Auto or 5-speed?

 

Using the tire Size Calculator your rear tires get 816 revolutions per mile. Slightly more than the stock 245/45-17's 810 revolutions per mile.
Calculator: Tire Size Calculator - tire & wheel plus sizing

Plugging that into Cliffyk's "How fast each gear" calculator (note: you have to tweek the tire diameter to get 816 revolutions per mile) and you get 107.6 mph in fourth and 173.6 mph in 5th (T-3650 transmission) with 4.10 gears at 6000 rpms.
Calculator: http://www.paladinmicro.com/pmicro.php

Of course, top speed in fifth is limited by horsepower not rpms.

 

Using the tire Size Calculator your rear tires get 816 revolutions per mile. Slightly more than the stock 245/45-17's 810 revolutions per mile.
Calculator: Tire Size Calculator - tire & wheel plus sizing

Plugging that into Cliffyk's "How fast each gear" calculator (note: you have to tweek the tire diameter to get 816 revolutions per mile) and you get 107.6 mph in fourth and 173.6 mph in 6th (T-3650 transmission) with 4.10 gears at 6000 rpms.
Calculator: PaladinMicro

Of course, top speed in fifth is limited by horsepower not rpms.

So in other words, with an auto, I'll top out at 107 mph? From a previous ~140 mph (though it took forever to get from 125 to 140 )

Topping out below 200 kph (~125 mph) feels "slow"...not at the strip but on tracks like nürburgring with its long long straight....

Should I perhaps stay with 3.73 gears?

 

sorry, I forgot, it's an auto....

 

Since third on an auto and forth on a manual have the same 1:1 gear ratio then its 107.6 mph in drive. Technically, it calculates to 153.7 in overdrive but it is my understanding that running hard in overdrive will tear up your transmission. I've read that it tries to engage both drive and overdrive at the same time. That's why it recommended to turn overdrive off.

Edit: We posted at the same time. 3.73s increases your top speed in drive to somewhere around 118.3 mph at 6000 rpms. If I calculated it correctly that's 190.4 kph. I like kph. It sounds really fast.

 

yeah that's what I've read as well...I'll think about which gears to go with.
Thanks for your help.

Can I, with my tuner, set the default overdrive setting to O/D Off?

 

Can I, with my tuner, set the default overdrive setting to O/D Off?

Nope. Just remember to lock out OD before going WOT at speed.

 

It will be the same. It will just take you longer to get up to your top speed.




That mobile device thingy

 

Whats the top speed overall anyway with these mighty fine 4.10 gears ? Im talking balls to the wall hitting rev limiter in 5th? lol

 

Its limited by power and drag. On a stockish car you'll be limited to around 140. With a Tremec 3650 and 245/45/17 tires, 4.10's will give you a hypothetical top speed of almost 175.

I'm sick of my friends talking about gearing and top speed since there are a lot more things going into that equation. My friend claims his RS-X can go 155 soley based on the fact that the gearing would allow it before redline. Hey guess what, with my 4r70w and 3.27's my hypothetical top speed at redline is 194.3 mph! Suck it!

 

My friend owns a 06 RSX and I drove it and topped out at 157mph thats hitting revlimiter with full bolt ons. My old built Acura Integra topped out at 172mph. I dont care about top speed anymore its all about that hp and tq only counts if you can put that powa down.

 

My 01 Mustang Gt hits 210mph easy thats in 3rd !

 

They see me trollin.........

 

Tell me
More.




That mobile device thingy

 

You can only lie so much ! lol I just wanted to get a couple laughs out of it

 

I got mine to 142mph in fourth gear at redline, didn't really care to try fifth. Stock rear end. If you want top speed 4.10's aren't for you. Or just use overdrive

 

Ive only gone 110 in my auto 2002 mustang gt with 285-35/17 and stock thats because I dont wan tto mess up my tranny and.i slow down. And I had o/d on. Just watch it and research before going that fast. And check ur tires speed rating.

 

My car is a auto with 4:10's and it currently traps 114 in the 1/4. Its got plenty of room RPM wise to go 118-120 in 3rd.

 

Just letting you know a stock RSX tops out at like 145

 

I have an auto with 4.10s and I have had it up to 140 theres alot of 2-3 mile straight stretches on highways that are abandoned between 11pm and 5 am around me though

 

Here's my How Much Horsepower Does it Take to Go How Fast? calculator.

This is its output using typical parameters for a new-edge GT:

Here is the tabular data for typical n/a top speeds:

To calculate your vehicle's top speed you need a dyno chart, and need to do a bit of "back and forth" to zero in on the final number.

For example, using my '03 GT with 3.73 gears and an older dyno chart:

I will pick a top speed from the table--let's say 155 mph.

The table shows that at 155 mph, with 3.73 gears, the engine would be spinning 4840 rpm (2nd column, middle number) and it would take 227.1 rwHP to sustain that speed. So, going to my dyno chart you can see that at 4840 RPM my engine can deliver 250 rwHP or so--more than 227, so let's try again.

The table shows that 160 mph would take 248.8 rwHP at 4990 rpm. Looking at the dyno chart you can see that there is still 250 rwHP at 4990 rpm--so it appears that 160 mph would be the "pedal to the metal" top speed for my car.

The fastest I have had it going was a bit over 146 per my GPS, and it had some left and I think on flat ground with no wind you could have waited and gotten within reach of 160...

--------------------------------------------------------
One other comment, the tire diameters and revs/mile used on both my calculators are 97% of the calculated tire diameter. I use that factor because a loaded tire has a lesser effective tire than its calculated/unloaded diameter. This improves the accuracy of the calculators...

 

I've hit 141. Well that is what it said on the speed-o-meter. But there were extenuating circumstances.

 

looks like the black man on your pic is doing the bernie dance lol

 

I hit 143(in an auto) for a bit on mine over seas that was with a stock rear end and a catback no tune or anything but it wasnt at the redline but it seems as if the car was out of steam or wouldnt go past 143mph(loved the highways in Germany)!

 

I hit 143 for a bit on mine over seas that was with a stock rear end and a catback no tune or anything but it wasnt at the redline but it seems as if the car was out of steam or wouldnt go past 143mph(loved the highways in Germany)!

Same exact thing here. I know I'm a totally different ball game though. I have 3.55's as well.




That mobile device thingy

 

You guys got me thinking, I never tried to go all the way balls to the walls on my mustang (4.6 stick) when it was stock, maybe now with 4.30s cai tune and UDPs I can hit somthing... Hmmm

 

Cliffyk: thanks man...what kinda of mods you got on yours?


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It's all in my signature...

 

I love this thread =D!!! On my stock 3.27s with a 4r70w I've topped out my speedo @ 150 =). Whatever you do...don't bang into O/D at WOT... Found this out while doing 150mph trying to keep up with a Termi that was doing 170mph... Yeah..no bueno. Trans Malfunction light anyone?

 

So If your in a manual that basically means no fifth gear right?




That mobile device thingy

 

it basically means your trans is fu****. lucky for me it just overheated

 

So in turn no fifth gear. Right? Haha




That mobile device thingy

 

So in turn no fifth gear. Right? Haha

Auto's are different from manual transmissions. At WOT the auto is trying to downshift into a "passing" gear. I've been told that causes it to engage both third and fourth at the same time thus, damaging the transmission.

That is not a problem with a manual transmission. I have heard of people who are geared too low going to fifth in the quarter.

 

Slamming into od under wot...do u mean pressing the od button?
Being used to only stick cars....I did that a few times in the beginning so now i have some issues with the neutral to 1st shift....


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Essentially no 5th gear lol. And the automatic trans is not meant to hold the pressure of shifting into o/d at WOT. When this happened to me, I was already at 140 before it hit o/d, and once I began to decelerate the trans malfunction light came on and the car started acting funny. So banging o/d is pretty much shifting into o/d at a high speed, which causes it to overheat and potentially break. And i do nto mean pressing the button. It automatically shifts into o/d unless you previously turn it off.