Do built engine's last longer?

spooldup

spooldup

Super Member
Do built engines last longer than a stock motor if driven normally and maintained? I am in the middle of a build and was just thinking like would this motor last longer than a stocker since it's being built with better parts.
 
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Drac0nic

New member
dropping a good set of rods and pistons in it can't hurt it at all, there are certain sacrifices made with forged pistons (the biggest being the amount of expansion they have) but if you start getting detonation they tend to hold up better. If I remember correctly the denser metal in a forged piston may not even heat up as much as standard cast pistons, thereby reducing detonatio risk slightly. far as it goes a set of TRW pistons and Eagle rods or better components would be good money in my book, well as a few other more minor things like studs for the mains and heads as well as good ARP rod bolts. If you're wanting to go all out main caps are a good idea, but with what you're running probably not necessary. As far as it goes, detonation is the biggest enemy of these engines, so having a bottom end that'll hold up decently is critical. My thought is that if you've got the motor out and you're considering something do it "while you were at it" do it because it's easier now then when the engine's in the truck.
 
nightdiver

nightdiver

Active member
Well i got 550 miles till now and burned my tranny already :D
It depents on the Hp range imo . If you got good fuel in it mild advanse and not more than 16 psi of boost with a good A2A the engine will live a lot and save you money.
Then you want to punish her with high boost , big turbos, 5200 rpm,.....you know youre gonna break something (sooner or later)
 
442typhoondude

442typhoondude

Ty'less Bum
Detonation is usually caused by one certain area over heating on the piston. When you exchange out the factory casters for forged it will definatly have a much more even heat range on the piston. Although forged can still easily detonate. Seeing as a certain chip tends to burn a nice hole in factory pistons, a thermal coating would have nothing but positive benefits. Many people are skeptical as to whether coatings work or not, but we have had it proven with real time motor use and extensive bench testing. We took a forged out of the box and held a torch to one area on the piston. Of course the heat built up in the area where we held the torch and the rest of the piston remained in an average temperature. We took another out of boxer and had it thermally coated and did the same test. I don't have the test numbers at my house, but the heat distribution on the coated was damn near perfect. It also depends on what your build is too. I have watched many people on this site think the factory bottom end could take a decent turbo. It may, but for how long. People don't realize how crucial a bottom end build is for longevity and performance. I would imagine a motor with a better fueling system, bottom end, cooling system and such would defiantely be more reliable. However, upgrading the intercooler then throwing 25 pounds of boost at a motor with a chip, a K&N and a factory bottom end is not reliable. I believe the answer is yes. (Not including the trannies, propshafts and so forth) :D Sorry to write a book. My first mods will be a 4 bolt conversion, rod and piston assembly, and lots of cryogenic processing, some knife edging to the crank and so on to make one helluva bottom end. That to me is where reliability is the most key in a performace motor.
 
S

skata

Donating Member
Re: Do built engine's last longer?

spooldup said:
Do built engines last longer than a stock motor if driven normally and maintained?
Click to expand...

yes, problem is though that once you have a built engine, it is so tempting to start increasing power. :)
 
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