4G91 Gang..

[Elmo_X]

sifus

want ask : currently im driving iswara 1.5 carby , planning to get a carby version of 4g91 or is it better to get injection verison
if i go for carby version of 4g91
can i just get the engine only ?? and the rest use back 4g15 parts possible??

or have to do half cut change all to 4g91 parts ??

 

[iswara204]

sifus

want ask : currently im driving iswara 1.5 carby , planning to get a carby version of 4g91 or is it better to get injection verison
if i go for carby version of 4g91
can i just get the engine only ?? and the rest use back 4g15 parts possible??

or have to do half cut change all to 4g91 parts ??

Bro Elmo_X,

On my opinion, a 4g91 fuel injection is anytime better than the carby model. There is horsepower difference too. Why i say this, my friend changed 4g91 carby and compared with mine (4g91 fuel injection), he cant catch up although he can go on high rev, which he suffers power loss on high rev.
End up spending more time and money to look for necessary fuel injection part for the conversion.

I cant recall much what he changed, but from my best memory, he just changed engine lantai ( block+head+carb).

Anyone else done a 4g91 carb here?

 

[Elmo_X]

but will there be any issue on JPJ ?? since the engine mounting need to have some minor alteration
full 4g91 injection then need get half cut leh , since my ride is carby need totally rip off the whole thing and redo

or are there any cheaper way to change to 4g91 ??

 

[syimirmazlan]

but will there be any issue on JPJ ?? since the engine mounting need to have some minor alteration
full 4g91 injection then need get half cut leh , since my ride is carby need totally rip off the whole thing and redo

or are there any cheaper way to change to 4g91 ??

just buy a complete injection set, why need to buy 4g91 injection halfcut?complete injection set plus labor will cost about 1.5k...

 

[Elmo_X]

hi bro syimirmazlan

can explain further ??i mean what is complete injection set??
engine only ? remainder use back 4g15 auto??

 

[syimirmazlan]

hi bro syimirmazlan

can explain further ??i mean what is complete injection set??
engine only ? remainder use back 4g15 auto??

owh sorry man, i thought u already ran a 4g91 carburetor...hmm, if u r thinking of upgrading to 4g91, its better to get the 4g91 injection as the 4g91 carburetor power is not much of a different compares to 4g15...

 

[joseph_lim75]

Hi everyone, i would like to know if there is any throttle controller out there that is meant for our 4g91 engine. Like the Pivot 3-drive, e-drive throttle controller. You can change sport, eco, normal mode and then by applying different steps to different modes to suit your driving style. Anyone ?

 

[calvin9683]

if im not mistaken... throttle controller is for those newer cars dat uses "drive-by-wire"...
for older engines dat uses throttle cable, it will b useless....

 

[syimirmazlan]

I wouldn't recommend 4G93 head on a 4G91 block... u end u lowering your compression drastically... as though 4G91 doesn't already have a low enough compression. =p

You'd actually lose power. =p

hello bro...where do u get the idea that 4g91 head wont fit or will lower down the compression drastically?i saw some of ur post stating that 4g91 head jacket is not same bla bla bla...u will make people confuse...
4g91 and 4g93 head shares the same water jacket position, and fitting 4g91 wont lower down ur compression...never...
but it wont make as a little good power like 4g93 head simply just because the of the air inlet in 4g93 is a bit better...that's all..

 

[beztien]

hello bro...where do u get the idea that 4g91 head wont fit or will lower down the compression drastically?i saw some of ur post stating that 4g91 head jacket is not same bla bla bla...u will make people confuse...
4g91 and 4g93 head shares the same water jacket position, and fitting 4g91 wont lower down ur compression...never...
but it wont make as a little good power like 4g93 head simply just because the of the air inlet in 4g93 is a bit better...that's all..

Reboring your block to 81mm and use mivec high comp piston or 92 Dohc will help a lot on compensating the 4g93 head. Ive done it. A great rojak recipe!

---------- Post added at 09:33 AM ---------- 6 hour anti-bump limit - Previous post was at 09:27 AM ----------

hi all forummers here...just wanna ask what is the standard injectors for 4g91..and what is the suitable size for upgrades such as full exhaust setup and high cam?

Hi there,

240cc from mivec or 4g93 should be enough. Or, to be safe, get 275cc from eterna Twin turbo. Make sure u have a piggyback to tune the AFR...

 

[replayreplay]

Just got a 4g91 fuel injection Auto half cut, planning to install it into my old wira and replace the original 4g15 carb 1.5 auto which has terrible FC. Starts blowing out white smoke once i drive up to 80kmph.
Question is will i get more power in terms of pick up or mid from this 4G91 auto? Will the FC improve as well? This half cut mileage is already 160,000km by the way.
What do i need to change once this engine has been transplanted?
Many thanks.

 

[iblizs]

hi to all sifu out there can anyone tell me where@workshop to setting camshaft with properly tool to set hi cam for 4g9 series engine..

 

[syimirmazlan]

hi to all sifu out there can anyone tell me where@workshop to setting camshaft with properly tool to set hi cam for 4g9 series engine..

Powerzone Glenmarie, Sunway:- Millenium n many2 more

 

[mugan shan]

hello everyone...i am using 4g91 carbureted model using iswara stock carburettor.....is it possible for me to do open pod....like this in the picture attached...the first picture with red car is mine....i wanted to do open pod something like in the another picture attached

 

[jhonjhon]

Hello there.Anyone can give to me the manual or diagram of 4g91dohc.Kindly send to my email at [email protected] you in advance...

I have currently problem with the firing order my two HTW no 2 and 3 are not firing.Any master/s here help me to rule out...I have changed the HTW and the ignition coil already..

 

[amzo83]

i need air cond compressor for 4g91 engine?anyone

 

[Gilbert0999]

Just got a 4g91 fuel injection Auto half cut, planning to install it into my old wira and replace the original 4g15 carb 1.5 auto which has terrible FC. Starts blowing out white smoke once i drive up to 80kmph.
Question is will i get more power in terms of pick up or mid from this 4G91 auto? Will the FC improve as well? This half cut mileage is already 160,000km by the way.
What do i need to change once this engine has been transplanted?
Many thanks.

Hi there, 4g91 power is definitely better then 4G15 carb, For my opinion things need to change after transplanted is the timing belt, Lubricant, filters, and check those mounting n bush. Just my 2 cent..

---------- Post added at 03:58 AM ---------- 6 hour anti-bump limit - Previous post was at 03:54 AM ----------

i need air cond compressor for 4g91 engine?anyone

Hi there, maybe u can try this
http://www.mudah.my/Recond+Aircond+Compressor-22922022.htm

Cheers....

 

[nick14]

Hi all 4G91'ers...any one can recommend where is the best workshop or mechanic for this engine. thankYou.

 

[ayell]

Hello guys, any old frens still in here? :)

 

[Soul_h1515]

Hi guys,

I'm a newbie.. will be using 4g91 engine in 2 weeks time..
The car now in workshop for some repair... top overhaul and all..
Hope u guys can help me with some information when I need it.. thanks! :)