4G15 Gearbox n Ratio

devraj

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Hi Sifu Sifu out there....

need an advise on this... i'm using 4g15 engine with original gearbox from 4g13.
I found that when im running on 110km/h the RPM is hitting to 4.5 - 5..

is there anything i can do? can i use any other gearbox to reduce the ratio?
advise what i can do? what wil b the positive n negative if i change the g/box
 

SkYwAlKeR

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change ur final gear ratio... but that will be costly...
there is a reason for such high rpm... 4g15 isnt a powerful engine... it needs close gear ratio to extract the best power out of ur engine...
 

devraj

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so what i can do about my gearbox lah? i dont wanna change engine again lah... money matters..... what i can wit wat m having now?
 

cipan_supercas

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devraj said:
Hi Sifu Sifu out there....

need an advise on this... i'm using 4g15 engine with original gearbox from 4g13.
I found that when im running on 110km/h the RPM is hitting to 4.5 - 5..

is there anything i can do? can i use any other gearbox to reduce the ratio?
advise what i can do? what wil b the positive n negative if i change the g/box
Proton 1.3 and 1.5 have exactly the same gear ratios. I suspect that you have slipped your clutch or your tachometer and speedometer are not reporting correctly.
 

MiOKu

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cipan_supercas said:
Proton 1.3 and 1.5 have exactly the same gear ratios. I suspect that you have slipped your clutch or your tachometer and speedometer are not reporting correctly.
i think so also...
 

devraj

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Then what is the reading supposed to be in my speedometer of tachometer?
 

putra4767

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i have a wira 4g15p... i feel it's very good oledy bro compared to 4g13...which is
kinda sluggish i feel for a wira...Iswara is ok coz it's lighter
 

SkYwAlKeR

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iswara with 4g15 is ok....
but final drive rpm is kinda high... not good if u are using noisy muffler or if u wanna save fuel in long distance drive....
 

devraj

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4g13p ya correct u can get 3.5-4rpm when u hitting 110-120....
but im talking about 4g15p with 4g13p gearbox.....

4g13p and 4g15p is same gearbox for 100%?? or is there any slight diffrences? if yes pls let know.....by technically or in mechanically

so sifu sifu all telling ...that its on right condition is it? so i supposed not to worry about the ratio isit?
 

ky_fei

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change to 1.6 or 1.8 final drive , 4.2 sumthing
then u can cruise highway without worries, but if u plan to drive normally, stick to the same final drive ratio. =) coz converting final drive ratio gonna cost , not a bomb, but at least, it burn holes in ur wallet
 

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