how to improve the performance of 4G13 stock engine

RENESIS VIII

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RENESIS VIII

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walao eh.. i heard from people that i can find the one true master RENESIS here. i purposely risk my life, climb mountain, swim river, login zth from office pc just to learn from RENESIS sifu.. now he say he duno anything out of no where. :emoji_disappointed_relieved:
Hmmm, perhaps a different Renesis than me. There are a few senior Renesis member here.

Pressure is a form of restriction, do u really make or lose power

You are right. Looks like I got it wrong from my own assumptions again. Pressure is a restriction. Basic physics, how can I forgot or overlook this. In this case, I suppose you are right, back pressure will make you lose power. Otherwise, why do we see racing cars using very short exhaust piping and some even have their exhaust gasses expelled straight out from their exhaust headers. Maybe 2.0, 2.5 inch piping is the right size to go for more power.
 

LimauKanker

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LimauKanker

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Aug 27, 2018
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Perhaps tone it down. Dah cukup already
sure man, but just because you asked nicely.

Sometimes it is just annoying to see newbies-people who literally knows nothing trying to learn, in the end what they get is vague and general answers which mislead him as well as inaccurate information or some butt feeling from some "senior members". Being a senior member, should've act as what a senior member should be and not mislead new comers with vague information or his ideology. i believe our dear forumner here LittleWhiteWagon already pointed out enough points to underline what are the issues.

I am not axing anyone here, just a friendly reminder to say what you know and dont be shy to learn. In the end, that's what a forum for.
 
Aug 27, 2018
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The simple truth is power is torque x rpm. You want to make more power, you either increase the amount of torque you make for the same rpm range (which is difficult without increasing displacement), or you make the same torque at higher rpm.

How do you make the same torque at higher rpm? What's the limiting factor when it comes to developing torque at higher rpm? Is it your cams? Is it your exhaust manifold? Is it your exhaust pipe diameter? Is it your port design? Is it your compression ratio? All an engine does is pump air. If old (air) don't go, new (air) can't come.

And then you have to consider, if you've built your engine to develop torque between 5,500 and 8,000 rpm, do your gear ratios suit the engine? Does the engine even suit where you're driving? A car with a broader torque range lower down will suffer on a race track, but a peaky engine with bad ratios will suffer on autocross or open roads. Everything is a compromise.
 
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firezy

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firezy

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chillax...

what we discussing here are to max out the 4g13/15. as some mentioned the amt of money spent are better of buying a car that come with bigger displacement engine. each to their own taste, some doing it for fun, for learning, etc. some doing it just to keep the car for a reason.

butt feel or on wheel tuning, etc... end of day, sit on it, feel great of.

from 60+whp to 300whp, it makes me feel way appreciating both rides. I used to curse the 300whp being underpowered, and thinking to rebuilt, forged pistons/conrods and bigger tebu (gtx series) somehow, godsend the old car back to me. in a way that my old man trying to remind me stay humble and be contented.

psst psst... I just gotten myself a weber dcnf 40 NOS... kekekeke...
 

LimauKanker

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LimauKanker

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Aug 27, 2018
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chillax...

what we discussing here are to max out the 4g13/15. as some mentioned the amt of money spent are better of buying a car that come with bigger displacement engine. each to their own taste, some doing it for fun, for learning, etc. some doing it just to keep the car for a reason.

butt feel or on wheel tuning, etc... end of day, sit on it, feel great of.

from 60+whp to 300whp, it makes me feel way appreciating both rides. I used to curse the 300whp being underpowered, and thinking to rebuilt, forged pistons/conrods and bigger tebu (gtx series) somehow, godsend the old car back to me. in a way that my old man trying to remind me stay humble and be contented.

psst psst... I just gotten myself a weber dcnf 40 NOS... kekekeke...
dude, OT, but where do you tune your weber?
 

firezy

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firezy

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ermm...

found a chap that playing dcnf 40... he got his tiuned in N9. somehow he learn a bit or 2 of it. his car in great condition... like some say btek tek kick in. but then his is a 4g15, standard ac pump, and some other upgrades (st flywheel, 8.5" clutchcover, 3puck clutch) bla bla bla...

so now is getting a platform for dcnf 40, put it on. and let him play around with it.
 

LittleWhiteWagon

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LittleWhiteWagon

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ermm...

found a chap that playing dcnf 40... he got his tiuned in N9. somehow he learn a bit or 2 of it. his car in great condition... like some say btek tek kick in. but then his is a 4g15, standard ac pump, and some other upgrades (st flywheel, 8.5" clutchcover, 3puck clutch) bla bla bla...

so now is getting a platform for dcnf 40, put it on. and let him play around with it.
If you want you can find Dwayne from R-Tune garage in mount Austin area. He plays with a lot of classic cars, he might have a few DCNF parts lying around also...
 

alcyon

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alcyon

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sure man, but just because you asked nicely.

Sometimes it is just annoying to see newbies-people who literally knows nothing trying to learn, in the end what they get is vague and general answers which mislead him as well as inaccurate information or some butt feeling from some "senior members". Being a senior member, should've act as what a senior member should be and not mislead new comers with vague information or his ideology. i believe our dear forumner here LittleWhiteWagon already pointed out enough points to underline what are the issues.

I am not axing anyone here, just a friendly reminder to say what you know and dont be shy to learn. In the end, that's what a forum for.
Its very nice of you guys to join this forum today and immediately set the record straight. How nice and thoughtful.
 

firezy

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firezy

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u fellas from JB? R tune Mt Austin.

ok when I got time will pop up and see wat they got.

thanks.
 

LimauKanker

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LimauKanker

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Aug 27, 2018
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Sorry alcyon, i wouldn't even bother to reply to you.

u fellas from JB? R tune Mt Austin.

ok when I got time will pop up and see wat they got.

thanks.
i think i know of which uncle in N9 you're talking about, some uncle goes by the name Abdul Latib kan?

you can search for RTG JB 240Z, if you've been to any of the recent years retro havoc/art of speed, you might remember that 240Z.
 

RENESIS VIII

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RENESIS VIII

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Its very nice of you guys to join this forum today and immediately set the record straight. How nice and thoughtful.
I am truly delighted and grateful for their help in guiding me back into the correct path. I finally saw the past errors of my ways with the sins and lies that I have spread in this public forum. May I repent all my misguided actions in this forum. Thank you LimauKanker, littlewhitewagon, turnturtle and all the efforts from the rest to purify me from my unrighteousness.
 

firezy

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firezy

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ok ok...

thanks for all the leads/contacts/tips/lights...

scroll back 22 years, this islala... wow, I got so many wishlist... now I slowly making it back... if my old man still alive, would have kick my ass for spending such moola...
 

^pomen_GTR^

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^pomen_GTR^

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Carb still around, and as bro gunnerzz mentioned adapter can be made, just like wheel PCD adapter.....lol
The improvement was more to low end as the Accord was heavy. We did to the 3rd Gen Civic and the power was much more felt....

accord with stock carb?

is already fuel guzzler....


adding weber... literally pouring petrol like ppl drinking water in the desert... :biggrin:
 

vr2turbo

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vr2turbo

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accord with stock carb?

is already fuel guzzler....


adding weber... literally pouring petrol like ppl drinking water in the desert... :biggrin:
Original one warp and leaking. Buy another might as well mod to weber. Actually not too bad as mine was a down draft not side draft. Side draft one really pour fuel.....lol
 
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firezy

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firezy

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the dcnf + platform to mount on 2nd manifold in progress. anyway no rush on that. ordered a k&n filter for it, dem expensive.

now suspension. any recommendation? saw online so many, until I also kelapa pusing. my monster using Tein street advanced + edfc.

not sure want I wanted on this islala? saw apm, kyb, etc... asked kyb pro but not for islala. asked gab ss, quoted rm2+k, dunno worth the money for it...

maybe look at some more reasonable setup... hnr spring + koni or Monroe?
 

gunnerzz

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gunnerzz

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the dcnf + platform to mount on 2nd manifold in progress. anyway no rush on that. ordered a k&n filter for it, dem expensive.

now suspension. any recommendation? saw online so many, until I also kelapa pusing. my monster using Tein street advanced + edfc.

not sure want I wanted on this islala? saw apm, kyb, etc... asked kyb pro but not for islala. asked gab ss, quoted rm2+k, dunno worth the money for it...

maybe look at some more reasonable setup... hnr spring + koni or Monroe?
Myself, i will install some chassis bar first. Just 2-3 of the necessary one.This way i can can still keep the stock suspension hence daily comfort is still there. Furthermore bars have no expiry date,service interval and proves to be good investment in term of value and gain. Ori UR bar price is increasing by years.

My own experience, last time i always plan to get aftermarket suspension for my Waja but after installing the front tower bar and lower 4 point bar i wont install aftermarket or adjustable suspension even if i can get them for free. The ride is already firmer than stock.

Then again, its your car, your dream, your target, your taste, and above all...your pocket...heheheh
 

firezy

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firezy

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hi gunnerz,

I'm looking at those as well. HNR just emailed n said no ARB avail for my poor islala... hahahaha...

UR racing ARB thicker than oem by 2mm only. thinking to put front and back. strut bar, put on hold as i'm afraid it will hinder the weber carb + k&n filter.

the oem spring + kyb abs... ermm... cannot tahan... like braving thru Mangkhut storm... asked KYB Pro but do not have any for islala.

saw other brands, Proride + 4flex spring, dunno how reliable are those...