4AGZE Extractors

[aesc]

Hi, well Im looking at buying some 4>1 extractors for my GTZ and I have found a couple of sets however im not sure about what size the primaries and outlets should ideally be.

1st set has 1.5' primaries with a 2.5' outlet.
2nd set has 1.5' primaries with a 2' outlet.

Is a 2' outlet too small for a fairly standard GTZ? I plan on getting a mandrel bent front pipe also say to the flexi then its 2.25' back after the flexi. Which set would be the best to go for?

EDIT: Also does anyone know what the standard flexi size is for a GTZ?

Thanks

[Mr Revhead]

to be honest i doubt they will improve over the stock ones much.

4-1 are best for the top end 4-2-1 are best for midrange, for a road car a strongly recomend 4-2-1.
2 inch would be ok for a stock ones, 2.5 would still be ok, wouldnt go any bigger though

[Volatile]

Na, go 4-1 if your going to get any at all,

Don't worry bout the mid-range GTZ's have enough guts down low the top end is where the improvement is needed

[Mr Revhead]

yeah but you need to be able to use it... how much time does the engine spend at 6000rpm?? cause thats where 4-1 will make a diff.
as his cars a road car hed get more benifit (if any) from 4-2-1
but i still say they probably wont make enough difference to justify the cost.

[Volatile]

yeah but you need to be able to use it... how much time does the engine spend at 6000rpm?? cause thats where 4-1 will make a diff.
as his cars a road car hed get more benifit (if any) from 4-2-1
but i still say they probably wont make enough difference to justify the cost.

each to there own i guess... if people didn't spend time up at 6000rpm why do so many people own DOHC vtecs? most of there power is found above 6,000rpm and most owners will it admit to hitting 8,000rpm at least daily.

Anyway i agree with you about headers being worthwhile or not

[EVLGTZ]

each to there own i guess... if people didn't spend time up at 6000rpm why do so many people own DOHC vtecs? most of there power is found above 6,000rpm and most owners will it admit to hitting 8,000rpm at least daily.

Anyway i agree with you about headers being worthwhile or not

umm yeah but this is a GTZ and in std form theres less power above 6000rpm than there is below it. I still reckon cud be worth doing on a GTZ though.

Charlies old GTZ only had extractors, zorst and CAI setup and his car put out more on the dyno than any other the other GTZ's at the last toyspeed (Auckland) dyno day.

[aesc]

umm yeah but this is a GTZ and in std form theres less power above 6000rpm than there is below it. I still reckon cud be worth doing on a GTZ though.

Yeah i think its worth doing, and I plan on doing that sqaushed up pipe that goes over the cross member too with a mandrel bent jobbie. It wont end up being all that expensive, maybe $400.

GTZs need all the top end power they can get. Got mine dynoed at the weekend and the power loss after 5500rpm is embarrassing!

[Fred]

i sure hope its worthwhile, i just bought some mandrel bent extractors a few days ago, gona put them on b4 further conversions to see if they do make any difference.

see on ur profile aesc that u got 9psi, spending the 400 dolars on a 175mm pulley will get u boosting another few psi and that wud make a big and noticeable diference in comparison to extractors, and also the front mount wud prbly also have a more noticable effect.

[Bazda]

if u aint got a pulley kit i suggest u do that first cos thats where your going to feel the most different for the dollar.
after that u can then go buy 4-1 extractors and prob some bluetop cams to help with teh top end oh and plus a front mount .

everyone whos got a fast car will spend alot of time up high in the revs

[aesc]

see on ur profile aesc that u got 9psi, spending the 400 dolars on a 175mm pulley will get u boosting another few psi and that wud make a big and noticeable diference in comparison to extractors, and also the front mount wud prbly also have a more noticable effect.

Let me know if you feel any difference with the extractors Fred.

As for the pulley and front mount, I have both got them in my future plans. Ive got a VR4 intercooler sitting here at home, just gotta get it mounted and plumbed up. After that ill get the pulley.

if u aint got a pulley kit i suggest u do that first cos thats where your going to feel the most different for the dollar.

I fully agree on the pulley kit being the best 'bang for buck' but i was going to put extractors on it either way so might as well do it now as the person who is doin my i/c is a bit busy for the next few weeks anyway

[Bazda]

we should stick them on this weekend fredo

[Fred]

sweet as barry, this weekend it is