TheShodan

iTrader: (14)

Because he doesn't want to put himself in a position to die anyway, and any more power is pretty much just for bragging rights at that point.
This is especially true if he has very little experience with high horsepower FWD applications anyway. Not everyone is you or Gringotegra (who only uses that type of power for actual SANCTIONED racing.)

AZ_CIVIC

iTrader: (1)

I was only kidding but as far as not putting themselves in a position to die I would suggest not doing highway pulls because that really puts not just themselves but others at risk to die.

Building a 600whp specifically to beat others freeway racing is trying to have bragging rights honestly. Why else would you build a 600whp car to race on a freeway, to lose?

TheShodan

iTrader: (14)

Heh.. Touche'. Interesting point.

LightningTeg

Pretty much the limit and past that you are only using it @100mph+ anyway. These cars are just not built for it.

Geis

What do you think about the prospects of upping your CR and lowering the hp by some amount? Hypothetically, would you think it would be a good idea for the OP to do similar and sacrifice a bit of hp from his goal in the name of responsiveness? Or would a straight-up slightly smaller turbo be better?

TheShodan

iTrader: (14)

Lowering CR slightly really stingy change anything for the purpose he's using it for. And that lightingyeg has physically IS smaller than a 6262, and this, more responsive anyway.

Geis

I don't think you correctly read my post. I was asking about the prospects of raising the CR, perhaps to ~11 or 12:1. Also, I'm fully aware that the interceptor is much more responsive than just about any comparable precision (although I haven't seen the results from some of the Gen2s, I remember Tony the Tiger mentioning transient response on precisions are generally inferior).

LightningTeg

Any gain in torque at lower RPM is a good thing for performance, and it doesn't necessarily have to sacrifice horsepower up top either. But either way you're running into the same problems. Past a certain point raising compression ratio just narrows the window for things to go wrong and increases necessity for high quality fuel and tuning. You can achieve 95% of the way without going crazy with it and have a reliable vehicle that you can drive to work just fine anytime you want.

2001GSRSC

Ahh, ya..A episode of 'keeping it real goes wrong'... I have not seen too many go past 250whp on a dyno locally . Some you guys have made 300+hp and then found that the trans breaks after 10-20 hard shifts. What transmission are you using, a Honda box won't hold that for long? Mine are done up with Synchrotech carbon fiber too.

Are they giving away prizes at the toll booth? Why are you doing this.

Making your car perform well on planet Earth is one thing. Once you get 'there', for me its no longer a competion. I hit the Afterburner, and let everybody bicker about the details. Stay safe.

2001GSRSC

I thought this was a dominate the freeway thread. The box is a little weak for that much power.

Your telling me you are making 300+ at the wheel and your not breaking the trans? Even 1 bar is going to seriously degrade the service life of the tranny. 600 hp? It probably could not take 10 full throttle blasts. 600hp what is that like 95 psi, or an even cent?

Why are you building 600whp?

Earth , its where I live. Flat or round its all good.

I agree, what does it all mean?

TheShodan

iTrader: (14)

Again, I'm not sure where you're getting your information from, and you are entitled to your opinion, of course, but there are a LOT of B-series that are using basically stock OEM transmissions to make that power. It's torque that can break these machines (that, and a good mis-shift, which could hurt any transmission), and when lubricated properly, sure. It's fine. And I for one can vouch for that for a good number of years on my stock transmission that is still just fine to this day. 14 years later with over 500whp on it.

Several examples: Just off of the top of my head.. There's hundreds more floating around.
https://honda-tech.com/forums/forced...build-3199598/

https://honda-tech.com/forums/forced...3017676/page6/

https://honda-tech.com/forums/forced...egacy-3238858/

I'm not sure if you're serious about the whole "95psi" comment or not. I would assume that psi is not directly correlated with wheel horsepower . If you are, perhaps another discussion about what boost pressure really is, may need to be in order

I think this was clear in the above comments made by the OP and others. It may be best to re-read those posts as to his purpose.

Huh?

2001GSRSC

Yes , I am serious. The B/H transmissions are not designed for 500 hp. I have 2 boxes apart in my garage right now. One is damaged case , the other is oil starvation. I do not even make 300whp.

When your are not blue printing engine internals, boost is generally correlated with power production. 10 psi is more hp than 5 psi.

I'm in IL , what garage you go to that has people dyno-ing 500hp B engines? I do not remember even hearing of any from the operators.

What is your total timing and base idle timing?
I ask because perhaps you are softening your low end gears through 1st-2nd. Prepping it for pulling in 3 rd. Or idle reduction. Reducing to 16 idle or something , 20 or 22 is better start for me.

Todallybuilt

iTrader: (1)

So here is my friends ls/vtec that made 522whp and his tranny has lasted many years of racing and just beating up on it. Here in VA is pretty common to see Honda's 500+ it's like it almost became a standard. Not sure how this thread went from talking about turbos to talking about transmissions, but Honda transmission are pretty durable.

LightningTeg

I've been rolling around on a stock gearset @ 500whp+ for many years. And I can assure you it has seen more then 10 hits haha

AZ_CIVIC

iTrader: (1)

650 plus is where they start falling apart, 700-800 you can get away with Liberty Face Plating, above 800+ I like PPG.

TheShodan

iTrader: (14)

You're definitely behind on the times here. I've had countless shops do over 500whp across the countrydo this no problem.

You're also not taking account of the turbocharger flowrate itself in your calculation.. You're way by of in your calculation.

Base timing is 16* still. You want specifics, head to the engine management forum and ask there, this isn't the place for that.

2001GSRSC

This is the forced induction section. You don't talk timing in the forced induction section? That's not right. Timing setting have to be specialized for the forced induction. Seems the right place to me, you must be left. Eh?

My experience at base 16 and with a performance clutch, it is gonna make for some choppy starts. You do not want that shock load traveling through it. 20 22 starting from 950 and I get dramatically smoother, faster starts, no chop. Or the engine would need to be preloaded to a few thousand RPM.

These aren't my times. For sure.

Places by me across my country, I saw and talked to, about 230-250 whp with about a bar maybe a little more. That would be where, I am starting to break stuff too, coincedence. I also roll on light weight 15's or 16's. I see some big shoes on these and think , how?

That car is BAD ***! Lucky friend.

ls joker

500whp/oem tranny club checking in

16 base also.





thread delivers today lol

Txdragon

To answer your question directly, you'll need to look at a few things first. Your goal: 600hp. That's a lot. Why you need it doesn't matter, nor your intended purpose (that just determines what you'll need to do in conjunction.). How you figure out what turbo you need is a little time to think, and some math.. Hopefully you know how to read a compressor map, you'll be looking at A LOT of them to help you pick. It takes approximately 1lb/min airflow to create 10 horses (to the crank). You're looking for 600.. 600/10= 60lb/min. Most compressor maps use lb/min flow rates, some do not. For those that don't, divide the CFM by 14.27 to get your conversion to lb/min. Then, using the map, determine where your flow rate and intended psi meet. Try to keep the turbo efficiency (according to the map) to >70%. Now that you've determined the flow you need and found the turbos that support your goals efficiently, you can use this calculator to see about what rpm it will reach your intended psi range.

Happy hunting!

AZ_CIVIC

iTrader: (1)

Oh heck yeah, a 6262 will hit 600 no problem. The Precision 6266 gen2 and 6270 have hit 1000whp.

ls joker

ummm.... where are you gettin your information from. Damn near everything youve said in this thread has been absolutely wrong. Id honestly like to know.

2001GSRSC

I disagree. That is no problem really. I been doing this for a while. Pretty happy where I'm at. My cars I have tuned , and are safe.

Up through 2008 I tuned at winner circle, the some at ILL garage these last years. I don't recall ever talking to a gentleman at either facility coming up 600hp. There is couple dudes, running similar 74-75mm combinations. I think they were in the 10's not 600 hp though. They didnt disclose their numbers, but they did not beat the Sound Design Supra at the dyno day event not even close to 600.

k20z1ej1

wrong.

who are you outrunning at 250-300 hp. stock v6 accords?

there are b series engines making north of 1500whp. like every other turbo engine, required boost pressure is relative to the size of the turbo, piping, throttle body, intake volume, etc. 600 whp with an average size turbo (gt3582, pte6262, etc) requires anywhere from 20-30 psi..... not 95-100 psi

if you are breaking b series transmissions making less than 300 hp, you are either using **** oil, dont know how to drive, or are beating on transmissions with 350k miles. idk what to tell you.

what the hell does that even mean?!?!

im quite sure there has been a few b series engines in Illinois that have made over 500 whp

pretty sure the gen 2 spools faster. pretty sure you dont need an 80mm turbo to make 600. pretty sure a 6262 or 6266 can make 600. in fact im 100% sure about all of those. speedfactory make 1523whp with an 86mm. ramey make 1350ish with a 72mm turbo and the list goes on and on and on.

k20z1ej1

at 1350 they arent using stock gears, only dog boxes.

AZ_CIVIC

iTrader: (1)

1200whp crew checking in, doing it with a 72mm, running PPG gear box.