Modding A 4g93 N/A Engine...Give ur comments pls ppl

[dolly]

if you've seen the stock crank pulley there are actually bits of rubber, this guy is important since it will damp out vibrations on ur crank. Without this you risk causing extra wear on your bearings and other nasty damage :)

 

[potssum]

so do you use this lighten crank pulley?? hows does it feel? does this lighten flywheel have this bits of rubber?... tq for sharing :)

 

[satria81]

if you've seen the stock crank pulley there are actually bits of rubber, this guy is important since it will damp out vibrations on ur crank. Without this you risk causing extra wear on your bearings and other nasty damage :)

thanks,only now i know actually...all this while ive heard ppl saying this n that ...bla bla bla....ive just checked with a buddy n he's aftermarket lightened c/pulley has no rubber..i think its best to stay with stock c/pulley to be off unwanted known trouble's

 

[whatdamn]

bro,

i was thinking of this just bcos i felt the lack of power seriously,i tot by a proper tune up id gain some extra feel on the pedal.Im blur on the meaning of"risk running into detonation",pls help on this...otherwise...thanks so much for helping.

detonation in an engine is caused by an increase in pressure causing the fuel/air to combust without the help of the spark from the spark plug.

i'm sure you know that if the pressure increases in a rigid vessel, the boiling temp decreases right? according to PV=RT which is the ideal gas equation. so for P (pressure) to increase, T (temperature) has to decrease. which is why the compression ratios are usually left alone if you're running stock cause the higher the ratio, the higher the chance of 'knock' or detonation occuring.

improper timing adjustments will also have an effect i guess, because you're either letting the combustion happen wayyyyy too soon or wayyyyyy to slow. thus screwing up the pistons reciprocation (is that a word?).

 

[Engine_Maniac]

4g93

Haiyo Satria 81 belum habis kah!!!!!!!!!!!!!!!

Quote:
Originally Posted by satria81
could anyone rougly brief on the function of retard and advance in the distributor tuning...thnx

Quote:
Originally Posted by Engine_Maniac
Advance and retard is the firing timing for ignition.Advance would be firing before TDC and retard would be firing after TDC.
This is best to be done by a mechanic who knows what he is doing in the first place.Reason being when it is advanced the initial power would be very responsive but there would be side effect.Pinking would be produced during high speed due to limited/pre ignition fuel.When the distributor is retarded knocking would be produced due to post ignition.
How skilful is the mechanic can be evaluated after this adjustment.
Advantages of this precisely adjustment is good fuel consumption,smoothness and early morning you start the engine you should be able to see vapours coming through your exhaust!



from page 4 of this forum

 

[pinkdotdesigns]

dude's wanna ask a lil question here.

Do you think a 4g93 frm GTI got anychance to tarpau a toyota starlet 1.3turbo manual? lets say both engine's are 100% stock.

 

[CARENT]

dude's wanna ask a lil question here.

Do you think a 4g93 frm GTI got anychance to tarpau a toyota starlet 1.3turbo manual? lets say both engine's are 100% stock.

Bro,

I think can, but a stock 4G93 may not be tuned properly. It depends very much on the settings for cam pulley. :)

 

[pinkdotdesigns]

hmmm... so i am guessing if it's tuned properly then can ar?

 

[GTpuI]

i am also using that mits engine but ok what.putra pun tapaula...tapi putra standard la.aku tukar extractor dgn downpipe mivec je.tabung gti ori.

 

[cooljas]

Bro,

I think can, but a stock 4G93 may not be tuned properly. It depends very much on the settings for cam pulley. :)

If u are saying about adjustable cam pulley then its not 100% stock ady!

 

[Spoon)))]

hehe...this thread is getting better n better...

 

[pinkdotdesigns]

hmmm... ok just a lil question here, how do i increase the torque from the engine?

 

[CARENT]

If u are saying about adjustable cam pulley then its not 100% stock ady!

yes... it may be true. But the only problem is this, the stock settings by Proton may not be up to standard. Imagine when I first bought my car, it was so under powered even my fren driving a 1.6 said it didn't feel like a 1.8 DOHC. :angry_smile:

So, definition of stock should be no changes to the internal parts of the engine.


Changing of the compression ratio via the cam pulley should be considered ok la.... :regular_smile:

I think changing to R3 cams and the PnP done by R3 should be the way to go!!! :shades_smile:

 

[cooljas]

yes... it may be true. But the only problem is this, the stock settings by Proton may not be up to standard. Imagine when I first bought my car, it was so under powered even my fren driving a 1.6 said it didn't feel like a 1.8 DOHC. :angry_smile:

So, definition of stock should be no changes to the internal parts of the engine.


Changing of the compression ratio via the cam pulley should be considered ok la.... :regular_smile:

I think changing to R3 cams and the PnP done by R3 should be the way to go!!! :shades_smile:

When u change to an adjustable cam pulley?Do u called it as stock pulley or adjustable cam pulley?Anyparts that u have upgrade or change it, its not called STOCK anymore unless u replace it with the same spec and same thing!
1.8DOHC stock is very underpower due to factory setting, they set it quite rich!Try rechipping, adding a piggyback or change to a standalone then u will improve a lot and your fuel consumption will be better if it is properly tuned!
I agree with you R3 cams r very good.......:shades_smile:

 

[5115]

satria 81,i'd go thru a website auto.vl.ru.com the engine u having now is a bit less power/torque compare to putra's.

correct me if im wrong coz dun have time to go thru all pages in this thread.

 

[potssum]

ive just install FSE fpr, to all the sifus out there.. how much should i set the pressure? some's tell me to set it at 2.6 bar.. what do you reckon?what is the ideal pressure should i set?

 

[TitanRev]

After reading this thread, I really have mixed feelings. Some say with this mod the car is fast some would say it's not.

I never own any Proton cars before so I know nothing about 4G93P. I would like to know whether is 4G93P worth modding? I'm not planning to use it for racing or trying to win some Vtec but it's purely to satisfy my modding bug.

If I would want the 4G93P to rev freely and it feels like a true 1.8? what can I do? swapping another engine is different story for me but I like to know how much can the 4g93P can be done? budget is not a question to me. Also is NS performance is a good tuner for proton engines?

Really appreciate the feedbacks. i need technical information..example: what piston can be swap (mivec 82MM is the safest swap that I got to know from this thread), E3 cross member can be swap in? other things....etc...

My main focus is on the engine, engine management, suspension & chassis.

Thanks

 

[joe_mirage]

hi guys. just wanna share some info.

the fastest 4g93 setup that ive read somewhere on the net is 208.9hp/7500 rpm.
4g93 + high cam + 4 throttle + motec + 1.9L .

the fastest 4g93 non mivec in malaysia are satria R3 4 throttle & MAG yellow GTi . all very powerful without changing head to mivec. class F non vtec winner.

for me. i think 4g93 is very gud engine. if u know wut to do to make it fast. can be on par with engine with variable timing/lifting.

all motor power!

 

[firdausasri]

Hi Guys,

My soon going to be project before letting go of my Satria GTi.

4G93P ported & polished, valve cut and port match
4G63 valves (bigger)
JUN billet cams
Stiffen valve spring
4G93T injector
Custom made 5-10mm cylinder extension (sit on top of engine block)
0.4mm gasket
JE forged piston 83mm or Mazda B8 83mm
4G94 crankshaft, conrod
4G93T inlet manifold ported and match
63mm throttle body with butterfly flap thinned
Semi racing clucth and cover
Stock 1.8 gearbox with Mivec final drive
Lightened flywheel
Pipercross Viper kit
RPW 4-1 extractor, 2.3 piping and Tanabe Medalion G muffler
E-manage with injector and ignition harness

This mod should definitely giving circa 2.0-2.2 litre pushing 180hp with 200-210nm torque on wheel.

 

[TitanRev]

firdaus, the cylinder extension is for what? to lower the comp ratio?