5.0L timing issue
#16
I have done quite a bit of racing with my mustang, both with E7's and trick flow and have had them on the dyno. It doesn't matter to the 'combustion chamber' what your cam is timed at but does matter when you get spark. The TFs are much more effeicient and require less timing and with the factory EEC IV mine always made best power at 14* advance
#17
Not sure what you're saying here, but the crank keyway is at #1 TDC. When you align the crank key at 12 o'clock, the #1 piston is at TDC
#18
#19
#20
Ok, that puts it's location at 12 o'clock, so that the #1 piston is at TDC. Which is as it should be.
#21
So I took the car out for a really long ride, up some steep grades, accelerating as hard as the engine would go, and magically, heard no detonation. Could I have been overheating the engine for all the time that it was low on coolant, and that was what was causing the detonation I had been experiencing? More driving will tell.
In answer to your question, when it was detonating, it seemed to start at full load as the engine reached 4000 rpm. Since I knew that was bad for the engine, I usually let off at that point, so never found out whether it would continue to do it past 4000 rpm. And the highest grade gas that's readily available around here is 91 octane. I've heard that some stations may still carry 93, but I haven't seen them recently.
#22
I had to replace the water pump on my engine last week, and noticed that the front cover gasket has been leaking for a while. So I've been running on low coolant for I don't know how long, even though the temp gauge showed "normal" temps. Today was the first time that I got the system fully burped after replacing the pump and all the gaskets, and noticed the steady state temp reading was slightly lower than before the fix; it's now right on the first quarter indicator, vs between 1/4 and 1/2 before.
So I took the car out for a really long ride, up some steep grades, accelerating as hard as the engine would go, and magically, heard no detonation. Could I have been overheating the engine for all the time that it was low on coolant, and that was what was causing the detonation I had been experiencing? More driving will tell.
In answer to your question, when it was detonating, it seemed to start at full load as the engine reached 4000 rpm. Since I knew that was bad for the engine, I usually let off at that point, so never found out whether it would continue to do it past 4000 rpm. And the highest grade gas that's readily available around here is 91 octane. I've heard that some stations may still carry 93, but I haven't seen them recently.
So I took the car out for a really long ride, up some steep grades, accelerating as hard as the engine would go, and magically, heard no detonation. Could I have been overheating the engine for all the time that it was low on coolant, and that was what was causing the detonation I had been experiencing? More driving will tell.
In answer to your question, when it was detonating, it seemed to start at full load as the engine reached 4000 rpm. Since I knew that was bad for the engine, I usually let off at that point, so never found out whether it would continue to do it past 4000 rpm. And the highest grade gas that's readily available around here is 91 octane. I've heard that some stations may still carry 93, but I haven't seen them recently.
#24
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