engine balancing and lightening engine

[kenzui]

hi sifus n zthians..ive been reading the whole day on how to mod 4g93..damn blur now..hehe..im really clueless now n i really hope someone could help me out..really appreaciate ur help..hehe..what i read earlier on was how to build 4g93 na..its a really old thread..most of them said to do porting la,balancing la,lightening la and blueprint..im really new to all this..could someone explain to me??thanks alot in advance..i got a second hand satria gti n the previous owner did the exhaust system n engine grounding kit already n i just added in an open pod air filter..thats all..what can i do the gain more hp and top speed..hehe..but i use the car daily..thanks again guys

 

[zac]

There is lots of info about porting/balancing/blueprinting, try use the search function... and most of the info can be found in sticky area... browse it first, then only further discuss on things that you not sure... : )

 

[contreasjun27]

USJ 1 there is a shop call nasty port flow where they can do a very good engine balancing, overhaul, balancing and porting as well..

 

[joe_mirage]

For starters, i think the best way to start are to touch on intake and exhaust parts. if u wanna do engine balancing, i recommend you to do it when u decided to overhaul ur engine.

 

[lozo]

cams and standalone

 

[just4z]

easy way stanby 10k+++ go to powerzone . hard way read all the forum ask around and dicide .

 

[zac]

Silly way to spend hard-earned money--dun bother to know what is it just pay for the sake of owning it...

smart way to spend hard-earned money--understand it, evaluate it and only dig out money when necessary...

i had been a fool for quite sometimes, you sure you wanna follow the easy track?? hoho

 

[joe2d]

hi sifus n zthians..ive been reading the whole day on how to mod 4g93..damn blur now..hehe..im really clueless now n i really hope someone could help me out..really appreaciate ur help..hehe..what i read earlier on was how to build 4g93 na..its a really old thread..most of them said to do porting la,balancing la,lightening la and blueprint..im really new to all this..could someone explain to me??thanks alot in advance..i got a second hand satria gti n the previous owner did the exhaust system n engine grounding kit already n i just added in an open pod air filter..thats all..what can i do the gain more hp and top speed..hehe..but i use the car daily..thanks again guys

Easiest way to get more power is turbocharge ur car, simple stage 1 with bolt-on turbo, ECU & airfilter + exhaust. A simple kit like this can gain approx. 30-40% more power & since a smaller turbo is used the turbo-lag should be minimal & mid-high end power dramatically improved.

But since you asked about na tuning ok here goes,

Porting
Is to mill & polish any imperfection on the engine intake & exhaust port, giving smoother air flow thus enhance performance. Works great for turbo & na cars but quite labour expensive for the performance you get. Since Japanese engine intake & exhaust port nowadays are already very good only very little performance can be gained. Expect better throttle response, revvier engine & a little more hp.

Balancing
Usually done after lightening or changing the engine internals, shave off counter weight on crankshaft or tuning counter balance shaft to achieve perfect balance. The theory is simple, better balanced crankshaft => less vibration => higher rev achieve => more HP. Not recommended for original engine internals cause original internals are heavier & not as durable as forged internals. Which means original internals can't rev high without breaking apart so no point in balancing them.

Lightening
Swapping original engine internals (pistons, con-rod, crankshaft) for lighter, tougher parts. Lighter & tougher parts means the internals can gain or lose revs faster, able to rev higher & more durable than standard parts (if properly tuned). Expect free revving engine & 'jerky' on-off throttle. Great for racing but not easy to drive on normal road.

Blueprinting
Re-spec the engine to your needs. Original engine specs (eg. piston gap, valve clearance) is designed to allow better tolerance & durability. Blueprinting is to tighten or loosen all those gaps in the engine to suit the driver needs. Example skimming the block to get tighter valve clearance for higher compression. This is done to squeeze every last drop of performance out of the engine & usually done for racing, for normal drivers & normal cars its just overkill.

All these tuning you mentioned are just very expensive & in the end the power you gain is probably not alot more than a simple bolt-on turbo.

 

[LittleWhiteWagon]

Just jumping in the thread, a fully built NA car vs a bolt-on-turbo, which would be more reliable to run in the long run?

Say youre a heavy footed driver, loves to drive fast whenever... Im just wondering

 

[joe2d]

Just jumping in the thread, a fully built NA car vs a bolt-on-turbo, which would be more reliable to run in the long run?

Say youre a heavy footed driver, loves to drive fast whenever... Im just wondering

If well taken care of, a bot kit will be more reliable cause it doesn't stress the engine as much as high level of NA tune. A simple turbo kit adds work load on a stock engine but high level of NA tune will push the engine to the limit. But of course the feel of both tune will be different, cause a turbo charged car will never be as precise & responsive as a NA tuned car.

 

[SkYwAlKeR]

i would rather take NA...

 

[DanzEterna]

yeah, i would choose NA as well, less hassle.

 

[xtremeleo]

there are ways to make any charged car to perform as responsive as an na, and wud be as reliable as any na if taken care driven sensibly. sensibly doesnt mean u have to drive like a granma, lol.

i have both, a charged charade4e and an iswara 4g91 na. even though the 4e is much faster and more fun to drive, i luv both of them. it boils down to self preference imo

 

[xbalance2002]

easy way stanby 10k+++ go to powerzone . hard way read all the forum ask around and dicide .

wah 10k+++ go POWERZONE i think u they over charge.... a friend of mine he send this engine to oversea (i think AUS racing engine tuner) for engine mod and he told me labour charge about 3k+++

 

[joe2d]

there are ways to make any charged car to perform as responsive as an na, and wud be as reliable as any na if taken care driven sensibly. sensibly doesnt mean u have to drive like a granma, lol.

I agree that turbo can be as reliable as na if well taken care, but still i don't feel turbo can be as precise & responsive as na tune. I've driven some 1 else MR2 turbo, very well tuned, very little lag & the power come in smoothly but firmly & very easy to control. But still it just doesn't feel as direct as a well tuned na car, in a well tuned na its as if your foot is directly linked to the throttle.

And for guys who think na is easier to tune than turbo & less of a hassle, well you'll be surprised on how much work (and money) needed to get the perfect setup.

 

[LittleWhiteWagon]

If well taken care of, a bot kit will be more reliable cause it doesn't stress the engine as much as high level of NA tune. A simple turbo kit adds work load on a stock engine but high level of NA tune will push the engine to the limit. But of course the feel of both tune will be different, cause a turbo charged car will never be as precise & responsive as a NA tuned car.

Haha I get the part about the NA constantly being stressed due to the higher compression and revving, but a bolt on turbo... if its on boost doesnt it give unessecary stress to the engine also?

Knyways i've driven a few turbo cars, haha thanks for pointing out how they feel . Cuma tau beli tapi tak tau maintain~~

 

[joe2d]

Haha I get the part about the NA constantly being stressed due to the higher compression and revving, but a bolt on turbo... if its on boost doesnt it give unessecary stress to the engine also?

Knyways i've driven a few turbo cars, haha thanks for pointing out how they feel . Cuma tau beli tapi tak tau maintain~~

Even when on boost a simply bolt on would not stress out the engine too much, unless you boost it too much. Another thing is turbo boost the mid range performance better than na, so in most driving situation u don't need 2 push the engine constantly. NA tuned car on the other hand needs 2 be pushed constantly 2 get good performance cause all the power is at the top end. Again putting more stress on the engine.

 

[93na]

And for guys who think na is easier to tune than turbo & less of a hassle, well you'll be surprised on how much work (and money) needed to get the perfect setup.

this is so true.......

 

[contreasjun27]

And for guys who think na is easier to tune than turbo & less of a hassle, well you'll be surprised on how much work (and money) needed to get the perfect setup.

this is so true.......

NA need alot of time and effort to make it perfect..
but turbo also very difficult as well

 

[93na]

prefer na... but bot has blow off ha ha ha.......... no la i think depands on driver as for me is always been na... had done bot on my previous ride a putra, was no so happy bout it...... had lots of problem......