4g13 upgrading

s.l.k

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Dec 18, 2006
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yes..
there is a cam, adj cam and a crank if you want to mode it..
just bought the item and haven't install it..
im still searching how to proper tune the cam..
gone let u know when i have install it..

have u done anything on your ride bro..
mind to share..
bro, im reli interested if the adj cam can increase 8hp on standard engine...im not sure how to tune it but these is the link that i saw the statement, may b it can help u...http://www.ben9166.com/2010/06/4g13-and-4g15-modification-from-mild-to.htmlIm not yet do any major modification, now im on the way in research how to get the most effective way to improve my car performance, then sekali gus modified it...thats y i ned more oppinions and experiences frm u all...
 

series5401

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bro, im reli interested if the adj cam can increase 8hp on standard engine...im not sure how to tune it but these is the link that i saw the statement, may b it can help u...http://www.ben9166.com/2010/06/4g13-and-4g15-modification-from-mild-to.htmlIm not yet do any major modification, now im on the way in research how to get the most effective way to improve my car performance, then sekali gus modified it...thats y i ned more oppinions and experiences frm u all...
thanx for the link..
on the increase, i saw some says so too..
btw, you can use wat borat mode..
some of simple but improve mode..

btw bro, ur using a 4g13 carb or efi..

---------- Post added at 12:34 PM ---------- 6 hour anti-bump limit - Previous post was at 12:31 PM ----------

what u mean set up cam??.. pasang and use only laa..
bro sifus sir skywalker.. hehe..
i mean the adjustable cam..
got advance and retard..
that got degree on it..
ehehee..

sorry for the general info i gave b4..
 

s.l.k

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thanx for the link..
on the increase, i saw some says so too..
btw, you can use wat borat mode..
some of simple but improve mode..

btw bro, ur using a 4g13 carb or efi..
u'r welcome ....
now i still wonder wana change my cam, cam pulley n crank pulley or not...
im driving a 2003 wira aeroback, its a 1.3 injection...but im not sure its ecu is siemen or mitsu. some ppl said siemen ecu is not good for tuning....not all after market lighten crankpulley are suitable for it....bro, may i kno wat brand crank pulley r u using?

---------- Post added at 03:28 PM ---------- 6 hour anti-bump limit - Previous post was at 03:05 PM ----------

hey slk,

i think for yr case, for now la.. just get a lighten crank pulley like the JASMA. the effect is satisfying. but be warned that you will lose out in end power( meaning at highspeed ). so yr speedo meter wont be able to go up easily anymore above a certain speed, perhaps 110 haha.

for lighten flywheel, dont do it now as well if ya not planning to replace or get new clutch set because it has high labour charge and it is not worth it. i suggest wait till yr clucth pad kong first.

in my opinion dont do exhaust mode for pick up cuz it will result in higher fuel consumption which have been a problem for you. does a bigger block affect fuel consumption, that i dont know. and if an 850cc kancil can tapao you, i think its probably time for service if minor and if severe spark plug not efficient due to old age. to check whether yr spark plug timing chun or not, smell yr exhaust. heavy patrol smell means the coordination out d. that means incomplete combution due to too much oil being released. so lag of power. this are the posibilities in my opinion la hah. an unhealthy 1.3 will lose teribly to healthy 850cc car.

so in my opinion, basically la, a lighten crank pulley for now is enough already. but do consider the block's pro and cons if it really cost 500 bucks. cuz i think the block will be more worth it as the lighten crank pulley already cost 300 bucks and the block provides much better torque.

good luck :)
bro, reli thanks for ur suggestion ...its help me alot....
u mean if i change the crankshaft to the lighten1, the pickup will be good but its hard to reach 110km/h?

i just go n shop the halfcut shop in seremban area few days ago, the PIC said now a day they dint sel engine block seperately, they sel engine togather...n the 4g15 engine kosong cost 1.8k...500 bucks for a engine block i think is many years ago....

---------- Post added at 03:50 PM ---------- 6 hour anti-bump limit - Previous post was at 03:28 PM ----------

hello fellow 4g13 frens.. i drive a wira 1.3 fuel injection 1999.
i hav recently done up my car a little. i juz spend 5k for interior and engine upgrades. exterior stock.
what i've done to the engine:
jasma racing cam
arospeed adj. cam pulley
lightened crank
denso iridium spark plugs
stromberg power booster and plug cables
apexi air filtercharger
4-2-1 wei yip extractor
gab new absorbers and new lowered springs( definately lower and stiffer)
brother borat, thanks for ur sharing....
i drive a 1.3 injection wira aeroback year 2003, if i wana change my cam, cam pulley and crank...the brand that u use izit suitable for my ecu? heard some said that different ecu hav different design for it...

mine to share what deg r u tune for ur cam?

:biggrin:
 

X.O

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Aug 19, 2010
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hey slk,

yes your pick up will be very much better but once it hits 110 onwards, yr speedo meter will move up slower d. my friends car liddat thats why haha.

bout the bout block keep trying to look around. i think they still should have.i suggest a 1.6 block cuz more syok la haha. but it cannot fit our 1.3 so you gotta bore the block.

im also new and i mode slowly. i suggest you do the same. cuz the wrong mode will result in side effects that will end u up wasting lots of money. just take suggestions. cuz alot of ppl here suggest to you their modes for their type of driving. so u gotta see what type of driver you are first. for example, thrs no point upgrading exhaust system for better pick up cuz yr fuel consumption will be higher when u can actually tarik more with yr stock engine with the almost the same amount of fuel consumption used. tarik less, less power and less fuel consumption.. and vice verca. thats if yr ride is a manual of course haha. just my opinion la. some may think differently
 

series5401

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i just bought jasma item.. all the items that u mention..
but still got no time to install..
on the different engine and different item, im not so sure..
if dats true, you cant follow mine,
coz i am using 4g13 with no brain..
just got a carb.. eheheee..

btw, on the exhaust system..
some says that is a basic mode so that your car can run smooth..
the extractor can increase the pickup and long if im not mistaken bro..
correct me if im wrong..

btw, wana add..
install CAI..
cold air is good for your engine rather that hot engine from engine bay..

one more, dont use heavy rims..
hehe..
will decrease your pickup..
for sure..
like mine.. ehehehe..
pickup not so gud..
 

Mus Bai Mus

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for time being,this is my mode:
421 extractor+nanas+center bullet
koni sport spring
voltage stabilizer+grounding
hks micro compressor+hks magnetic fuel saver
bosch sport plug+denso iridium power IW16
apexi dual flow open pot+cold intake

guess what???
my 4g13 goes better pikap n less fc.....i had my way from kl to penang only rm50 ron95.....
hahahha.....that my mode.....
 

darrengoh89

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To the topic starter ...In my humble opinion ...if you are planning to sell your car in the future and not gonna keep it even if you get another new car ...i kindly advise you not to touch the internals ...maybe you could go for exhaust system mod ...get either wira se or hotbits extractor ...money much more worth it ...replace the catcon to bullet if you want ...piping diameter stay stock ...muffler its up to your preference ....s-flow or straight flow will do ... many of you guys will be wondering is s-flow suit for manual ? base on my experience ...its the matter of the quality and who made it ...for me ..s-flow for more backpressure hence better response in low end but not for mid range rpm onwards ...airfilter you may stay to drop-in ...juz change to aftermarket drop-in air filter such as knn will do ... this 2 mod may give your engine nice and responsive enough to drive ...if you are planning to keep the car even in the future will be your toy car ...there's 2 options for you ..its either you go get a 1.5 block and stroke it to 1.6 ...or stay with your current 4g13 block and stroke it up to 1430cc ... this 2 options is reliable enough and fun to drive with it ...make sure change your radiator to 1.6 to prevent your engine having overheat issue ...later on you may go for cam if you want ... source for billet pipercam ...else ..go for powerzone and pair with an adjustable cam gear to tweak the powerband base on your preference ....and lastly ...a PnP headjob ....Hope this information may give some helps to you ... Happy modding
 

borat

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brother borat, thanks for ur sharing....
i drive a 1.3 injection wira aeroback year 2003, if i wana change my cam, cam pulley and crank...the brand that u use izit suitable for my ecu? heard some said that different ecu hav different design for it...

mine to share what deg r u tune for ur cam?

:biggrin:
im not so sure bout the ECUs bro. im driving a wira 1.3 fuel injection 1999. so i think mine is a mitsu??
my cam degree is 270 at intake and 275 at exhaust.
heres the link to my cam bro.http://www.zerotohundred.com/newforums/engine-and-performance/333799-jasma-4g13-4g15-highcam.html

i dont noe wats my tuning for the cam bro. the mechanic juz installed and set it without asking me.
but i felt the power band was quite optimum so i juz left it tat way bro. :biggrin:

---------- Post added at 05:33 AM ---------- 6 hour anti-bump limit - Previous post was at 05:27 AM ----------

for time being,this is my mode:
421 extractor+nanas+center bullet
koni sport spring
voltage stabilizer+grounding
hks micro compressor+hks magnetic fuel saver
bosch sport plug+denso iridium power IW16
apexi dual flow open pot+cold intake

guess what???
my 4g13 goes better pikap n less fc.....i had my way from kl to penang only rm50 ron95.....
hahahha.....that my mode.....
hello bro mus.. wanna ask the voltage stabilizer+grounding is it useful? mind sharing how much you bought them bro?
wat bout the hks micro compressor+hks magnetic fuel saver? works well? how much are those too bro... thanks...:biggrin:

---------- Post added at 05:37 AM ---------- 6 hour anti-bump limit - Previous post was at 05:33 AM ----------

hey guys wanna ask wat is the biggest size rims that can be fitted on wira 1.3??

---------- Post added at 07:05 AM ---------- 6 hour anti-bump limit - Previous post was at 05:37 AM ----------

juz wante to share wit u guys tat this guy selling stuff qite cheap.
Hks grounding wire he selling juz rm20. im gonna get from him.. free postage too from 16th to 25th tis month.. heres his thread :http://www.zerotohundred.com/newforums/engine-and-performance/356931-wts-hks-product.html and heres his page :http://10tative.wordpress.com/promotion-16112010-to-25112010/
 

Mishima

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Biggest rim size should be 17 provided right suspension setup, but surely a lot of power loss because of the tyres weight and frictional resistance surface. For a 1.3 car max recommended rim size should be 15".
 

series5401

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Biggest rim size should be 17 provided right suspension setup, but surely a lot of power loss because of the tyres weight and frictional resistance surface. For a 1.3 car max recommended rim size should be 15".
ya.. using 17 inch rim lost many power due to its weight..
currently using a 16 kinda heave also..
recomended using a 15..
our 4g13 cant afford to gain pickup using a bigger wheels..
but, for smart looking yes u can use 17 with right suspension and offset off the rim..

agree with mishima..

on the other hand,
possible to use 4g13 head with 4g15 block?
any gain?
pros and cons?
 

Mishima

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I guess can... For the purpose of raising the compression for more power without affecting fc. From my previous discussions with certain sifus they said its possible but you need to skim the 4g13 head (not sure about this though). You can either bore your 4g13 block to 4g15 or just directly use 4g15 block and pistons.
Cons? More pinging or shorter engine life I guess.

Now I didn't drive my carburetor 4g13 stock although previously I plan to mod it due to its power vs fc ratio, but after I got my Auto BLM I am more concerned on trying to save on fc :D. Maybe any other sifus got other suggestions?
 
Last edited:

darrengoh89

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4g13 and 4g15 head is the same! .... only different is the block ...to stroke a 4g13 block to 1.5 is not recommended ...coz you will be facing reliability issue ...the cylinder wall will be too thin ..the max bore size for a 4g13 block without facing reliability issue is 74mm low compression piston ...which it would be 1430cc...if you wanna plonk in a 4g15 block ...then go for it ...don't worry about the head muz skim or not to fit in...no suchthing ...4g13 is a high compression engine is due to the piston ...not the head ...if you want high compression after plonking a 4g15 block ...send your head for high compression skim ..thats it ...in my humble opinion ...do it 1 shot if budget allowed ...do not make it a 2 times job in the end ...do 1 shot as in 1.6 stroker kit and PnP headjob ...
 

s.l.k

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...there's 2 options for you ..its either you go get a 1.5 block and stroke it to 1.6 ...or stay with your current 4g13 block and stroke it up to 1430cc ... this 2 options is reliable enough and fun to drive with it ...make sure change your radiator to 1.6 to prevent your engine having overheat issue ...later on you may go for cam if you want ... source for billet pipercam ...else ..go for powerzone and pair with an adjustable cam gear to tweak the powerband base on your preference ....and lastly ...a PnP headjob ....Hope this information may give some helps to you ... Happy modding
...to stroke a 4g13 block to 1.5 is not recommended ...coz you will be facing reliability issue ...the cylinder wall will be too thin ..the max bore size for a 4g13 block without facing reliability issue is 74mm low compression piston ...which it would be 1430cc...
darrengoh, reli thanks for ur valueble suggestion and oppinion, its help me to gain alot of knowleadge of modification as im stil a new learner....

there r few things that i ned ur futher information...if i wana stroke up my 4g13 to 1430cc, what type of stroker kit shud i ned to go for?then how can i get the 74mm piston?does it comes with other mitsu engine or it is a after market product?if i go for the 74mm piston, do i ned to do any modification to my 4g13 block?as i kno, usually the low compression piston is for the turbo engine, if i just plug in to 4g13 without skiming the piston head, will the engine face any losses of torque?:hmmmm:

thanks ...darren sifu....:adore:

---------- Post added at 11:41 AM ---------- 6 hour anti-bump limit - Previous post was at 11:22 AM ----------

dear sifu-sifu sekalian....
many foreman suggest me to change my ori 4g13 flywheel to the supertouring 1 in order to get a better pick up....recently i just bought a new 8" supertouring flywheel which manufacturing in china....im not sure this china product can tahan or not but i just try it since the price is affortable....i hav read alot of online comment and issues of lightening the supertouring flywheel before fix in...

can u all give me some oppinion or sharing some of ur experience of how to lighten the flywheel in order to get some improvement of the pick up and also better in top speed.... for example how many gram or how many mm shud i ned to skim the flywheel and what brand cluth plate shud i ned to use(not for drag or racing, just for daily use)....

thanks all....
 

darrengoh89

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I'm not sifu lerr ...juz sharing some information base on my experience ...I'm a newbie as well ;) ..

For your 4g13 block ...no modification needed ...juz send your block for rebore and do engine balancing ..1 shot ...don't miss the engine balancing job ...else you will regret ...trust me ....conrod and crankshaft use back..so the only thing you have to change is piston..74mm piston is a over-sized piston from a 4g12 mitsubishi engine ..try source at any spare part shop ...yes ...this piston is a low compression piston ...in order to gain back your compression ...kindly recommend you to send your head for high compression skim ...like i said ...if can ..do 1 shot ...PnP head as well ...if budget allowed ....

Clutch use back stock ...stock clutch is still capable enough to hold the power that produced from your engine ..upgrading clutch would not improve your pick-up as in faster than before ...you will gain better bite each time you change gear only..new stock clutch can give you the similiar feeling as well hence lighter ....but you can option for skimming flywheel ...skim 500-600gram is enough ...skimming too much you will lose your top end ..so no need waste so much money on upgrading your clutch...with this engine rebuild spec and paired with your 1.3 gearbox ...is juz nice enough to drive around city and touge as well ...later on when you got more money ...you can start playing cam ...tweak the powerband base on your preference ...

Happy Modding ;)
 

s.l.k

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Dec 18, 2006
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For your 4g13 block ...no modification needed ...juz send your block for rebore and do engine balancing ..1 shot ...don't miss the engine balancing job ...else you will regret ...trust me ....conrod and crankshaft use back..so the only thing you have to change is piston..74mm piston is a over-sized piston from a 4g12 mitsubishi engine ..try source at any spare part shop ...yes ...this piston is a low compression piston ...in order to gain back your compression ...kindly recommend you to send your head for high compression skim ...like i said ...if can ..do 1 shot ...PnP head as well ...if budget allowed ....;)
thanks for the suggestion bro, its reli a good plan for me to start up my engine modified.....

Clutch use back stock ...stock clutch is still capable enough to hold the power that produced from your engine ..upgrading clutch would not improve your pick-up as in faster than before ...you will gain better bite each time you change gear only..new stock clutch can give you the similiar feeling as well hence lighter ....but you can option for skimming flywheel ...skim 500-600gram is enough ...skimming too much you will lose your top end ..so no need waste so much money on upgrading your clutch...with this engine rebuild spec and paired with your 1.3 gearbox ...is juz nice enough to drive around city and touge as well ...later on when you got more money ...you can start playing cam ...tweak the powerband base on your preference ...
but now i'll ardy bought the supertouring flywheel, no choice...hav to use it ardy....u mean i can use back the 1.3clutch plate with super touring flywheel? izit possible?:hmmmm:
 

Mishima

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Btw, tumpang thread, what to do for 1.3 Campro engines? Wann cut on FC as well lah. :D
 

darrengoh89

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thanks for the suggestion bro, its reli a good plan for me to start up my engine modified.....



but now i'll ardy bought the supertouring flywheel, no choice...hav to use it ardy....u mean i can use back the 1.3clutch plate with super touring flywheel? izit possible?:hmmmm:
no ...but since you bought already ...then use it ...in this case ...use your super touring clutch and skim your ST flywheel to the maximum ...900gram maybe ? but overall the weight ..i doubt its lighter than stock exedy 1.3/1.5 clutch set ...

---------- Post added at 02:46 AM ---------- 6 hour anti-bump limit - Previous post was at 02:43 AM ----------

Btw, tumpang thread, what to do for 1.3 Campro engines? Wann cut on FC as well lah. :D
Sry ..not a campro user here ..so not really familiar with it ...you may ask around the campro users out there ;) ... for me ..lighter right foot = better FC :biggrin:
 

s.l.k

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Does any one stil hav any experiences or comment abt the lighten of super touring flywheel? feel free to share...thanks...!!!:love:
 

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