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Location:
Brisbane, QLD, Australia
Registered:
May 2002
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Tuning for 98ron
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Fri, 24 May 2002 11:13
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How hard/easy is it to tune my car for 98ron fuel?
Can I do it myself? Or do I have to take it to a mechanic?
Is just advancing the timing on the distributer all that is required?
If so, can anyone tell me what to 'tune' it to?
Sorry for all the questions lately, I just think of something and ask because I want to know.
I'm starting to get more 'intimate' with my car now. I'm going to do the next service myself. Stuff paying $150 for logbook services on a 7 year old car. WAY out of warranty. 
(I used to do everything on my old corolla, so I'm not totally new to this, just a bit warey of these new efi fandanged things).
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Tuning for 98ron
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Fri, 24 May 2002 11:39
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pretty much the timing... whats the advance at now?
go buy a tank of good fuel (like mobil hehe  ) get a timing gun and advance things a couple of degrees. go for a good hard flog with a warm engine, and at peak load, full throttle, listen for detonation (like shaking rice in a tincan). if you dont get any pinging, stop the car and advance the timing some more. keep advancing the timing till you can 'just' hear detonation begin right at max load, then go back and retard the timing 2 degrees.
thats about it.
while youre at it, why not shut down your egr, put a catchcan on your pcv, and f-ck off as much emissions as you can.
cheers
ed
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Location:
Brisbane, QLD, Australia
Registered:
May 2002
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Re: Tuning for 98ron
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Fri, 24 May 2002 11:48
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The timing is at stock. I dunno what it is. Thanks for the info.
| ed_ma61 wrote on Fri, 24 May 2002 9:39 PM |
while youre at it, why not shut down your egr, put a catchcan on your pcv, and f-ck off as much emissions as you can.
cheers
ed
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Tuning for 98ron
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Fri, 24 May 2002 12:06
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egr: exhaust gas recirculation... basically feeds your engine its own poo instead of air and fuel. also its hot, and can give you premature detonation. though, it also adds dead space to cool the mixture... i hate it anyway, plus itll make the rear cyl hot from blowby.
pvc: positive crankcase ventilation. makes sure the block doesnt get pressurised, and pushes oil into the cyls. also happens to suck oil into the intake manifold...lovely. a ctachcan just catches the oil.
grab a manual, and have a look at what i mean, and how it works. basically involves blocking some vaccuum lines.
cheers
ed
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Location:
Brisbane, QLD, Australia
Registered:
May 2002
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Re: Tuning for 98ron
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Fri, 24 May 2002 12:16
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| ed_ma61 wrote on Fri, 24 May 2002 10:06 PM |
egr: exhaust gas recirculation... basically feeds your engine its own poo instead of air and fuel. also its hot, and can give you premature detonation. though, it also adds dead space to cool the mixture... i hate it anyway, plus itll make the rear cyl hot from blowby.
pvc: positive crankcase ventilation. makes sure the block doesnt get pressurised, and pushes oil into the cyls. also happens to suck oil into the intake manifold...lovely. a ctachcan just catches the oil.
grab a manual, and have a look at what i mean, and how it works. basically involves blocking some vaccuum lines.
cheers
ed
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Ok cool. I'm definatly considering getting a manual for it. I take it a gregories or whatever from an auto parts store manual would suffice?
That pvc, would it be similar to what the old corolla had?
IE: hose from cover->airfilter that carried air/oil.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Tuning for 98ron
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Fri, 24 May 2002 12:29
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blah, im a dickhead, not pvc... 'PCV'
ahhh anyway...
yep, from valve cover to intake somewhere
gregories, haynes, or get the factory manual from tyota ($ or even off ebay.
cheers
ed
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Location:
Brisbane, QLD, Australia
Registered:
May 2002
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Re: Tuning for 98ron
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Fri, 24 May 2002 12:40
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I'd LOVE to get a full toyota workshop manual, but yea, $$$.
I am talking about my camry for the majority of this timing thing. Just to clear any confusing there may be. I take it those things hold true to any engine regardless?
Again, thanks. I'm learning.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Tuning for 98ron
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Sat, 25 May 2002 01:35
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I'm looking at doing this too, got the great 45kW challenge. Thanks for the explanation ed. Lucky for me, I have EVERY Toyota manual I think for the RA60. 
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Location:
Hobart, Tas
Registered:
May 2002
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Re: Tuning for 98ron
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Tue, 28 May 2002 01:23
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Not ALL emmissions stuff sucks HP. From what I hear on the OCC, some may make a little difference, some may improve things and some makes no difference either way.
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Location:
Hobart, Tas
Registered:
May 2002
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Tuning for 98ron
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Tue, 28 May 2002 02:44
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ok, yeah... ripping off emissions is illegal...
egr is only disaled at WOT if its actually working correctly...
regardless, it still heats up the back of the rear piston: bad
egr basically adds dead space to the cyl to prevent more combustable material from getting in there, supposedly keeping temps and detonation down. ive found it's quite hopeless at doing this, and more improvement was made through good fuel, and proper tuning, prventing major lean mixtures, and hot cyl temps.
as for egr's role in reducing emmisions... no argument there. however, if you tune the car right in the firstplace, your emissions shouldn be too bad anyway
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Location:
Brisbane, QLD, Australia
Registered:
May 2002
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Re: Tuning for 98ron
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Tue, 28 May 2002 04:13
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I don't know how it would heat up the back of the rear piston. I've got a e-w engine config.
I finally got a haynes manual on the weekend. Damn it's packed full of good stuff.
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