what kind of swap can i put in my 240
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From: أنا لست إرهابيا
Originally posted by mpg9999
The KA has harmonic issues much past 7k rpm which can result in catastrophic bottom end failure, like the main caps seperating from the block! The SR20's finger follower valve train also allows higher valve velocities and more area under the lift curve. The SR's ports also flow better. The SR has lower piston speeds and will rev higher with less mechanical stress.
The KA has harmonic issues much past 7k rpm which can result in catastrophic bottom end failure, like the main caps seperating from the block! The SR20's finger follower valve train also allows higher valve velocities and more area under the lift curve. The SR's ports also flow better. The SR has lower piston speeds and will rev higher with less mechanical stress.
Just to let you know the stock SR head isn't good much past 7 maybe 8K. The rockers have a nasty habit of just deciding to come off. The SR might have the most beastly stock bottom end, but the head leaves much to be desired.
Until you start approaching the 400 HP range the KA will be cheaper. Now which one you think is more fun to drive or gets more "oohs and aahs" is another story.
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sr's arent all that, kojima needs to step down on his ego and shit talking about other nissan motors that were designed for different purposes. Cam choice and i/e manifold design decide how the car makes power. But i'd like to put a KA head on an SR bottom end. The direct acting valvetrain of the KA has such a high revving capability and no fear of breaking parts with no rocker arms or valve lash adjusters. You know what you get if this was possible? an RB series motor, stout bottom ends with direct acting vavletrain. dunno why the SR is a bastard motor.
i romped on an SR this weekend with my 5psi KAT. yeah JR from maryland runs mid 13's and i took him out at 5psi. revving to 6200rpm. This KA was meant for torque, so you have to use it correctly to go fast. A ka can be just as fast if not faster than an SR, there was a thread i wrote a while ago with dyno comparisons of a KA being vastly superior to my own home brewed SR20 setup in the race car. try to find it.
the fastest 240 in the country ran a 10.83@ 130something. it used a KA.
as for what motor to use, you have to decide that. but another one to throw into the selection box is a VG30DETT from a 300z TT. or even a NA VG. its not hard no custom mounts are needed. if you decide to go this route i'll tell you how.
i romped on an SR this weekend with my 5psi KAT. yeah JR from maryland runs mid 13's and i took him out at 5psi. revving to 6200rpm. This KA was meant for torque, so you have to use it correctly to go fast. A ka can be just as fast if not faster than an SR, there was a thread i wrote a while ago with dyno comparisons of a KA being vastly superior to my own home brewed SR20 setup in the race car. try to find it.
the fastest 240 in the country ran a 10.83@ 130something. it used a KA.
as for what motor to use, you have to decide that. but another one to throw into the selection box is a VG30DETT from a 300z TT. or even a NA VG. its not hard no custom mounts are needed. if you decide to go this route i'll tell you how.
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From: أنا لست إرهابيا
Originally posted by Greaser
But i'd like to put a KA head on an SR bottom end.
But i'd like to put a KA head on an SR bottom end.
The SR bottom end was designed by Nissan's best engineers, the head was designed by the summer interns
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Got a 1995-1996 240SX? Want a new front bumper?
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From: ?
Originally posted by mpg9999
....."the KA24 has structural problems with the block and piston speed issues so ultimately the SR20 will produce more power. The KA has harmonic issues much past 7k rpm which can result in catastrophic bottom end failure, like the main caps seperating from the block! The SR20's finger follower valve train also allows higher valve velocities and more area under the lift curve. The SR's ports also flow better. The SR has lower piston speeds and will rev higher with less mechanical stress.
For racing the SR is much better suited but its hard to compare both here as the 240 is a much better chassis. RWD mutilink and good geometry strut front suspension is going to kick the Sentra's econobox strut chassis's ass. In a drag race the 240 will always hook up better all other things being equal. The SE-R is hampered by a butter like transmission that shreads third gear easily.
It is difficult but not imposible to get a turbo KA much over 400 hp but it is super easy to get 400+ hp out of an SR20. The most powerful turbo KA's I know get in the mid 400 hp range while the most powerful SR I have worked on made 540 hp in streetable configuration and later 650 hp...." -Mike kojima
....."the KA24 has structural problems with the block and piston speed issues so ultimately the SR20 will produce more power. The KA has harmonic issues much past 7k rpm which can result in catastrophic bottom end failure, like the main caps seperating from the block! The SR20's finger follower valve train also allows higher valve velocities and more area under the lift curve. The SR's ports also flow better. The SR has lower piston speeds and will rev higher with less mechanical stress.
For racing the SR is much better suited but its hard to compare both here as the 240 is a much better chassis. RWD mutilink and good geometry strut front suspension is going to kick the Sentra's econobox strut chassis's ass. In a drag race the 240 will always hook up better all other things being equal. The SE-R is hampered by a butter like transmission that shreads third gear easily.
It is difficult but not imposible to get a turbo KA much over 400 hp but it is super easy to get 400+ hp out of an SR20. The most powerful turbo KA's I know get in the mid 400 hp range while the most powerful SR I have worked on made 540 hp in streetable configuration and later 650 hp...." -Mike kojima
this is the last place i thought i would ever see this discussion. anyways see here http://forums3.freshalloy.com/ubbthr...b=5&o=&fpart=1
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From: ?
Originally posted by Greaser
i romped on an SR this weekend with my 5psi KAT. yeah JR from maryland runs mid 13's and i took him out at 5psi. revving to 6200rpm. This KA was meant for torque, so you have to use it correctly to go fast. A ka can be just as fast if not faster than an SR, there was a thread i wrote a while ago with dyno comparisons of a KA being vastly superior to my own home brewed SR20 setup in the race car. try to find it.
i romped on an SR this weekend with my 5psi KAT. yeah JR from maryland runs mid 13's and i took him out at 5psi. revving to 6200rpm. This KA was meant for torque, so you have to use it correctly to go fast. A ka can be just as fast if not faster than an SR, there was a thread i wrote a while ago with dyno comparisons of a KA being vastly superior to my own home brewed SR20 setup in the race car. try to find it.
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steve to my knowledge those are SOHC's and are turned past 7k only in extreme "i have to win" conditions.
abacus has two 240's in competition and they are SOHC truck motors. i've spoken with chuck about them and got this info. PDM racing in canada has the same spec cars and they provided similar info.
abacus has two 240's in competition and they are SOHC truck motors. i've spoken with chuck about them and got this info. PDM racing in canada has the same spec cars and they provided similar info.