Joonas

the PO of my car put pinner little tires on the stock rims and my speedo says im doing 80 when im doing 50. tested by GPSso I dunno what my top speed is. Plus I blew a coolant seal the first day I had my car

Bambam7

OK, that's a great theoretical formula for finding out what final speed CAN be in relation to RPMS, but show me the NA (or TII!) that can get to 7000rpm's in 5th gear without dropping it off a cliff... tell me you're forgetting that it takes horsepower to punch quite a hole in the air to make a car go 182 mph!!!!! Once the friction/drag amount equals the horsepower being put out by the car, it can't go any faster.... sheesh.

rotary>piston

Are you stupid? Horsepower has EVERYTHING to do with top speed! All you did was show that the gearing of an N/A has more potential speed, but gearing can be changed. You can't just pull 150+hp out of your *** and make an N/A go 180.
I think your data for the n/a is wrong anyway. I don't think even an s5 n/a has the gearing to go 180, unless it had oversized tires that is.

BDoty311

RX-7 gearing

Here is the gearing for FCs. Yes N/a are geared higher than TII, but it doesnt have the power to get there. By your theory 'Verts have a higher top speed than TIIs. Actually having a higher final drive will increase your top speed because you will be in the higher rpms.

RotaryWeaponSE7EN

iTrader: (6)

I hit 150 on the way to KC today.

Mephis

Only place i go real fast is this 4 lane highway thats smooth as a babys *** never anything wrong and guess what everyone on a good day drives at about 90+mph so im not going much faster, hehehe well im going quite a bit faster lol but not that fast. The 1st time i ever got respect for my FC was when i went over 135mph and saw how secure it was, that got me hooked on rx7's.

KiyoKix

I've done 180+km/h EASILY in my FC GXL when I first got the car and had literally no mods done except some 93 octane fuel (it was on the drive home from the place of receiving the car). With the mods that I have now I'm quite confident that I could hit 140, anything after that I doubt...maybe 145. Speed is not an easy thing to come by, BUT these cars are anything but slow.

KiyoKix

skim003 you should do a search on my post on "How to get speed 101" to see exactly what it really takes to get speed. It'll show you that hp has A LOT to do with speed...but none the less aerodynamics is ultimately the king. Everything must go hand in hand...aero numbers, peak hp (rwhp NOT FLYWHEEL/bhp), and gearing don't make speed themselves they must ALL go hand in hand or you'll never gain speed.

downwinddave

I assume everyone has seen the Racing Beat RX-7 crash@215 mph video clip.

astrochild7

iTrader: (3)

not to sound like a crazy guy or nothin..... but when i lived down on DALLAS TEXAS i used to get on central heading either way and just nail all the way i guess my avg speed was around 130-145>> ////\\\\ i would just humilate these guy's on the road yes some were afraid to go that fast others just couldn't get there near as fast... soon to be killen people up hear in eugene....

prmazdarx7

147 on my 91 gxl

skim003

repost

skim003

Maybe I should have said theoritical top speed, assuming that both cars can reach 7000 rpm in 5th gear, and that there is unlimited length of road, and not counting in the friction at that speed and aerodynamics, and wind. I was just pointing out that gear ratio, redline and tire size is what limits top speed. In real life HP does matter but if the car is only geared to go X mph no matter how much more HP you have you will be limited to X mph in top speed. In that aspect horsepower doesn't really matter. I'm not saying that stock NA will go 180+ mph but it has the potential to reach that speed (given the right condition) where as stock TII only has potential to reach 169 mph (given the right condition). All this is theoritical, only counting in gear ratios, etc. Hp is also relative to certain conditions, and constantly changes under certain conditons, and peak horsepower is usually not at the redline so it's not the ultimate limiting factor, and you can over come the problem of Hp through other factors, but gear ratio is basically constant that is why I said that gear ratio limits top speed.

There's really no need to call people stupid, unless you can show me a relationship between Hp and how it has EVERYTHING to do with top speed and show the correct data for RX-7 you have no room to call other's stupid.

jcina7

i put the T2 rear and trans in my vert and and my top speed hasnt been effected that much. i can still pull over 140 and thats in 4th gear on my S5 N/A.

http://www.geocities.com/b_timberlak...?1047070607570

astrochild7

iTrader: (3)

skim003 >>> that is a common misunderstanding with cars and hp.. i was talking to these guy's the other day and he was saying just how much faster his car was and i pointed out the fact that he hasn't changed hi gearing so his car can't actully go a faster top speed.. that guy argued with me and looked like a real dumb ***

cmn65401

this all according to distance and time. my speedometer said 155 and i don't know what my revs were but i traveled 17 miles in 3 minutes by the clock(yes i know it could have been closer to 5, given that it didn't have seconds on it) and i was still climbing when i got there but thought it was fast enough. this was also on an engine with 20% compression loss on #2. since then i have replaced my engine with a newer one and have not tested top speed (since last time was actually an emergency) but i do know that by the time i leave 4th gear i am outrunning a neon rt.

cmn65401

i have an 86 GXL non turbo. this all according to distance and time. my speedometer said 155 and i don't know what my revs were but i traveled 17 miles in 3 minutes by the clock(yes i know it could have been closer to 5, given that it didn't have seconds on it) and i was still climbing when i got there but thought it was fast enough. this was also on an engine with 20% compression loss on #2. since then i have replaced my engine with a newer one and have not tested top speed (since last time was actually an emergency) but i do know that by the time i leave 4th gear i am outrunning a neon rt.

cmn65401

damn computer keeps double posting

Rxmfn7

iTrader: (4)

Youre not outrunning a Neon R/T until like 140mph??

cryptowave

Did that guy survive?

He was still giving it gas after it took off for a bit there.

c-squared

What is your point then? Random calculations? Why don't you actually show RELEVANT calculations?
My case in point: A stock N/A will NOT achieve 182 mph. Neither will a stock TII. They will get no where close. Why not show what power level each car will need to get to that horsepower? This is by far a more important number than saying an N/A is geared to go faster. Gearing means nothing if you don't have the power to get up there.

A modified car will be required to get anywhere near the speeds you mention, and, in which case, redline, gearing, and power have all been significantly altered, so your calculations are still moot.

While you are correct in your calculations (actually, even that is not entirely true... the redline of S5 NA cars is 8000rpm, and they have a 0.711:1 5th gear), showing numbers without meaning or relevence is of little help.

In any case, you have no one to blame for this but yourself. Read your post: There is a HUGE difference between "top speed" and "Gearing-potential top speed".

86nainky

I have undesized tires... i think they're supposed to be 185/80?/14 i have 205/60/14 but anyways ive had my speedo up to 157 on 64 east in central KY...
Handled quite well but still scary sh**

downwinddave

If I had 12 inch wheels, could I get my speedo to 180?