I found this specs on the internet...

Engine model 4G91
Displacement, cc 1496
Max.power (Net), kw(PS)/rpm 97 ps (71.34 kw) / 6000 rpm
Max.torque(Net), N*m(kg*m)/rpm 12.8 kg*m (125.53 N*m) / 3500 rpm
Power density 10 ??
Engine type Serial 4 cylinder DOHC16 valve
Engine information
Fuel system Electro- carburetor
Fuel type Unleaded regular gasoline
Compression ratio 10
Bore, mm 78.4
Stroke, mm 77.5
Fuel consumption at 10-15 modes, l/100km 6.2

While...

Engine model 4G15
Displacement, cc 1468
Max.power (Net), kw(PS)/rpm 91 ps (66.93 kw) / 6000 rpm
Max.torque(Net), N*m(kg*m)/rpm 12.4 kg*m (121.60 N*m) / 3000 rpm
Power density 9.01
Engine type Serial 4 cylinder SOHC12 valve
Engine information MVV
Fuel system ECI multiple
Turbocharger No
Fuel type Unleaded regular gasoline
LEV system (Low emission vehicle) No
Compression ratio 9.4
Bore, mm 75.5
Stroke, mm 82
Fuel consumption at 10-15 modes, l/100km 4.7

Why is the fuel consumption for the 4G91 engine so much higher than the 4G15 when both are 1.5l engines?
What does it mean by "Fuel consumption at 10-15 modes"???
Lastly, say I have a Satria, would it be wise to switch to the a 4G91 engine or 4G15 if fuel is my main concern???

Thank you for your opinion...

4g91 is double cam and 16valve ler. 4g15 is single cam and 12 valve only. the 4g91 accelerate is better than 4g15.

Wrong....

Actually, 4G15 is made to replace 4G91. There are a few types of 4G15 which incorporates SOHC, DOHC and even MIVEC technology. There is also GDI based 4G15.

The only thing is that 'our' 4G15 is the economical one.

4g91 is a good engine replacement for your 1.3 / 1.5 wiras. plug & play, no problems, power ok, lots of upgrade opportunities. the current price for the half-cut now is between 2.8 to 3.2k.

There are also another carburator variant of the 4G91. The 91 has DOHC layout, therefore more peak power. Yup, soulfly is rite, there's a DOHC 4G15 with the timing belt situated at the left hand side(driver's view). While the DOHC MIVEC version of 4G15 is implemented on the latest Colt. There's even MIVEC turbo for the Colt ralliart version. Nevertheless, i still think the EFi 4G91 is better than our locally produced 4G15P.

So the 4G91 is better?

Yup, overall it is better
Our economical 4G15 is way too underpowered

you'd be supprised how economical a efi 4g91 twin cam can be. the fuel consumption for an auto is less than our 4g15 auto

Juz wondering, how do you know how economical an EFi 4G91 Twin Cam can be??? Have you use it before???

"Our" 4G15 is underpowered and consumes more fuel because of Proton's "clever" idea to match it with a 3-speed auto gear box right? Or does it also suffer with a manual???

wow...where is the 4G91 original from (what car)?

Since it can fit into Wira/Satria (p&p), can fit into iswara as well?

4G91 if not mistaken are from Lancer with timing belt on passanger side one. and one of the mounting doesnt fits iswara/saga .. need to modify.. not clear if there is 4G91 for saga chassic.. maybe the carburator version ..not sure. :-).. but is a very common engine to transplant among those who wanted a better powerplant yet fuel economy.

it is mitsu 1.5 dohc engine. from mitsu lancer mx saloon.

have transplanted a few 4g91 for some wira / satria customers, all of them damm happy with the power & economy. one of them had the cams & ecu upgraded, even my 1.6 satria cannot catch that car:-P

as for iswara, too much work need to be done to fit that engine in. the mounting points need to be changed. done that before, don't intend to do it again. if u're really interested, my friend's workshop will do it for you.

normally how much will they charge for the engine include workmanship?
after swap engine, what else to do with the car. so roughly for complete setting how much? sorry to ask many questions because u said u done a few change for ur customer.

I found it in a 1993 Mitsubishi Mirage...it comes with automatic tranny...does it still provide good power and decent economy???

if u buy h/c den gonna services the engine and change some old part hardware. after transplant den gonna go inspection at puspakom and jpj approval. now transplant a 4g91 den settle everything gonna like RM5k.

dun worry, the power of 4g91 auto still good 1. still hv many thing to play n mod 1.

Wow...RM5000.00... I think after transplant, no money to "play n mod" d...

coz the h/c price is increase d mah. jz the h/c oso wan RM3k++ d lo...

If i remember .. for AUTO is around 2.8k .. Manual 3.3k .or maybe 3.5k .. that was months ago ..

3.5k + 1k (workmanship) + 500 (replace parts timing belt and so and so)... another few hundred for JPJ.. 5k ++ a bit .. .

Does it come with the 4-speed auto gearbox?

Yup they come with 4 speed auto gearbox .
If i didnt mix up my info ..

yupe. it is 4 speed auto tranny.

[quote=Azuma-kun,Nov 21 2006, 01:04 PM]
normally how much will they charge for the engine include workmanship?
after swap engine, what else to do with the car. so roughly for complete setting how much? sorry to ask many questions because u said u done a few change for ur customer.

[/quote

i'm not the cheapest guy around, but i stand by my workmanship and the finishing is top class. no straight swop of engine, but we clean and check the donor engine before transplanting it in your car. the half-cut is approx 3k, labour is 1.5k and stand by 1k for parts and lubricants if it's an auto, or 1.5k for parts and lubricants if it's a manual as the prices include a new clutch set.

that's it. that's what i wanna hear. people wont mind the price if the hand-touch is tip top. so around 6k, i will have a tip top new engine transplant car.

once u wanna transplant den sure gonna prepare more $$ for it to done. the important of transplant is the workmanship. if all done nicely den it will not come any problem disturbing, no nit visit to the workshop always.

eh...actually i dunno what sso ever about mitsu engine. 4g91 is 1.5?
i always heard mivec engine. 4g91=mivec ??? or another engine type?

4g91 is mitsu 1.5 engine and mivec is mitsu 1.6 which is 4g92. the mivec engine can be hybrid. which the ppl always call it 1.8 mivec.

4g92 also comes in non-mivec version

yes...be prepared both in info n $$
as u'll need to find a workshop tats capable of doing it nicely

regarding fuel consumption...its ur right leg tat dictates it

yupe, the 4g92 got mivec and non mivec. but both also is DOHC, also got 4g92 in SOHC.

this evening i went to klang spare part at kapar..the worker told me that for the 4g91 manual it will cost you 3500 n auto 2K samting..the workmanship will add u another 1K..thing such as 4g91 dashboard, head lamp, n front bumper is all yours

tat is 4g91 h/c mah sure come wif the bodypart. many year ago wif the 3.5k u can settle everything d.

Auto only RM2+++... That sounds reasonable... Hope the gearbox brings no problem'

u can check the engine b4 buy rite...?

Ask the chopshop guy to start the engine first. Make sure there's no weird sound

yes u can check the engine..they showed by opening the engine oil cap..dunno if they can open up whole engine cover hehe..they engine look clean (40000KM only)

cant open whole engine while the engine still running.

Get 91 then taruh 93 cams XD

waikit now on using it.

last time Yong also use 93 cams in his 91

What's the advantages gained???

yalor, yong is when transplant he put inside 1. when he transplant he got da cam d. den straight away taruh inside d. hehehe...

Heard from a fellow user, mid rpm power kicks in till high revs

wow, pro talk..actually not knowing much bout this type of engine..but enjoying of reading here

hey brother, if u wan save money, jz modified your 4G15. U can do PnP, change 1.6 clucth pad, light flywheel, extractor, add fuel regulator. i think RM1500 can settle it.

Will it save fuel???

if u wanna mod your car, the last thing u wanna think about is fuel! where do u think the power comes from:-P

Well, actually that's the main point I wana mod...
I like the whole Wira look (aeroback/Satria)...but it's a fact that these models use up petrol as it were free!
So, I would like to get a more efficient engine...not til like that of the i-DSi, but something better than the stock...
If I wana go for power, might juz go for EVO half cut'

is 12km per litre good enuf for u? normal everyday driving? that;s what i'm getting with my satria 1.6. ported head, oversized pistons, fully balanced engine, upgraded ecu, upgraded oil pump, oil squrters, oversized throttle body, gti exhaust manifold, hotbits piping, custom rear box.

The fuel sure consumption sure more a bit, but the HP is better than stock depend on how u modified.

Well, that's y I wana transplant either a 4G91 or 4G15... their FCs are said to be better... I juz wana achieve 6l/100km @ around 16km/liter...without sacrificing too much power and torque...

Oh btw, what engine are u using??? Stock???

my engine is an original proton 4g92. 16km/l? hard to get for city driving. 4g91 might give u 12km/l in ciry driving.

you wanna rival the guiness world record izzit?
16km/L for city is very hard to achieve, close to impossible also

yalor.... 16km wor... so hard to achieve lor...

my waja 1.6 auto gives me 9 to 10km per litre only for city driving.... yet the car is underpower

so 12km/l is good enuff actually

it is normal rite for 10km/L.

in ur info, i remember last time i read about 4G91 having 115-120HP? how come ur detail only 97?
n i heard 4G15 also 85hp

4G91 is 110HP on crank (almost same with 4G92 SOHC)
The detail of 97 shows the Wheel Horse Power

For 4G15, on wheel should be around 80WHP onwards

Minus off 10%-15% from the actual HP then you will get the result.

Of coz I don't mean 100% city driving...
I mean combined...
I drive to Setapak frm Pdn Indah daily...so, hoping to get a good FC car since the route does not have heavy traffic...

u mean if the hp rating is showed in ps = on wheel horse power?
coz it state in ps
i also confused XD
this car got same power as VTEC !!!

PS = metric HP
97 ps = 95.67HP only
And its on wheel of course, on engine alone is 110 HP

Same power as VTEC as in which type of engine? SOHC VTEC I believe ler if according to the HP figure above

This post has been edited by shinjite: Dec 11 2006, 09:12 PM

the 1 used by Honda City