What mechanical components prevent 04 s2k from reving to 9k
12-09-2003, 07:56 AM
#42
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first ill say it again your pic of that blue s2k in your avatar makes me love the car more....
not exactly... so what changed, not questioning you just want to know how the comp ratio went up, its minimal though.
not exactly... so what changed, not questioning you just want to know how the comp ratio went up, its minimal though.
12-09-2003, 08:28 AM
#44
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Originally posted by TurboVtk
first ill say it again your pic of that blue s2k in your avatar makes me love the car more....
not exactly... so what changed, not questioning you just want to know how the comp ratio went up, its minimal though.
first ill say it again your pic of that blue s2k in your avatar makes me love the car more....
not exactly... so what changed, not questioning you just want to know how the comp ratio went up, its minimal though.
I wasn't exactly questioning your assumption either, merely pointing out that compression ratio isn't solely dependent on the shape of the piston. CR = V_bdc / V_tdc. More likely than not, the 11.1:1 CR is more of round estimation. I do suspect that more than just the stroke has changed.
12-10-2003, 06:56 AM
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According to Honda engineers at the press conference in some American magazine...i read in NYC couple of months ago...
the 2004 fc22 can handle 9K rpm limit but the only problem is the piston rods would not told for long. To escape that problem they believe by lowering pistons speed with dropping the rev limiter will give same engine life as previous s2k.
So the current rods are forge steel...you'll need them made from titanium or tungsten. I recommend the tungsten because its it the strongest alloy we have on earth that we know of coming from the chem. table. But titanium is cheaper and there are companies who will make the for you.
The cams may need a change too I
the 2004 fc22 can handle 9K rpm limit but the only problem is the piston rods would not told for long. To escape that problem they believe by lowering pistons speed with dropping the rev limiter will give same engine life as previous s2k.
So the current rods are forge steel...you'll need them made from titanium or tungsten. I recommend the tungsten because its it the strongest alloy we have on earth that we know of coming from the chem. table. But titanium is cheaper and there are companies who will make the for you.
The cams may need a change too I
12-10-2003, 10:16 AM
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What do you suppose is the manufacturer incremental cost for using titanium rods versus forged steel? We all know how much that kind of thing costs as an "aftermarket mod" where you're subsidizing the low-volume specialty engineering and manufacturing for some small tuning shop. But, versus the existing rods, what would it have cost Honda to put titanium rods in the '04 engine and up the redline? What would it have added to the bottom line cost of producing the car? I suspect that it wouldn't have been that much...