Just asking can i change 4g92 single cam to gsr twin cam? Is there any problem will occur if i swap this head? Any comment or suggestion.. Thanks you in advance.

Not worth it. Tried it 10 years ago.

I tested this swap with my 4g93 1.8 single cam. The sohc ecu might not support it so well, I ran into engine response and drivability issues
At +6000rpm, basically it feels it is running out of air and fuel.


Eventually I put back my ported single cam in. The low rpm torque response of the bigger block (I had 1.6 high comp pistons) is so much better...you get almost all your torque by 3500rpm vs 5000rpm.on the twin cam, which means city driving and mountain road driving is all that much better. Don't forget the sohc head is lighter and has less parasitic losses, so the engine, with lighten flywheel, actually feels more lively.

If you are not adverse in doing an engine swap and registering, just drop in the 1.8 sohc. It's very cheap. Direct drop in.

On my lightened satria (950kg), passengers comment my car feel turbocharged due to that instant torque response. I recorded about 7.5 to 100, which is faster than the 4g93 dohc in the (albeit, heavier) satria GTI

This post has been edited by jaycee1: Jan 22 2020, 12:43 PM

I am new to this car modification. Just bought wira a/b 1.6 xli.. Thinking to swap to dohc instead of soch. My mechanic say if swap with 1.8 gsr dohc will have problem with the tappet lifter. He say its better to put use td04l turbochargers.

dun waste time and money to swap dohc.

u want more power just swap halfcut 1.8 turbo gsr.

Gsrt kinda pricey for me. Plus my wira is auto not manual.

you will need to swap the ecu / retune with piggyback ecu (cheaper opt)
any reason why you wanna swap this cam?

Reason? I think dohc provide more power to 4g92.. I want to unlock the engine potencial i guess. Plus will be driving long distanse for this car..

but why auto tranny..? intel atom processor type transmission, super delay on gear change.

u dun spend money for gaining those 1% power…u might better spend the money to change the whole exhaust system from extractor to muffler, or/and better tyres.

back to the point…ask yourself where does n.a engine gets power from?

u need bigger displacement for more fuel more air.

Will be sharing car with wifey later.. She really dont drive manual... I dont really want to make super duper 2++ bhp machine... Just a normal car that have maybe a little bit of power than normal car.

I think i will be installing turbo but i didnot really understand ur point about bigger displacement.. Care to explain.. Sorry i am really new to this modification actually..

very insightful and straight to the point

If can i really dont want loud type exhaust.. If cant then i think no choice..

You don't necessarily need to be loud to be fast.

I think there's lots more you need to do research on before deciding, that's the fun part.

Have fun with your build bro.

Cared to give me some pointer sifu. Help la newbies wanna learn..

one of the engine restriction is exhaust
catalytic converter and muffler.
muffler is silencer, just change some performance and quiet muffler and catalytic converter will feel immediate gain. not much.
if you dont wanna spend much and gain power, exhaust is one of it. below RM1k.
stuff like air intake / open pod wont give you much.
google some stuffs and you'll know alot more.
goodluck modding

I really wanna learn but i dont have anyfriend that can help me with this car modification... View some on youtube but dont really understand half of what they saying... Its like watching greek movies without any subtitles... Maybe the exhaust will be the last mod after i finishes the enginebay..

Remove restrictions in cylinder head
Bigger throttle body
Upgrade the whole exhaust system
Change the camshaft
Pulley, flywheel

It’s never ending when it comes to modding your car.

If TS doesn't want to spend endless money to upgrade your current engine, just go for 4G93, higher CC = more torque & power.

Turbo setup is not cheap either and it will required exhaust modification. Apart of that, turbo maintenance is totally different from a NA engine especially long distance travelling.

Remove what restriction in cylinder head.. Heard some mentioning on compresion ratios... What was that?