what will give me the most bang for the buck?

[club240sucks]

ok.. i replaced all of my suspension components and brakes... now im ready for some engine upgrades, bolt ons whatever.... im asking from the biggest collection of 240 owners...from personal experience.. what will give me the most power for the dollar?

this is my first nissan.... let alone import... help me out please.

[DjPantsSpecR]

oh well, then lemme be the first to say....

TURBO. always is, and always has been the most power per dollar.

Nitrous Oxide. no one here talks about it, as there is a certain stigma associated with it. but the more and ore i think about it ther more and more i need a 75 shot.

[koukicody]

If you want to keep it n/a thena quality intakeheader exhaustmaybe high flow catand a lightweight underdrive pulley

[redtop91]

Forced Induction PS make sure you do it right the first time, swap an SR20

[Bigvinnie]

TURBO. always is, and always has been the most power per dollar.

Are you shure about that Dj??? Last I checked super chargers raise larger AE's without being intercooled. Turbo's on the other hand don't....

But I would say the biggest bang for your buck would be a Biki Rom..... It is adaptable for NA, or FI and for under $300 can maximize performance...
Modified by Bigvinnie at 2:47 AM 12/3/2006

[DjPantsSpecR]

ha, im definately going the supercharger route.

its jsut not as cheap for someone who can afford to fabricate things themselves. plus options liek the one i wanna do allows for intercooling.

so i shoulda jsut said forced induction, but these days at least i can safely say that technically you could pull a turbo KA off with off the shelf parts or an SR20 for pretty cheap. a super would be easier and cheaper too do, if you can DIY.

[sunnys14]

buy a nitrous kit and do a 50 wet shot. 400 bucks and u got yourself some power in a bottle.

[KATwo40]

Wow, this one could get outta hand pretty easily. We all need to make certain we don't go nutso on misconceptions and generalizations or this poor guy is gonna be tryin' to bolt a Kenne Bell supercharger onto his RevHard turbo manifold. LOL

Best bang for the buck...that's really subjective.

Pros and cons of each would be a better way to decide which is for you.

Turbocharging:

Pros- Power is always there, does not need refilling. Also, with intercooling, more power can be made without internal engine modification than any other power adder. It's been proven over and over that the DOHC handles upwards of 350whp on stock internals, over the long term.

Cons -Pretty darned expensive. Even a budget build will be $1500 or so. Also, requires a little more knowledge and experience than just replacing spark plugs and changing oil (not that you couldn't learn).

Supercharging:

Pros- Instant forced induction, no lag time (if you use a roots-type blower). No need for a special exhaust manifold (or intake manifold if using a centrifugal charger).

If using a roots-type charger, no need for charge cooling on low boost.

If using a centrifugal charger, can easily intercool.

Cons -Roots blowers must run low boost on stock internals because of super high intake temps. A roots blower runs at an average of maybe 60-65% efficiency, making for VERY high intake temps. However, they get by with running no intercooler because the cylinder pressures aren't terribly high. This is a result of internal compression (air is compressed before it exits the charger...independent of the cylinder head).

Roots blowers are tricky to intercool (or aftercool, more appropriately) and this can be expensive to set up.

Centrifugal chargers still should use an intercooler. While there is no exhaust heat transfer like you get from a turbocharger, there is still the friction created by the adiabatic process (centrifugal compression), resulting in higher than desireable intake temps. These high temps in conjunction with high cylinder pressures result in high probability of knock. So, intercooling is good with these.

Neither a centrifugal or roots charger are cheap.

Nitrous:

Pros -Instant power at the push of a button/click of a switch. No lag, as would be associated with a turbo or centrifugal supercharger. Quite safe when used appropriately. Little cost to fill a 10lb bottle. Isn't used all the time, so fuel economy remains the same.

Cons -Must pay to refill the bottle every time. Can only use @ WOT. Not street legal. Not legal for use on road courses or autoX events.

Then, of course there are the smaller bolt-on parts, such as intakes, exhausts, high output ignition units, etc. These are pretty much considered an upgrade to ANY of the modifications listed above.

You just have to research these things thoroughly and decide which is the one for you.

[9240sx]

With a NA KA24de,The best mods i remember were the Injen intake with the cold air extension,And the Hotshot header..I did lots of other boltons when i had the KA but those two were for sure the biggest power adders on the butt dyno...The others i couldnt really feel a differents,Like with the catback,Hi-flow cat,Crank pulley,.......

[boznuttz]

Best bang for the buck: proper research and knowledge.

[SSS]

Best bang for the buck: proper research and knowledge.

Get sliders to build you a motor.

[fknfst40]

buy a nitrous kit and do a 50 wet shot. 400 bucks and u got yourself some power in a bottle.

yup there you go nitrious!

[neverlift]

yep sliders build the best fastest ka around sss you might actually get him some work or a job. lol

[Reno]

Forced Induction PS make sure you do it right the first time, swap an SR20

Forced Induction PS make sure you do it right the first time, swap an CA18

[wankelTII]

Wow, this one could get outta hand pretty easily. We all need to make certain we don't go nutso on misconceptions and generalizations or this poor guy is gonna be tryin' to bolt a Kenne Bell supercharger onto his RevHard turbo manifold. LOL

Best bang for the buck...that's really subjective.

Pros and cons of each would be a better way to decide which is for you.

Turbocharging:

Pros- Power is always there, does not need refilling. Also, with intercooling, more power can be made without internal engine modification than any other power adder. It's been proven over and over that the DOHC handles upwards of 350whp on stock internals, over the long term.

Cons -Pretty darned expensive. Even a budget build will be $1500 or so. Also, requires a little more knowledge and experience than just replacing spark plugs and changing oil (not that you couldn't learn).

Supercharging:

Pros- Instant forced induction, no lag time (if you use a roots-type blower). No need for a special exhaust manifold (or intake manifold if using a centrifugal charger).

If using a roots-type charger, no need for charge cooling on low boost.

If using a centrifugal charger, can easily intercool.

Cons -Roots blowers must run low boost on stock internals because of super high intake temps. A roots blower runs at an average of maybe 60-65% efficiency, making for VERY high intake temps. However, they get by with running no intercooler because the cylinder pressures aren't terribly high. This is a result of internal compression (air is compressed before it exits the charger...independent of the cylinder head).

Roots blowers are tricky to intercool (or aftercool, more appropriately) and this can be expensive to set up.

Centrifugal chargers still should use an intercooler. While there is no exhaust heat transfer like you get from a turbocharger, there is still the friction created by the adiabatic process (centrifugal compression), resulting in higher than desireable intake temps. These high temps in conjunction with high cylinder pressures result in high probability of knock. So, intercooling is good with these.

Neither a centrifugal or roots charger are cheap.

Nitrous:

Pros -Instant power at the push of a button/click of a switch. No lag, as would be associated with a turbo or centrifugal supercharger. Quite safe when used appropriately. Little cost to fill a 10lb bottle. Isn't used all the time, so fuel economy remains the same.

Cons -Must pay to refill the bottle every time. Can only use @ WOT. Not street legal. Not legal for use on road courses or autoX events.

Then, of course there are the smaller bolt-on parts, such as intakes, exhausts, high output ignition units, etc. These are pretty much considered an upgrade to ANY of the modifications listed above.

You just have to research these things thoroughly and decide which is the one for you.

Ok, most of the stuff here is correct, but roots blowers do not compress air internally. Boost is made between the blower and combustion chamber because the blower moves more air than the engine can draw in.

There are centrifugal superchargers, turbochargers, twin screw superchargers, and roots style superchargers and you cant really say that one needs an intercooler more than the other, they all compress air in one way or another. There are just too many variables out there to say one always needs an intercooler more often, BUT that said an intercooler is always a really good idea! Technically speaking the roots blower has the worst thermal efficiency and needs the intercooler more than the others.

I think maybe you were confusing whipple (twin screw) superchargers with roots, they look similar, but the whipple actually compresses the air internally. The whipple is alittle less common, usually capable of more boost than the roots, and usually more expensive. The roots blowers and centrifugal superchargers tend to be fairly inexpensive and very common. A turbocharger is much more efficient because it uses what would normally be wasted heat energy from the exhaust to power the compressor, rather than adding rotational weight and load to the engine. Exhaust heat transfer to the compressor side of the turbo is minimal.

[KATwo40]

^^^ Thanks, Wankel. I meant Lysholm supercharger, not roots. Silly me. /whack!