BigLizard

post a video, that is if you still have your CL.

NightRider

My brother is stopping by tomorrow, so I can get a video up then. Yes I still have my CL, just hit 100K and only on the 3rd tranny

BigLizard

lol...only on the 3rd

CleanCL

iTrader: (4)

VSS is def in there somewhere, still trying to figure out the diagrams. i will scan and post up so everyone can take a look at the tach circuit.

typeR

keep in mind too that the quote from me when he responded this was that i wasnt so sure that the signal was from the tach at this point but weather the tach .wheel speed sensor or elswhere i think it can be found and clamped

rp_guy

high revving 4 cylinders with a lot less rotational mass..

03sixer

I read this whole thread and I just had to laugh. I can't believe people seriously think that signals to engage VTEC and control redline are done from the tach. No way that is possible. No reason to do that. Since the tachometer and the speedometer are getting their readings from other devices on the car, i.e. transmission, ECU, why would Acura rely on a secondary device for the readings (which would also mean that they would have to make the tach send and receive as opposed to just receiving) when there's already another device that determines the RPMs of the motor. We all know that the speedometers have been known for not being accurate...virtually all speedometers and tachometers in productions cars are not highly accurate. Race cars, and very high performance cars who NEED these to be highly accurate have specially made guages for these purposes. I can see no earthly reason why Acura would make the tach a redundant device to the ECU to send information to anything other than the Driver's eyes, which don't necessarily need to know precise data because the rev limiter protects them (by signals from the ECU not the tach itself) from killing the engine.

Come on people really...I know our cars have some sophisticated electronics, but having a tachometer that forwards on information????...just ain't true.

'01White3.2CL

NOTE: i only read the first page and page 6, so this may be redundant, idk...but it sure adds to the facts then!

look, the engineers at Acura are there for a reason, they dedicated their lives to producing the most practical performance out of the engine. For the J32A1 and the J32A2, they stopped at certain HP #'s they saw as practical (225/260, respectively)...from that, from countless tests, and from many equations of the physics sort, they determined exact points where the car should cutoff and where VTEC should engage for each variant of the automobile. we are a bunch of people who understand very basic physics knowledge and think we can do better than them!!! hahahahahahahahahhahahahahahahahaha!!!!!!!!!!!!

to sum this up, they have the redline at the critical point of the engine...in mathematics and physics terms, this is the maximum point, where anything before or after it= LESS HP!! Period! and the determined VTEC similiarly...w/ 100000s of tests!

now if they purposely limited our engines, and i only mean by redline and VTEC, then it might have been so that we would have been forced to buy Acura performance parts, so they can make more money. none of that exists, so the streetable and practical element of our motors are running at their maximum, no doubt!

but when FI gets in the picture, that is entirely different... also to clearify my bold part above, our engines obviously can carry more HP, what engine from the factory cant...the engineers didnt care about that, but ONLY of producing a practical car...

fuzzy02CLS

iTrader: (2)

Honda makes engines based on the max amount of performance from the least expensive, easiest, & fuel(IE emmissions) economy basis.
That goes for any car company.

Honda is known for underrating their engines & specs because of cost & emissions factors. It's true from a little civic to a new RL.

TheWeez

Yeah a lot of auto makers will do that to keep the price down. Yup Ford underrated the '03-'04 Cobra at 390HP because 400HP+ carries a higher gas guzzler tax. Many of those cars dyno at 400WHP+ stock. There's no penalty for underrating but there is for overrating as Mazda found out with the Miata and RX8 when they had to offer extended warranties or buy back.

rp_guy

you don't even make sense.
ANYONE, not just SCIENTISTS can look at a dyno graph and see where the powerband is. we don't need a PHD to see that power drops off after 6900rpm on an N/A car. if they could produce a higher HP car at the same price point, they would. competition is fierce.

Accord_V6_400m

iTrader: (1)

Lightweight flywheel + gas pedal= Euphoria

'01White3.2CL

if none of that made sense to you, than my point is indeed proven! thanks man!!

brianlin87

iTrader: (1)

so much knowledge and so many idiots in one thread. if you don't know what you're talking about, don't reply. i forsee many being confused over this entire thread.

typeR

thank you !

Cocoa

iTrader: (2)

Could have sworn everything you needed to know was on page 4.

NightRider

I have the vtec controller video if someone can host, my software is being f'ed up right now.

RUF87

Don't go there . . . as high rev'ing 4s aren't the only game in town. I built chevy V8s that rev'd higher than the TypeS will . . . all day long. Ah, the sound of a V8 that approaches 8,000 rpm . . . I can still hear it . . .

and I remember back then guys swore V8s couldn't run that high, let alone out last a tranny, drive shaft, a rear end or 2 . . .

Believe what you want, this V6 would not have a problem running 7,500.

Ruf

RUF87

agreed, I get wound up when someone hangs their hat on a single word or sentence out of several paragraphs and tries to put words in your mouth . .

Ruf

NightRider

Gate Shift 1st to 2nd
http://img531.imageshack.us/my.php?i...1000883ur8.flv

VTEC controller 6900 rpm redline
http://img531.imageshack.us/my.php?...p1000881ek5.flv

NightRider

EDIT: Use the link to the other thred, it isn't working in here...
https://acurazine.com/forums/ramblings-12/theres-rumor-going-around-190671/

NightRider

The vafc video is in 1st so it's kinda quick, I tried 2 second gear ones on the highway and they were too jerky. I know the acceleration seems slow, but we are a mile high.

SIRSIG

found this one posted by allmotor on a different thread.

he didn't say how one can raise the redline to 7.5k though

YeuEmMaiMai

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
235/35-17..........3.2in...11.7in....23.5in..........73.8 in............859...........0.0%
245/45-17..........4.3in...12.8in... 25.7in......... 80.7in............785...........9.4%

Personally I think you got your #s backwards as a larger tire = less revs per mile versus a smaller diameter tire........car would turn LESS revs with the larger tire...can't get around the math......... less revs = lower engine speed at same indicated speed unless there is some other problem with the car.


but I guess you knew this already?

typeR

if the wheel speed sensor is seeing fewer revs does it allow the engine to over rev? maybe this is stupid to since they are connected the real final drive is the tire ... no maybe it does make sense if the wheel speed sensor is looking for some many rotations a taller tire would allow the engine to over rev and a shorter under rev...

OperationDarkie

iTrader: (1)

Jet fuel is a derivative of diesel, so no you do not want to try jet fuel in your car, used to wrk on aircraft for a living, they used jp-2, jp-4, and jp-8

Jacobpockros

iTrader: (1)

Why is your shifter so high up? Wouldn't your throws be terrible?

brianlin87

iTrader: (1)

check the date much?

RUF87

. . well he is fairly new.

. . . wait . . . it's been 2 years since all this fun . . . I wonder if anyone has solved this challenge?

By the way, see my new post on modding the TCS control valve . . if that gets fixed, and we get another 500rpm . . I'm certain 13s are doable . .

Ruf

02 WDP TLS Black Interior w/ Black Grill Inserts & Cleared Headlights
**1/4mile 14.46 @96.07MPH (45-70mph test - 3.5 secs)
(**before headers, Hi-flow CAT, IMMs, Bored out Intake & TBs)
17x7 Konig Appeals SMF - P225/45ZR-17 Bridgestone RE960 AS
CT Icebox, Custom RamAir, CT Sways & Springs
3nd Gen Innovative Motor Mounts – Front & Side Only
Bored out Intake & TBs, Mugen Cooling Mods & Thermoblok
Ceramic Coated XS Headers & Random-Tech Hiflow CAT
NEO Anti Freeze & 5w-20 oil w/Militec-1
Tranny #3 Installed 11.17.2008

TheWeez

But why? Look at any dyno and you'll see that power falls off even before the factory redline. Put underdrive pulleys on most cars and you can raise your redline 500-1.5k fairly safely. I redlined at 8.5k in one of my previous cars (factory redline was 7k with fuel cutoff at 7.2k) but that doesn't mean I made any more power with that raised limit, even when I was supercharged. These aren't rotary engines, additional revs don't always bring more power.

RUF87

Well . . . it's not just a simple matter of where the HP/tq falls off . . it's a matter of where you get the max benefit from the powerband. It all depends on a number of things. Unless you do a lot of tuning at the track you'll never know for sure. I can tell you for a fact that mine still pulls strong right up to the rev-limiter, so I can't tell when it starts to fall on its face. Of course the best shift point is some where before it falls over and where the powerband is in the next gear. The point then is would you maximizing the powerband more by shifting at 6,900 or a couple of 100rpms higher? We can't make that decision without a dyno that takes it up to 7,500rpm or so . . . then you can map your shiftpoints based on the powerband results. And since no two cars are alike, especially once they are modded, it's even more important to have results that go past 6,900.

Oh, by the way . . . as I understand dynos . . . where you see the power curve drop . . that's where the program cuts off the test. But regardless, the fact is that the power doesn't just drop off the way the dyno shows it . . it'll start flattening out and then start dropping. How much we'll never know until we have some results from higher rpm tests.

Ruf

TheWeez

Just peeked at a number of CL-S dynos and it appears that power gets pretty flat at 6k RPMs and starts dropping a bit after. That's not to say that your car won't continue to pull past that RPM but you aren't seeing any additional power and may see power drop off as many of the dynos show. Then again you claim to be the expert so have at it. I could really care less.

silvervtec96

Part of the noise difference being heard is probably the IRMC switching the butterfly valve in the intake plenum open?

implicit

I think we all agree that for non FI applications raising the redline isn't going to give you a higher max HP.

The real benifit comes when changing gears - if you can shift at 7500 instead of 7100 you'll be at a higher RPM going into the next gear. Then the question is ... will it pull harder above 7000 then it will when you enter the next gear?

And the answer is probably yes ....

typeR

ding ding ding

typeR

and again its not like we're talkin 9k here 400 rpm just to make sure we dont bump the limiter and end up just above the dip at vtec on the shift

StreetKA

iTrader: (8)

here is my 5 seconds vid that shows the rev limiter stops around 7100rpms which is lie. i pluged in a OBD2 scaner and i did rev it couple times to redline on 2nd gear and 3rd gear the maximum rpms it showed to me was 6997 no more im running 235/40/18 tires and i think when i was runingn stocks 17's cluster showed lil bit lower rpms (like on the vid which is on 17's tires) on 18 it looks like it is around 7300 on the cluster. yes i'm six speed

http://www.youtube.com/watch?v=lmjQtbnEv5Y

rp_guy

hmm

StreetKA

iTrader: (8)

im just wondering how you just dont bent your valves like some of our members did mis shifting a gear. and they did just a litle above 7500

rp_guy

these aren't necessarily stock j32a2's.. or even j32a2's for that matter.. but tl-s valve springs should help this