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 Proton PrevĂ© V14, Turbocharged Car; Supercharged Thread

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BartS
post Aug 9 2012, 01:08 PM

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QUOTE(dares @ Aug 9 2012, 01:06 PM)
Who said  blink.gif
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Post #503. Turbo charged thread.

QUOTE(ckming @ Aug 9 2012, 12:18 PM)
lets go tmr. can TT up there ma. what say u guys?
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fulat
post Aug 9 2012, 01:09 PM

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QUOTE(BartS @ Aug 9 2012, 01:06 PM)
Didn't he say tomorrow? Anyway, I'm likely going this weekend. Want to test my autofoamed chassis.
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go where? i wanna test my hyperflex too

BartS
post Aug 9 2012, 01:11 PM

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QUOTE(fulat @ Aug 9 2012, 01:09 PM)
go where? i wanna test my hyperflex too
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Genting. What's a 'hyperflex'? Mounting/Bushing ?
sanadi
post Aug 9 2012, 01:13 PM

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QUOTE(BartS @ Aug 9 2012, 12:58 PM)
Funny you should mention that. Want to discuss about Preve's torque curve. After 4K rpm the torque should dip down but the other day when I was playing with paddle shift, when I reach 5K rpm, the car suddenly had tremendous amount of pull (torque). Very much more than when it was at 4K. Had to downshift quickly as the revs were climbing too fast. Has anyone else experienced the same?
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Although max torque starts to drop off above 4000RPM, but your power is still increasing until max at 5000RPM. Above 5000RPM power drops off but not much. That's why you can still accelerate.

From the torque curve here: http://i293.photobucket.com/albums/mm76/ha...FEtruestory.jpg

I was able to calculate the power at RPM and charted a graph of torque and power.

Formula used was: Power [kW] = Torque [Nm] x Speed [1/min] / 9549
source: http://www.rri.se/index.php?DN=28#080

Attached Image

This post has been edited by sanadi: Aug 9 2012, 01:19 PM
fulat
post Aug 9 2012, 01:14 PM

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QUOTE(BartS @ Aug 9 2012, 01:11 PM)
Genting. What's a 'hyperflex'? Mounting/Bushing ?
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sound proofing like foam... but hyperflex is like stick on the the matter in order to provide sound/heat proofing

BartS
post Aug 9 2012, 01:23 PM

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QUOTE(sanadi @ Aug 9 2012, 01:13 PM)
Although max torque starts to drop off above 4000RPM, but your power is still increasing until max at 5000RPM.

From the torque curve here: http://i293.photobucket.com/albums/mm76/ha...FEtruestory.jpg
Attached Image
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Good graph. thumbup.gif

The relationship between torque/bhp between 4-5K is still somewhat a grey area for me. I always equate 'pull' to torque. At 5K, the car was behaving very differently. From 2K-4K, there's power but it's not 'seat of the pants' sensation. At 5K, it feels just like that.
dares
post Aug 9 2012, 01:24 PM

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QUOTE(BartS @ Aug 9 2012, 01:08 PM)
Post #503. Turbo charged thread.
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Oh, yea later I told him after Raya ma.
zaFrOoNaLdO
post Aug 9 2012, 01:25 PM

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QUOTE(MAGatron @ Aug 9 2012, 10:38 AM)
walaaa.... sudah ada.... cantek........ rclxms.gif
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nice! but looks alot like lancer's body kit..
sanadi
post Aug 9 2012, 01:31 PM

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QUOTE(BartS @ Aug 9 2012, 01:23 PM)
Good graph.  thumbup.gif

The relationship between torque/bhp between 4-5K is still somewhat a grey area for me. I always equate 'pull' to torque. At 5K, the car was behaving very differently. From 2K-4K, there's power but it's not 'seat of the pants' sensation. At 5K, it feels just like that.
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Think of it this way (not really accurate but rough estimation):

Torque: NM/RPM (pulling power per RPM)
Power: Torque X RPM (work done by torque times how my RPM it is repeated)

at 5000 rpm you less torque than 4000 rpm. But you are doing more of that work 5000 times vs 4000 times. Therefore you get more work done.

Or at 2000rpm: Kerja kuat tapi jarang-jarang (2000 time working)

at 5000rpm: Kerja kurang sikit tapi selalu (5000 times working)


BartS
post Aug 9 2012, 01:33 PM

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QUOTE(fulat @ Aug 9 2012, 01:14 PM)
sound proofing like foam... but hyperflex is like stick on the the matter in order to provide sound/heat proofing
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Think you're referring to 'Accumat Hyperflex', sound dampening mats. Are they any good against the high pitch whine of the CVT?


Added on August 9, 2012, 1:35 pm
QUOTE(sanadi @ Aug 9 2012, 01:31 PM)
Think of it this way (not really accurate but rough estimation):

» Click to show Spoiler - click again to hide... «

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Thank you for your explanation. Don't think I'll be revisiting 5K rpm too soon. Car's still new. Don't want to damage it from over revving.

This post has been edited by BartS: Aug 9 2012, 01:35 PM
fulat
post Aug 9 2012, 01:35 PM

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QUOTE(BartS @ Aug 9 2012, 01:33 PM)
Think you're referring to 'Accumat Hyperflex', sound dampening mats. Are they any good against the high pitch whine of the CVT?
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not accumat. other japanese brand. and not sound dampening only... heat isolator too. that s why i wanna know how u test your foam. i wanna follow test my hyperflex

WilsonCheah
post Aug 9 2012, 01:41 PM

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QUOTE(fulat @ Aug 9 2012, 01:35 PM)
not accumat. other japanese brand. and not sound dampening only... heat isolator too. that s why i wanna know how u test your foam. i wanna follow test my hyperflex
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Is this the MYR 800++ u just DIY to ur car last weekend?
BartS
post Aug 9 2012, 01:48 PM

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QUOTE(fulat @ Aug 9 2012, 01:35 PM)
not accumat. other japanese brand. and not sound dampening only... heat isolator too. that s why i wanna know how u test your foam. i wanna follow test my hyperflex
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I don't have a db meter. So this has to be a test from your own ears. Rather than I badly explain about autofoam, here are some links ...
» Click to show Spoiler - click again to hide... «




This post has been edited by BartS: Aug 9 2012, 01:51 PM
fulat
post Aug 9 2012, 01:53 PM

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QUOTE(WilsonCheah @ Aug 9 2012, 01:41 PM)
Is this the MYR 800++ u just DIY to ur car last weekend?
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wah... where got RM800++ so expansive?

QUOTE(BartS @ Aug 9 2012, 01:48 PM)
I don't have a db meter. So this has to be a test from your own ears. Rather than I badly explain about autofoam, here are some links ...
» Click to show Spoiler - click again to hide... «

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nevermind.. i just wanna see u all go where test the engine... by pumping the speed up i will know the sound proofing working for my fender side and wheel arch side or not.


WilsonCheah
post Aug 9 2012, 01:55 PM

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QUOTE(fulat @ Aug 9 2012, 01:53 PM)
wah... where got RM800++ so expansive?
nevermind.. i just wanna see u all go where test the engine... by pumping the speed up i will know the sound proofing working for my fender side and wheel arch side or not.
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u mentioned it the other day ma, no?
wuhuhuhuhuh SA havent update me when can collect car. whuhuhuhuhu
fulat
post Aug 9 2012, 01:56 PM

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QUOTE(WilsonCheah @ Aug 9 2012, 01:55 PM)
u mentioned it the other day ma, no?
wuhuhuhuhuh SA havent update me when can collect car. whuhuhuhuhu
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white should have a lot la... if he dont update u. call him la... ask for what freebie from him?

u tell him... no car next week. u change SA... wahahhahaha

This post has been edited by fulat: Aug 9 2012, 02:00 PM
WilsonCheah
post Aug 9 2012, 02:10 PM

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QUOTE(fulat @ Aug 9 2012, 01:56 PM)
white should have a lot la... if he dont update u. call him la... ask for what freebie from him?

u tell him... no car next week. u change SA... wahahhahaha
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HAHA Ipoh no stock. -.- damn kanasai wan.
my own fren . haha cant blame him, i stalk his company yard daily xD
memang no white knight
nicgoh
post Aug 9 2012, 02:19 PM

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QUOTE(WilsonCheah @ Aug 9 2012, 02:10 PM)
HAHA Ipoh no stock. -.- damn kanasai wan.
my own fren . haha cant blame him, i stalk his company yard daily xD
memang no white knight
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the yard damn easy to stalk.. just beside the flyover.. i hari2 passed thru the flyover.. haha
fulat
post Aug 9 2012, 02:36 PM

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jialat... here my SA anytime can give u car.. but no white.. ready stock have black, elegant brown and silver
WilsonCheah
post Aug 9 2012, 02:37 PM

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QUOTE(fulat @ Aug 9 2012, 02:36 PM)
jialat... here my SA anytime can give u car.. but no white.. ready stock have black, elegant brown and silver
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kakaka only whiteeeeeeeeeeeeeeeeeeeeeeeee

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