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Thread: S14 with SR20 or KA24

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Posts: 61-70 of 137
2008-12-05 22:52:02
#61
Originally Posted by ca18

hold a ka24 at redline and an rb20 at redline and see what one blows first even with the higher rev limit of the rb


Are you serious holding a motor at redline doesn't prove anything..... Plus if you did that the rb's oil pump would explode... so that doesn't mean ****...


Also look at Ivan Phipps S14 from AMS... I know from personal experience that car is no joke... 850whp through a auto......... with no block modifications.... show me an SR,RB,CA do that..... Also if you think revs are better than torque then you really need to read up on what make a tire spin.... UMMM oh yeah that would be torque... You think its the same to spin the tire at high rpm's but really your breaking them loose because you are releasing the clutch and popping them loose because of the faster speed of an engine...
2008-12-05 22:59:52
#62
to further make my point

if i wanted a rough as guts fast street car with limited engine space....ka24 would be on the cards

if i wanted a hills/street/drift car sr20 would be a serious contender

if i wanted a beginer drift car that i mostly wanted to slide in the rain as i dont want to go through tires/gearbox/clutches and also like to go for a strap through the hills rb20 or car would be contenders depending on the car

a biggish family car but still wanted to go to the quarter mile, and wanted a street weapon when the wifes at home....well 2jz/rb30
2008-12-05 23:01:25
#63
Originally Posted by boostin50
Are you serious holding a motor at redline doesn't prove anything..... Plus if you did that the rb's oil pump would explode... so that doesn't mean ****...


Also look at Ivan Phipps S14 from AMS... I know from personal experience that car is no joke... 850whp through a auto......... with no block modifications.... show me an SR,RB,CA do that..... Also if you think revs are better than torque then you really need to read up on what make a tire spin.... UMMM oh yeah that would be torque... You think its the same to spin the tire at high rpm's but really your breaking them loose because you are releasing the clutch and popping them loose because of the faster speed of an engine...


yeah maybe you need to read up on what the formula for torque is
2008-12-05 23:03:05
#64
please tell me more I would love to learn from you!
2008-12-05 23:03:11
#65
yeah big numbers are wicked yo, but there is a lot more to a FUN car that 850rwhp
2008-12-05 23:10:04
#66
http://http://www.vettenet.org/torquehp.html
First of all, from a driver's perspective, torque, to use the vernacular, RULES :-). Any given car, in any given gear, will accelerate at a rate that *exactly* matches its torque curve (allowing for increased air and rolling resistance as speeds climb). Another way of saying this is that a car will accelerate hardest at its torque peak in any given gear, and will not accelerate as hard below that peak, or above it. Torque is the only thing that a driver feels, and horsepower is just sort of an esoteric measurement in that context. 300 foot pounds of torque will accelerate you just as hard at 2000 rpm as it would if you were making that torque at 4000 rpm in the same gear, yet, per the formula, the horsepower would be *double* at 4000 rpm. Therefore, horsepower isn't particularly meaningful from a driver's perspective, and the two numbers only get friendly at 5252 rpm, where horsepower and torque always come out the same.

In contrast to a torque curve (and the matching pushback into your seat), horsepower rises rapidly with rpm, especially when torque values are also climbing. Horsepower will continue to climb, however, until well past the torque peak, and will continue to rise as engine speed climbs, until the torque curve really begins to plummet, faster than engine rpm is rising. However, as I said, horsepower has nothing to do with what a driver *feels*.
2008-12-05 23:20:51
#67
Originally Posted by ca18
to further make my point

if i wanted a rough as guts fast street car with limited engine space....ka24 would be on the cards

if i wanted a hills/street/drift car sr20 would be a serious contender

if i wanted a beginer drift car that i mostly wanted to slide in the rain as i dont want to go through tires/gearbox/clutches and also like to go for a strap through the hills rb20 or car would be contenders depending on the car

a biggish family car but still wanted to go to the quarter mile, and wanted a street weapon when the wifes at home....well 2jz/rb30


a hills/street/drift car would be a winner with KA24DET. You fail to see there is no sponsership behind the KA24DET motor. These drift things are about selling parts with big sponsership from big companies pushing the high volume motor, so they can make money.

A KA24DET does everything better than a SR20DET. Well it does not throw out the rockers ( way better top end design it has no rockers ). Oh they dont toss bearings as quick. Oh they are cheaper.

A KA24DET will rock a SR20DETs world any place any time. The CA18DET can just go home as oit has about the same weight as the KA24DET and has way less power than the SR20DET
2008-12-05 23:25:36
#68
Originally Posted by boostin50
http://http://www.vettenet.org/torquehp.html
First of all, from a driver's perspective, torque, to use the vernacular, RULES :-). Any given car, in any given gear, will accelerate at a rate that *exactly* matches its torque curve (allowing for increased air and rolling resistance as speeds climb). Another way of saying this is that a car will accelerate hardest at its torque peak in any given gear, and will not accelerate as hard below that peak, or above it. Torque is the only thing that a driver feels, and horsepower is just sort of an esoteric measurement in that context. 300 foot pounds of torque will accelerate you just as hard at 2000 rpm as it would if you were making that torque at 4000 rpm in the same gear, yet, per the formula, the horsepower would be *double* at 4000 rpm. Therefore, horsepower isn't particularly meaningful from a driver's perspective, and the two numbers only get friendly at 5252 rpm, where horsepower and torque always come out the same.

In contrast to a torque curve (and the matching pushback into your seat), horsepower rises rapidly with rpm, especially when torque values are also climbing. Horsepower will continue to climb, however, until well past the torque peak, and will continue to rise as engine speed climbs, until the torque curve really begins to plummet, faster than engine rpm is rising. However, as I said, horsepower has nothing to do with what a driver *feels*.


thats right, so when the torque curve in you ka24 drops off quicker because of the higher stroke than it will in a rb20 what does the driver feel?


now i am not saying that revs is better than torque, by any means, but i am saying that people want different things out of a car/engine.

also thats a over simplified explanation ever been is a diesel 4wd over a petrol one....the diesel make more torque...heaps more....what FEELS faster?
2008-12-05 23:27:22
#69
but my torque will drop to your torque peak!!! oh that sucks...

And the diesel feels faster....
2008-12-05 23:29:20
#70
Originally Posted by GTi
This is all based on what you have to work with, If the RB20 was standard in the USDM cars then you would be talking about how good it is and how many people you know with xxxwhp cars. And the relatively unknown KA24 that was only sold in Japan would be looked down upon.

Surely Nissan weren't that stupid to put an inferior engine in every single 4 pot turbo car they made?



I would not be talking about how good it is as there are many guiys with these motors in S13 and S14 bodies and they suck in my opinion. The Sr20DET is a far superior choice to the RB20DET

Surely Nissan was very smart to put the QR25DE in almost their compete line up that just sucks. These damn motors could not make it 2 years or 60,000 miles before dkicking the bucket.

Nissan choice to put the KA24DE in the S13 and S14 chasis was because they though Americans wanted tarque. They were wrong an that what brough the end of the S body in the USA. Well along with Eclipse turbos, Acura Integras and so on. The 240sx costed to much money and the motor combo was not right.

If they had sold the SR20DE in the 240sx in the USA only, it would have died the same death. The SR20DET is what made the S13 and S14 cars king, not the SR20DE. It would not have been able to compete with the othe cars in price and HP just like the KA24DE.
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