Turns on the pump
#1
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#6
That might be ok for you, but as far as general advice.... no dice. My pump is maxed as well and I can peg my pyro in the blink of an eye if I want to. Anytime I get on it, every hill I go up, my left eye is on my gauges. Aluminum melts at 1220*. I couldn't imagine driving with out gauges, with the things I've done to my truck. IMO, Better Safe Than Sorry.
#7
After a while you realize that pyros fake and lie like women.
Our injection systems leave a lot to be desired; the fuel they inject doesn't have time to burn in the combustion chamber, and a lot of it burns in the exhaust manifold; that results in high EGT's but the pistons themselves don't get that hot.
You can reduce EGT's 100-200 degrees by advancing your timing, but that makes your pistons more likely to melt. A ton of fuel turning into black smoke can cause higher EGT's but actually cool down the cylinder and make pistons less likely to melt.
Our trucks with stock timing can withstand some crazy EGT's for short distances, even with timing advanced quite some ways you'd be well over 1250 degrees before you get unlucky enough to melt pistons within 15 seconds. A lot of drag and sled setups I've seen peg the pyro after a couple seconds and keep it on the stop until a few seconds after they're done; molten pistons aren't surprising but they're far from common. Meanwhile, common rails are so efficient at burning the fuel they inject, that they can melt pistons at 1300-1400 degree EGT's.
So just because the pyro is telling you that it's not that time of the month doesn't mean you're not going to be paying child support, and just because it's saying that you're doing great doesn't mean it's actually having fun.
Pyros are helpful when towing or going up a hill; you definitely don't want to sustain temperatures above 1200-1300 degrees. But for short bursts these engines are pretty forgiving.
Our injection systems leave a lot to be desired; the fuel they inject doesn't have time to burn in the combustion chamber, and a lot of it burns in the exhaust manifold; that results in high EGT's but the pistons themselves don't get that hot.
You can reduce EGT's 100-200 degrees by advancing your timing, but that makes your pistons more likely to melt. A ton of fuel turning into black smoke can cause higher EGT's but actually cool down the cylinder and make pistons less likely to melt.
Our trucks with stock timing can withstand some crazy EGT's for short distances, even with timing advanced quite some ways you'd be well over 1250 degrees before you get unlucky enough to melt pistons within 15 seconds. A lot of drag and sled setups I've seen peg the pyro after a couple seconds and keep it on the stop until a few seconds after they're done; molten pistons aren't surprising but they're far from common. Meanwhile, common rails are so efficient at burning the fuel they inject, that they can melt pistons at 1300-1400 degree EGT's.
So just because the pyro is telling you that it's not that time of the month doesn't mean you're not going to be paying child support, and just because it's saying that you're doing great doesn't mean it's actually having fun.
Pyros are helpful when towing or going up a hill; you definitely don't want to sustain temperatures above 1200-1300 degrees. But for short bursts these engines are pretty forgiving.
#8
mine's cranked about 2 turns.. whatever "to the collar" is anyways. with a fuel pin 366 spring and stock timing and highest i hit was 1150 and thats just with the bed loaded with some winter weight. get some gauges.. it's worth it
#9
just me but.... i am 1 1/2 turns from runaway, 80hp injectors.... read my sig. i can burry my 1600* pyro in the blink of an eye, i hav in fact many times. my truck hasn't blown up yet, because i have guages. it just lets you know when you have to back out of it. and a good pyro is worth the $150 ish. for all you know you could be running your truck at 1500* and never know it. just a cheap insurance pollicy. but thats just me, oh and most other guys.......
#10