Freeing up Ponies?!

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
nissan_s13
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Quick question.....

How much HP would I be expecting to free up or gain if I am to get lightweight flywheel, lightweight under drive crank pulley, aluminum driveshaft, and a header for my ka24e? I currently have an injen intake and a 2.5" megan fullcat exhaust....

Any input is appreciated (whether it be good r bad lol) :yesnod

THX!


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scotty-2-forty
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There is no surefire way to come up with an accurate figure other than dyno testing every step of the way. You can't simply add-up the manufacturer's results either, first because it doesn't work that way ( :chuckle: ) and second because there are a lot of variables involved in their "own" results. Obviously, you will gain, but really all this is going to be is a big'ole guesstimate and I really have no clue. - Good luck though!

nissan_s13
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Man, I would love to dyno everytime I add a new part to my car and put up dyno sheets for it on here but i just simply don't have the time to do that lol. THX for the quick reply tho!

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OutToWinPAHC
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I don't like the pulley and flywheel, but you will gain from having a one piece aluminum drive shaft. I would never suggest a pulley over a proper damper, and street driving aluminum flywheels is not my cup of tea. Granted it revs faster, but they also slow down faster.

nissan_s13
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phew... i have a lot to think about...

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PEZi
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OutToWinPAHC wrote: Granted it revs faster, but they also slow down faster.
^ this

you will have to essentially re-learn to drive with all lightweight parts... things like rev matching become a necessity rather than just something to do

personally, i like it that way though... just gotta get used to it

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audtatious
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nissan_s13 wrote:Man, I would love to dyno everytime I add a new part to my car and put up dyno sheets for it on here but i just simply don't have the time to do that lol. THX for the quick reply tho!
Dyno's would be inconclusive doing it this way for the most part as you are talking small hp gains which can be nullified by environmental changes in some cases.

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Ozzie
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Post removed, stay on topic or go to gen chat for this stuff. I just saw you posted it all over, and I deleted the postings. I don't mind you having fun with it, you making a mess of good meaningful post with this garbage.

OutToWinPAHC

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audtatious
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WTF is that all about?

Maybe I should go and clear out some of our older posts :gapteeth:

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Drakelee
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dont free up what you have... just add more *KA-T*

nissan_s13
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That would be nice, but I'm waiting to find a kade first.... mines still only a kae.

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xX RB Xx
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Single Cams are great too.

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OutToWinPAHC
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Yeah, I like the single hammer. Seemed more stout

Kataki
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My single slammer blows almost blows more exaust out the tailpipe than the brand new dual cam i had in a car a few years back...and it has an exaustleak out the frame and have no clue where it is atm.

As far as power i've found an emissions vaccum delete on these cars seems to free up some ponies,or carberate that beast!
Other than that, do the exaust intake mods which give 5-10 hp at most with both to the wheels imo. id say just turbo it if you want true numbers,other wise you bought the wrong car,see my build thread title it states it pretty well

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LoserCard
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Well for I-H-E for a DE should net you at least 10-15hp to the wheels. I believe someone dynoed the lightweight pulleys and got 2-3hp to the wheels. Not sure how much ponies are freed up from lightening up drivetrain components, but I would guess 1-2whp. Honestly, if your going to have an NA build, you'd better swap to a DE. According to dyno results a perfect running condition KA24DE had only a 12.25% drivetrain loss with 136hp being driven to the wheels. Match that up with I-H-E that bumps that up to at least 146whp, then pulley/flywheel/driveshaft adds another 3hp at least. Current total: 149whp. Dual exhaust cam swap is another 5hp, and a tune to work in all that massive airflow through mods which should add roughly 8-10whp. With a grand total of at least 162whp and 170torque. BTW I get these numbers and results from someone who has done everything I mentioned so I am not just blowing hot air. This is the build I am aiming towards and it also is a perfect base for going turbo as well.

However, if you do plan on keeping the SOHC, it is without a doubt to go the turbo route, because I don't believe an SOHC can pull off those numbers without swapping internals.

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audtatious
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LoserCard wrote:I believe someone dynoed the lightweight pulleys and got 2-3hp to the wheels.
I can take a stock car and no single dyno will be the same. 2-3hp is insignificant gains to be proof of anything.

Not saying it's incorrect, just not verifiable with such a small change and limited dyno's.

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breadbox
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I'd say like PAHC did and get a lightened Driveshaft.

I prefer stock exhaust mainifold on the KAe over a header, especially in terms of fitment. Yeas it does weigh alot but it also has good low end, where a header will move your power to mid to high.

Lightened pulleys will help lighten rotating mass but I wouldnt turbo it with it still there, unless you pickup something like the ATI unit. But it costs a good deal of change.


I would say if you want power increase get the CXracing kit and change things from there down the line.

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allenms240
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OutToWinPAHC wrote:I don't like the pulley and flywheel, but you will gain from having a one piece aluminum drive shaft. I would never suggest a pulley over a proper damper, and street driving aluminum flywheels is not my cup of tea. Granted it revs faster, but they also slow down faster.
I head lightweight pullies throw the balance of the KAs

nissan_s13
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I love my single slammer... but I think getting a DE would be the best option left for me... its just that they're hard to find since every time it pops up in the classifieds someone has already bought it.... still looking atm XD

Kataki
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nissan_s13 wrote:I love my single slammer... but I think getting a DE would be the best option left for me... its just that they're hard to find since every time it pops up in the classifieds someone has already bought it.... still looking atm XD
That and everyone everywhere keeps blowing holes in the sides of em

nissan_s13
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Sweet just today i found a nice burgandy 240sx for 600bucks. Looks like a 92 or 93 hatch, se with power windows and sunroof. The guys said everything works.. just a bad alternator. Im hoping to get it in the next few weeks b/c he's still filing for a new title for the car. :)

WISH ME LUCK!!

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fiznowler
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clutch fan delete!

nissan_s13
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Clutch fan delete? Do you know of a DIY post?

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fiznowler
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yeah go to the tech articles electric fan setup.


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