J's 300PS S2000
Originally Posted by silver j,Mar 9 2007, 06:23 PM
hmm...should have been there yesterday...but at least you got it for the weekend, glad to see it worked out.
Originally Posted by silver j,Mar 9 2007, 02:17 PM
i think we're comparing apples to oranges when comparing engine building between japan and the US. J's doesn't give a crap about how much hp they make, they care that the engine is still running strong at the end of the race. to compare a drag car to a super taikyu car is retarded and has zero relevance to engine building techniques. a drag car is meant to run what...5 times a day? then it's completely tore apart and rebuilt. a super taikyu car has strict guidelines as to what can be done to it modification wise, so you can't just sit there and say that they should be making more power. gt racing in japan is very restricted in hp and modifications, it's all about building as efficient of an engine as possible in super taikyu and it's all about aerodynamics in super gt since all of the engines have hp limits.
show me some of these high hp US motors last as long in extreme conditions like the endurance races in Japan. Opak consistently wins US endurance races with their Spoon built engines, as does King Motorsports with their Mugen backed engines. US is always known for hp, Japan is known for reliability.
show me some of these high hp US motors last as long in extreme conditions like the endurance races in Japan. Opak consistently wins US endurance races with their Spoon built engines, as does King Motorsports with their Mugen backed engines. US is always known for hp, Japan is known for reliability.
Who brought up drag? I have never even driven on a drag strip. What isn't reliable about making 275hp on a virtually stock engine? Surely I am not stressing anything more so then factory aside from the rev limit and that has proven itself quite safe. The only things in my engine that aren't Honda are my cams, which are manufactured by a company that builds camshafts that see over 19,000RPM in Super Bike racing. My valve train is built to IRL specs, pretty damn severe conditions for valve train parts, 200 laps at nearly 20K RPM. I would say reliablity is an issue for sure. Other then that everything internally is as Honda delivered it, the head hasn't even been off the block.
I can certainly say that it is pathetic that it took 13+ points of static compression to get to 300hp because it is. J's and the other Japanese Honda tuning companies make many great things for sure, but they leave much to be desired in the engine tuning department. One can be a great engine builder and not know a damn thing about BSFC, peak cylinder pressure, venturi, thermal expansion, atomization etc.
Again, I am not knocking J's, Spoon, or any of the other Japanese Honda tuners racing efforts. They do amazing things with chassis setup and the like, better then most running the cars for sure. But they are NOT the holy grail for Honda engine tuning.
Originally Posted by MINES13,Mar 9 2007, 04:45 PM
Efficiency is efficiency no matter how you cut it, there is a wrong way and right way to make and engine efficient and with efficiency comes horsepower. True, rules are rules if the HP limit in a given class is X then you better make X. I don't believe anyone is disputing this.
Who brought up drag? I have never even driven on a drag strip. What isn't reliable about making 275hp on a virtually stock engine? Surely I am not stressing anything more so then factory aside from the rev limit and that has proven itself quite safe. The only things in my engine that aren't Honda are my cams, which are manufactured by a company that builds camshafts that see over 19,000RPM in Super Bike racing. My valve train is built to IRL specs, pretty damn severe conditions for valve train parts, 200 laps at nearly 20K RPM. I would say reliablity is an issue for sure. Other then that everything internally is as Honda delivered it, the head hasn't even been off the block.
I can certainly say that it is pathetic that it took 13+ points of static compression to get to 300hp because it is. J's and the other Japanese Honda tuning companies make many great things for sure, but they leave much to be desired in the engine tuning department. One can be a great engine builder and not know a damn thing about BSFC, peak cylinder pressure, venturi, thermal expansion, atomization etc.
Again, I am not knocking J's, Spoon, or any of the other Japanese Honda tuners racing efforts. They do amazing things with chassis setup and the like, better then most running the cars for sure. But they are NOT the holy grail for Honda engine tuning.
Who brought up drag? I have never even driven on a drag strip. What isn't reliable about making 275hp on a virtually stock engine? Surely I am not stressing anything more so then factory aside from the rev limit and that has proven itself quite safe. The only things in my engine that aren't Honda are my cams, which are manufactured by a company that builds camshafts that see over 19,000RPM in Super Bike racing. My valve train is built to IRL specs, pretty damn severe conditions for valve train parts, 200 laps at nearly 20K RPM. I would say reliablity is an issue for sure. Other then that everything internally is as Honda delivered it, the head hasn't even been off the block.
I can certainly say that it is pathetic that it took 13+ points of static compression to get to 300hp because it is. J's and the other Japanese Honda tuning companies make many great things for sure, but they leave much to be desired in the engine tuning department. One can be a great engine builder and not know a damn thing about BSFC, peak cylinder pressure, venturi, thermal expansion, atomization etc.
Again, I am not knocking J's, Spoon, or any of the other Japanese Honda tuners racing efforts. They do amazing things with chassis setup and the like, better then most running the cars for sure. But they are NOT the holy grail for Honda engine tuning.
i am not saying that japanese engine builders are the end all, my opinion is that US engine builders are much better at making hp while japanese builders are better at building reliable engines.
i would really like to see s2k racing out here done as they do in the super taikyu series in japan though and put an end to all of this debate
Originally Posted by silver j,Mar 9 2007, 08:21 PM
i am not saying that japanese engine builders are the end all, my opinion is that US engine builders are much better at making hp while japanese builders are better at building reliable engines.
If the buying population were into buying reliability, companies here would be selling it. It's pure economics.
Originally Posted by FF2Skip,Mar 9 2007, 08:17 PM
Uh, companies make what people will buy. Unfortunately, most America has always been about being the biggest and the best. In a time when folks buy more house than they can afford on interest-only loans(speculative and d-u-m-b), it should be no suprise that the general public is consumed by numbers.
If the buying population were into buying reliability, companies here would be selling it. It's pure economics.
If the buying population were into buying reliability, companies here would be selling it. It's pure economics.

Originally Posted by MINES13,Mar 9 2007, 11:23 PM
I don't even know where the assumed lack of reliability came from. The factory bottom end is pretty damn reliable, as with pretty much any inline 4 Honda power plant. the whole thing is freaking forged and girdled for god sakes. Putting 10psi to a stock bottom end is WAY more abusive then dropping in some cams. 


Sorry, but I'm not a Honda fan nor is the American performance buying public solely JDM fans. I was speaking in generalities. I like and enjoy the S2000, but you'll never find me in a Civic, Accord, Camry, etc.
The motor indeed makes the hp announced. A guy here in Greece just installed it and the motor complimented with the all the other J's stuff made 313hp (about 273whp). The car is very very fast. He will be featured in a tuning magazine here in Greece soon and yesterday they did some tests. 0-100Km (-60mph) ---> 5 sec and 0-400m ---- 13 sec. The owner also had a street encounter with a M3 E46 and they floored from the 2nd shift up to 5th and the S2000 was more than 2 cars length ahead. He also has a 4.3 final gear installed. The car is really good. If you are interested , maybe i can refer the owner to this topic to give you more information.
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