Today, I decided to try and check the timing because I am certain it hasn't been checked ever in its 12 year run, until now! Here is a write-up on how to do it. This will make the idleing smoother, engine run smoother, as well as perhaps increase gas mileage for having the optimum timing.

When I checked mine, to my surprise it was at 5 degrees BTDC! No wonder my idle was fluctuating, despite cleaning out the IACV valve, and having new plugs. Not to mention when flooring it, it didn't feel THAT smooth ( I wanted it to feel smoother) and I guess you can say it didn't quite rev easy.

Maximum allowable is 15 degrees BTDC, but you must use 91 or higher octane gas!!!! If you hear pinging or detonation, RETARD THE TIMING to prevent engine damage. According to Nissan Performance Mag in the "Ask Sarah" column of the November 2002 issue, maximum allowable under 87 gas to get slightly more horsepower is 12 degrees.

Be sure to reconnect the TPS and the fan connector once you are finished!

Did I notice a difference? YES! Idle stablized even more, and it runs a lot smoother. I notice myself shifting over 15 mph 1st gear, 25 mph second gear, without thinking as if I do it automatically. Before I would shift at those just because.

Engine doesn't sound strained either. Revs freely as well. I personally believe I have gained some low-end torque. I accelerated faster on a hill on the freeway which I would normally step on the gas and not see a noticeable speed increase. But now I do. Hopefully I can notice some better gas mileage as well (or worse, haha, and not that I didn't have great gas mileage before)

Last edited by oliverr87 : Mar 11th, 2006 at 08:03 AM.

 

Mar 11th, 2006, 09:38 AM   #2 (permalink)

79kz400 Nissan Enthusiast Joined: Aug 2004Location: Mid-OhioPosts: 235

Congrats on an *excelent* post. One of the best descriptives i've seen yet.I was planning to check mine to over break and this took all the guess work out of it.

Thanks again man!

 

9kz400

 )

oliverr87 Nissan Fanatic Joined: Sep 2005Location: West Covina, CAPosts: 339

Thanks for the concern JRinke, but my car runs great. I didn't want to show these pictures because I didn't want to reveal what I've done to the car so far!!! =D But while we are at it...here is a preview so far! Before and after pics:

Before:

After:

Last edited by oliverr87 : Mar 11th, 2006 at 06:06 PM.

 

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Mar 12th, 2006, 10:04 AM   #6 (permalink)

p10_ga16de Nissan Enthusiast Joined: Feb 2006Location: Nottingham, UK Posts: 27

Great write up, but its also a good idea to check the idle while adjusting the timing as it can be thrown out by the change, I also find it strange that you guys with US GA16DE engines advance by moving the distributor forwards, I do it by moving it backwards?__________________It is better to try and fail........than to never have tried at all!

 

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Mar 12th, 2006, 10:38 AM   #7 (permalink)

sybergato Nissan Enthusiast Joined: Aug 2005Location: Va, East of RichmondPosts: 106

Great post, now if only I could get one of ya'll ta let me borrow a gun. . . .lol.

 

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Mar 12th, 2006, 11:09 AM

  #8 (permalink)

oliverr87 Nissan Fanatic Joined: Sep 2005Location: West Covina, CAPosts: 339

Thanks guys! Also remember, you cannot set the timing properly IF base idle is messed up! For those people, here is another write-up I did on how to adjust idle. Base idle for manual transmission GA16DE is 650 RPM, 750 RPM for automatic. Make sure idle is correct BEFORE adjusting timing!

1. Warm up and shut off2. Disconnect fan and TPS3. Restart and rev 3 times to 3000 rpms4. Adjust via idle screw, clockwise idle decreases, counterclockwise idle increases5. Once idle is set, turn off and reconnect TPS and fan

Last edited by oliverr87 : Mar 12th, 2006 at 11:59 AM.

 

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Mar 12th, 2006, 11:59 AM   #9 (permalink)

JRinke Nissan Enthusiast 

 

Also might want to point out the IACV valve for those of you who are having irratic idle and revving problems. Nostrodamus has an excellent write up on how to clean it up, just pointing out though that its in a different position on this engine than his.__________________

Joined: Jan 2006Location: SCPosts: 185

1992 2-Door B13 GA16DE 1.6L 5-speed XE

 

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Mar 12th, 2006, 12:02 PM   #10 (permalink)

oliverr87 Nissan Fanatic Joined: Sep 2005Location: West Covina, CAPosts: 339

True, this is for B13...B14 is slightly different for adjusting idle!

 

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Mar 12th, 2006, 06:08 PM   #11 (permalink)

sybergato Nissan Enthusiast Joined: Aug 2005Location: Va, East of RichmondPosts: 106

GREAT! Post more fix tips for the B13! My engine is 200k over so I'm sure it needs these minor "tunes". Thanks for the tips! Keep em' comin!

 

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Mar 28th, 2006, 07:19 AM   #12 (permalink)

filcchar Nissan Enthusiast Joined: Jan 2006Location: Lisbon, PortugalPosts: 45

Thanks oliverr87, this is a good exemple of a picture = 1000 words... real help!

 

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May 6th, 2006, 09:50 AM   #13 (permalink)

Rix Sorta-Newbie Joined: Aug 2004Posts: 19

great pics there

 

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May 16th, 2006, 04:10 AM   #14 (permalink)

Burn 17 Nissan Fanatic 

what is the difference on the b14 for base idle ajustment?__________________NEW!!1987 300ZX200 sx auto cross beast--

Intake, Front and Rear Strut bars, Major exhaust

 Joined: Dec 2004Location: Elk Grove CallifroniaPosts: 467

leak.98style tail lights, clear corners, and halo angle eyes, Hot Shot headers/Downpipe(still need money for the rest of it)

Mazda B2200 Mini Truck

 

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Jun 15th, 2006, 07:26 AM   #15 (permalink)

silver93sentra Nissan Enthusiast 

 Joined: Nov 2005Location: White Bluff, TNPosts: 158

Did you have to change to higher octane fuel after adjusting timing?...OOPS. I didn't read the beginning of the topic, sorry! I feel like a douuche now...great sticky though.

Last edited by silver93sentra : Jun 15th, 2006 at 07:30 AM.

 

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