Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 23rd March 2007, 14:15   #1
BHPian
 
mtnrajdeep's Avatar
 
Join Date: Feb 2006
Location: Bangalore
Posts: 648
Thanked: 88 Times
Default What is the max speed in each gear for a carb zen

Hi Guys

I was trying to push my zen to the max possible speed in second gear and was surprised when the speedo crossed 60 kmph as I thought that the max in 2nd would be around 40. Has anyone tried maxing their carb zen's in each gear? If so, what is the max speed in each gear for the carb version? and what is the difference in these speeds for the mpfi version?

Rajdeep
mtnrajdeep is online now   Reply With Quote
Old 23rd March 2007, 15:49   #2
Senior - BHPian
 
kpzen's Avatar
 
Join Date: Oct 2004
Location: Faridabad
Posts: 5,545
Thanked: 1,598 Times
Default

1st can do 40kmph..!!
2nd gear can do 80kmph..!!!
But why do u want to do this ?
kpzen is offline   Reply With Quote
Old 23rd March 2007, 16:05   #3
Senior - BHPian
 
revtech's Avatar
 
Join Date: Nov 2004
Location: Bombay
Posts: 1,988
Thanked: 35 Times
Default

ive done ...

1st gear 40 kmph
2nd gear 80 kmph
3rd gear 110 kmph
4th gear 135 kmph
revtech is online now   Reply With Quote
Old 23rd March 2007, 17:15   #4
BHPian
 
mtnrajdeep's Avatar
 
Join Date: Feb 2006
Location: Bangalore
Posts: 648
Thanked: 88 Times
Default

Quote:
Originally Posted by kpzen View Post
1st can do 40kmph..!!
2nd gear can do 80kmph..!!!
But why do u want to do this ?
The car does not cross 110-120 kmph in 5th gear on the highways....got everything checked at an authorised service center and it is fine. So checking out if the engine is able to reach the max speed in atleast every gear
mtnrajdeep is online now   Reply With Quote
Old 23rd March 2007, 17:36   #5
Team-BHP Support
 
moralfibre's Avatar
 
Join Date: Dec 2004
Location: MH-12
Posts: 6,622
Thanked: 6,144 Times
Default

Quote:
Originally Posted by mtnrajdeep View Post
The car does not cross 110-120 kmph in 5th gear on the highways....got everything checked at an authorised service center and it is fine. So checking out if the engine is able to reach the max speed in atleast every gear
Which year model is this? Carb or MPFi?
moralfibre is offline   Reply With Quote
Old 23rd March 2007, 17:43   #6
BHPian
 
navdeep's Avatar
 
Join Date: Sep 2006
Location: Pune
Posts: 885
Thanked: 4 Times
Default

Quote:
Originally Posted by moralfibre View Post
Carb or MPFi?
Title of the thread says *Carb*
navdeep is offline   Reply With Quote
Old 23rd March 2007, 17:54   #7
BHPian
 
mtnrajdeep's Avatar
 
Join Date: Feb 2006
Location: Bangalore
Posts: 648
Thanked: 88 Times
Default

Quote:
Originally Posted by moralfibre View Post
Which year model is this? Carb or MPFi?
It is a 98 model Carb Zen only!
mtnrajdeep is online now   Reply With Quote
Old 23rd March 2007, 17:56   #8
Senior - BHPian
 
kpzen's Avatar
 
Join Date: Oct 2004
Location: Faridabad
Posts: 5,545
Thanked: 1,598 Times
Default

Quote:
Originally Posted by mtnrajdeep View Post
The car does not cross 110-120 kmph in 5th gear on the highways....got everything checked at an authorised service center and it is fine. So checking out if the engine is able to reach the max speed in atleast every gear
A normal good zen carb engine should reach 110 easily....Time to get a good service i guess...
Try 4th gear at that speed..!!
kpzen is offline   Reply With Quote
Old 23rd March 2007, 18:00   #9
BHPian
 
mtnrajdeep's Avatar
 
Join Date: Feb 2006
Location: Bangalore
Posts: 648
Thanked: 88 Times
Default

Quote:
Originally Posted by kpzen View Post
A normal good zen carb engine should reach 110 easily....Time to get a good service i guess...
Try 4th gear at that speed..!!
I tried this immediately after a service only. I usually shift up to 5th at about 60kmph and then am only in 5th throughout. Havent tried being accelerating to higher speeds in lower gears till now. Will try to check this out sometime
mtnrajdeep is online now   Reply With Quote
Old 23rd March 2007, 18:28   #10
Senior - BHPian
 
humyum's Avatar
 
Join Date: Feb 2006
Location: Leicester/Mumbai
Posts: 2,306
Thanked: 2,188 Times
Default

4th gear have tried 130 in a battered zen with worn bearings/suspension+steering..so i m soo sure a good condition carb zen will atleast reach 140 as a top speed..!!
humyum is offline   Reply With Quote
Old 23rd March 2007, 19:08   #11
Senior - BHPian
 
drifter's Avatar
 
Join Date: Sep 2004
Location: Bombay
Posts: 1,469
Thanked: 13 Times
Default

In 5th you will not achieve top speed, the gear is for cruising. Use 4th gear for top speed. You will notice, if you were doing 140, the minute you shift to 5th, your speed would drop.

Drifter
drifter is offline   Reply With Quote
Old 23rd March 2007, 19:13   #12
Senior - BHPian
 
DCEite's Avatar
 
Join Date: Sep 2004
Location: NCR
Posts: 3,045
Thanked: 476 Times
Default

Quote:
Originally Posted by drifter View Post
In 5th you will not achieve top speed, the gear is for cruising. Use 4th gear for top speed. You will notice, if you were doing 140, the minute you shift to 5th, your speed would drop.
How is it different for a Diesel vehicle? For example I read somewhere that Swift VDi top speed is achieved in 5th gear, not in 4th.
DCEite is offline   Reply With Quote
Old 23rd March 2007, 19:27   #13
Senior - BHPian
 
drifter's Avatar
 
Join Date: Sep 2004
Location: Bombay
Posts: 1,469
Thanked: 13 Times
Default

Its got to do with the torque characteristics of diesels. They produce higher amount of torque than similar capacity petrols.

Yup you probably read it correct about the swift ddis. Even my accent crdi achieved its top speed in 5th gear.

Drifter
drifter is offline   Reply With Quote
Old 23rd March 2007, 19:58   #14
Senior - BHPian
 
Join Date: Jun 2004
Location: Navi Mumbai
Posts: 1,040
Thanked: 127 Times
Default

have been doing 145kmph in 4th regurlarly on a stock carb zen...just waiting to see how she responds to basic mods.
heavy_foot is offline   Reply With Quote
Old 24th March 2007, 10:26   #15
SLK
Senior - BHPian
 
SLK's Avatar
 
Join Date: Feb 2004
Location: DL XX XX XXXX
Posts: 1,290
Thanked: 185 Times
Default

Quote:
Originally Posted by drifter View Post
Its got to do with the torque characteristics of diesels. They produce higher amount of torque than similar capacity petrols.

Yup you probably read it correct about the swift ddis. Even my accent crdi achieved its top speed in 5th gear.
If I am not wrong, even the NHC does its top in 5th.... again b'coz the peak power comes in quite early at 5000rpm (more like diesel) though the revv limit remains at 6000rpm.

And about the zen in question here.... i don't think it would serve any purpose pushing the car in every gear, because it would always meet those benchmarks. As the case seems there is a marginal loss of power and it would be only evident in 4th and 5th gears.

Moreover, I assume this 110-120km/h in the 5th gear was done only with one person aboard, b'coz with something like 4-5 people 120km/h is ok for that car.
SLK is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Proposal: Each RTO Officer can issue max of 20 driving licences per day darklord Street Experiences 10 29th February 2016 17:53
Renault-Nissan's Chennai factory running at max speed DukeNukem The Indian Car Scene 6 7th July 2012 11:02
Max speed on Splendor rkavthekar Motorbikes 5 8th September 2008 15:04
M800 5 Speed or Zen Carb dj_2006 Hatchbacks 12 29th March 2007 14:07
99'ZEN carb to ZEN mpfi.... Balram Modifications & Accessories 17 10th December 2006 09:04


All times are GMT +5.5. The time now is 16:40.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks