everyone talks about changing the timing to 20,30 degress etc. but no one has really explained wat it is im a noobie and i am currently lookin to add a few moods, first wat is the timing thing how much it cost and where do u get it done any help would be nice, cheers

search and you shall find!

Get a timing light (or borrow one) Connect it all, then loosen the bolt near the top of the dizzy aim the timing light near the top of the crank at the front of the engine, and with the engine running the light should flash and you will see marks, look at the Gregory's manual for what each mark represents, then just turn the dizzy one way or the other and it will be changing the timing. 20deg and BP Ultimate should be fine. I personally only use 18 (15 is factory)

Search mate Some original photos have not been recovered yet.

yeah but how do u know its exactly 18 degrees, its not written on it Some original photos have not been recovered yet.

the yellow mark is tdc, the first mark is 5deg....they increase 5 deg every notch I think....its in gregories......

make sure u use good fuel

http://www.calaisturbo.com.au/showth...advance+timing (http://www.calaisturbo.com.au/showthread.php?t=39226&highlight=advance+timing) that took 2 seconds to find.

lol, yeh, it has been explained a few times good q dasblitz, kind of a smart arse question though, but you've got a point, it would be a rough estimate of what it exactly is, you must also consider what angle you're looking at it at, cause it looks different from the side, kinda like the speedo.

Mines been on 25deg for years. No probs as yet. Where abouts on the coast are you VLW4NK3R ?

runaway bay where bouts are u

I live in Nerang, I just started my own car cleaning franchise. If you need a detail I'll fix it for ya!

no sh_it i am gettin it done like right now AAARRRHHH!!!!

are u commin on the holden crusie on sunday 8th of may

Quite possibly. Dunno yet. I might drum up some jobs!

Quote: Originally Posted by VLW4NK3R everyone talks about changing the timing to 20,30 degress etc. cheers Note that once you advance the timing, you MUST run high-octane fuel (Ultimate, Optimax etc). If you go back to normal unleaded with the ignition still advanced, you'll get pinging/detonation which in the best case leads to loss of power and in the worst case blows holes in pistons. You have been warned!!! That said, before you advance the timing you could put a mark where the timing currently is, and if you say go bush and can't find PULP you just loosen the 12mm lock bolt and twist the dizzy back to the original mark. BTW, altitude also comes into this. I live in Canberra, which is 600m above sea level. Believe it or not, there's enough difference in air density from sea level to make a difference in engine tuning. Basically the less dense air will mean a less dense charge in the engine, which burns slower and so the optimum ignition advance is higher. Mine (when it was running...) was set to c. 22 degrees; it's quite possible that at sea level it would ping and I'd have to set it back to c. 20. Finally, because they have a very open (and semi-hemi) combustion chamber, the RB30 engine needs a lot of advance. I bought some indexing washers and found that with the plugs indexed so that the electrode gap points towards the intake valve the optimum advance was slightly reduced (I had it c. 23-25).

Good post there..

? what about the computer i have not seen any mention of people putting the computer into diagnostic mode when doing the timing,from what i have heard the computer will re adjust your timing and put it out if not in diagnostic mode when you do the timingis this true????

Computer does not control the timing at all... Advancing the timing will product the 'sprak' earlier in the stroke allowing it to ignite quicker, creating a bigger 'bang'. In turbo cars, will slightly increase spool time, but with both N/A and turbo it will run out of revs slightly quicker. However, retarding the timing will do the opposite, allowing slower spool time but allowing longer revs. That's what I understand... not 100% sure if its right or not.

hey guys, not sure if this has been covered but wat is the furthest advance timing you would do to an NA engine if ur usuing just normal unleaded fuel? i know it wouldnt be much, maybe 1-2-3 degrees? cheers Carl