As I am racking up the miles...I was just wondering how many miles our engine is suppost to take before some rebuilding?

F20C is no ordinary Accord engine...how many miles do you think it is good for?

 

since none of us has gotten there, you're our trail blazer bro

i'm estimating a big refurb on my own (if i'm not forced to lose the car ) F20C at 120-150K. but that'll be where the fun starts, you know?

 

Based on the experience I have with my NSX at 80k and a buddy at 150K Super charged, I'm double downing that the FC20 should last well into 200k mark. I know a few NSX's who are still running strong at the 200 k barrier. Again, these are from cars that have the 3.0 liter motor, while the newer 3.2ltr. have cylinder sleeves that are lined.

I believe our S2k blocks have a teflon lined sleeve. This should reduce much wear and make our motor last much longer!!! cant wait to hit 200k, i'll follow your lead Phantom!!!

I have always admired honda engineering they think of every detail. Even down to the configuration of my NSX trunk to accomodate to full size golf bags perfectly.
my .02

 

I meant F20C, so used to saying FD engine from those darn rotary motors.
I guess they are similar 9000 Rpm!!

 

[QUOTE]Originally posted by Davies2k
[B] I know a few NSX's who are still running strong at the 200 k barrier.

 

[QUOTE]I believe our S2k blocks have a teflon lined sleeve /QUOTE]


Actually, we have something better than that. The F20C uses FRM (Fiber Reinforced Metal) liners. It's a composite material of carbon fibers embedded in aluminum oxide ceramic (The same stuff they make spark plug insulators out of). I know Honda has been using Nikasil (A nickel-silicone composite) liners in the motorcycles for years which is incredibly hard wearing. I would assume that the carbon-ceramic matrix is even harder wearing. I know it has superior heat transfer characteristics.

Another great innovation is the aluminum ladder-type main bearing carrier. Most car engines just use simple bearing caps. The bearing support of the F20C looks very tough, and I understand that it also increases engine rigidity signifigantly. It contains the main bearings and oil passages for their lubrication. It's like having a two piece block with the crank mounted rigidly in the middle. Really impressive stuff. It gives me a lot of confidence in the botton end.
Hard wearing, advanced composite cylinder liners, forged steel and heat treated connecting rods and crankshaft, and an incredibly strong main bearing "girdle" are what sounds to me like a very durable motor. Even camshaft wear will be nonexistant as the F20C uses low-friction roller-bearing rocker arms. The cam lobe acts on a rollers mounted midway between the rocker-arm pivot and the valve. The rollers spin on roller-element bearings for minimal friction. According to Honda, this reduces valvetrain friction by 71%. As far as I know, the F20C is the first engine to utilize this feature. Subaru changed their 2.5 liter boxer 4 from DOHC to SOHC in order to reduce valvetrain friction. I like Honda's idea a lot better!
Anyway, I'm certainly impressed and proud to own a car with such advanced racing technology. An awesome car and an awesome motor to build on...

Best regards,
Matt

 

As well built as the engine is, 9000 rpm and low gearing will take it's toll. I don't think you can compare to an NSX that probably sees 30% less revs on the average. We won't know how long the cylinder seal is good for, but I would guess it is far less than the estimates here.

 

I can't imagine Honda putting the F20 into the market unless it could live well past 100K under heavy use.

 

It would be nice to know what Honda's durability testing was.

My 2.2 VTEC 190 hp engine, red line at 7,400 rpm, is perfect at about 48,000 miles. I hope my F20C lasts 20 years and 150,000 miles.

 

I don