bigwheels94

For any who have ever melted down their engine. What were you doing? For how long? What programing were you running? Trying to get a consensus of what NOT to do.

2007 5.9

Head over to Comp D...there are lots of trucks that have melted down over there.

The common theme is Smarty, F1 injectors, MP-8, and twins.

RyeThomas

Melt down is generally from someone not fully understanding what their mods are doing. I hate to say it alot of time it is operator error. I have talked to many guys who stack their trucks with programmers and downloaders and really have no clue how they work together, and bam when they roast a piston they want to blame a manufacturer. Case in point my 750hp truck had a Smarty/TST stack. I sold it and the performance shop that bought it blew my head gaskett within their first joyride . I told them what they could and couldnt do but people dont want to listen.
Again I hate to say it but people like to run things on Kill when there truck is not built for kill then they want to blame someone.

My last truck had F-1 injectors, Smarty, Twins and I would have put it against any truck for durability. But if you dont know what you are doing you could roast the same truck in 2 seconds. Just My Opinion.

mulisha

couldnt be any more wrong..out of the 4 that you mentioned, ill agree with the F1 injectors in a 04.5 and up...and ocassionaly the mp-8, because people dont know how to use it..the smarty is one of the safest DL's out.and how does the extra cooling from twins blow a motor.

ratsun

Only one I've melted down happened because a freeze plug fell out

mulisha

did it fail without you knowing it.usually it blows and you pull over and turn it off. what happened..

maddog madden

This is like saying guns kill people

bigwheels94

I'm actually asking about moderately modded trucks, not twin turbo'd sled pullers. Also towing rigs. What happened? Too much timing? Lugging the engine, etc.

RAMRODD

I can't see the smarty as one of the safest DL's out there. Will it automatically back off the fuel if the egt's get to hot? No it wont, up to the operator to watch the egt's. Is the smarty a great product? I say yes it is but you need a operator smart enough to watch the gages.

A few of the burned up motors that I have heard of had a injector go bad. And the operator ran the truck with a miss and burned up a piston. Increasing the pressure on a stock injector to much can dramatically increase this risk

soulezoo

You know folks, he didn't say here that these things were "the cause" only a common theme...

It is a common theme because they are proven combos and many try it.

As said above, it still comes down to knowing what you are doing. Most of us don't have a clue what the fueling maps, timing, cylinder temps, cylinder pressures and etc are... we plug electrics and stix in them and push the truck hard then when bad things happen-- blame someone!

ratsun

Rear one above the bell housing fell out one morning on my way to work. It was cold and slushy but it wouldn't warm up, gauge only went up about 1/2 where it normally sits. I knew there was a problem as the heater fan was only blowing cold air at a point that I'm usually up to temp so I pulled over and tried to look, side of the freeway pouring rain and pitch black but no steam or anything overflow bottle full however I can smell antifreeze but no obvious signs of it? So I keep going (another 10 min) closely watching my temp gauge, its seems to be moving but not up to where it should be and still no heat. Get to work and do my shift, after work I come out and start looking, overflow bottle full hummmmm? Check the rad empty!
I guess it fell out when the engine was cold so no pressure or steam for me to notice with all the rain and slush? Had Murphy riding in the truck that day.

Scotty

My 04 went bye bye completely stock with gauges. But that was not a melt down it was the other common thing...dropped an exhaust valve. Dissimilar metals was what I learned with the valve guides.

Friend of mine has lost 3 engines over 700K. All melted pistons in various holes.
Each and every time I told him to get gauges he did not.

First two melt downs [06] bone stock. Third he had the smarty on SW3. That is not saying its was the smarty. It was him not having gauges pulling a camper with heavy crosswinds. Bad fuel and injectors is what appears to have created his damage. He just put a 40K mile 07 engine in the truck. He bought this from someone that 'knows' their stuff. Had one injector replaced before they could even get it to stay running. Two more got swapped yesterday and now he has decided to replace the remaining three. I told him that if he chose to skip the gauges...do not call me when he is broke down again.

mulisha

well since the smarty is known for running cooler then most, id say it is the best...

CamperAndy

Twins can make lots more boost then the engine can handle if it is cooler or not is not the issue.

no_6_oh_no

Ain't nothing safe about a 260 hp fueling program, I don't care how you spin it.

Too much timing is too hot, Smarty is no more or less susceptible to that than the next power mod.

I know one person that doesn't think a Smarty is that safe, a single 1/4 mile pass and thats was all she wrote.