[speedsatya]

Originally Posted by protege

Hey Revtech,
I got the pricol recommendation from Satya only.. the zen guru. According to him, it's really easy to fit. need to bore two holes for mounting.. and costs about Rs 800.. from his pm it seemed it's easily available everyhere.. and it doesn't have many electronics so can be callibrated easily by mechanic.. me thinks.

hahahha zen guru.
i am no guru dude,its just that i have faced similar problems ,so i can answer some more of them.hehehhe.


i have been using a Pricol tacho since day 1 in my mpfi zen.and even after 4 years its doing very well.


the fitting takes about 30 minutes and all it requires is connecting 4 wires black-ground,red -battery +,yellow -park lite so that the lite inside the tacho will glow,green coil - -ve of coil



about changing gears,the zen can do 40kph easily in 5th gear once you have the momentum.but if u floor the accelerator at 40kph in 5th gear ,the engine will knock.

[revtech]

thanx satya and one more thing will there be any cutting of the dash or something required ?? and this will work on a carb zen too right ??


Rev

[speedsatya]

yeah u have to drill a small hole on your dashboard for the wires to pass into the engine compartment.
for the wires to go into the engine bay,there is a small hole through which all the wires come into the passenger cell.and to prevent hot engine air from entering into it,there is black rubber seal.so make sure that the wires pass through them,otherwise for convenience sake,the garage guys pass the wires just by removing this seal adn anot through it.
if this is done,then your AC cooling will be affected by the hot engine air.

so remember to pass the wires through this seal.

[subodhchand]

Can someone tell me the ideal RPM for Getz to get optimal mileage. I have the Tachometer, but the manual is not clear about when to change the gears. I try and keep it below 2000 rpm most of the time. With the rising fuel prices it is important to keep the consumption to the optimum level.

Subodh

[Rice_tuner]

i'm with satya on this one...get the basic pricol one for 800 bucks....works well...have had one for 2 yrs on my zen... (after the "expensive" tach with the OVERRATED "SHIFT LIGHT" CONKED OFF in 6 months)
no alterations on the dash needed...
cheers

[Rice_tuner]

subodh... gettin a decent fuel economy depends more on how light/heavy ur foot is while driving...
if ur in 5th gear at 45Km/h and at bout 1200 revs...n u floor the pedal to get to 60, it'll consume more fuel than being at 2200 revs in 3rd gear n gettin to 60 with a slight depression of the throtle

cheers..

[GTO]

@ Steeroid

An example of mechanical over-revving would be me redlining the Vtec in 3 gear, and then having a mis-shift into 2nd instead of 4th (should go well over 10,000 rpm).

Here the revv limiter wont help since the over-revv will be supported by the drivetrain. Most probably, the result would be a blown engine.

GTO

[RX135]

Originally Posted by GTO

An example of mechanical over-revving would be me redlining the Vtec in 3 gear, and then having a mis-shift into 2nd instead of 4th (should go well over 10,000 rpm).

I remember reading in one of the posts long back (around Dec. 04), that during an accident, cousin of our T-BHPian blew up engine of Opel Astra, as he tried desperately tried "engine braking" in order to stop the car.

[kooldude]

Here the revv limiter wont help since the over-revv will be supported by the drivetrain. Most probably, the result would be a blown engine.

GTO[/quote]
hey gto is this the same in the case of carb esteems i know there is no rev limiter carb esteem but i used to take my car uptil 70 in the first gear and the car would make insane noise i dont know what rpm it is running since the rpm meter is not working so i was curious if it would have a blown engine

[Shan2nu]

those maruti guys tell me to put 3rd at 20kmph and 4th at 40 kmph and fifth at 45 kmph...

do you think its possible with those long gear ratios, unless i want some bullock cart to overtake me..

Our Wagon R is pretty comfortable at those speeds, in those gears. 45kmph in 5th is around 1500 rpm (which is fine).

Shan2nu

[Shan2nu]

An example of mechanical over-revving would be me redlining the Vtec in 3 gear, and then having a mis-shift into 2nd instead of 4th (should go well over 10,000 rpm).

More like 10,890 rpm.

Shan2nu

[v1p3r]

I don't understand why the limiter won't kick in on a mechanical over-rev. Can someone please explain how it gets bypassed?

[Shan2nu]

I don't understand why the limiter won't kick in on a mechanical over-rev. Can someone please explain how it gets bypassed?

Didn't get that. On the Vtec, the limiter kicks in everytime the revvs cross 7100 rpm.

Shan2nu

[Steeroid]

Originally Posted by Shan2nu

Didn't get that. On the Vtec, the limiter kicks in everytime the revvs cross 7100 rpm.

Shan2nu

So how is it possible to hit 10,000 rpm and blow an engine? I get cut off at 7K.

[Shan2nu]

So how is it possible to hit 10,000 rpm and blow an engine? I get cut off at 7K.

Well, firstly we haven't tried downshifting a Vtec into 2nd at 150-155kmph (redline in 3rd). It was just a therotical explaination.

The limiter has to kick in at 7100 rpm (no matter what). What really kills the engine is the revvs it gains when you down shift to 2nd at 150kmph.

The limiter only stops fuel supply to the engine after 7100 rpm. When you red line while accelerating, there isn't much decelerating load on the engine, since your speed is still within the max speed allowed in that gear.

But down shifting to 2nd at 150kmph puts tremendous load on the engine which is forced to keep revving even though the fuel supply is cut off. The limiter only works when engine revvs are supported by fuel supply, in this case it's the velocity of the vehicle that's causing the overrevv and that can/will damage the engine.

Shan2nu