best intake manifold

WestCoast

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WestCoast

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hi guys sorry kept posing similar thread bout intake manifold but is there any1 here who know wat's the diff between mivec intake manifold and GSR intake manifold.currently running on a 4g93p engine and planned to upgrade the intake manifold as well since i oledi have mivec tb installed on my 4g93p.i read a lot of local car moding mag i found out tat some might use GSR intake manifold for their 4g93 while some rather use mivec intake manifold for their 4g93..so what i wana know is wat's the diff between these 2 intake manifolds and which 1 does suit better on my machine? if u guys got foto tunjuk the diff between these 2 intake manifold lagi best la
 

kennethfong

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dunno bout mivec, but GSR intake manifold has a shorter runner so much better for u....

go ah loy sungai ara northern garage lar, they have one custom intake manifold, 100mm throttle body oso can fit.... price also reasonable.....
 

WestCoast

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bro fong tat kinda intake manifold i got c b4 la but price how reasonable oso around rm1200 like tat 1 la..but here got chop shop offer mivec intake manifold rm200 oni lor so cheap tat's y i oni post this thread ask opinion lor
 

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short for high end power.long for low end torque.try check out the design
on b18c from intergra gsr.they have dual intake runner.for acceleration,they
run on the longer 1 while the intake changes to the shorter 1 for high end.
just my 2 cent.
 

boyzone

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u need to seal the map sensor hole if u run with mivec intake manifold.
For my opinion, just remain and re-bore existing 4G93P intake is good enough already.
 

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short for high end power.long for low end torque.try check out the design on b18c from intergra gsr. they have dual intake runner.for acceleration,they run on the longer 1 while the intake changes to the shorter 1 for high end. just my 2 cent.
+1 to that.

check out the runners on a vw golf mk2. these have superb low to mid end stomp.

 

whatdamn

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whatdamn

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if you do consider getting the GSR intake manifold, pls couple it with the GSR cylinder head and a 60 mm MIVEC throttle body and make sure you enlarge the port of the GSR intake manifold from 54 mm yo 60 mm, or else the reduction step would act as a restrictor.

if you can get a hold of the b18c intake manifolds, then get them. but bare in mind that it'll be quite a fiddly job fitting a honda to a mitsubishi.
 

WestCoast

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hi what damn wat u mean is if i wana go for gsr intake manifold then i would have to change the whole engine head as well? wat is tat for? sorry noobie here.. n what if i use mivec intake manifold? can jz simply install it without other mods? cz im oledi having mivec tb
 

WestCoast

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i dun think wana do crazy stuff like type r manifold on 4g93 la i jz wana know if mivec manifold is better for my machine or gsr 1..custom made tat kind aluminium bling bling intake manifold wif short short big big runner 1 oso very nice but price 2 high for me la..hehe..around 500 still can afford lor
 

whatdamn

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whatdamn

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hi what damn wat u mean is if i wana go for gsr intake manifold then i would have to change the whole engine head as well? wat is tat for? sorry noobie here.. n what if i use mivec intake manifold? can jz simply install it without other mods? cz im oledi having mivec tb
it is better to change the head as well to the gsr one since the intake and exhaust ports are larger by 2mm. and since the gsr intake manifold runner outlets are the same as the gsr's head intake ports, you save money on port-matching them to provide increased flow!

like i said, the mivec TB is a good start but its outlet diameter is 60mm whereas the gsr intake manifold is 54mm. so you need to increase it to 60mm to make full use of all 3 major components that bring air into your engine's combustion chamber.

you could port the intake manifold yourself. check out my blog to see the results of the porting. easy to do and minimal tooling required.

need to know anymore, just ask.
 

monmon

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look like westcoast don't quite have the budget for whatdamn's suggestions, indeed they are ideal. so westcoast, if ur question remains - mivec or gsr intake manifold, i would suggest you do neither. you're spending money on something really insignificant to me. Squeezing power out of a 4G93 to me is no fun, but u'll probably have better experience going for a mivec throttle body surely. stuff the intake manifold idea for now.
 

deacon

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I installed both a Mivec TB and Inlet and after a retune of my SAFC and Ignition timing i put down 150whp from 142whp on the stock 4g93p inlet and TB.

Results will vary though... It all depends on your engine setup i suppose.
 

monmon

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150hp is quite incredible, i am guessing this is a speedworks dyno result?
i am not surprised though with safc, itc, throttle and inlet in achieving 8hp, would have expected more. speedworks dyno on a standard GTi would show 121hp. to gain to 150hp, u must have done hell a lot. if u took it to links and hit 150, that would be like a mivec with haltech ......
 

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usually speedwork dyno result is on flywheel not on wheel hp.their dyno
is the same as millennium m.sport if i'm not mistaken.
 

deacon

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Um. It wasn't at Speedworks it was at GT Auto. I drive a GTI with Mivec heads, static ignition 7 degrees, SAFC and a exhaust manifold to 2.3 inch exhaust.

So much for not showing off :(
 

WestCoast

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bro whatdamn u mentioned 54mm for gsr intake manifold so may i know my ori 4g93 intake manifold is how many mm? i havent port my intake manifol and im running mivec tb on my ori intake manifold so tat means i havent unleashed the full potential of the mivec tb rite? if we i wana go for gsr head plus intake manifold will cost how much? n if i stay wif my current head n port my intake manifold will cost how much? jz give me a roughly figure will do.okay thanx ya what damn koko ^^
eh bro deacon by inlet u mean intake manifold ka? u use mivec intake manifold u mean? if use mivec intake manifold we need to port the ori 4g93's intake ports to bigger diameter like using the gsr's intake manifold? (like what bro whatdamn mentioned above)
 

WestCoast

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oh ya bro deacon how u tune ur ignition timing? by using adjustable cam pulley? but if im running on stock cams is adjustable cam pulley necessary? unlike u running mivec head im running stock engine onli..i do have afc neo but i think tat wont tune our ignition timing rite? btw ur monster is very the powderful la broaccording to the hp u claimed..steady man
 

whatdamn

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whatdamn

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the 4G93P inlet manifold has the same 54mm inlet as the GSR, but it also has a runner for the EGR system and has smaller runner outlets (~2mm smaller) than the GSR. for me, i had purchased my intake manifold and head from separate parties so it was RM150 for the inlet manifold and RM500 for the head (non-RS head). anyway, if you wanna port the manifold yourself, you're looking to spend at least RM200-RM300 to buy the tools. i already have most of the tools so to speed things up, i needed to purchase a RM22 rapid cut carbide burr. took me about 2 hrs to grind it to a rough 60mm diameter and then sand it down to 60mm (+/- 0.05mm). so it's actually quite cheap to do it all yourself, but if you've no confidence, i'd suggest you look for a machine shop or a buddy that's willing to do it for you, you're looking around the same if not less from the figures i mentioned earlier to get someone else to do it for you. but where's the fun in that! :D
 

WestCoast

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ohhhhhhhhh icic~
eh bro what damn tat head u bought for rm500 come wif the gsr cams,valves,valve springs,retainers,cam pulley etc from gsr?? the gsr head and 4g93 head got wat diff ler other than the intake port is bigger than 4g93?
 

whatdamn

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whatdamn

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westcoast,
i forgot to measure the valves when i had rebuilt my engine. but it is claimed that the valve ports are slightly larger as well. the only thing that i measured was the lift of the cams and they were the same, i have no idea what was the cam degree.

just to be safe, use your 4G93P cams with the GSR head. all other items are similar from a visual inspection. remember to bleed the lash adjusters. or else you will get that irritating 'tack tack tack' noise when your engine's running.
 

WestCoast

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hmm...tat means the 500 u spend comes with all those head stuff like cam,valves,retainers,cam pulley and all stuff tat is inside the head as well rite?
yo what damn mind to tel me what engine u running and wat mod u've done? willing to learn more from koko ^^
 

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Can all 4g9x series intake manifold be plug and play?? How much diff in size?? Is it worth it in the first place?
 

deacon

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Hmm.

I think some of you misunderstood. Adjustable cam pullies not sure can adjust ignition timing but can adjust cam timing.

Ignition timing can be affected in two ways.

1. by adjusting your distributor.
2. by getting a piggy back computer to do it.

I used a mechanics arm and his wrench and a strobe light to set my ignition timing to static 7 degrees. This HOWEVER does not mean it is properly putting out its maximum amount of power, to do that you need a piggy back to sort the fueling and the ignition timing to get the most out of the engine.

I am using a Mivec intake/inlet manifold. But i am also using Mivec heads on my car not stock 4G93P head therefore the ports on the 4G92 Mivec engine are bigger and they match up (i'm assuming). The intake manifold of the 4G92 Mivec should be around 60mm along with the Mivec throttlebody (need confirmation on this).

Either way once i put the Intake/inlet manifold and throttle body from a Mivec in i noticed a difference but not until i re-adjusted my ignition and fueling (SAFC). I went from 141 to 150 at the wheel horsepower. If i had a full piggy back i might have seen 155 maybe ....
 

WestCoast

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dear bro deacon
u mean the runner outlet of the inlet manifold from mivec is larger than my stock 4g93's too rite? therefore if i didnt change to mivec head can i jz plug and play without bore-ing my 4g93 head inlet port?? yea heard mivec tb is 60mm n my 4g93's stock tb is approximately around 54mm but i jz plug n play (installed mivec tb without any bore job done to my stock inlet manifold oso can wor..jz maybe havent unleashead the full potential) so far i oso can feel car got more POWDERFUL in higher revs.
oh ya deacon koko ur afc cant tune ur ignition 1 ma rite? so u mean u jz simply ask an experienced mech to set the ignition timing for u? wow u taught me sth new i havent heard any of tat and never thought the distributor could have unleash a few more extra horsepower for us too(wont mind if it's very little improvement since it wont cost us anythn to free out horsepower by tat way) heh!!
 

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oh ya bro deacon what do we call that? i mean ask our mech to adjust distributor for us will do? they understand?
 

deacon

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I think Whatdamn answered the questions about the inlet/intake manifold when applying a mivec tb to a 4g93p intake/inlet manifold.

Just ask your mechanic to adjust your ignition timing lah hehe.

SAFC can not adjust ignition but you will need it's help because you will need more fuel if you tune i too high.
 

WestCoast

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bro what damn is using gsr inlet manifold while deacon is using mivec 1..so any guys out there who have pic of both the manifolds to show all of us here wat's the actual diff between this 2 stuffs? any1 willing to contribute to this thread? ^^
 

deacon

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Umm take a look at a 4G93P manifold it's the same as the Mivec manifold but the inside is different lah
 

mengz

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if ur using the 4G93P, it does not have a distributor. therefore you adjust the ignition timing at the cam angle sensor.
 

deacon

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Uh actually no. 4G93P engines do have distributor cap.
 

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GSR intake is slighter shorter and bigger in diameter by few mm.

I've used both intakes on my SOHC 4G92.

Not sure about MIVEC 4G92, but for SOHC version, you need to machine a pc of groumet to close off the EGR jacket at the head.

My 4G92 SOHC engine was Turbocharged, so I went for biggest manifold I could find (MIVEC overbore 65MM T/B + GSR intake)

For NA engines, need to maintain V/E. THerefore, going for the biggest and shortest intake is not that good an idea (unless matched with complimenting cams, extractors, gear ratios, A/F, etc)
 

deacon

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how much did it cost you to overbore your inlet manifold? and how the heck did you manage 65mm on the TB? the guys in NZ can only manage 63mm.. must be a damn pro job.
 

WestCoast

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yo what damn ur so kind to contribute for this thread love ya!
okok i'l be waiting for ur post lah
eh if can get mivec inlet manifold as well lar..hehe.. >.<
oh oh oso measure the diff and state it on the pic thx ya koko
 

WestCoast

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bro deacon we can adjust ignition timing on the distributor cap? izit an easy job to be done? need an experinced enuf mech to do tat? will have any harm or cons to our machine for long term? like side affects? sowee ask so much noobie here
 

deacon

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Umm it's the same as what i described on page 3
 

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GSR intake is slighter shorter and bigger in diameter by few mm.

I've used both intakes on my SOHC 4G92.

Not sure about MIVEC 4G92, but for SOHC version, you need to machine a pc of groumet to close off the EGR jacket at the head.

My 4G92 SOHC engine was Turbocharged, so I went for biggest manifold I could find (MIVEC overbore 65MM T/B + GSR intake)

For NA engines, need to maintain V/E. THerefore, going for the biggest and shortest intake is not that good an idea (unless matched with complimenting cams, extractors, gear ratios, A/F, etc)

waa...joeker,4g92p turbo ar???how much hp u manage to achieve with ur
bot???mind sharing???what turbo r u using???
 

whatdamn

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westcoast,
sorry for the delay, internet was down last night...but anyway, here it is.



from the pics, you can clearly see the different runner lengths and also the additional EGR runner and valve on the 4G93P intake manifold.

pls note that if you do purchase the 93T manifold, make sure you get the bracket that sits between the underside of the intake manifold and the engine block because your original one won't fit unless you machine spacers to fill in the gap in between, almost an inch between it.
 

WestCoast

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bro what damn where is the EGR runner and valve located?
i duno c o sowee...
 

mengz

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mengz

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Uh actually no. 4G93P engines do have distributor cap.
actually bro, its not really a distributor cap as well, because its not distributing sparks to the plugs.

its a sensor which is mounted onto the cam inside the body of a distributor that sends the crank angle position to the ecu which then tells the coils when to fire. so i believe its called a cam angle sensor.

but if im not mistaken, the 4G93 sohc runs on a distributor, correct me if im wrong.
 
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WestCoast

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ah..get it..yo bro whatdamn thanx so much lah u contribute a lot for this thread and wake up early in the morning jz to post the pic requested by me,hu u dun even know n also being patient and kind enuf to gv me the ans for my quest..thx a lot! malaysian rocks ^^
 

Maxx

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i think is not egr valve. egr valve exhaust recirculating valve rite.
if its egr valve supposed there must be some kind of pipe "connecting" to exhaust manifold.

the valve at the intake manifold is to let the engine warm up faster by bypassing some air (idle up/increase rpm) if im not mistaken.

correct me if im wrong. havent research more at my bro's "previous" engine 4g92p. hehe..
 

Joeker

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Maxx,
THe valve located at the intake manifold as explained by whatdamn is an EGR.
THere is no pipe that you mentioned, the head has a small port which allow exhaust to be recirculated into the intake. It is there for emission control purpose.

GT,
235whp, Garett T28.

Deacon,
65mm overbore MIVEC T/B done by a machine shop using lathe and fabricating a new 65mm throttle flap.

Oh, by the way anybody looking for GSR intake?

I've got one stashed away in my inventory.

Mine has mod with 3 auxiliarry brass fittings for bov, boost meter, boost controller, etc. or watever that needs intake manifold signal.
 
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GT_AUTO

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what!!!235hp ar???wa lau.....what kind of ecu r u using joeker?i'm impress
with the power figure.ur still retain ur cc right???can u email me ur engine
pic to me joeker???want to check out ur engine.if u don't mind la.if u do,
it's ok.i understand.