Fao Fordy

[superls]

Fordy, i remember reading somewhere that you had advanced your ignition timing?

is this true, if so buy how much, and what gains if any have you noticed?

how did you do it simply by rotating the dizzy?

its just that i did mine this morning now its set to 10deg BTDC with no vacuum connected and it seem to be going and pulling a lot better.

i just wanted to know if there would be any adverse effect on the engine, mpg etc?

cheers superls

 

[Fordy]

yes i have advanced it

i advanced mine by 5 degrees btdc with the boost sensor disconnected mainly because im still running the ecc stuff as i found anymore advance and i got a bog down when booting it away from a stand still and plus i dont want it to pink

also

i marked the standard timing with a mark on the dissy so if i was out and about and it pinked slightly i could undo the 12mm nut with a cheap 12mm spanner i keep in my car and put it to standard but so far its not pinked at all so no need,

once i get the weber on i'll advance it more since i got the wideband on it now aswell i can read the engine better

mpg should increase slightly but engine wear will increase alot so make sure you keep the engine serviced regularly without fail and check the plugs as much as you can,

also come summer you might have to take the advance down a bit as the weather will be warmer so you will have a higher risk of pinking

 

[superls]

sorry i might be saonding daft but whats pinking?

 

[Fordy]

pre-detonation in simple terms its engine killing if left

 

[superls]

well i dont think ive heard any as yet? what does it sound like or how do i know its hapening?

 

[Noddie]

sorry i might be saonding daft but whats pinking?

as far as i know its when the petrol ignites when the piston is still moving up (therefor the explosion is trying to push the piston down but the pistons momentom is pushing it up, bad stuff

sorry if im wrong

 

[bobsp16]

well i dont think ive heard any as yet? what does it sound like or how do i know its hapening?

it sound like a rattle when you excellerate in a high gear from low rev's

 

[Ed]

Engine wear wouldnt increase dramatically with advanced timing. In an ideal world ignition would always be set for MBT anyway (minimum best timing, i.e. on the safe side of det), but other wise advanced as far as possible. AFR gauge also wont help with pinking/knocking etc, unless its running lean causing high combustion temps.

Due to the low compression of a K10 and low power it produces per litre of engine, your unlikely to find MBT by trial and error. The only way then to do it reliably is on a rolling road, where you ajust the timing to get best overall power. The reason why you felt it bog down was because you went past MBT

 

[Fordy]

i only went to 8 degrees ed and it ran like crap so put it to 5 and it was fine maybe the ecc ignition was messing it up ?

 

[Ed]

8 deg is quite allot of extra advance. Throw it on a dyno (not litereally haha) and see what works best for you. You will find as you increase the power of the engine the amount of advance timing you can use becomes less.

ECC is a good thing to have however. I wouldn't ever consider removing it.

 

[superls]

as i said before ive got mine at 10 deg, and its running fine fired up alright this morning so ill leave it where it is for the time being i think

 

[ollyc98]

I advanced mine 5 degrees and it has plenty more acceleration. It's the first thing I do when I get a car lol. It supposedly lowers fuel economy though, so I've been told but on a car this good on fuel I don't think it matters.