Never heard pinging so I tried something, check it out.

[95Vert]

I have never heard my car ping. I have no idea what it sounds like, sooo what I did was bump up the timing to 24* so I could hear it ping. I put the spout back on and took it for a spin. I did not notice/hear/feel anything. Why? I mean, 24* is a lot. A buddy just told me to leave it there. I told him to forget it, but I left it at 18*. The car idles/runs fine and no overheating. Is this normal?

 

[blksn955.o]

with 14* extra in timing I dont see how your not pinging...try getting on the hwy and from cruising at 50-55 step on it maybe you have not been high enough in rpm and load to hear it.

Unless your running 110 on an alum. head with a REALLY cold plug with water inj. and not really getting on it your det.

Maybe your not really sure what it is/sounds like to know you are. Not being an arse just that with 24* base that is damn near unheard of.

 

[95Vert]

I know^ That's what's so weird. I made sure it had load, was doing 40mph in 5th, then floored it and nothing.

 

[droptopford 5 0]

ya... the car shouldnt run right at over twice the stock base timing... thats closer to a final timing advance number... i would say that its possible you have spun the rubber on the balance which would make you closer to stock timing advance than you think... but then it would have run like crap before the change...huh

 

[95Vert]

^ yes sir. I am currently running 18* and while I was adjusting it, it slipped down to -10* and it was very noticeable.

 

[GTA_V6_Mustang]

What is the proper way to check the timing (didnt mean to jack the thread) But I had a friend check the timing and he said it was supposedly set at 17* but I run 87 octane and I told him I dont believe that. That has to be impossible because with 87 on a bone stock motor I would have to hear a lot of pinging.

 

[droptopford 5 0]

from the best of my knowledge, and this is what i do every time... i remove the spout connector located near the air filter on a wiring harness. then hook up the light to the number one plug wire, i usually make multiple colored chalk lines on the degree i will be setting it to and the ones on either side of it...(it helps with low visibility (high sunlight) situations)... then i loosen the distrubuter via the one bolt holding it down, fire it up, turn the dist. untill the right line flashes flush with the pointer, and then reverse the process ending with replacing the spout connector.

 

[GTA_V6_Mustang]

I know this may sound stupid, but is there any way you can post a pic with the spout connector you are talking about? Also when you are looking at the line for the * you are setting it at does it have to be threw the little circle? or it just has to show up anywhere consistently on the timing light?

 

[vp6799]

I know this may sound stupid, but is there any way you can post a pic with the spout connector you are talking about? Also when you are looking at the line for the * you are setting it at does it have to be threw the little circle? or it just has to show up anywhere consistently on the timing light?

Take a look on the pass side inbetween the airbox and the fender. Attached to the fender, you should see a wire harness that has a connector with what looks like a cap or jumper in it. That will be the spout connector.

 

[95Vert]

Ok well this thread went to hell.

 

[Bosko5.0]

ive had my timing up to 28* but then it started to miss so i brought it back down some. that was before i replaced my balancer. I think that the computer takes timing out even though you set it so high, also the computer runs timing up to 34* for some reason?? ive seen it when i datalog with my tweecer.

 

[HISSIN50]

Nacho, let's get you back on track.

For the timing guys, this article should get most questions answered.

Bosko, the puter doesn't know what the base timing is set at, nor do we have piezo's to pull timing during the onset of knock.
FWIW, I've seen total timing over 40* at near stock global spark settings. If you can limit your TT to 34-36*, that can really be pretty optimal for many set-ups. If it's not a TwEECer induced thing you do to accomplish this, share with me how you did that please.

Nacho, if you have the A9L, being up that high isnt as gutwrenching as it would be with the T4 processor. If you happen to run premium fuel and your ambient temps are not too hot, it's not that far-fetched. Remember, the fox processor doesn't have the hideous timing and fuel maps that the T4 does.

If you have any sort of exhaust system, it might be real hard to hear knock over ambient noise.

Random ramblings.

Good luck.

 

[final5-0]

Ha Ha

Been waiting for someone to bring up the fact we ani't talking
about original pcm here.

Ole JT ... he don't let much slip by him

I really haven't spent much time with the Fox pcm's
but
They have to have similar amounts of total advance like us

Just for grins ... lets say it is 23
You add in your 8 at the dizzy for a total of 31

For a sbf ... 31 total advance is not out of line at all
actually
Its pretty dad gum conservative

The Fox pcm has different fuel settings which I got no clue
but
Its a good safe bet ... they are fatter than t4m0

Now ... You got an act that is reporting temps much cooler
than the Fox pcm is expecting
AND
Don't even anyone ask me what that might do

Hey if it don't ping ....... thats a good thing

Grady

 

[95Vert]

Yeah, I guess it is a good thing but I don't see/feel it improve performance. I had a lil missing in my exhaust. My car wouldn't buck or anything, but I could hear faint pops while cruising. I wasn't comfortable with that so I lowered it to 14-15* base. I haven't driven it in a couple of days, but when I lowered it and revved it, I didn't hear the gurgling anymore. Hopefully that fixed it.

So how many degrees does the pcm at to the total timing. I have it at 15* and when I put the spout back on, it read 23*. That's right around 8* like Grady mentioned, but I have heard from other people that the computer adds anywhere between 14-17* at Total Timing. How true is this? I had someone keep it steady at 3k rpm while I checked for TT but the damn thing is to fast for my slow eyes. lol

 

[blksn955.o]

Really you will need to put some load on it. As just sitting there not moving is not going to get a true picture as if you were putting a load on the driveline. If you can find a timing light/setup that has a readout (I have seen some old old ones that look like old radios with a dial on them) and put it in the cabin to watch as you go down the road...the tweecer will not work as it assumes (along with the eec) that base is 10*.

IIRC the stock total timing is like 26-28* but in the high load area. If you did in fact run 24 base thats 14* more so 40-42* total. The bad thing is the mid load egr timing that is already at around 44* so those areas would be at 55* as the other tables (as 55* is the max allowable in the eec) would preatty much stop advance. You prob. would have had a little bit better chance to get it to ping/det. in those conditions.

 

[final5-0]

I'll go ahead and take the chance I'll look kinda stupid
but
Hey ... We are talkin about Fox stuff here
so
Since their pcm's have no bearing on my personal ride

I have not in the past ... and I ain't gonna any time soon
waste what little brain power I got on any of that stuff

however

Don't their tables work differently than ours

Where ours is wysiwyg

Their's show values that need 10 added to em

What ever is the correct way to interpret their table ......

You also have to be concerned about other sensors doing
a + or - kinda thing but the difference is not gonna be a
whole lot I'd bet.

You can analyze all this stuff to death
but
For more years than most of you fellers are old

SBF's have been producing maximum power@36 + or - a bit

Grady

 

[blksn955.o]

forgot he has the fox swap , I cannot read his sig and just kinda skimmed the posts .

still even with a fox eec adding that much one would think would cause a ping. I mean if it has a spout that has to be taken out to set base timing...you would think the fox stuff would still assume the timing was at a factory setting? However, if the fox pcm is that forgiving...damn.

 

[HISSIN50]

Here's a Fox timing table for those interested.

 

[final5-0]

Here's a Fox timing table for those interested.

By looking at the table ... thanks JT it would seem the values
you are looking at are the true values.

Grady

 

[95Vert]

Thanks for that link but I have NO idea how to read it. lol

So there was no concensus on how many degrees are added for TT right? I had also heard about the TT working best between 34-36*.