EcoBoost Makes Ward's 10 Best Engine List
Read the full story here. The article talks about the "heavily revised" second gen design so sounds like they fixed some of the issues that plagued early adopters. I'm still a fan of big displacem...
Forum Discussion
Me to...am a big block fan, but know am in the minority that is shrinking...
It boils down to PSI on the piston top for any ICE
Small displacement crammed with big block amounts of air and fuel behaves like a big block, as the PSI force to the crank is in the same ball park as a big block. Know folks don't understand why their tiny displacement gets similar/same MPG towing same/similar trailer as a big V8...telling that they don't understand this crammed amount of fuel/air into a small cylinder thing...
Issues 'have been' blowing holes in the pistons, bending connecting rods, bending cranks, wearing out crank journals, blowing holes in cylinder walls and the biggie...keeping a small surface area block/head cool while producing big block amounts of power.
There just isn't enough surface area on these small displacement ICE's to manage the amounts of heat...unless expensive to design, test and build measures are taken
Part of the why there is a engine oil spray inside the block jetting to the bottom of the piston/rod/crank. Would assume the journal bearing dia & width is in the order of a big block's...and bet even larger, as that amount of power is spread over 4 journals or 6 journals vs 8 journals.
Minor stuff that will kill these small displacement ICE's quickly is engine oil PSI/GPH. If the oil film is lost and the journals go metal to metal too often...catastrophic failure very soon... A misfire one time too many on these small displacement with big block amounts of fuel/air can destroy itself in a hurry. Betcha they go into any of the levels of limp mode more easily/often than my big block
Duty cycle rating for towing heavy is way different than when using the same TV as a 'car'. Folks who compare racing vs towing miss that point and/or do NOT understand duty cycle rating
Still waiting for the used and rebuild market reports. As how much is left to rebuild is still a big question to me
It boils down to PSI on the piston top for any ICE
Small displacement crammed with big block amounts of air and fuel behaves like a big block, as the PSI force to the crank is in the same ball park as a big block. Know folks don't understand why their tiny displacement gets similar/same MPG towing same/similar trailer as a big V8...telling that they don't understand this crammed amount of fuel/air into a small cylinder thing...
Issues 'have been' blowing holes in the pistons, bending connecting rods, bending cranks, wearing out crank journals, blowing holes in cylinder walls and the biggie...keeping a small surface area block/head cool while producing big block amounts of power.
There just isn't enough surface area on these small displacement ICE's to manage the amounts of heat...unless expensive to design, test and build measures are taken
Part of the why there is a engine oil spray inside the block jetting to the bottom of the piston/rod/crank. Would assume the journal bearing dia & width is in the order of a big block's...and bet even larger, as that amount of power is spread over 4 journals or 6 journals vs 8 journals.
Minor stuff that will kill these small displacement ICE's quickly is engine oil PSI/GPH. If the oil film is lost and the journals go metal to metal too often...catastrophic failure very soon... A misfire one time too many on these small displacement with big block amounts of fuel/air can destroy itself in a hurry. Betcha they go into any of the levels of limp mode more easily/often than my big block
Duty cycle rating for towing heavy is way different than when using the same TV as a 'car'. Folks who compare racing vs towing miss that point and/or do NOT understand duty cycle rating
Still waiting for the used and rebuild market reports. As how much is left to rebuild is still a big question to me
