Turbo & longevity?

broncr

broncr

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I've been reading through the old posts, with an eye out for many things. One topic that I haven't bumped into yet is what effect a turbo has on the longevity of the 300. It stands to reason that pumping up the juice would shorten the lifespan, but does anyone have some real world input?

Given proper maintenance and caution, would you still expect a turbo'd 300-6 to go 300 (K)? I'm not talking about driving it so easy that there's no use in having it... I wouldn't be racing it (a lot) either...
 
I would think that the life span of the engine would be shortened, but only a little. Anytime you add more stress to an engine it will see more wear.

I think the area that will see the largest increase in wear would be the piston rings, due to the higher cylinder pressures.
I don't think there would be an increase of wear in the bearings though, they are more than capable of handling it.

Keep in mind that what will stop this engine is a blown head gasket. As the rings wear they will start to loose oil control. That will cause the oil to enter the combustion chamber and drasticly lower the effective octane of the gasoline.
The engine will see detonation and the old head gasket will blow.

With good quality rings, I think you could get 200 thousand easily.

IMHO,
John
 
Well...just some real world examples. Volvo has been putting turbos in cars for a long time, and they last forever (for the most part).

So long as you don't run excessive boost, you may find your engine lasts longer because you don't have to rev the engine to get power.

Slade
 
with a turbocharged car it is imperitive that you change oil at half the rate of what the factory list it at.

so if ur car is recomended to change oil every 10,000 miles then you should change a turbo'd one at 5,000 miles. this way the turbo and also the engine gets a longer life.

turbocharged cars tend to heat the oil a bit more then n/a cars and once you start heating that oil it breaks down, break it down enuf and it wont be doing its jobh for much longer.

this way the turbo and also the engine gets a longer life.

boost dosnt kill engines... its detonation.. so have the car properly dyno tuned and keep an eye on fuel mixtures every now and again.

there should be no reason why a turbo'd n/a motor will live a loooong happy life for many years to come.

cheers.joe.
 
If you are comparing a stock motor to a turboed one, sure the stock one will probably last longer, but if you are comparing a NA motor to a turbo motor of equal power, then he turbo motor will outlast the NA one by a long shot (assuming you change the oil in regular intervals, tune it properly, etc...). NA motors have a very peaky cylinder pressure, where turbo motors have a much broader, flatter cylinder pressure. If both have the same BMEP the NA motor will have a much higher peak pressure, and therefore cause more stress and wear on the engine.
 
Two words: SYNTHETIC OIL.

Catastrophic failure and detonation notwithstanding, what kills motors is heat, and heat leads to wear. Turbo motors are much harder on oil in this respect, so if you want longevity, a synthetic oil changed at regular intervals will put you many miles further down the road...

Oh yeah, a righteous balance job will put you miles ahead as well. :wink:
 
For most turbo engines, the engine will outlast the turbo. I second the synthetic oil argument. Especially with some of the newer weight of oils available. In my Volvo, I run Mobil 1 0w40. Engine has 105k miles, and the turbo is just starting to show signs of wear (you can actually hear it spin up now if you really listen for it, but I like that sound).

Slade
 
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