extractors for landcruiser 4.5ltr

Submitted: Tuesday, Feb 25, 2003 at 21:32
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I have a 2001 100 series 4.5ltr petrol and was wondering if anyone has any ideas or information on weather it would be worth fitting a set of extractors with a 2.5" exhaust for better performance and fuel economy? Would the cost of doing this be worth it?
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Reply By: tour boy - Wednesday, Feb 26, 2003 at 06:58

Wednesday, Feb 26, 2003 at 06:58
If it is factory fitted like the 80 series, it has them standard. The 2.5 system will cost $300-$350 approx from exp. Economy will improve slightly, so will power - unless like me you give it a bit more juice because it sounds great.
AnswerID: 13963

Reply By: Truckster - Wednesday, Feb 26, 2003 at 10:31

Wednesday, Feb 26, 2003 at 10:31
This is like Diesel/Petrol Auto/manual Toyota/Nissan Etc..

Some say yes gives me 400hp.. others say it doesnt do crapola.

I installed some on my GQ, and it did nothing, sounded marginally better, but others say they have put them on their GQs and can smoke up 44's..

Personally, I would save my coin for a Turbo(which I ended up with! So did the bloke I sold the extractors too!)...

If you install extractors, you need the exhaust, which all up is no change from $600-1000 depending on what you do and want.

And as the other bloke said ends up you stick the slipper into it more to hear the noise more than power and then you lose economy!
AnswerID: 13966

Reply By: Suzuki Viagra - Wednesday, Feb 26, 2003 at 10:47

Wednesday, Feb 26, 2003 at 10:47
I fitted extractors because the Suzuki headers normally crack. Mine had and been rewelded, but the bigger problem was that the exhaust studs were constantly making themselves come loose, meaning reassembly of the exhaust with new gaskets after every 4wd trip if you wanted the damn thing to run properly...

I wanted a full sports exhaust system, but was recommended against it, with the shop claiming that I'd lose back pressure and thus torque.

My understanding of this is that a free-er flowing exhaust (say 2" instead of 1 1/2" stock) will generate more power everywhere for less fuel.

After I've got it rego'ed up here in sunny queensland then I'll get a full sports system - by then I'll probably have crushed the rear muffler again on a nice big rock.

Extractors without the full exhaust system being changed make little difference. Change the whole system or don't bother, or better yet fit a turbo.....

AnswerID: 13969

Reply By: bmw1 - Wednesday, Feb 26, 2003 at 13:07

Wednesday, Feb 26, 2003 at 13:07
Try going for a larger diamater exhaust first. I did and while fuel economy did not improve much it had more power, oh and get rid of the muffler for a more free flowing one.
AnswerID: 13984

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