Timing Light - How to get correct readings???????

[Black33]

Hey all,

I've searched the forums a bit and found that people are saying that it's hard to get an acccurate reading using a timing light on an r33 gtst!

I checked my base timing by using my timing light I have and found that it was showing 6 white marks past the orange one.

Does this really mean that my car's timing is advanced 30 degrees??? cos I've heard that timing is hard to check with a normal timing light on an r33 and that the readings that you get are double what it actually is???

That would mean my timing is 15 degrees which is correct. The car has been running for months and i've never had a problem on this timing setting so I have a feeling that it prob is actually 15 degrees. To be safe for the time being, my tuner retarded it, but that has robbed me of precious power and I think that the readings we are getting are wrong.

Can someone please help and shed some light on this!!!!

How can I get an accurate reading of my base timing???? I'm happy to take it somewhere and pay for them to check it if I have to!!

I need urgent help.

thanks

[Mincus]

Hi Black 33,

First Qion what/how are you hooking the timing light up to read the ign puse ? As there are a couple ways of doing it !

I'm would be happy to help you in this matter in return for your vin number so my mate can get a water pump for his ser 2 RB25 in a R31 as we might of found today that the blocks are diff between ser 1 and 2

mincus

[USRB25S13]

Well I am having a timing problem on my Series II motor. Mine always reads far advanced like 30 degree's. When I first got my car running I had the sensor almost fully advanced and it red 15 degreee's Car ran great! Then after a few days the car started to run slugish. I checked the timing and it was off the scale. I set it back to 15 degrees again. Now the sensor is in the middle of the range. When I set it to read 15 degrees the car runs very slow. With it set farther ahead it runs better. I turned my boost up to 10 psi (Everything stock except 3" turbo-back and HKS SSQ BOV) My car shoots flames between shifts. Is this nomral? I guess a S-AFC is needed?

[Zahos]

where abouts in melb are you?

Perhaps I can give you a hand, coz I've done it plenty of times....

[Steve]

two places to take timing from on series 1 (that I know of).

1. there is a loop on the back of the ignighter - this will give you double the actual timing, so if you see 30deg on the engine, its acutally 15 deg.

2. remove the cover off the coil packs, and take the signals from number 1 - this will give you the actual timing. A bit more accurate than method 1.

not sure if it is the same for series 2, but you can guarantee if you take the signal from no 1 coil pack it will be accurate.

[USRB25S13]

I think that my series II works the same way with reading double. I am going to go check it out right now.

[Black33]

I tool readings from the loop and also from coil pack 1 and both were the same - 30 degrees advanced

[crooser]

try flipping the direction of the light pickup - works for me

[Black33]

yeah, I did this and still no good - might have to try using a lead to extend the module away from the plug and clip over this (ie get a reading after the module not b4 it)