Will VG tranny on KA increase top speed?

[twofortyrida1388]

I was wondering since the Z32 was more race bred would the gearing of the VG tranny increase top speed potential of an S13 KA.

[UNISA JECS]

The Z32TT/Q45 diffrential will increase the top speed by alot not sure exactly how much but somewhere I seen a diffrentail gear calculator.

[sc ka24e]

thay actually sold a conversion plate kit for the z32 tranny to ka bellhousing whith perfect shifter alignment a while back , was decently priced, dont know if they still offer it but as far as i know it was done just to be capabale of taking more HP ,TQ

[Bryants95240sx]

If you want more topend you want to change the rear end not the transmission.

[initial_drifter]

get bigger wheels if you havent already

[!Zar!]

You need to change your ring and pinion inside your diff. Not your tranny.

[twofortyrida1388]

Z32TT/Q45 diffrential/ are those a direct fit or will whole rear end be required? While we're talking about top speed what will a stock s13 standard top out at with auto ecu without blowing motor.

[twofortyrida1388]

So Z32 tranny will not increase top speed potential? Its all about the diff?

[!Zar!]

The diff is what determines your final drive ratio.

[projectRDM]

Originally Posted by twofortyrida1388

So Z32 tranny will not increase top speed potential? Its all about the diff?

I have an idea. Before asking a question about something you obviously have no clue about, why not do a little research? It's bad enough you're asking this question, but it's worse that you don't even know that a car is speed limited by it's final drive ratio, not the ratios in the transmission. That's basic physics.

Not only that, but how is the Z32 'race bred'? What does that even mean? You could say a D21 pickup is race bred since they're raced in various forms of motorsport, but would that be accurate?

[twofortyrida1388]

You are correct. I do not know gear ratios or any of that. I asked out of curiosity. By race bred I actually ment that the tranny and motor from TT Z32 are powerful and fast. Just a question and since I'm a noob I realize I will receive tons of flaming. Sorry for not being as knoledgable as you. I am only 18 and have had only 1 semester of automotive mechanics. I have much to learn and I will get there eventually. Please try not to beat me down and try to make me feel low.

Sterling

Oh, would this not qualify as a "little research". Whats wrong in asking a specific question than searching an hour or two for something that may not be what I'm looking for? I'm not talking shit or attacking, just stating.

[wangan_cruiser]

lol people out here should help out not flame everybody else when they ask questions.

and for noobs....hehehe try to learn search if u dont want to get flame on

[Kn1ves]

Originally Posted by twofortyrida1388

Oh, would this not qualify as a "little research". Whats wrong in asking a specific question than searching an hour or two for something that may not be what I'm looking for? I'm not talking shit or attacking, just stating.

Because searching for an hour or two gives you a more through understanding of everything. So now that you know that its the Final Drive ratio that makes a car faster and not the transmission. What else? Nothing. If you woulda researched you would have known why. Here i'll help you out.

And don't use the excuse about your age. Ive known 16 year olds that know more than you.

AGAIN, before you ask another question regarding to anything. Do some legwork.

[wootwoot]

beside....Longer gears with a low power car will make you even slower once you start getting into high drag. You wont be in the optimum powerband so wont be able to push so quick. But if you're in tech school....Just open the book then! =P

[5t341tH]

if ur still noob (like me) u can go check out this website.
www.howstuffworks.com
theres an auto section u can check out. its pretty interesting

[g6civcx]

Mathematically calculated and gear-limited top speed is determined by the effective top gear ratio, which is obtained by the product of the top gear ratio and the final drive ratio.

The engine turns at a certain angular velocity, which turns the output shaft of the gearbox, which turns the ring gear, which turns the wheels. All of these together determine the vehicle's top speed.

Other factors such as drag, slip, rounding errors, etc. also affect top speed as well.

To answer your vague and indefinite question from the first post, it would depend on how your S13 is geared right now and what the new gearbox has internally. Most 6 speeds would have a higher OD in 6th than a 5 speed would have in 5th. So you may assume that the thereotical top speed of the vehicle increases with a taller, mathematically lower 6th gear OD. But again it would depend on the individual setup.

Find a spec sheet for both gearboxes. Whichever box has the numerically lowest gear ratio in top gear will yield a higher top speed, and dependent upon other factors discussed above.

[jobestudios]

whats the point?

[S14DB]

Beating civoks on the wagan yo!

Originally Posted by R240NA

I have an idea. Before asking a question about something you obviously have no clue about, why not do a little research? It's bad enough you're asking this question, but it's worse that you don't even know that a car is speed limited by it's final drive ratio, not the ratios in the transmission. That's basic physics.

Not only that, but how is the Z32 'race bred'? What does that even mean? You could say a D21 pickup is race bred since they're raced in various forms of motorsport, but would that be accurate?

ah yes, looks like russ has forgotten what its like to be young and stupid. now, he's old and stupid. :-) or atleast old and cranky.

[!Zar!]

It's funny.

Nubs and kids alike want a lower final drive.

While people who actually track their car prefer a higher final drive.

[irax]

Originally Posted by R240NA

I have an idea. Before asking a question about something you obviously have no clue about, why not do a little research? It's bad enough you're asking this question, but it's worse that you don't even know that a car is speed limited by it's final drive ratio, not the ratios in the transmission. That's basic physics.

Not only that, but how is the Z32 'race bred'? What does that even mean? You could say a D21 pickup is race bred since they're raced in various forms of motorsport, but would that be accurate?

actualy a car is speed limited by aerodynamics and its ability to over come it THAT is basic physics.

[twofortyrida1388]

g6civcx thank you very much for the info/help. 5t341tH, howstuffworks is the shit. Kn1ves, those 16yr olds are very lucky then. They prob have family with money, or they have a relative that works on cars that tought them. I got my s13 in late oct. This is the first car I have been able to learn hands on with. I didnt grow up with money or a knoledgable relative, or help of any kind. I have been on my own since I was 17 and just recently have been able to afford to get into drifting/240's. So dont criticize me for not knowing as much as a goddamn 16yr old. Like I said I'll get there. I personally am proud of how much I have learned in the past 5 months. Less than a year ago I could'nt have told you what a throttle body is or vlave float or anything basically. It seems to me no matter how legit a question may be one of you old people/or more knoledgable will shit and step on us who don't know.

[kdashy]

Originally Posted by twofortyrida1388

It seems to me no matter how legit a question may be one of you old people/or more knoledgable will shit and step on us who don't know.

How legit do you think this question really is? Is your stock KA topping out already?

[jrocslider]

poor kid... i'll keep the flaming to myself. buy sumthing thats worth it. suspension, idk.... higher top speed on a stock KA... why? i did a 5 speed swap on an old 240 of mine back in the days... kept the auto ecu... removes the top speed limiter. whats the point really? stock KA top speed=136mph (from my past experience)

[twofortyrida1388]

I didnt want this to turn out the way it did. I just had a simple question and it/they were answered. No, z tranny will not increase speed, dif will, learned. A stock ka with auto ecu will top out at 136ish, thank you and also learned. What kind of damage will going 136 do to the KA? This one guy in a built rsx was racing a m3 on freeway(bad idea) the m3 was cruising basically and rsx was pushed pasted the limit and at 165 melted header to block and fried the pistons.

[irax]

Originally Posted by twofortyrida1388

I didnt want this to turn out the way it did. I just had a simple question and it/they were answered. No, z tranny will not increase speed, dif will, learned. A stock ka with auto ecu will top out at 136ish, thank you and also learned. What kind of damage will going 136 do to the KA? This one guy in a built rsx was racing a m3 on freeway(bad idea) the m3 was cruising basically and rsx was pushed pasted the limit and at 165 melted header to block and fried the pistons.

I did 6krpm in my auto s13 for 20 minutes and it did fine

[axiomatik]

Originally Posted by irax

actualy a car is speed limited by aerodynamics and its ability to over come it THAT is basic physics.

Actually, a car's top speed can be limited by one of three things, and all are basic physics :

1. Speed Limiter: The ECU cuts fuel or spark to prevent the car from accelerating any further.

2. Drag Limited: The car is generating more aerodynamic drag than the engine can overcome, even though the gearing is tall enough to go faster at redline. The more power you have, the higher this limit is.

3. Gearing Limited: The car hits the redline in top gear before reaching it's aerodynamic limit. You will have to re-gear if you want to go faster.

And the mph speed of your car really does not affect the engine's longevity. You could blow your motor at 60 if you tried it in first gear.

[steve shadows]

1. Speed Limiter: The ECU cuts fuel or spark to prevent the car from accelerating any further.

2. Drag Limited: The car is generating more aerodynamic drag than the engine can overcome, even though the gearing is tall enough to go faster at redline. The more power you have, the higher this limit is.

3. Gearing Limited: The car hits the redline in top gear before reaching it's aerodynamic limit. You will have to re-gear if you want to go faster.

I really REALLY doubt very many people (if any) on this board has enough applicable HP to the road to reach gear limited top speed and who would need a longer final to use as well as appropriate TASTEFUL and FUNCTIONAL aero to make a drag limited top speed less of an issue.

Hopefully I can be that guy.

But in the mean time. the z32 gear box is most popular because the gears themselves are larger and the design is fundementally stronger in oem shade.
The SR tranny is usually swapped out for the Maxworx kit for example for high load and high trqoutput drag applications etc.

I want one, go get one if you need it. But to the Original poster...WHY?

[Kn1ves]

Originally Posted by twofortyrida1388

g6civcx thank you very much for the info/help. 5t341tH, howstuffworks is the shit. Kn1ves, those 16yr olds are very lucky then. They prob have family with money, or they have a relative that works on cars that tought them. I got my s13 in late oct. This is the first car I have been able to learn hands on with. I didnt grow up with money or a knoledgable relative, or help of any kind. I have been on my own since I was 17 and just recently have been able to afford to get into drifting/240's. So dont criticize me for not knowing as much as a goddamn 16yr old. Like I said I'll get there. I personally am proud of how much I have learned in the past 5 months. Less than a year ago I could'nt have told you what a throttle body is or vlave float or anything basically. It seems to me no matter how legit a question may be one of you old people/or more knoledgable will shit and step on us who don't know.

Dude, I don't want to hear your life story. I was one of those 16 year olds that knew more about cars than you did. Why? Because I have a fascination with them which started early, I read about cars, much like you are doing now. Don't use the excuse that you lack money. Magazines are like $5 and internet is free at public library (and at the iPod store ). It's great that you finally started liking cars. But don't use your age as an excuse. Its Ok, whatevers, hop the bandwagon.

If you want to learn, read. If you don't want to get flamed, search.

[g6civcx]

To the original poster, get yourself a good book on motorsports engineering. Go to your local bookstore or Amazon. It will have all the basic info you're looking for.

Asking the forum this type of question won't get you much.