Car Forums  

Go Back   Car Forums > Vehicle Specific > Asian Imports
FAQ Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-05-2004, 04:22 PM   #1
KA24DE-T
CF Newbie
 
Join Date: Oct 2004
Posts: 6
Exclamation KA24DE-T Vs. SR20DET

This debate is really kind of amusing to me... In the last thread about this more people said that the SR20DET will produce more power at it's redline of 7500 rpm... This is not true... HP = T(rpm) The KA will produce an outstanding amount of tourque that surpasses the SR motor... Therefore the redline of the KA (6500), 1000 less of an rpm, will not make a big enough difference... Just to clear things up! I have a 95' Nissan Altima with a turbocharged KA, and a buddy of mine has a 93 Turbo 240SX, with is the SR20DET... To be honest he has no chance whatsoever in keeping up with me...

Last edited by KA24DE-T : 10-05-2004 at 04:27 PM.
KA24DE-T is offline   Reply With Quote
Old 10-05-2004, 11:28 PM   #2
DSMer
CF Extraordinaire
 
DSMer's Avatar
 
Join Date: Jun 2004
Location: Chicago, IL
Posts: 1,639
Quote:
Originally Posted by KA24DE-T
This debate is really kind of amusing to me... In the last thread about this more people said that the SR20DET will produce more power at it's redline of 7500 rpm... This is not true... HP = T(rpm) The KA will produce an outstanding amount of tourque that surpasses the SR motor... Therefore the redline of the KA (6500), 1000 less of an rpm, will not make a big enough difference... Just to clear things up! I have a 95' Nissan Altima with a turbocharged KA, and a buddy of mine has a 93 Turbo 240SX, with is the SR20DET... To be honest he has no chance whatsoever in keeping up with me...

Finally, some educated people that have thought processes that can be agreed upon.
__________________

...Everyone is entitled to their own opinion. It's just that yours is stupid...
DSMer is offline   Reply With Quote
Old 10-06-2004, 12:39 AM   #3
s13_Drifter
CF Newbie
 
s13_Drifter's Avatar
 
Join Date: Jul 2004
Location: Texas
Posts: 55
just to clear your formula up, its HP=T(rpm)/5252 being that is the point at which the HP and torque curves intersect at 5252 rpm. So if you're talking about the comparison between the rpm's try not to leave out this important part to the formula. That is if you want the rpms of the resulting HP if you have the torque numbers.
__________________
s13_Drifter is offline   Reply With Quote
Old 10-06-2004, 03:53 PM   #4
KA24DE-T
CF Newbie
 
Join Date: Oct 2004
Posts: 6
Irrelevance...

Youre right, i forgot to include the point of intersection, which is irrelevant if youre comparing 2 cars... Your dividing both equations by 5250, which will make the higher number still higher... I save time and leave that out during a comparison...
The point im trying to make is that the torque being made by the KA far surpasses the extra 1000 rpm's of a rev in the HP equation...
The new superstreet magazine includes an article on this topic, and to summarize what they say ill include an age old quote... "THERE IS NO REPLACMENT FOR DISPLACMENT"

Last edited by KA24DE-T : 10-06-2004 at 03:56 PM.
KA24DE-T is offline   Reply With Quote
Old 10-14-2004, 07:36 AM   #5
57ock
CF Addict
 
Join Date: Nov 2002
Posts: 316


We have a KA24DET with forged pistons and a Garrett GT25 turbo rated at 400hp, upgrade injectors and fuel system. In the other corner with a a Sr20det, nothing done to it, factory T25G turbo rated at around 220hp -240hp? Factory motor transplanted into a 240sx. Both cars have 3" exhausts and front mount intercoolers. Doesn't take much intelligence realise the KA24DET powered 240sx would toast the Sr20det.

Now lets compare a 240sx with a Sr20det with forged pistons, Garrett GT30 turbo rated at 550hp, aftermarket injectors and boost set to 20psi. The Sr20 powered car would toast the KA24DET power 240sx.

In other words, who ever motor had the most work, runs the most boost and has the bigger turbo installed. Will win!!!

So please, install a T2 on a KA24det and see how quick it goes?

In addition to that, the T25G turbo on the Sr20det runs out of puff at 15psi @5000rpm. Now, why does the t25g run out of puff at 5,000rpm @ 15psi on a sr20det?
__________________
www.car-forums.com
57ock is offline   Reply With Quote
Old 10-14-2004, 01:27 PM   #6
DSMer
CF Extraordinaire
 
DSMer's Avatar
 
Join Date: Jun 2004
Location: Chicago, IL
Posts: 1,639
Quote:
In other words, who ever motor had the most work, runs the most boost and has the bigger turbo installed. Will win!!!

Not always true. Yeah its more than likely that any engine with a bigger turbo and running higher boost would automaticly give off higher crank numbers, but that does'nt mean that the KA24-T would loose if placed in a 240SX.

Again as I have stated earlier, 550HP seems easy with the SR20DET. Hell with the ammount of misinformation going arround 550HP seems easy period. I can assure you it is NOT. I've worked on numerous 240's with KA24T's blocks and SR20T's. While the cars with SR20's tend to respond to mods very well and give generally good horspower ratings, the KA24's always come through in the end. The powerband on the KA24 and the ammount of boost you'll be able to run would kill most SR20's on the quartermile.

Its just that simple....
__________________

...Everyone is entitled to their own opinion. It's just that yours is stupid...
DSMer is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Forum Jump



All times are GMT +1. The time now is 05:34 PM.

Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 2002 - 2011 Car Forums. All rights reserved.