what you got your Timing set to?

[Koojo]

stock is 15

[G-Forces]

Originally posted by Koojo
Seems like 19 can cause some damage, and I dont want to take do something that Im not sure about.

I don't know where you get this impression but if you run premium gas you won't have a problem. If you can't, or don't want to, afford premium gas then don't set your timing to 19 BTCD; keep it at the stock setting.

[geoff200]

I don't have a problem about running good grade fuel, in fact I am forced to put 95 or higher in. I guess I could set the timing to 19 degrees without worries then. What would this do to the torque curve? would I loose some low down power in exchange for more power at higher rpm or visa versa, or more power all round? How do you set the timing - do you turn the distributor like on cruder cars? or is this an ECU remapping thing?

[G-Forces]

The only thing advanced timing costs you is the extra money for the premium gas.

As to the procedure go to www.se-r.net and look for it on there. You have to do some raindance ritual that involves revving the engine 3 times to 4000rpm then holding the revs are ~2000rpm for 1 minute or so, disconnecting the tps, blah, blah...check out se-r.net for the actual details. Oh BTW you need a dialback timing light too.

[JustinP10]

Originally posted by geoff200
What would this do to the torque curve? would I loose some low down power in exchange for more power at higher rpm or visa versa, or more power all round?

I think every motor is going to act a little different when the timing is advanced, but I don't think you will lose power anywhere, unless you were to possibly overadvance the timing, then you may lose power???

With 19* timing my dyno didn't lose power anywhere, the dyno was almost identical to the prior run except from about 4500rpms on up to about 7000 rpms. It looked like someone just pulled the line up for that 2500rpm range and left the rest of the graph the same. However, your motor may react different, so I'm not totally sure how it'll react.

[P11GT]

ive checked out se-r.net but cant seem to find any info on the proceedure for setting the timing 17 or 19 degrees BTDC, can anyone post a link to the specific page? Thanks

[b-b00gie]

http://www.se-r.net/engine/about_timing.html

[Dshaft96]

I've got my timing advanced to 19*. I run 92 octane gas no problems. Throttle response is an enormous improvement. When I first checked my timing it was at 13*. It's really easy; just get a dialback timing light and follow the se-r.net procedure. Oh and all the Sunocos around here (Toledo, OH) sell 94 octane for about $.10 more than 92.

[b-b00gie]

Originally posted by Dshaft96
When I first checked my timing it was at 13*.

Yep, I think the Nissan slave workers / robots set the timing trivially to somewhere around 13 to 15. Seems there is no consistancy lol...

[geoff200]

Do you think 19 is better than 17. The Se-r.net link says 17. Also have any of you tried it on a European Primera which I have been told has slightly higher compression than US G20's.

[b-b00gie]

not sure about the compression issue.


Many people have done 19* safely. I have mine at 17*


One thing Geoff, I've heard that US octane levels are not measure the same way as other countries.

Your octane may be + or - what ours is...


For example.. if someone in the US says they run 19* advanced with 92 octane, in the UK you may need 95 octane, or maybe only 89 etc...


Not sure which way it varies, but I have heard this several times.

[Anthony]

Nissan specify that the timing on a Euro spec SR20DE should be 15 +/- 2 degrees. You should be able to set the timing to 17 degrees using standard 95RON petrol, but I'd be wary of going higher than that unless you use 98RON petrol. Even with 98RON, I wouldn't go above 19 degrees if you value your engine, as the higher compression of Euro spec SR20 motors (10:1 vs 9.5:1) means you won't be able to safely increase the timing as much.

Remember - if you set the timing too high the engine will begin to "pink" under load. The SR20 series engine's have a built in knock sensor, so the ECU will "hear" this pinking and pull the timing right back. Therefore you are likely to get WORSE performance than if you'd left the timing at 17 degrees.

[geoff200]

Thanks for the advice - it's 17 degrees for me then.

If anyone has experience of a JWT chip on a european G20 please post, because I know some of you are fitting these instead of advancing your ignition. The JWT chip must advance extra through its mapping.

[G-Forces]

Please everyone, I might be splitting hairs here but JWT sells ECUs. You cannot get a chip for any G20. Unless you have a modified ECU that takes chips.

[P10DET]

Originally posted by DVSNCYNIKL

Actually, you guys do have better gas than we do.

No. We do use a different scale from the rest of the world. Their octane rating is Research Octane Number. Ours is an average of RON and MON (Motor Octane Number).