Changing Gear Ratios

wildchild4lyfe · 1st December 2009, 16:29

hey have any of you guys played with your gear ratios??
ive heard of a lot of suzukis and honda being done but any germans or americans??

Shan2nu · 1st December 2009, 17:50

Changing gear ratios takes a bit of calculations as you need to make sure you get the shortness and closeness of the ratios right for that particular engine.

Most enthusiasts just plonk in a short ratio final drive which makes the gears shorter but not closer. Even so, i've driven some cars with short FDs and the diff in acc is amazing.

Shan2nu

wildchild4lyfe · 1st December 2009, 17:52

ok now the big question... have you seen anyone do it on optras or aveos?

nitrous · 1st December 2009, 18:03

For chevrolets:
Two options for you:
1. Scout for gear ratios abroad (where the car was sold and raced) and get them.
2. Get Straight cut gears custom-made to specified ratios for a whole lot of $$$$ (read lakhs).

I don't think you'll go for option #2

wildchild4lyfe · 2nd December 2009, 10:00

hmmmm i dont think id go for that option either..i could really use help on this front.

wildchild4lyfe · 2nd December 2009, 12:52

Quote:

Originally Posted by Shan2nu

Changing gear ratios takes a bit of calculations as you need to make sure you get the shortness and closeness of the ratios right for that particular engine.

Most enthusiasts just plonk in a short ratio final drive which makes the gears shorter but not closer. Even so, i've driven some cars with short FDs and the diff in acc is amazing.

Shan2nu

my cars a 1.4 aveo its a 93.5 bhp stock.
i have an FFE,a filter,plugs cables and all that jazz..the engines pretty smooth and responsive.
its just the gear ratio thats a pain and ofcourse the weight.
im going to be running in the 1150-1450 catagory hence the need.

OFF Topic: its going for a port job next week with a TB enlargement. anything else you can think of? ecm yes and...

.anshuman · 2nd December 2009, 14:50

@wildchid- What do you want to do with the ratios? Do you find them very tall for your liking?

Shan2nu · 2nd December 2009, 15:04

Quote:

my cars a 1.4 aveo its a 93.5 bhp stock.
i have an FFE,a filter,plugs cables and all that jazz..the engines pretty smooth and responsive.
its just the gear ratio thats a pain and ofcourse the weight.
im going to be running in the 1150-1450 catagory hence the need.

Your best bet is to source a short ratio final drive. Find out what is the stock FD ratio first and then check for upgrades online.

Shan2nu

wildchild4lyfe · 2nd December 2009, 15:14

@anshuman: yes,its way too tall for my liking.its comfy to drive et all but not fun!
@Shan2nu: thanks mate!

Final Drive Ratio on aveo (1.4L DOHC) is 3.944:1

Shan2nu · 2nd December 2009, 15:47

Ok so see if you can find any FDs which have a ratio of above 4.7:1, that should do the job.

The OHC VTEC comes with a 4.058:1 FD. The most desirable upgrade in our case is 4.7:1 or 4.928:1.

Shan2nu

wildchild4lyfe · 2nd December 2009, 15:56

i know its a very technical process..could you tell me what i need to look out for?

Shan2nu · 3rd December 2009, 10:46

You can prob try and contact some Chevy tuners in the US. Honda guys get their parts from here MFactory Competition Products - Forged Transmission Components

Shan2nu

wildchild4lyfe · 4th December 2009, 10:03

the only place i can get one is from sing..the issue is that it aint tried and tested by anyone here in the country..

dhawcash · 25th November 2012, 21:46

Hi All,

I've been searching the net as well as team-BHP forums for quiet a while, but couldn't find the gear ratios for Maruti Suzuki Baleno, Esteem and Zen.

I'm planning to play around with the gearing of my Esteem Mpfi, and the various forums have given me an idea that the gear sets of the above vehicles are interchangable (not sure about the baleno unit, but sure about the zen and esteem.)

So, before i hit the streets of Meerut/ Mayapuri to buy bags full of gears, i need to be sure if the possible gear ratios would be any good.

Would be grateful if anyone can share this info.

1st December 2009, 16:29	#1
wildchild4lyfe BHPian Join Date: Nov 2009 Location: mumbai Posts: 405 Thanked: 7 Times View My Garage	Changing Gear Ratios hey have any of you guys played with your gear ratios?? ive heard of a lot of suzukis and honda being done but any germans or americans??
	() Thanks

1st December 2009, 17:52	#3
wildchild4lyfe BHPian Join Date: Nov 2009 Location: mumbai Posts: 405 Thanked: 7 Times View My Garage	ok now the big question... have you seen anyone do it on optras or aveos?
	() Thanks

1st December 2009, 18:03	#4
nitrous Senior - BHPian Join Date: May 2004 Location: UAE/Lon/Madras Posts: 6,965 Thanked: 325 Times View My Garage	For chevrolets: Two options for you: 1. Scout for gear ratios abroad (where the car was sold and raced) and get them. 2. Get Straight cut gears custom-made to specified ratios for a whole lot of $$$$ (read lakhs). I don't think you'll go for option #2
	() Thanks

2nd December 2009, 10:00	#5
wildchild4lyfe BHPian Join Date: Nov 2009 Location: mumbai Posts: 405 Thanked: 7 Times View My Garage	hmmmm i dont think id go for that option either..i could really use help on this front.
	() Thanks

2nd December 2009, 14:50	#7
.anshuman Distinguished - BHPian Join Date: Dec 2004 Location: Good-Gaon Posts: 7,763 Thanked: 11,064 Times View My Garage	@wildchid- What do you want to do with the ratios? Do you find them very tall for your liking?
	() Thanks

1st December 2009, 17:50	#2
Shan2nu Senior - BHPian Join Date: Feb 2004 Location: Hubli - Karnata Posts: 5,533 Thanked: 125 Times View My Garage	Changing gear ratios takes a bit of calculations as you need to make sure you get the shortness and closeness of the ratios right for that particular engine. Most enthusiasts just plonk in a short ratio final drive which makes the gears shorter but not closer. Even so, i've driven some cars with short FDs and the diff in acc is amazing. Shan2nu
	() Thanks

2nd December 2009, 15:14	#9
wildchild4lyfe BHPian Join Date: Nov 2009 Location: mumbai Posts: 405 Thanked: 7 Times View My Garage	@anshuman: yes,its way too tall for my liking.its comfy to drive et all but not fun! @Shan2nu: thanks mate! Final Drive Ratio on aveo (1.4L DOHC) is 3.944:1 Last edited by wildchild4lyfe : 2nd December 2009 at 15:21.
	() Thanks

2nd December 2009, 15:47	#10
Shan2nu Senior - BHPian Join Date: Feb 2004 Location: Hubli - Karnata Posts: 5,533 Thanked: 125 Times View My Garage	Ok so see if you can find any FDs which have a ratio of above 4.7:1, that should do the job. The OHC VTEC comes with a 4.058:1 FD. The most desirable upgrade in our case is 4.7:1 or 4.928:1. Shan2nu
	() Thanks

2nd December 2009, 15:56	#11
wildchild4lyfe BHPian Join Date: Nov 2009 Location: mumbai Posts: 405 Thanked: 7 Times View My Garage	i know its a very technical process..could you tell me what i need to look out for?
	() Thanks

3rd December 2009, 10:46	#12
Shan2nu Senior - BHPian Join Date: Feb 2004 Location: Hubli - Karnata Posts: 5,533 Thanked: 125 Times View My Garage	You can prob try and contact some Chevy tuners in the US. Honda guys get their parts from here MFactory Competition Products - Forged Transmission Components Shan2nu
	() Thanks

4th December 2009, 10:03	#13
wildchild4lyfe BHPian Join Date: Nov 2009 Location: mumbai Posts: 405 Thanked: 7 Times View My Garage	the only place i can get one is from sing..the issue is that it aint tried and tested by anyone here in the country..
	() Thanks

25th November 2012, 21:46	#14
dhawcash BHPian Join Date: Dec 2008 Location: jaipur Posts: 125 Thanked: 151 Times	Baleno, Esteem, Zen gear ratios Hi All, I've been searching the net as well as team-BHP forums for quiet a while, but couldn't find the gear ratios for Maruti Suzuki Baleno, Esteem and Zen. I'm planning to play around with the gearing of my Esteem Mpfi, and the various forums have given me an idea that the gear sets of the above vehicles are interchangable (not sure about the baleno unit, but sure about the zen and esteem.) So, before i hit the streets of Meerut/ Mayapuri to buy bags full of gears, i need to be sure if the possible gear ratios would be any good. Would be grateful if anyone can share this info.
	() Thanks