my distributor got moved a bit, and it seems to be off. whats proper for a b18c1?

 

14 to 18 btdc is within stock specs.

 

many on this board advance the timing to +18 btdc....usually will give a little more power -- just make sure you run 92 octane gas all the time, tho

 

Mine is set at 17btdc,its been like that for about a year now,it was at 14.5.I noticed better throttle respoonse and better low and mid range power.

 

mine's at 17. You can go 16 +/-2

 

usually if you advance the timing u will gain more top end but lose more on the bottom end...just play with it.. if u are spraying you will want to retard your timing.. for example...stock is 16 tdc..


[Modified by allmotorls95, 9:58 PM 10/15/2002]

 

Will you get worse gas mileage if you advance your timing?

 

Here, read this:

http://www.g2ic.com/forums/showthrea...nding+ignition

Regards,

Oz

 

OTHERWAY AROUND!!! If you advance it your gainning low end if you retard it you gainning top end.... THIS IS CORRECT...

 

TGUNNER is right.

 

How so?

Oz

 

i checked mine and it was at20 to 22 btdc and has ran fine for years. changed it to 18 and am severely dissapointed. lost power all the way. this might be a result of oil in my cylinder from bad valve seals but the fact is at 20 + it was just plain faster.

 

i adv my timing on my gsr hybrid and i lost about 3mph in the qtr

 

Then why are you saying that TGunner is right?

Regards,

Oz

 

didnt say if he was right or wrong. but maybe you can asnswer this question if timing is advanced it should have the same effect across the powerband. more push against the pistion earlier. for it to be detrimental to top end it would have to fire to early and cause detonation. but for it to hurt low end it would detonate faster because of the early or preignition which would be greater at low rpm due to burn time. so i would say that it helps high rpm by giving it more time to burn where it needs more time and it should help low end by the added leverage it provides by pushing on the rod longer. the only way it should help low end is if the tip in detonation isnt great enough to push in reverse and raises the overall cylinder pressure at 14 degrees atdc . or helps to increase the velocity of the gas mixture.

 

My apologies. I got distracted by your avatars

Anyway, do you mind restating what you said here. I don't know if it's because it's been a long week or something, but I'm having a hard time understanding your point. Although, in any case, the primary factor in inducing preignition would be the fuel's resistance to self-ignite (I'm not saying it's the only factor, just the primary one).

Regards,

Oz

 

the primary issue would be your total set up. fuel is the afterthought. you use what you have to. but if you fire a spark off to early you will also have preignition which will cause detonation. any much before 14 degrees atdc when the mixture completely ignites will be problematic anyways. as the force will go to the bearings which will cause heat and pressure to spike but if you fire one off on the way up than this could seriously damage your engine. thats all i was trying to say.