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 Lightened Crankpully / Lightened crankshaft, Come and discuss

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shinjite
post Nov 19 2009, 11:17 PM

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Aiyo, this debate will never end XD
allankoh007
post Nov 21 2009, 12:57 PM

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QUOTE(m|ng @ Mar 13 2007, 09:38 AM)
Anyone here fitted a lightened crankpulley or crankshaft in your car?
If Yes, how much effect doest it make?

This crankpulley is the part where you fit your Timing belt if im not mistaken?
and the Crankshaft is the thing that controls you car's valve timing?

Plan to do it on my car, But dont know how much would it cost, or how adverse the effect be. And most importantly, do you need to modify your intake/exhaust system after these mods? As you are pumping more power out of your engine?

As many people will normally go for Air-filters and Exhaust, This is internal engine Mod stuff  biggrin.gif
*
Good Day,
My long previous car of Proton Iswara Sedan 1.3 S , year 1996. Bought 2nd hand in year 2002. I modified the cam pully and crankshaft to an adjustable type. Spent Rm 2 K ++ for all the modification. Firstly, i fully overhaul the engine and replace all the gasket and oil seal to accomodate higher pressure and output. The result is impresive power output and lower fuel consumption. The Power output that time i can even win race between Peugeot 306 from Johor to K.L. maximum top speed i ever tried is 180 km/h ++ coz that's the limit my speedometer is.

Exhaust system changed to 4 to 1 extractor . Distributor i put additional cooper internally the unit to boost power output but the plug cable remain the same. Absorber Kayaba original only + sport spring. Tyres 15" with Proton Waja rim. Front brake modified to accomodate Proton Perdana V6 brake system . Rear maintain original.


Drive about less than 4 months, i sold of the car. Reason, bored already due to high maintenance for an old car. All the rubber seal, power window, and air cond all spoilt. Worst, my rear bonnet use to fill up with water due to leakage and poor design of the car.

Currently, owned 2 cars. Proton Waja Campro 1.6E, year 2007 and Nissan Sentra N16 1.8 XG-L , year 2007. All genuine original. More than sufficient.
Mayor
post Nov 23 2009, 10:25 AM

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Lightened Crankpully / Lightened crankshaft + VTEC = smile.gif
tofu
post Nov 24 2009, 10:50 AM

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QUOTE(allankoh007 @ Nov 21 2009, 12:57 PM)
Good Day,
    My long previous car of Proton Iswara Sedan 1.3 S , year 1996. Bought 2nd hand in year 2002.  I modified the cam pully and crankshaft  to an adjustable type. Spent Rm 2 K ++ for all the modification.

    Exhaust system changed to 4 to 1 extractor . Distributor i put additional cooper internally the unit to boost power output


allo there, mind elaborating more on the adjustable 'crank pulley'?


ssdemon
post Jul 7 2010, 07:37 PM

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guys, need abit of clarification here...

i saw some mytheology crank pulley... but got silver,gold color.
Whats the difference between the silver and gold?

i read some forums saying dat going up genting will be harder after installation. could you pls shed some light on this? i asked my mechanic, he say it won't affect plk. yes or no?

thanx

rakyat
post Jul 8 2010, 09:12 AM

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QUOTE(tofu @ Nov 24 2009, 10:50 AM)
allo there, mind elaborating more on the adjustable 'crank pulley'?
*
I think no adjustable 'crank' pulley; adjustable would be 'cam' pulley
maddriver
post Jul 8 2010, 09:12 AM

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no difference between the color, in fact, going up genting is much more fun with the lcp.......
the_catacombs
post Jul 8 2010, 12:55 PM

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QUOTE(allankoh007 @ Nov 21 2009, 12:57 PM)
Good Day,
    My long previous car of Proton Iswara Sedan 1.3 S , year 1996. Bought 2nd hand in year 2002.  I modified the cam pully and crankshaft  to an adjustable type. Spent Rm 2 K ++ for all the modification. Firstly, i fully overhaul the engine and replace all the gasket and oil seal to accomodate higher pressure and output. The result is impresive power output and lower fuel consumption. The Power output that time i can even win race between Peugeot 306 from Johor to K.L. maximum top speed i ever tried is 180 km/h ++ coz that's the limit my speedometer is.

    Exhaust system changed to 4 to 1 extractor . Distributor i put additional cooper internally the unit to boost power output but the plug cable remain the same. Absorber Kayaba original only + sport spring. Tyres 15" with Proton Waja rim. Front brake modified to accomodate Proton Perdana V6 brake system . Rear  maintain original.
  Drive about less than 4 months, i sold of the car. Reason, bored already due to high maintenance for an old car. All the rubber seal, power window, and air cond all spoilt. Worst, my rear bonnet use to fill up with water due to leakage and poor design of the car.

  Currently, owned 2 cars. Proton Waja Campro 1.6E, year 2007 and Nissan Sentra N16 1.8 XG-L , year 2007. All genuine original. More than sufficient.
*
how u modify ur crankshaft to adjustable type??...
how u put additional cooper inside ur distributor??...

unsure.gif unsure.gif
ssdemon
post Jul 8 2010, 04:47 PM

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QUOTE(maddriver @ Jul 8 2010, 09:12 AM)
no difference between the color, in fact, going up genting is much more fun with the lcp.......
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maddriver, wat do u mean by fun?

shinjite
post Jul 8 2010, 04:57 PM

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faster revving...
eddyann
post Jul 9 2010, 03:06 PM

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correct me if I'm wrong. even if we lightened the crank pully and something else even by a massive 20kg of weight reduction, isn't that the car weight itself (more than 1000kg) will give the momentum/inertia (what ever u call it) to make the car keep on moving if we take our feet off the accelerator?

This post has been edited by eddyann: Jul 9 2010, 03:06 PM
the_catacombs
post Jul 10 2010, 11:38 AM

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QUOTE(eddyann @ Jul 9 2010, 03:06 PM)
correct me if I'm wrong. even if we lightened the crank pully and something else even by a massive 20kg of weight reduction, isn't that the car weight itself (more than 1000kg) will give the momentum/inertia (what ever u call it) to make the car keep on moving if we take our feet off the accelerator?
*
wrong... when u use LCP, u lightened the angular momentum of ur rotating crankshaft... not lightening the kerb weight of ur car... whenever we revs up, the engine requires more power to spin the rotating crank due to heavier momentum... by lightening it, this reduces parasitic drag of it...
h4dRi
post Jul 10 2010, 11:44 AM

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QUOTE(the_catacombs @ Jul 10 2010, 11:38 AM)
wrong... when u use LCP, u lightened the angular momentum of ur rotating crankshaft... not lightening the kerb weight of ur car... whenever we revs up, the engine requires more power to spin the rotating crank due to heavier momentum... by lightening it, this reduces parasitic drag of it...
*
i assume what he said is that even with LCP the rev will not going down faster than without LCP when the car move in gear

This post has been edited by h4dRi: Jul 10 2010, 11:57 AM
the_catacombs
post Jul 10 2010, 02:45 PM

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QUOTE(h4dRi @ Jul 10 2010, 11:44 AM)
i assume what he said is that even with LCP the rev will not going down faster than without LCP when the car move in gear
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because the weight difference is too minor to feel any significant difference... try lightening ur flywheel 1kg or more... surely u can feel the difference...
eddyann
post Jul 12 2010, 12:46 PM

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QUOTE(the_catacombs @ Jul 10 2010, 11:38 AM)
wrong... when u use LCP, u lightened the angular momentum of ur rotating crankshaft... not lightening the kerb weight of ur car... whenever we revs up, the engine requires more power to spin the rotating crank due to heavier momentum... by lightening it, this reduces parasitic drag of it...
*
i know the LCP will is not meant for lightening the kerb weight of the car, but during the gear being engaged and we take our feet off the accelerator, does the car really stop much faster than normal one? because the car weight itself got a huge mass (1000++kg) so still got alot of momentum to keep it running for a while.

Unless, we disengage the gear, then it should feel likes the rev will easy to climb and easy to drop as well.
What do you think?
tofu
post Jul 23 2010, 03:19 PM

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dont worry revs wont drop too fast

currently using a mythelogy one for the 4g15

according to the gtech pro, i got gains almost all over the powerband, more so in the lower to middle range

about 5 hps in the midrange and not much difference up top

this means better drivability

no downsides so far, cheers

sky_haunter
post Jul 26 2010, 09:52 PM

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how bout going uphill?
shinjite
post Jul 26 2010, 09:55 PM

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No problems uphill as well smile.gif
Joseph Hahn
post Jul 28 2010, 03:07 PM

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Why people worry about going uphill? Don't have any problem with mine. ._.
evangelion
post Jul 28 2010, 10:52 PM

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Got somebody can inform how many weight for new/upgrade version of Mythelogy lighten crank pulley for Wira 1.5 SVDO?

How many weight for stock crank pulley of Wira 1.5 SVDO?

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