what wears out in our engine first
#1
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what wears out in our engine first
I was wondering what is the first thing that wears out in the engine? do you have to worry about the piston rings or the springs/retainers/valves? Or is there something else?
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I just passed the 95k mark. So I want to see what's coming up for me. I don't expect anything to actually break but weat out.
p.s. That's 95k miles like ... and this
p.s. That's 95k miles like ... and this
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In terms of hurting performance, I would say rings and valve seats. In terms of oil consumption, valve seals followed by valve guide. In terms of material fatique, I don't have enough experience on the S in that regard (which can be a good thing ) to say.
#7
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Has anyone had a failed valve retainer?
I remember that a lot of the valve design mirrors what they used in the Indy(Champ) car engines when Honda dominated the series in the late 90s.
I had a recent short block change and valve seals change to fix an oil consumption problem. I am not sure if they replace the valve retainer and guides?
I remember that a lot of the valve design mirrors what they used in the Indy(Champ) car engines when Honda dominated the series in the late 90s.
I had a recent short block change and valve seals change to fix an oil consumption problem. I am not sure if they replace the valve retainer and guides?
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#9
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Purely from an efficiency perspective, your valve seats will wear out first. If anyone remembers Mark Donahue, one of his "Unfair Advantages" that he used was to have a valve job ONLY done on his race engines. What he found was that once the rings were seated to the cylinders, there was less friction, and that he could gain extra horsepower by doing just a valve job.
So, if you're looking to recover some hp, or mileage, a valve job would be the place I'd start first. BTW, Donahue was a mechanical engineer, who used his engineering skills to increase his competitiveness.
So, if you're looking to recover some hp, or mileage, a valve job would be the place I'd start first. BTW, Donahue was a mechanical engineer, who used his engineering skills to increase his competitiveness.
#10
Originally Posted by JDR159,Mar 6 2006, 09:15 AM
Purely from an efficiency perspective, your valve seats will wear out first. If anyone remembers Mark Donahue, one of his "Unfair Advantages" that he used was to have a valve job ONLY done on his race engines. What he found was that once the rings were seated to the cylinders, there was less friction, and that he could gain extra horsepower by doing just a valve job.
So, if you're looking to recover some hp, or mileage, a valve job would be the place I'd start first. BTW, Donahue was a mechanical engineer, who used his engineering skills to increase his competitiveness.
So, if you're looking to recover some hp, or mileage, a valve job would be the place I'd start first. BTW, Donahue was a mechanical engineer, who used his engineering skills to increase his competitiveness.