SOHC timing for better acceleration

[89S13 Drifter]

Can somone tell me what I should have for stock timing on a 89? And secondly what should I adjust the timing to, so that it accelerates faster but doesn't make the car run/idle to ruff. After all I want to improve the engine not kill it.

[ricebike]

ahh, it should be on the sticker under the hood... only advance it past spec when you know you'll be using premium gas...

there's no knock sensors to retard the timing when detonation starts kicking in our SOHC (y they leave it out???)

u can maybe check online repair manuals @ autozone.com? i'm lazy to do this 4 u.

[ricebike]

well, whoopie, i found a thread using the red search button...

15 BTDC is the base timing @ idle...

http://www.nissaninfiniticlub....ation

[89S13 Drifter]

yeah I found that but I also saw 20 so I wanted to be sure, a big difference between those 2 numbers.

Anyone with an idea of what to set it at for better performance, perhaps 18 BTDC?

[moses]

I think 2-3 degrees is the generally accepted advancement. Be sure to use high octane, like rice said.

[ricebike]

K, i looked under my hood & confirmed baseline timing is set to 15BTDC, maybe the 20 is for the DOHC???

I dunno about ^ idle speed as well (to about 900rpms?) or is this just a waste of gas...

[moses]

K, i looked under my hood & confirmed baseline timing is set to 15BTDC, maybe the 20 is for the DOHC???

I dunno about ^ idle speed as well (to about 900rpms?) or is this just a waste of gas...

Correct.

[ricebike]

on the 1st, 2nd, or both statements? me gotta learn

[rudeboy]

i advanced my timing on my sohc to about 20 btdc....seriously imporved HP/throttle response and acceleration....i also always use premium fuel...then i crashed that car

[89S13 Drifter]

i advanced my timing on my sohc to about 20 btdc....seriously imporved HP/throttle response and acceleration....i also always use premium fuel...then i crashed that car

So 20 isn't to high if I use 91 octane? and are you sure 20 is better than 18? Seems from 15 to 20 you would pass the point of efficency. But then agian I am not sure and that is why I asked the question.

Btw exactly how much did it improve you acceleration?

[rudeboy]

it just gave me the extra burn i was craving for.acceleration was nice.it pulled hard.better then my car now with intake and broke exhaust