[Roy]

Hi,
I have a Maruti Zen VX, 1999 model. I wish to know how can I improve upon its fuel effeciency and also add a bit of punch to the engine.
Roy

[vinsanity]

Welcome to tbhp mate!!
It'l be good if you could give a little intro about u'rself..

_Cheers_

[speedsatya]

how much fuel consumption figure do u get now..
still to be on the safe side ,you can follow the following:

drive between 45-55kph .
keep your tires properly inflated.check them every week.

even though maruti says 20k for the spark plugs,change them at 10k kms.
change your engine oil every 5kkms.

dont ride your clutch.


satya

[jesal]

Originally Posted by speedsatya

how much fuel consumption figure do u get now..
still to be on the safe side ,you can follow the following:

drive between 45-55kph .
keep your tires properly inflated.check them every week.

even though maruti says 20k for the spark plugs,change them at 10k kms.
change your engine oil every 5kkms.

dont ride your clutch.


satya

the zen master has spoken

[speedsatya]

Originally Posted by jesal

the zen master has spoken

hehe

Originally Posted by roy

..........and also add a bit of punch to the engine.
Roy

get a k&n filter.go for the stock replacement filter.it will fit directly without you requiring to do any mods.

there are a lot of things that you can do like porting,an exhaust job and many more ,but then that depends on your wallet.

but i suggest for your daily use,a k&n will be enough.
for information on mods you can contact our resident car-doctor Dr.Dom.

[islero]

hey, i read an OD article( in the "zen special" issue) that said you can fit a free-flow exahsut and tune it such that you can have better fe and very slight improvement in performance. correct me if im wrong.

[speedsatya]

yeah you are right
,many of us do have a free flow exhaust in our zens.
a free flow exhaust helps in the proper flow of exhaust gases and thus you do gain .
if driven normally ,ur FE does improve.


the free flow exhaust normally consists of the headers which are of tuned length which replace the exhaust manifold,then the expansion chamber and then the muffler.there is alot of debate on whether the cat con should be there or not.

you can go for a 4x1 exhaust and also a 4x2x1 .

the 4x1 helps in top end power delivery and so ur city driving will suffer.
the 4x2x1 helps in the lower end and mid -range .also the torque figures go up.



Automech makes them in mumbai

[Kaizer Sozay]

I have a zen 2002 Mpfi VXi, i have a k & n filter fitted, just wanted to know if i put in ngk iridium spark plugs, will i get a better mileage

[fireblade007]

When was the 60 bhp maruti zen launched? How to differentiate between euro 1 zen(50 bhp) and the euro 2 zen(60 bhp)?

[Roy.S]

Originally Posted by fireblade007

When was the 60 bhp maruti zen launched? How to differentiate between euro 1 zen(50 bhp) and the euro 2 zen(60 bhp)?

We have an Euro 1 Zen. It has a carburettor so look for a choke. The Euro 2 models are all MPFI and are considerably superior to the older carb models. In case you are buying a Zen, avoid the carb version.
I think the MPFI model with 4 valves per cylinder was launched in 2001.

[S2!!!]

Originally Posted by fireblade007

When was the 60 bhp maruti zen launched? How to differentiate between euro 1 zen(50 bhp) and the euro 2 zen(60 bhp)?

The mpfi Zen was 56 bhp and was launched in 2002 with bharat stage II norms. IIRC.

If you see the steel wheels of the mpfi they have the round holes design whereas the carb one had a 'C' kinda design. Apart from that as Roy.S mentioned the choke would be present in the carb. Also the bharat II sticker would be there near or inside the fuel tank opener. Also in the mpfi, there is no sticker on the boot under the 'ZEN' emblem saying 'MG410' and the front grille is one honeycomb unit with the 'S' logo whereas in the carb it was more like a dual grill with the 'S' on the body coloured centre.

Hope this helps.

[devrajman]

Here is a little copy-paste from a different Thread names "Zen carb model mileage" :

http://www.team-bhp.com/forum/techni...tml#post227994


The 10 commandments of good FE

1) Clean or replace the air filter
2) Make sure the wheels don't drag. If they do then get your brakes cleaned. In very old models, if there is a rumbling sound from your wheels you may need to get the bearings greased.
3) Replace engine oil every 5000-7500k.
4) Keep tyres properly inflated. Often the air pumps at the service stations are not calibrated properly. A good idea is to carry you own tyre pressure gauge. They should also be perfectly aligned and balanced.
5) Spark plugs should be clean and the gaps as per specs.
6) Get the timing checked
7) The mixture should not be too rich in carb models. You can get the CO and HC of the exhaust gases checked to make sure your mixture is right.
8) Get the Idling RPM checked. It should be as per specs.
9) Don't drive at high speed in low gears.
10) Avoid overloading the vehicle and remove anything like roof racks or fancy frills that may cause air drag.


Special for Carb models.

1) Getting the carburettor overhauled can do wonders for your FE.

2) The tuning and timing needs to be set for optimal pefromance more frequently than the standard service frequency of 5k km. So if you travel a lot get the tuning and timing checked every 3-3.5 k your payback on the investment in improved FE will be a much better than even the equity market.

[motomaverick]

I had a mpfi 2004 Zen earlier which had a kn stock replacement filter which i had bought for 2300 IIRC. The initial performance did improve as the engine was breathing well but then it wont be a rocket. Also the FE marginally increased.

I would say check your tires & pressure, maintain that properly and accelerate evenly then the FE will be good, also try and avoid sudden acceleration and braking with frequent gear changes, i know its difficult in city but with practise its achievable. I used to get around 14 which had gone down to 11 when i had sold the car, not the best of FE's

[anjan_c2007]

When the Zen was new:





That was in 1993 .....

[anjan_c2007]

Another Zen picture from the 1990's (June 1994, The Metropolis on Saturday)