Multiplying Torque

Post by **Nismo Sr22GT** » Wed Jul 31, 2002 6:59 pm

I was reading some old Muscle car book about performance, and it explained that the cheapest wayto make power is to get better gears, says that most cars might have a gearing of 3.3:1, that they multiply your torque, example, our cars have aprox 165 foot pounds of torque, multiplying that times the gearing in the stock gearing(3.3, this is just an example), we are actually applying 544.5 of torque, and that there are exchangable gears and are relatively inexpensive, around 100 bucks, to say, get gears that are 4.3,which would give 709.5 foot pounds of torque to the ground, does anyone know if this only applies to american muscle cars? or does it apply to us too? if so, this would be a great way to get alot more power by switching gears, the book also explained that anything more than 4.50 gears would have to be drag strip only with slicks bcs your tires would just spin, ud loose traction, i hope i made sense, any input would be greatly appreciated. Thanks

Post by **Daunttless** » Wed Jul 31, 2002 6:59 pm

It works sort of like that....I can explain further but I'm tired. The 240SX already has 4.06 gearing and the higher you go, the more top speed you lose. : )

Post by **AunVoh** » Wed Jul 31, 2002 6:59 pm

240sx gears are 4.10.9 :o

Post by **Nismo Sr22GT** » Wed Jul 31, 2002 6:59 pm

damn, so there goes my bubble *Pop*....so we cant do anything with that, how about lowering the gear ratio? will this gain some top end power or how does this work?

Post by **Spectre** » Wed Jul 31, 2002 6:59 pm

Our gear ratios are already low enough. I can cruise in 5th before I even hit 45. The ratios are so close that Nissan should have made our cars with 6 speeds. Are there any aftermarket 6 speeds for our cars(don't tell me to get an sr with an s15 tranny)?

Post by **AunVoh** » Wed Jul 31, 2002 6:59 pm

umm, i've not heard of after market tranys, so i would think yes you have to get the s15 6 spd *sigh* and we all know how good it is

Post by **kilipo4** » Wed Jul 31, 2002 6:59 pm

Nismo Sr22GT wrote:damn, so there goes my bubble *Pop*....so we cant do anything with that, how about lowering the gear ratio? will this gain some top end power or how does this work?

If you go for a higher top end speed you loose torque. They go hand in hand. More torque = Less speed & More speed = Less Torque.

As for a 6 speed tranny, what about the 300zx one.

Post by **AunVoh** » Wed Jul 31, 2002 6:59 pm

isn't the z32 300zx a 5 spd tranny?

Post by **Spectre** » Wed Jul 31, 2002 6:59 pm

yes it is a 5spd.

Post by **kilipo4** » Wed Jul 31, 2002 6:59 pm

Damn. I was thinking that there was a 6spd in the 300zx at one point. Oh well....it got me another post anyways (4 posts, here I come!).

Post by **hurddawg** » Wed Jul 31, 2002 6:59 pm

you can get the Nismo 6-speed which mounts to the s13/s14

or HKS 6-speed.

Post by **Xeromist** » Wed Jul 31, 2002 6:59 pm

hurddawg wrote:you can get the Nismo 6-speed which mounts to the s13/s14

or HKS 6-speed.

$$$ cha-ching

Post by **Spectre** » Wed Jul 31, 2002 6:59 pm

hurddawg wrote:you can get the Nismo 6-speed which mounts to the s13/s14

or HKS 6-speed.

Which engine is that for?

Post by **Daunttless** » Wed Jul 31, 2002 6:59 pm

Its for the SR, if you have a KA, just change bellhousings.

Post by **hurddawg** » Wed Jul 31, 2002 6:59 pm

it would be cheaper than buying a S15 stock tranny. Since most places won't sell just the tranny, custom work is required for the S15 stocker and the Nismo/HKS is a heavy-duty unit (more so with the HKS). I think it was $3k with driveshaft and mounting kit. I posted the info on the old forum.

Post by **Xeromist** » Wed Jul 31, 2002 6:59 pm

hurddawg wrote:it would be cheaper than buying a S15 stock tranny.

I was just saying that pretty much any way you slice it, changing to a 6-speed is going to be expensive. That's irregardless of which one you choose.

Post by **ennui** » Wed Jul 31, 2002 6:59 pm

hurddawg wrote:it would be cheaper than buying a S15 stock tranny. Since most places won't sell just the tranny, custom work is required for the S15 stocker and the Nismo/HKS is a heavy-duty unit (more so with the HKS). I think it was $3k with driveshaft and mounting kit. I posted the info on the old forum.

Don't suppose you could re-post that? The search page for the old forums seems to be inactive and I'm interested to see what it'd cost to get a six speed. How streetable are the Nismo and HKS six-speeds?

Post by **hurddawg** » Wed Jul 31, 2002 6:59 pm

The HKS 6-speed is hella expensive. the nismo is the "affordable" one. As to streetablity, i don't know. I can post the gear ratios. I gotta run right now, so I'll post it tomorrow.

Post by **Spectre** » Wed Jul 31, 2002 6:59 pm

Daunttless wrote:Its for the SR, if you have a KA, just change bellhousings.

easier said than done

Post by **Daunttless** » Wed Jul 31, 2002 6:59 pm

This is true, but if you're looking to put in a 6 speed, obviously you don't care how easy it is. : )

Post by **Spectre** » Wed Jul 31, 2002 6:59 pm

Got any idea of how expensive it would be?

Post by **Daunttless** » Wed Jul 31, 2002 6:59 pm

I"m pretty sure its several thousand just for the 6 speed, then you need a driveshaft and differential, assuming it all bolts up and what not. It would cost the same as having your transmission replaced + any custom work that needed to be done.

Post by **Spectre** » Wed Jul 31, 2002 6:59 pm

So much for that idea.

Post by **SlowFiveOh** » Wed Jul 31, 2002 6:59 pm

they sell a 4.60:1 rear, but damn is that short. I dont see that being very streetable, and highway driving will suck majorly. the 240's gearing is short enough as it is.

Post by **C-Kwik** » Wed Jul 31, 2002 6:59 pm

http://www.quaifeamerica.com/gears/sylvia.htm

a bit pricey, but effective. Not sure if it's streetable. I think it's probably a similar set up to what NASPORT cars use. No syncros.

Post by **TommyyJ** » Wed Jul 31, 2002 6:59 pm

Does anyone know the #'s as far as gearing for each gear on the s14's???

Post by **1991240xs** » Wed Jul 31, 2002 6:59 pm

i wish there was a good 5 speed kit like that one above for around 1200..that changed it over to no synchros....ahh i had grinding gears-

Post by **grygst76** » Wed Jul 31, 2002 6:59 pm

Nismo Sr22GT wrote:I was reading some old Muscle car book about performance, and it explained that the cheapest wayto make power is to get better gears, says that most cars might have a gearing of 3.3:1, that they multiply your torque, example, our cars have aprox 165 foot pounds of torque, multiplying that times the gearing in the stock gearing(3.3, this is just an example), we are actually applying 544.5 of torque, and that there are exchangable gears and are relatively inexpensive, around 100 bucks, to say, get gears that are 4.3,which would give 709.5 foot pounds of torque to the ground, does anyone know if this only applies to american muscle cars? or does it apply to us too? if so, this would be a great way to get alot more power by switching gears, the book also explained that anything more than 4.50 gears would have to be drag strip only with slicks bcs your tires would just spin, ud loose traction, i hope i made sense, any input would be greatly appreciated. Thanks

you are on to something but remember something else as well, Old muscle cars had 2 speed and 3 speed trannies so they had the ratio's pretty high but when you throw a 5 speed or 6 in the mix you lose a lot of that ratio. Yes going to steeper gears will give you the feeling of a lot of torque but it stays the same and also the higher you go the less top you have, would you want to be doing 60 on the highway and be at 5500 rpm's? You have to match rpm with gear changes. Our cams are out of juice at around 5700rpm's and you would need a cam that pulls to 7000 so you wont be taching out on the highway, but then with such an aggressive cam you would not want to daily drive it due to your engine shaking and the also the car and having jack sprat for low end torque; so bad that by the time you get into the power of the cam you're at a red light again, believe me my camaro is built for drag but I have 3.42 gears in it. I blast the quarter in 10 seconds but on the street by the time I get to my power band (3000-7000)I'm at a red light. It's fine if you never want to go on trips or highway drives. also forgot to add gears are not 100.00 they are close to 300.00 plus installation is around the same take the 600.00 and invest it towards a turbo or nitrous.

Post by **technoman** » Wed Jul 31, 2002 6:59 pm

With all the mods I did. My car pushes 200 foot LBS of torque.Wich allowed me to burn of tires in about a month. I changed the diff in my 240 to a J30 diff. The gearing is 396 and is VLSD.this made my car seam faster and the 396 rear gear is perfectfor my set up. And my tires last longer.

Post by **grygst76** » Wed Jul 31, 2002 6:59 pm

technoman wrote:With all the mods I did. My car pushes 200 foot LBS of torque.Wich allowed me to burn of tires in about a month. I changed the diff in my 240 to a J30 diff. The gearing is 396 and is VLSD.this made my car seam faster and the 396 rear gear is perfectfor my set up. And my tires last longer.

So when you went to the strip what was your time technoman?I remember you were supposed to tell us until mr mod shut us down

Multiplying Torque

Multiplying Torque

Re: Multiplying Torque

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums