Ok so Saturday night my timing belt decided that it was done. Pic At the Bottom on this post, and I'm not going to try to lie and say I was just riding around when it happened cause I wasn't I was ragging it pretty hard. O and its a 91 N/A Supra.



But anyway heres my question. Ok I changed my timing belt out and marked the cam gears and crank before I removed it. After I put the new belt on and re alined everything to the marks I made. The car cranked up and seemed to be running fine so I figured (stupid me for not checking) it was in time. I drove it around the block and it seemed fine, wasn't hesitating or sputtering.

It was however idling higher then it did before hand and running a lil rich. I figured this was due to the battery being disconnected for 12+ hours and thought that the ECU just had to learn its self (happened before). Didn't give it a second thought came home and parked it over night.

Well Monday I get into the car start it up and as soon as it cranked and began to idle I could tell right away that the timing wasn't right. But I had to be to work in 30 mins had no other ride and no time to check it I said screw it and went to work anyway. All the way to and from work I could tell that it wasn't right, that it had felt like it was firing before it should and was way to far advanced.

So once I get home I put a timing light on the car and from that I was running about 30 degrees advanced. So I immediately took it all back apart and redid the timing and set it to about 15 degrees advanced (what the manual says to set it at if I remember right). Well i started the car and it seemed to be running alot better and how it should. So I got the timing light again to check it again, well it was sitting at about 20 degrees advanced.

Ok no problem I say I'll just retard the distributor some to take it down. Well I start to retard the dizzy and get it to about 18 degrees, was low as I could go before it starting to idle bad and cut out. Well leaving it there I take the car around the block and its running great not idling high not running rich anymore and seems to have more power then it did before the belt took a sh*t.

Now that I've said all that my question is do you think running at aprox. 18 degrees advanced is hurting anything? Should I just leave it there or try to re time it and get it closer to 10-15 degrees like the manual says (if I remember correctly as I don't have one anymore)?

I absolutely hate timing and its one the few things that I'm not very good at when it comes to a car. So I want to get some feed back from ppl that have alot more knowledge on timing and supras in general for that matter.

Thanks for any responses.

 

i found an article that states you should not advance past 14 degrees (up to 14 if you use 93 octane). i will find the article when i got home from work