer. I've been saying that for years, and look where I'm at still. :-[

LOL. It looks and seems to me, that LS motors are really the motor with the best bang for the buck when it comes to turbo Stock motors.

1. Because they are cheap. B16's, B18's are way more expensive. You blow your LS, you can buy another block for like 200-500 bucks. Slap your current head on, and be boosted again in a day or 2.
2. They can handle a good amount of power with a good tune.
3. They create a good amount of torque. While you might get more power with less psi out of a motor with a better flowing head or V-tec whatever, If both motors have the same amount of hp, the LS motor will usually always have more torque.

Re: Max power for a b18b
 

Exactly. LS's will make tire-shredding torque with very little boost, and make the DD scene very fun indeed. I've done both ls's and b16a's with turbos, and by far I'd say I prefer the LS over the b16 for daily driven status. The torque on the highway is a great plus too. Just get a properly sized turbo matched to what you want to run...i.e. the smallest turbo for the goal, and you'll fall in love. A turbo that's too big will leave you like a pornstar...great on the top, but will leave you waiting for the fast ride. ;D

Re: Max power for a b18b
 

I've got a turbonetics t3/t4 right now, and I think I'm happy with it. The only thing that kind of sucks is that I don't hit full boost untill 4k right now. That could be for a couple of different things though like still having a stock exhaust. Gonna try to have that changed in a week or two. Gonna have a 2.5 inch downpipe, (at least I think it's 2.5, it's whatever diameter comes with the turbonetics kit.) leading to a 3 inch exhaust. I'm hoping this will lower my spool time. Also, I think I may have a slight exhaust leak, but I'm not sure. I'm hoping that my tuner can make 250 whp at least off of that at 10 psi. I'm gonn buy a 2 bar map sensor and try to push 12-13 psi in the future.

Re: Max power for a b18b
 

Ahh, I love it Slo_crx.....This is what I wanted to hear, you make me feel so secure about my build now :-* lol O0

Re: Max power for a b18b
 

yeah, I would be very happy at 324 reliably.

Re: Max power for a b18b
 

Sweet! Just remember to run your car by a different dyno when you pick it up from him, to make sure he isn't selling you a pretty piece of paper.

Re: Max power for a b18b
 

*LOL* good point a never really thought of someone doing that, But I also felt that I had no business owning a turbo honda and not knowing how to tune myself. Thus the last year I spent researching until the wee hours of the morning learning how to tune myself. And the only problem with that is I find I lie to myself nonstop. It never ends.

Re: Max power for a b18b
 

Different dynos read differently, but the most you should see is 15-20% difference between a Mustang (low) and Dynojet (high). Sometimes larger differences occur, that aren't intentional... for example, the dyno operator could be a ------- idiot. I have met a few that were. :l

324 whp on a Mustang would be 375 whp on a Dynojet, or at least I replicated 325 and 375 going between aforementioned Dyno Brands with Stevo's Civic.

Re: Max power for a b18b
 

So basicaly what your saying is that a hp number doesn't really mean to much. Unless you have something to sell.

Re: Max power for a b18b
 

BTW JD, remind me never to ride with Goforth again, Stevo's car is ------- incredible. Hp #'s dont do it justice. That thing has TORQUE where it counts. A daily driven street car that can eat LITER bikes ON TOP> :S

150mph when its snowing is scary, even if the road wasnt wet...

Re: Max power for a b18b
 

Yah it doesn't suck. F/H motors are freaking sweet, shame the transmissions suck.

Re: Max power for a b18b
 

I tuned my teg myself @ 16psi. However there is no way in hell I'm tuning a car for 25lbs on stock sleeves. I'll leave that to someone with a bit more experience.

JD, I trust the guy as some of my close friends know him personally. He's a douchebag but he knows his ----.

Re: Max power for a b18b
 

whos ran a ford 60/63 T3 on a LS? im shooting for 250 reliable, will this turbo do that efficiently? will i need to upgrade my map sensor? when did you see full boost?

Re: Max power for a b18b
 

Yeah Ive never met him but Ive Estalked all of his posts and came out with some knowledge.
I would actually have Jd tune a car for me if he lived closer. I would also let Blundar do it. And I'd trust Leed to. But when it came down to it I realised All I was doing was reading about tuning all the time anyway and for the price of a tune I could get all the tools to do it with ,so I decided to learn to tune for myself.

Now if I had some really expensive high dollar bling factor setup I'd probably have Dave do it at zerolift.

But honestly all I have to lose is a 150 dollar f22. That at the moment loves 5 psi on an evo 8 turbo. I had to drop the boost back until I get my fuel pump from Xencron and a few other goodies. it was at 100% duty cycle around 8ish psi on the stock pump with 510cc injectors. This evo8 turbo from an 04 evo was totaly worth all the trouble. it's twin scroll and builds full boost at 2500 then the power comes on really smooth.

*L* then my tranny broke and it's sitting on jack stands waiting until thursday when I have time to put it back together.

Re: Max power for a b18b
 

Good matchup. I didn't personally build one for myself, just put one together for a friend. Had his boss tune it with Uber on stock map sensor at 10psi, and I'd say it was pretty damn close to that 250 if not more. He started hitting the threshold right around 3800 rpm.

Re: Max power for a b18b
 

Sweet! Because that's what I"m going to be running like i've mentioned. I want to see if I can get 260-275whp out of my stock LS. Thinking about tuning up to 15-16psi. For the weekends/track, and 10psi daily.

I have to run 10psi regardless. Guy that sold me the tial wastegate forgot to put the 6psi spring back in, and left the 10psi spring in. Hey gives me an excuse, plus 6psi wouldn't do much at all on that turbo. I need power dammi..............Power, Power! :S lol

Re: Max power for a b18b
 

If you got to 16 psi, you can do 25 on your own. You'll need dyno time, both for ease and confidence. Either she makes more power as you advance the timing, or you need to take some out. It's a pretty easy feedback system. There are a few pointers for finessing more power out after you get that far, but nothing critical to safety... except for reading your plugs and setting individual cylinder fuel trims. :)

Cool beans. There are a lot of knowledgible guys out there, but I like making people paranoid so they don't make the decision lightly. Hopefully they research and learn a little about tuning themselves, even if they don't want the hassle and frustration of tuning they are better able to identify who knows their ---- and who doesn't.

I have. Boost by 2500, 10+ psi by 3200, you'll probably need 11-14 psi depending on the efficiency of your setup to get 250 whp out of one, so pick up a 2.5 bar. The OEM T3 turbine wheels are a bit small, so they start to choke things around 250 whp, which bottles up heat. Go a little conservative on timing and rich on AFR (11.2-11.5 AFRs) and it'll last a good while.

Re: Max power for a b18b
 

I was a closet LS hater. Then I rode in one that made decent power, AND a ---- ton more ass-dyno verified TQ through the mid range than my GSR.

If I had a LS Id keep adding boost until it made around 260-270 peak TQ, make sure it didnt ping or have cooling problems, and then rock the ---- out of it daily.

Re: Max power for a b18b
 

I made 265hp and 228tq at 13lbs with my t3/t4 on completely stock block w/arp headstuds
Street tuned by ^Leed^
We just turned it up to 18lbs, gotta get to the dyno to see where I'm at now.

Re: Max power for a b18b
 

my ls made 210whp and 197tq on a dyno dynamics on 6lbs. on a fmu.

Re: Max power for a b18b
 

Wow, you must have closet hated me, and you probably couldn't have stood Speed Phreak in the height of his non-V-Tech liter bike smashing days. ;)

Re: Max power for a b18b
 

First turbo car I ran in was a turbo ls in a civic so its near and dear to my heart. Almost 9 years now jeez.

i would love to build an ls motor.

instead i think im gonna build a d16y8 single cam