100 series 1HZ extractors

Submitted: Wednesday, Jun 21, 2006 at 20:12
ThreadID: 35158 Views:5221 Replies:8 FollowUps:8
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An old topic revisited I know but if any one out there has actually fitted them and can give some constructive feed back I would really apreciate it
On another point can anyone tell me why Toyota fitted the EGR system to these engines
To my way of thinking feeding the hot exhaust gas back into the intake only serves to choke up any engine .I disabled the EGR today and it made a big difference to the way it pulls up hills , stands to reason I spose
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Reply By: Member - Bill S (NSW) - Wednesday, Jun 21, 2006 at 20:29

Wednesday, Jun 21, 2006 at 20:29
HI Dieselup, Mate what is the fuel usage in kilometers per litre since you blocked the egr system,am interested to hear as I have the same vehicle. Was there a difference before and after disabeling the egr system.And as for extractors there is no point in fitting until you fix the fuel, after you do this yes every point and TOYOTA are learning.

REgards BILLS
AnswerID: 179761

Follow Up By: Member - Andrew W (SA) - Wednesday, Jun 21, 2006 at 20:59

Wednesday, Jun 21, 2006 at 20:59
BILLS,

To quote you recently:

"This Is from BILLS,
What a topic right my alley, As you are all aware I have a 2005 Gxl diesel turbo cruiser"

So you have a 1HZ?
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Follow Up By: dieselup - Wednesday, Jun 21, 2006 at 21:33

Wednesday, Jun 21, 2006 at 21:33
Cant tell you any fuel figures as I only disabled the EGR today
We'll have a run to the Snowy in a couple of weeks and I'll know then as we do the trip regularly
Regards Diesel
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Reply By: Member - Bill S (NSW) - Wednesday, Jun 21, 2006 at 21:05

Wednesday, Jun 21, 2006 at 21:05
SO?????
AnswerID: 179764

Follow Up By: Member - Andrew W (SA) - Wednesday, Jun 21, 2006 at 21:12

Wednesday, Jun 21, 2006 at 21:12
so you probably don't have a 1HZ ... just another minor detail I guess.
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FollowupID: 435947

Reply By: Member - Andrew W (SA) - Wednesday, Jun 21, 2006 at 21:12

Wednesday, Jun 21, 2006 at 21:12
Hi there Dieselup,

I'd be interested in your experience ... if you have a moment, drop me an email andrew@vividadventures.com.au

Ciao for now
Andrew.
AnswerID: 179767

Reply By: mrturtle - Wednesday, Jun 21, 2006 at 21:43

Wednesday, Jun 21, 2006 at 21:43
Gidday Blokes,
What do you have to do to disable the EGR?

I have a poverty pack and would be interested in finding out how it has helped.
AnswerID: 179771

Reply By: Member - Andrew W (SA) - Wednesday, Jun 21, 2006 at 21:57

Wednesday, Jun 21, 2006 at 21:57
Hi there Dieselup,

Essentially that is my question - what is involved in disabling it? A couple of photos would be nice ...

From all I can tell, it is not going to have any appreciable difference on economy (given the age of the EGR system it does not have too much sophistication and certainly no integration with an ECU), and will increase power by increasing the oxygen content in the combustion chamber ...

I'd guess there may be a few legality issues - I can remember back to the old Crummydoor VB days putting ball bearings in emission control systems and suchlike was technically illegal ... but it would be something I'll have to look at.

From all my reading, it's purpose is to reduce NOx emissions by lowering oxygen content and air temp ... which NOx emissions will be very low for my Biocruiser anyways.

It will probably reduce soot levels in the oil too ...

Ciao for now
Andrew.
AnswerID: 179774

Follow Up By: dieselup - Wednesday, Jun 21, 2006 at 22:29

Wednesday, Jun 21, 2006 at 22:29
You hit the nail on the head with the ball bearing!
You have to stop the vacuum going to the diaphram on the intake tube above the exhaust manifold
Exhaust gas feeding into the intake will lower the oxygen taken into the intake but it will drasticly increase the intake temperature meaning the air is less dense
That's why intercoolers are fitted to to turbo engines- to cool the intake air and it becomes more dense -more air ,more fire!
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Follow Up By: Member - Andrew W (SA) - Thursday, Jun 22, 2006 at 11:13

Thursday, Jun 22, 2006 at 11:13
damn ... I don't seem to be able to find any EGR on my 1HZ (1998 LC105).

There is nothing apparently coming out of the exhaust manifold, or headed into the inlet manifold that I can see that looks remotely like an EGR. I know what it looks like on bigger engines, but for the life of me can't see one on mine.

I looked in the Gregory's Service Manual and it has a blank chapter 8 (Emission Control) with a note saying it is not applicable to this vehicle.

Can anyone shed any light on this, or put up a pic of the beastie ... so I can see if I need to change my glasses?

Ciao for now
Andrew.
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Follow Up By: chump_boy - Thursday, Jun 22, 2006 at 13:11

Thursday, Jun 22, 2006 at 13:11
Andrew - can't see one on mine either, but then again, I don't really know what I am looking for.

BTW, I have exactly the same vehicle - 98, 1HZ GXL 105 Series.

Cheers,

Chump
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Follow Up By: Member - Hughesy (SA) - Thursday, Jun 22, 2006 at 20:15

Thursday, Jun 22, 2006 at 20:15
Only come in on the 2003 models and later. AFAIK. You can't miss it - its looks very different between an engine with it fitted and the ones without.
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FollowupID: 436129

Reply By: Mikee5 (QLD) - Thursday, Jun 22, 2006 at 17:47

Thursday, Jun 22, 2006 at 17:47
I have fitted a Beaudesert Exhausts 2.5 inch mandrel bent stainless exhaust to the back of Genie Headers to my pov 1HZ. The headers have no provision for the EGR pipe so I made a blanking plate to cover the hole in the inlet manifold. As for power - I can feel the difference, people reckon you need 25% more to feel any change so make your own minds up. Economy - I am driving it harder 'cos it is fun, economy has gone from 11.7 to 11.2, I guess it will improve even more than this when I settle down. There is very little change to the noise outside and almost none inside when driving. Altogether I am rapt.

Mike.
AnswerID: 179919

Reply By: Member - DOZER- Thursday, Jun 22, 2006 at 19:19

Thursday, Jun 22, 2006 at 19:19
Value for money...the extracters dont make much difference for the $$ spent...a turbo on the other hand, makes heaps of difference in the "seat of the pants" aswell as outright torque....i would recommend you remove the large muffler for a straight through one, or a turbo muffler at least, which will free up the flow a bit....remember to get the pipe replaced over the crossmember behind this muffler, as it is squashed from the factory....you can fit up to 3 inch through there without a problem.
Andrew
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AnswerID: 179937

Reply By: atoyot - Thursday, Jun 22, 2006 at 21:15

Thursday, Jun 22, 2006 at 21:15
My 2000 1HZ has Pacemaker mandrel bent extractors and a 2.5 inch system with turbo muffler. I recall that when I got them fitted, seat of the pants feeling was that it pulled heaps better, got rid of the "it's running on four cylinders" feeling at about 2400rpm, and make little difference to the fuel economy. I didn't want to overcomplicate things with a turbo, but I would have loved the extra power. My feeling is that it was good value for money ($800 - $1000) for probably 10 - 15% more torque, but I'd only be guessing. Should've dynoed it. Whats a turbo install cost now - at least $3000 for 30 - 40% increase; about line ball in value methinks.

Also, I was going to go for a 3" exhaust, but was warned off with only a marginal increase in power for significantly more noise being the reason. I'm used to the slight increase in noise now, so I could probably wear it now.

Andrew
AnswerID: 179955

Follow Up By: dieselup - Friday, Jun 23, 2006 at 21:55

Friday, Jun 23, 2006 at 21:55
Gday Andrew
I had a set of Advance headers and 2.5" system fitted today and from first impressions I'm pretty happy with the result
We'll see in a fortnight on the next long run how it goes
Cheers Diesel
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