how to modified 4g91

[tyco263]

i have 4g91 engine...
the probelm is, how to make my engine more pickup

 

[gsrTurbo9166]

hi bro.it is depend on how deep is your pocket.if u hv deep pocket then go 2 buy adjustable cam as my fren did.c la ur budget is very important.

 

[tyco263]

now my budget about RM 2500.00, what can i do it for my car with this budget...
i dont want to change my engine to turbo or mivec....
pls help me..

 

[huakenny]

do d simple n easy modification 1st......open port air filter (branded)...whole ekzos system n extractor( 2nd hand branded).....then performance spark plugs with plug cable.......

sports suspension system..........front n reat struct bar...(upper one).....i think over ur budget oledi if included suspension system.....

dun touch internal parts of engine 1st....more expensive.....

make ur car stable so will faster when cornering...it helps when speeding....ok?

 

[tyco263]

if i want to change my throttle body, can it give my engine more power....

 

[Yong_5290]

i think theres no such thing as adjustable cam...u mean adjustable cam pulley rite...

wat i did 2 my 4g91 wit cheap low budget...

4-2-1 xtractor...cap ayam rm 100
cap ayam muffler wit straight 1.8" piping rm 200(piping)
4g93 1.8 cam(best is from putra year 97 rm 150
open pod air filter HKS power flow rm 200

dynoed and the result is 106.22hp on wheel at GT AUTO sunway

hope this helps

 

[tyco263]

this engine when i tarik 1st gear, its very short right and no pickup...
so any comments

 

[monmon]

piggy back + quad throttle

 

[alvin24]

Very short means got good pick up lar... else it would've been very long! Hahaha...

I agree with huakenny, basics mods first, then only go to higher stages of mods. Spark plug + spark plug cable i think not necessary though... till now also I still using my OEM spark plug cables.

Suspensions are important too... no point having all that power if u won't be able to use it properly.

RM2500 u should try going for a better suspension setup, then possible a high flow intake filter, extractor and exhaust. Think be then ur 2500 habis liau. Opt for drop in filter, i think better... if u're going for open pod, make sure you do a cold air intake and a heat shield for it.


Yong_5290
I thought your dyno was 106? haha

 

[Yong_5290]

typo error...106hp on wheel...

2 get this i spend less than 1k...

alvin24...yesterday u in syed arif?

 

[alvin24]

yeaps... u were there also meh?

 

[menace2society]

4g93T head coming soon to replace my 4g91....waiting for that moment next week.

 

[Yong_5290]

wow...nice...i also got 1 ported n polished head in my store...no money 2 install yet...heehhe:p

 

[boyzone]

If we put in adjustable cam pulley with std cam , will it work ??

 

[alvin24]

boyzone,
yes it will work... get it tuned properly. Dyno tuned preferably...

menace2society,
why in the world are u hoping to accomplish by putting in that head? If the first place it might not be too reliable due to the bore size difference between a 4G91 and a 4G93... 2ndly the ports might be too big... and 3rdly u might and i think most probably will lose compression.

 

[boyzone]

I think put in hole complete engine is better ...

 

[Yong_5290]

ok TYCO263...

the most money - power within budget will be xtractor

many 2 choose from...hot bits..powerzone..o mivec xtractor also can..

n then piping change 2 1.8"...this is wat alvin24 taikor told me...very very effective!!!smooth flow...

 

[tyco263]

oic... so what type of clutch can i install to my engine for more power..
i hope i will get your opinion about that

 

[alvin24]

Yes... out of my many exhaust changes experience, 1.8" piping is the best for 4G91. 2" also is too big actually... feels a bit sluggish at low revs.

Clutch doesn't increase your car's power... racing clutch gives better engine response and launching only, coz' it grips better... but u'll need to endure having a heavier clutch and a jerk-ier ride.

 

[Soundstream]

but ...POWERZONE..EXHAUST SYSTEM all 2" wan lor......HOTBITS..1.75"