have a stock 03stivo.

i want to get ported headers

reason :cheap bang for buck - gives more low down response, a more free revving engine. is this true?


how will it go if this is my one and only mod ?

I'm Curious as to why you think this is a cheap "bang for your buck" mod?

CAI, would be by FAR the best BFYB mod to do on the stivo. for around $300 - $400 you'd be mad not doing that... with approx 10kw atw gain.

Sure it may only cost $200 to get your headers ported.... but are you removing/installing the headers yourself?

i would suggest labour could set you back around $100 - $150.

for only 5 - 7kw atw gain... i know wher i'd spend the money for my One and Only Mod.

[quote name='Blind Kid Seeks' date='Oct 14 2009, 03:43 PM' post='355203']
I'm Curious as to why you think this is a cheap "bang for your buck" mod?

the reason i say this is that i hear an airbox without a snorkel is 2/3 the performance gain of a cai.

and im not after just Kw i like the idea of having a engine that revs free'r low down. which the ported headers apparently provides.

hmm interesting ! hmm my car is off the road for 2 months and 3 weeks now, i wouldnt mind doing this, i got my cai.. where can i get my headers ported if i remove them myself and roughly how much, and is there a real difference in power? worth it or leave it?

o and wil this fit the 2zz-ge 05 model???
CLICKY!!

Definently worth getting done, makes the car that much more better/easier to drive. It feels so much more free flowing after 4k. sorry but i cant really remember how much but i think i paid 300 n something to do a swap with ported headers. but that was about 1 yr or more ago.

Got it done at westside mufflers in padstow.

I am fully stock except for ported headers and de-snorkeled intake, and I reckon I make almost as much power as when I had either CAI on there.
Guni bird has quieted the haters by posting back to back dyno figures on the same day and on the same dyno with CAI vs CAI vs CAI vs no snorkel.

Anyhow, even without the de-snorkel mod, the ported headers make the car feel generally more like a 2L than a 1.8L. More torque down low. I love it!

Gav.

is it easy to port headers? i got a die grinder !! lmao ...

Woohoo, starting up another CAI thread = massive amounts of FAIL!
With the Headers, by what i have experienced, (nothing with headers btw) you need to look at
1. If it really IS the cheapest option (which its not)
2. A Cold Air Intake may give you a tad less power down low, but your torque 'should' slightly increase, and top-end will be alot better.
3. A CAI opens up the restrictions of the stock Airbox, no matter what people say, after i put my CAI on, i am never reverting back to the stock box...
4. Headers aren't the most important mod, CAI and Exhaust is for the Sportivo... Headers are an add-on for this set-up later down the track.

Good luck, but keep in mind, its YOUR money and you do what you want with it (by an sc ).

Evo

Its been something that i would like to get done to my car too. hmmmmm decisions decisions

Giving suggestions for mods you don't have or even have the engine for = FAIL? TRD CAI performs very differently to CES CAI too BTW...

I got exchange ported headers without HPC coating from CES for $330. They are the only mod I have that hasn't disappointed me!
De-snorkle is OK too. It's free, and gives you reasonable power gains that aren't just foolishly established by added induction noise.
Lots of mods are going to make you noisy, but that doesn't necessarily equate to being faster or more powerful. Look at Guni's dyno results.

Tasteful mods FTW,
Gav.

for those in melbourne, a place called head 2 head in oakleigh does ported headers fitted for ~$300 google it.

yer yer its not gona give me 3.65333Kw at the rear wheels with a head wind of +7kmph on a cool 20 degrees day with bp premium and 95% tread on my pirelli's - but i dont give a stuff.

just want that low down power gain and free flowing revs

and after reading what i just wrote...i realise i dont have a rear wheel drive car.. oops

Don't get a TRD CAI then! However the TRD CAI is the most fun when you hit lift.

I dont think these headers/ extractors are made for 2zzge. i had a close look comparing the 2 but the 'bolts' on the Redback dont match the locations of the 'bolts' on the 2zzge

have a look and tell me what you guys think..

Click to view attachment

Click to view attachment

Andrew,

peter wont fit them mate... he only does porting.

i was the person who introduced Head 2 head to the 2zzge header porting game....

and what a good introduction it was Andy.....great mod

For DIY porting, you need a good die grinder, some good HSS or Carbide burs and a couple of 80grit flap wheels to fit the grinder.

Port the header to be a bit less than 1mm larger than the exhaust port in the head (to help with reversion), then finish off with the flap wheel.

You will need a long shank bit to clean up the collector. Also need a very steady hand as it's easy to make a mess with sharp bits.

also as a tip use the old Gasket as a guide.

the hole in the gasket is actually much larger than the exhaust port on the head...

It's best to take a stencil of your actual exhaust ports and work from that.

much larger??

interesting.... would be good to get a comparison... anyone with a spare set of headers.... looking at you dyslexik

here you go, the carbon ring around the ports shows the hole size of the gasket...

I have an exhaust, which is supposed to produce a lot more power than headers, which it feels on the street, take it to the track, no good, just too much power for a non LSD car, and yes, a driver with too heavy right foot.

Reckon headers would be a bigger waste IMHO

whitestivo

10 kw atw wheels from a CAI???? get your hand off it.

who are you quoting? I don't see that anywhere.

you dont port match the header - the header should be larger than the exhaust port. use the gasket as your template, for those who are unsure about portng join some portin forums and read the basics.

Learn to read...

learn to port! match to gasket or you will create unnecessary turbulance.

Your both right in the aspect that it should be larger, but how large?? around 1mm to the exhaust ports sounds good to me, too large a port and you will drastically increase the turbulances due to a larger step change. I think CHA54 is saying that the gasket is too large in this instance compared to the exhaust ports....

Hahaha, dude, hence "learn to read". you're doing it again.

Have you connected the dots yet?

god, some of you are dumb. i shouldn't have to spell everything out, we all know about reducing the chances of flow reversal and the step helps scavenging - so your saying you will have the header and gasket different sizes - have a day off. now who's the silly one - who cant read. another point - your average installer wont know to centre the header and gasket and just rest it on the studs (i use drill bits to centre the bolt hole on the stud) before tightening, if you only enlarge by 1mm................. think about the rest of the sentence or do i have to fill all the gaps

sorry better stick to the threads you can handle - which cai should i get, its been 2 threads since someone asked

we can all be smart sheilas.

CHA54 is saying to take it out 1mm over with the die grinder and then finish it off with something else to get a tidier job. So it will be more than 1mm larger than the port when finished! How much so I don't farken know? But if you look at the photo provided on the previous page, you only have less than ~2mm before you meet the gasket...

While you're handing out advice, I think you should stick to being a dumb arsehole, since you're really good at it. Go back and RTFM on people skills...

Gav.

I actually turn up alloy sleeves to go between the stud and the flange hole to perfectly center the header on the engine...

I install them in the two outermost bolt holes, works a treat.

bit more polite than your original quote. as you clearly dont know what your taking about you should GTFO as you so eliquintely put it. put your e warrior pants back under your trousers - and maybe you should rtfm on porting as you have made youreslf look very stupid when challenging someone who does these and DOES know what he's talking about.

you can always tell an aussie - you just cant tell him much! i think that saying applies to the likes of you.

by all means carry on with your inferior ported header - knowledge is horse power!

Alright, I will put it back. FFS, GTFO! I had removed those acronyms since I thought I was getting mud on my hands and lowering myself to your ignorant dumb fark level.

You've been a total arsehole since you're first post in this thread. And out of the ppl who have tried to illustrate to you that CHA54 [who does know how to port, I've never claimed to know how to port you farken turd] was suggesting a 2 part process for the porting - the first part being roughly taking it out 1mm with the die grinder, and then following up with a flap wheel - you've taken the greatest objection to me, and insulting me with my CAI comments [something I do know something about you POS]. I guess I did the best job at showing that you're a dickhead? Happy to oblige.

Now to reiterate for everyone reading this. AE102 has farked up by missing that CHA54 said 1mm + [PLUS, EXTRA, MORE, IN ADDITION TO] finishing off with the flap wheel [you've got less than 2mm to work with now...], and is trying to save face by by having digs at me and insulting my choice in clothing, and now all of Australia... Why don't you go fark off back to your UK.TOCAU and have digs at that guy with the nitrous in his car. That's your bag isn't it? FFS, you're splitting hairs over 1.5mm and 2mm, and making yourself out to be some authority on many things in the process... Tell me how many kW are in that last 0.5mm, assuming it's there to be used even? The whole porting process only yields 3-4kW ATW on the CES dyno...

I'm really sorry you are such a douché, and I hope the other Australians don't liken you to your countrymen as you have done with me/us.
Gav.

Listen to my friend Nic Cage.

chicaboo... sooo who wants to port my headers? lol

yeah no chance!

I got like 12kw from a full exhaust and CAI

Sent them to me and Ill do them for $100!

Sheesh!! I take a few days off this forum and all the keyboard warriors come out in force LOL

Everyone back off and take a long hard look at what you post up. Or someone will be getting a holiday from here.....

It's a shame that there are so many on here who seem to know it all and are trying to reinvent the wheel so to speak!!

Ported headers have been around since I got mine done waaaaaaaaaaaayyyyyy back in late 05. Old news for those thinking it is something new LOL

You will get a small increase in peak power(3-4ish kw like Gav said) but will get a huge increase in low to mid range torque and drivability which is what the 2ZZ lacks. It will make your car soooooooo much nicer to drive as a daily driver in peak hour traffic as you won't need to rev the engine as hard in each gear before changing up and also less changes as the engine does become more tractable at lower rpm in taller gears.

FYI regarding Kw increases on a CAI..... i got a 9kw increase with cat back exhaust, then added a CAI and netted another 6kw, then added the headers and got a nats turd under 4kw peak power increase but the torque hole between 4-6k is almost non existant and the engine makes more power right through the rev range which also makes the transition onto lift a lot less of a jump.

Play nice kids or the "red" button may come into play!!

Cheers

SB

Wat? Do U take em out after u've tightened the others? They're drilled bigger so the flange can expand under heat and not crack. Every car is like it.

What do you think is going to crack? the 2zz flange?? Have you looked at the flange thickness at all?

The first set I did have been on a daily driven car that has done 27,000km over the last 3 years, daily driven... So a ton of heat cycles and no cracking problems...

The headers are a bitch to get back off the engine after 10,000 or so km, but they're nicely centered.

The flange def won't crack. Sorry, I meant warp. The flange can warp wen it strongly needs to expand and can't. That's why every car manifacturer uses a couple of small inner holes to hold it and bigger outer holes to allow expansion.

not sending them to new zealand

Any good places in perth to port headers?

take pics of the stock headers or ported ones?