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Location:
Sydney
Registered:
July 2005
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Running premium with 1s-ci
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Wed, 27 July 2005 04:40
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hi guys.
I have a sv20 1989 manual Camry.
Is it possible to advance the timings to get a little more power running premium? We run premium anyway bcos its cleaner and runs a little smoother, but I think the timings need to be advanced to get better fuel economoy and maybe a few much-needed extra kw?
Im pretty certain a 1s-ci wouldn't have a knock sensor?
If so, is there any benefit in running the 98 octane stuff over the 95 stuff?If its possible, can i just get a local mechanic to do it (adjust the timing that is)?
I went to one of the local mechanics about an unrelated matter, and asked him about premium. He said "no, premium gives better economy but not more power" and gave a shrug when i asked him about advancing timings.
ALso would replacing the airbox filter element with a k&n element give a little more power? every bit counts 
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Location:
Epping, Sydney
Registered:
April 2003
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 04:51
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A camry with a 1S ay, interesting.
I would say, running premium will allow you to advance your timing marginally. This will lead to more power, and anything you do to improve the engine's 'breathing' will help free up the rev range.
I imagine that your economy will be better on premium, usually this is the case.
But you need to be very careful not to advance your timing to the point where it is knocking. You can listen for this in say 4th, going 50 or so up a slight hill.
This is my experience and knowledge anyway and I have no problem being corrected 
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 06:14
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You sure its not a 3S-FE or 2S-E?
Even SV11 Camry's got 2S-E's
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Location:
Epping, Sydney
Registered:
April 2003
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 06:17
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In Russia Camrys had 1Ss I think...
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Location:
Sydney
Registered:
July 2005
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Location:
Central Coast, NSW
Registered:
February 2005
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 06:28
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look at the engine, you should be able to tell if it's a twincam or not
or take a photo for us to look at
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Location:
Sydney
Registered:
July 2005
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 07:24
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OK its definantely a 1s-ci on the engine plate. "1800ml 1s-ci 07/88" (oops remembered it being 89)
So how do i go about advancing the timings? Is there any benefit in tuning it for 98 octane fuel over 95? How much of a power increase should I expect? Even 2-3 kw is worthwhile..I need every bit
Also Im looking into making a ghetto CAI..any ideas on how to do it cheaply with this particular car/engine? What if i just replace the filter element with a sportier version? What if i just disconnect the airbox and attached piping and just put a stocking over the pipe before the throttle body? Even if that would work im thinking it isnt legal?
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Location:
Montrose, VIC
Registered:
May 2002
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Location:
Sydney
Registered:
July 2005
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Location:
Sydney
Registered:
July 2005
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 11:02
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No one can tell me how to advance the timing? 
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 11:04
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Turn dizzy as per a normal engine...
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Location:
Sydney
Registered:
July 2005
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 12:08
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sorry im a bit of newb, what's a "dizzy"? Distributor?
I have a reasonable idea of basic mechanics but tinkering under the hood beyond changing the oil etc is rather new to me (Im a P-plater on my first car).
Sorry to be an inconvenience, but if someonee could point me in the right direction to a guide or something I would appreciate it
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Running premium with 1s-ci
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Wed, 27 July 2005 12:17
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Go buy a Gregorys Manual for your car/motor
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Location:
Sydney
Registered:
July 2005
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Re: Running premium with 1s-ci
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Thu, 28 July 2005 07:00
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Actually a couple of weeks ago I borrowed one from my local library but couldn't find anything on "advanceing timings" or similar, but I skimmed through it pretty fast. Will have a closer inspection next time round.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Running premium with 1s-ci
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Thu, 28 July 2005 07:04
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Just look up and read the section on Setting the Timing.
Its probably under a Tune Up section or something.
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Location:
Montrose, VIC
Registered:
May 2002
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Re: Running premium with 1s-ci
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Thu, 28 July 2005 07:05
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Look for the bit on checking/setting 'base timing', it tells you how to loosen the bolt and move the dizzy - otherwise, why not offer someone a beer if they come take a look at it for you.
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Location:
Sydney
Registered:
July 2005
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Re: Running premium with 1s-ci
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Thu, 28 July 2005 11:27
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Thanks, I think ill borrow the gregorys from the library again and see if i can do it myself, seems a pretty simple/straightforward thing. Is there a specific setting for 95 and 98 octane? Or it a case of trial and error to see how far i can advance it before it knocks?
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Location:
Sydney
Registered:
May 2002
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Re: Running premium with 1s-ci
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Thu, 28 July 2005 22:44
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I think I have the gregory's book if you want to buy it off me for $15... It's been over 3 yrs since I had the Camry... so it's not doing anything. However, I "don't" think the Gregory's cover the 1S-Ci motor but definitely the 3S-FC and FE models.
Basically, there "might" need to short something on the diagnostic plug (if it has one) and then link the timing light to the first cylinder spark plug lead and power the light with the battery. Start it up and then adjust the distributor (after loosening it of course) whilst checking the timing with the light.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Running premium with 1s-ci
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Fri, 29 July 2005 00:43
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There are 3 SV21 Gregories books, and only the one pictured above covers the 1.8L
I am presuming that the 1.8L is the 1S-Ci
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Location:
Sydney
Registered:
May 2002
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Re: Running premium with 1s-ci
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Fri, 29 July 2005 01:18
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Yes, the 1S-Ci is a 1.8... I guess I might have the later edition.
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Location:
Montrose, VIC
Registered:
May 2002
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Re: Running premium with 1s-ci
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Fri, 29 July 2005 09:40
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From memory, there's a book for the earlier (<1989) models that has the 1SCi and 3SFE, there's one for later models 3SFC, and one for the V6s (2VZFE). I think. Been too long since I was forced to look at a Camry 
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Location:
Sydney
Registered:
July 2005
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Re: Running premium with 1s-ci
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Fri, 29 July 2005 11:16
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The one from the library was for both the sv20 and sv21 camrys, although seemed to cover the 3s-fe in more detail
Probably won't get around to looking at it again for a couple of weeks since i have my trial hsc.
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Location:
Sydney
Registered:
July 2005
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Re: Running premium with 1s-ci
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Sat, 30 July 2005 09:39
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On the topic of getting a little more power, would replacing the stock filter with a k&n one be worthwhile? Assuming there's a k&n element that fits my airbox, how much will it cost?
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Running premium with 1s-ci
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Sat, 30 July 2005 11:07
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It will cost more than the gains you'll see.
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GOnna go inspect it closely in daylight tomorow.